EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: TrendX on February 06, 2021, 07:14:14 pm
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Dear EEVBlog Forum,
Having been a silent reader for some time now I finally have a question to you all:
OWON recently announced their new handheld multifunction test device as I would call it.
The HDS 200 Series includes a up to 70Mhz oscilloscope, a 20.000 count DMM and an 15Mhz AWG in a neat little enclosure.
For somebody like me this would be perfect for the hobby bench. As I already have good scopes at work and in my lab in the basement I don't need it to be highly accurate or have functions like serial decoding. My Siglent is doing that just fine.
I'm more thinking of buying it to have all these functions mobile, to for example check things on a car or work on arduino projects without having to leave the flat.
Do you guys think it is worth the price? And what quality should I expect from Owon? They seem to be quite a reputable brand?
At work I have a Siglent SHS for working on our EVs which is a fine scope by itself but with miserable DMM and no AWG, so no real alternative there. The old Owons and the Hantek Scopemeters are out as well.
Thanks in advance for your opinion and stay safe!
Greetings from Germany,
TrendX
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I'm also curious about these. Seems to be a competitor to Hantek's similar devices. I never had a good impression of Hantek in general, and I probably prefer Owons USB-scopes over Hantek (I own a Owon VDS2022I and is rather pleased by it) so I would be interested in review and such. I don't want to be an "early adopter" so I hope somebody else buys and reviews it... :)
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If it really will sample fast enough to support a 70 MHz bandwidth it would be useful for sure, but the sample rate is 125 MSPS, too low to even produce good results with a 40 MHz bandwidth. Still, it could be useful for many tasks.
The problem for me would be the tiny screen. My cell phone has a 5 inch display (130 mm) and that would be too small for me. The unit is already an awkward form factor being a bit too wide for the hand and no good way to hold it. They would be better off giving it a wider display and case with a hand hold on the back. A wider case would also make the unit more stable on the work bench.
Personally, I'd like to see a 500 MSPS unit with 100 MHz bandwidth, 2 channel that works through a PC or mobile device for the UI. The AWG can be useful, but often are not programmable enough and only support a limited buffer length, in this case 8 ksamples. If I were designing an AWG it would have logic to generate various types of repetitive signals based on timers and a lookup table so it could be an NCO for example. It doesn't take a lot to greatly improve on a simple memory buffer, but it requires more work in the UI to allow a user to program it.
Aren't there open source projects for low end scopes and logic analyzers? I never seem to hear of any reaching the point of being in production.
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If it really will sample fast enough to support a 70 MHz bandwidth it would be useful for sure, but the sample rate is 125 MSPS, too low to even produce good results with a 40 MHz bandwidth. Still, it could be useful for many tasks.
Are you sure you don't confuse the AWGs sampling rate of 125 MSPS with the oscilloscope part? Owon claims 250 MSPS for the scope: https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope)
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If it really will sample fast enough to support a 70 MHz bandwidth it would be useful for sure, but the sample rate is 125 MSPS, too low to even produce good results with a 40 MHz bandwidth. Still, it could be useful for many tasks.
Are you sure you don't confuse the AWGs sampling rate of 125 MSPS with the oscilloscope part? Owon claims 250 MSPS for the scope: https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope)
Looks like I mucked that up. But that doesn't change the issue of 250 MSPS being too slow to accurately represent signals at 70 MHz. The good scopes use 10x oversampling. In theory a band limited waveform can be represented at anything over 2x, but in practice that doesn't work so well. At 250 MSPS it is better than the 125 MSPS number I initially used, but it still isn't going to be as good as an analog scope with a true 70 MHz bandwidth.
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Yeah, you're right. But I'm still interested in the thing and hope reviews will pop up soon.
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Thanks @all for your replies!
I'd still be happy if it is only useable up to 30Mhz or so as I don't see any need to view such high frequencies on the go.
Most of the time I will probably use it on audio equipment, stuff like a switch mode supply or a bus such as CAN in a vehicle.
At least fo me the AWG is the most interesting feature as I can use it to feed for example an amplifier and trace the signal to the point of the defect.
I had hoped that some of you could give me an impression of what the Owon build and UI quality is like.
Futhermore it seems to me after looking at pictures and specs that the pcb inside could be the same or similar to the Hantek handhelds. Maybe someone can confirm that?
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Well, I hope it's not the same. The button layout are different so at least the PCB driving the buttons can't be the same. My impression is that Owon is better than Hantek among cheap Chinese scopes, at least in the handheld/USB variety. So even if the form factor would be ideal for me in some circumstances, I've never really considered Hanteks handheld and I'm hoping this Owon one is better. I don't want to be an early adopter, so I guess I wait for some reviews.
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If nobody else is interested and buys this piece of equipment I will buy it next month when my wage arrives. Will do a small review if you want, but I cant check how high the scope goes because my signal gen only goes to 20Mhz. I can however compare it to a Siglent SHS810 handheld scope.
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If nobody else is interested and buys this piece of equipment I will buy it next month when my wage arrives. Will do a small review if you want, but I cant check how high the scope goes because my signal gen only goes to 20Mhz. I can however compare it to a Siglent SHS810 handheld scope.
That sounds awesome! No worries about higher frequencies than 20 MHz, as we kind of can forecast it's performance based on the 250 MS sampling rate (aliasing can be intresting however).
It's the "soft parameters" I'm interested in. Like how responsive and intuitive the interface is, if it remembers settings, if continuity is fast, if the trigger works and things like this. The "feel" of the instrument is the hardest to know beforehand.
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If nobody else is interested and buys this piece of equipment I will buy it next month when my wage arrives. Will do a small review if you want, but I cant check how high the scope goes because my signal gen only goes to 20Mhz. I can however compare it to a Siglent SHS810 handheld scope.
If your sig gen has decent edges on the square wave, the display of those edges will speak volumes. For digital work the band width is what determines the edge rate you can see.
I seem to recall the formula is 0.35 = BW * rise time. So if you can see a rise time of 5 ns, that would be 70 MHz. If the rise time is more like 10 ns, that would be 35 MHz and so on. Of course you need to know your actual rise time to be sure you aren't limited by the sig gen. It would be a poor sig gen that produces edges slower than 10 ns. To get good edges, you could measure something you know is fast like a digital signal. it does depend on the circuit, but a typical digital output is lower single digit ns rise time.
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If nobody else is interested and buys this piece of equipment I will buy it next month when my wage arrives. Will do a small review if you want, but I cant check how high the scope goes because my signal gen only goes to 20Mhz. I can however compare it to a Siglent SHS810 handheld scope.
If your sig gen has decent edges on the square wave, the display of those edges will speak volumes. For digital work the band width is what determines the edge rate you can see.
I seem to recall the formula is 0.35 = BW * rise time. So if you can see a rise time of 5 ns, that would be 70 MHz. If the rise time is more like 10 ns, that would be 35 MHz and so on. Of course you need to know your actual rise time to be sure you aren't limited by the sig gen. It would be a poor sig gen that produces edges slower than 10 ns. To get good edges, you could measure something you know is fast like a digital signal. it does depend on the circuit, but a typical digital output is lower single digit ns rise time.
My SigGen Tabor 8020 has a claimed rise time of 12ns. I tested this with my SHS810 and the claimed time is almost spot on, on some frequencies a bit higher on some a bit lower.
I could try running a sig gen script on an arduino and look if it has a faster rise time if needed.
On the other hand I'd like to add that entry level scopes have specs like 100Mhz/1GSa for one channel and 100Mhz/500MS in dual channel mode which would equate to about 50Mhz relaistic bandwidth on the 250MS HDS200 in single channel mode and 25Mhz/125MS in dual channel mode?
Same goes for the integrated awg: A entry level Siglent SDG830 has 125MS for 30Mhz and the SDG1062X got 150MS for 60Mhz. So I think 125MS for 25Mhz on the HDS200 should be fine?
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As luck would have it, my HDS242S (40MHz with function gen) just arrived today. I'm no expert, but if anyone has any questions.
I bought it because I'm starting to teach basic electronics and with half my students at any given moment being remote, I wanted both a DMM and small oscilloscope that was easier to deal with than the USB scope and crappy pocket DMM I have been using. It needed to be easily readable on camera and small enough to fit on the tiny corner of my too messy desk.
So far it looks nice. A little disappointed it doesn't come with actual probes, but oh well. The Autoranging is slow as hell, but that seems to be the norm for Owon, and it's not a huge deal for my use case.
The scope seems pretty snappy, and the interface is better than I was afraid it would be. I got all the basic measuring and manipulating without needing the manual, so it's a start. It is a bit weirdly wide-feeling, but it let them shove a bigger screen in, which is the entire reason I got this over the Hantek. With all the info crammed into the display, I wanted as much screen real estate as possible.
So far, I'm generally satisfied that it'll suit my needs. I'll do my best to answer questions, though.
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As luck would have it, my HDS242S (40MHz with function gen) just arrived today. I'm no expert, but if anyone has any questions.
I bought it because I'm starting to teach basic electronics and with half my students at any given moment being remote, I wanted both a DMM and small oscilloscope that was easier to deal with than the USB scope and crappy pocket DMM I have been using. It needed to be easily readable on camera and small enough to fit on the tiny corner of my too messy desk.
So far it looks nice. A little disappointed it doesn't come with actual probes, but oh well. The Autoranging is slow as hell, but that seems to be the norm for Owon, and it's not a huge deal for my use case.
The scope seems pretty snappy, and the interface is better than I was afraid it would be. I got all the basic measuring and manipulating without needing the manual, so it's a start. It is a bit weirdly wide-feeling, but it let them shove a bigger screen in, which is the entire reason I got this over the Hantek. With all the info crammed into the display, I wanted as much screen real estate as possible.
So far, I'm generally satisfied that it'll suit my needs. I'll do my best to answer questions, though.
Could you take some pictures of it? Maybe even of the inside? So we can see the size and UI in person? How does it feel quality wise? Did you test the function gen? Is only the autoranging slow as hell or is the update rate of the value crap too?
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I'll get some pictures tomorrow, but the device itself is very snappy and responsive. The update rate on the multimeter side feels like 2-3 per second, and it generally settles within a few updates...
ONCE IT FIND THE RANGE. Seriously. It takes almost 5 seconds for it to get down to 0 ohm on resistance when you short the leads. It's positively glacial.
Plus, there's the completely incomprehensible fact that on voltage, it defaults to 2V range(20k count display), which means you have to sit through a range switch (which is over a second) if you're measuring nearly ANYTHING over 2V. Then when you lift the probe, it falls back to 2V range so you have to sit through it AGAIN.
Seriously. If you're spending $150 for a combination scope/multimeter, what are the odds you care about a 0.1mV digit that's almost certainly within the margin of error anyways?!
I'd rather not have to wait a second to even begin measuring a voltage every time I measure. No contest. I'm going to check the manual to see if I can default it to 20V as the lowest range, and if not, I'm probably going to only use it in manual range most of the time.
It's just insane, and the lag is even more apparent c because the rest of the device is so responsive.
I continue to find the interface intuitive, and I used the function generator today to run an ESC for my students with zero problems. In fact, I've noticed that you can run the function generator in the background while using the scope, which is pretty nifty. Honestly, so far the only thing bad I have to say about it is the auto range.
...But man, is it bad.
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Does it have an option to save the waveforms to a memory card and then transfer it to a computer later? And what about the PC software, is it any useful?
I have a Hantek 2D42 and those are a few things that I miss (after the lack o automatic measurements options)
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It looks like you can save a few waveforms to the device itself, but no memory card. It looks like that means you can only save like 4 unless you're connected to a computer. You do have the option to save them as images, though.
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I have a question or two. Does it remember last settings (on the scope) during power cycles? Is the autoset any good (like most people I hate the autoset, but in my experience, handheld scopes need it more than "real" scopes)?
How fast is manual ranging on the DMM part? Does it remember, say, a 20.000V if you exit and re-enter the DMM part (or during power cycles)?
That the scope seems "snappy" is a very good sign indeed!
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I think maybe I should make a new topic for these, but I recorded some terrible quality video for people so they can see some of things for themselves.
This is the first part. It's got some basic multimeter stuff and the start of the function generator stuff. Be nice! I don't have any kind of recording setup and I kind of just threw it all together impromptu. If people really want me to, I can throw together something nicer.
https://youtu.be/4GeyfHFqbxw
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Thank you! It was a very helpful video actually! Was disappointed when it ended but noticed that you named it "Pt1" so I hope for a part 2. :)
It answered most of the questions and it seems to be a decent thing actually. The DMM function is substandard, but hey, we all got our DMMs of choice at arms length anyways. It was a bummer it don't remember the manual range settings if you exit the DMM. :(
One question is about the "feel" of things. How are the buttons? How are the tilt stand? Your video actually improved my confidence in the scope, rather than scare away from it. Knowing what's bad let you appreciate what's good.
(One thing about those more "serious" handheld scopes that somewhat misses the point over more cheap/toy handhelds I think is that the really cheap ones uses the DMM input jacks for the scope functions. And I think that actually is a feature. I have an really old Uni-T UT81-something and I find it very useful to view currents at a slow timebase. It can use the scope function for the voltage, mA and A jacks. Of course that's not suitable for higher frequencies (I thingk the Uni-T thing has 40 MSPS and like 12 MHz bandwidth) and the LCD screen is really, really shitty. And no cursors, which is inexcusable. I recently "upgraded" to a Chinese el cheapo "Musttool" with 1 MHz bandwidth but the interface is unbearable bad and idiotic.)
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Actually, I just uploaded pt 2 here: https://youtu.be/P4rf4Ncqnjw
I have to re-record the teardown video because the encoder decided to turn it into a powerpoint presentation! I actually think the scope is much, much better than the multimeter. It's a *usable* multimeter, but actually a pretty pleasant (if basic) oscilloscope.
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The buttons feel pretty standard. They're run-of-the-mill rubber membrane buttons, but they aren't bad. I haven't had any issues where they missed any of my presses, and there's enough travel and feedback that they feel fine. The stand is a bit cheap feeling, but it stays closed when you want it to, and it also locks open, so no worries about it collapsing when you hit the buttons.
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Thanks again! I hope you come around and post the part about the teardown. I'm not sure I understood how a encoder can make a powerpoint presentation, but I hope you can fix it! :)
I'm dangerously close to order the scope. :)
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The frame rate! For whatever reason, the encoder suddenly was only outputting at about 1 frame every 30 seconds or so! I'll definitely record it again though.
Spoilers: It's got what looks like a clone of an stm32f303 and an Anlogic FPGA.
The DMM looks to be managed by the same IC that's in the cheap Aneng multimeters(An8008 etc)-- not that it's a bad thing. Plus, there's actual honest to goodness physical relays in there! It looks like a pretty clean layout, with only one last minute resistor slapped on as a fix. My biggest complaint is that the lcd is only held in place by the tension between the case above and a plastic frame beneath. It's not very well protected, and I'd feel better about the ruggedness of the screen if they gave you some kind of screen protector.
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It's on sale here for $179 through 3/31/2021:
https://my.banggood.com/OWON-HDS200-Series-2CH-Handheld-Oscilloscope-40-or-70MHz-Bandwidth-20000-Counts-Multiumeter-OSC-+-DMM-+-Waveform-Generator-3-in-1-Suitable-for-Automobile-Maintenance-and-Power-Detection-p-1802427.html?cur_warehouse=CN&ID=6301780
I didn't see it on Amazon yet.
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Yes. Couldn't help myself, so I've just ordered one (the 272S model) from Banggood. I've used them for years and I'm generally happy with Banggood. They have always refunded lost or broken goods and they are generally helpful, albeit sometimes in incomprehensible broken Chinglish.
Btw: Banggood always have things "on sale" and "drives" and the price is gonna jump around. Generally no worries if you miss a "sale", since it's often BS, will come back soon, makes no difference on the price, and so on. Of course, I cannot guarantee that the price won't rise.
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Hello everybody.
Could someone kindly do a teardown of the owon HDS200?
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Hello everybody.
Could someone kindly do a teardown of the owon HDS200?
...and make a firmware dump (if possible).
Thanks in advance. 8)
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Hello everybody.
Could someone kindly do a teardown of the owon HDS200?
Ordered mine almost 4 Weeks ago. Still hasn't even shipped. Contacted Banggood and they told me that it is sold out at the moment due to high request.
Hello everybody.
Could someone kindly do a teardown of the owon HDS200?
...and make a firmware dump (if possible).
Thanks in advance. 8)
If you explain how, I can dump as soon as my HDS272S arrives.
Are you able to modify such firmwares? I would really like my HDS to be able to generate a PWM signal which according to the manual is not implemented by Owon.
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If you explain how, I can dump as soon as my HDS272S arrives.
Are you able to modify such firmwares? I would really like my HDS to be able to generate a PWM signal which according to the manual is not implemented by Owon.
If you have never worked with arm controllers, recommend to practice first on a cheap development board (e.g. stm32f103c8t6), because if something goes wrong, you can get a brick. :horse:
Assuming that HDS272S got the same architecture as Hantek 2D72,
the easiest way to make dump is to use ST-Link V2:
1. Download ST-Link Utility
2. Connect ST-Link V2 to software debug ports on main circuit board (GND, SW_CLK, SW_DAT)
3. In ST-LINK Utility, specify Address: 0x08000000, with the size : 0x80000
4. Connect to Target, or press enter
5. Click save file button (File should be 512kB)
There will be an opportunity to try disassemble *.hex file.
But it is quite difficult to modify such firmwares (without source code).
Sometimes it's even easier to write custom firmware anew.
For me, like probably for many others, it is interesting to check firmware interchangeability between series Hantek 2000 and Owon HDS200.
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Owon boasts about the HDS having SCPI support to "facilitate secondary development". Could the dump be done via this?
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Owon boasts about the HDS having SCPI support to "facilitate secondary development". Could the dump be done via this?
Can't be sure without teardown.
SCPI just is software protocol. I think there is similar circuitry and components.
If so, the firmware can be read by ST-Link (if reading is not blocked, of course).
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Sooo..
Today my HDS272 arrived. 272 you ask? Yes, Banggoog managed to send me a 272 without the AWG instead of the 242S I ordered.
But nevertheless I took it apart for you guys to enjoy or not enjoy the chinese craftsmanship.
Before showing the pictures I'd like to add that at least the unit I received is autoranging pretty fast in all functions and ranges I could test.
And since I don't have my old signal generator right now I could only compare the scopes on the siglents probe adjust.
The size comparison picture shows the HDS200 between my BM235 and my SHS810.
I have to say I'm very impressed with the build quality of the case and the accesories. No flexing in the case even with a lot of force.
Probe seems and looks fine and is compensated at the connector.
Multimeter leads feel much nicer than your average cheap chinese leads but nothing compared to the brymens.
Continuity is very fast, but not as instant as the brymens.
Overall I'm very, very impressed by the device for the price. Of course it is no competition at all to a fluke but for most people it will be fine.
Please excuse the crudity of the pictures, I only have a trusty old Canon S90.
I'd be happy to answer questions or try thing you might want to know.
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Teardown pics. Best I could do.
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Teardown pics 2. Best I could do.
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Short comparison with my BM235. Again, best I could do at the moment.
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Hi TrendX, firstly, thank you very much for posting the teardown! :clap:
This will be very useful for us to decide to buy the HDS200.
Taking a rapidly looking at the pictures, it is possible to see some design problems with the owon hds200, like:
-Two THT resistors were placed and soldered apart on the PCB.
-Some SMD parts seem to be with too much solder (manually soldered ?).
-Near to the Q20 transistor, it seems to have two adaptation of smd components (capacitors ?).
-There is a stranger thing near to the resistor R202.
It is clear that these points are design errors since it is the first release (HDS200-MAIN-V1.0), but, these kinds of problems, do not happen in the first release of other more reputable brands.
However, considering the price, as you have mentioned, maybe it is a good choice, although here in Brazil, currently, US$ 1.00 = R$ 5.60 :phew:.
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Hi TrendX, firstly, thank you very much for posting the teardown! :clap:
This will be very helpful to me to decide to buy or not the HDS200.
Taking a rapidly looking at the pictures, it is possible to see some design problems with the owon hds200, like:
-Two THT resistors were placed and soldered apart on the PCB.
-Some SMD parts seem to be with too much solder (manually soldered ?).
-Near to the Q20 transistor, it seems to have two adaptation of smd components (capacitors ?).
-There is a stranger thing near to the resistor R202.
It is clear that these points are design errors since it is the first release (HDS200-MAIN-V1.0), but, these kinds of problems, do not happen in the first release of other more reputable brands.
However, considering the price, as you have mentioned, maybe it is a good choice, although here in Brazil, currently, US$ 1.00 = R$ 5.60 :phew:.
Friend I have it also HDS272S version then I will post a picture of the function generator
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Hi TrendX, firstly, thank you very much for posting the teardown! :clap:
This will be very helpful to me to decide to buy or not the HDS200.
Taking a rapidly looking at the pictures, it is possible to see some design problems with the owon hds200, like:
-Two THT resistors were placed and soldered apart on the PCB.
-Some SMD parts seem to be with too much solder (manually soldered ?).
-Near to the Q20 transistor, it seems to have two adaptation of smd components (capacitors ?).
-There is a stranger thing near to the resistor R202.
It is clear that these points are design errors since it is the first release (HDS200-MAIN-V1.0), but, these kinds of problems, do not happen in the first release of other more reputable brands.
However, considering the price, as you have mentioned, maybe it is a good choice, although here in Brazil, currently, US$ 1.00 = R$ 5.60 :phew:.
Friend I have it also HDS272S version then I will post a picture of the function generator
Hello janiorib, it would be cool!
Could you do the teardown of your hds272s? Thus, we can compare these models.
Thank you.
It would be nice to have pictures of the ADC circuitry too. By the pictures that TrendX has posted, it appears that the shielding of the ADC is soldered on the PCB, making it difficult to remove. So, we can not confirm the real sample rate of the ADC.
Other design problems that I observed:
-two THT capacitors, soldered near to the USB Type-C connector.
-a SMD resistor connected between the IC U34 and a capacitor.
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Guys, taking other looking at the PCB:
It looks like that the ADC is the IC U10, marked by the Chinese with code MXT208.
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The Shields are all soldered down. Since I may have to return my 272 to get a 272S I didn't want to desolder anything.
There seem to be some components missing on the AWG part of the pcb. Overall there are countless bodges on the board.
FPGA: EG4X20BG256
Multimeter Chipset: DM1106EN
Main Chipset: GD32F303
ADC: MXT208 (Seems to be a MXTronix MXT2088 which is also used by hantek an others)
The ADC has a specified sample rate of 100Msps so they are eighter overclocking it or lying in the datasheet.
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Guys, taking other looking at the PCB:
It looks like that the ADC is the IC U10, marked by the Chinese with code MXT208.
Greetings follows my contribution photos of the input module and other parts of the signal generator.
Extremely well done, rigid cabinet, easy to use buttons, inductive interface unfortunately not even having is a marvel. As already seen by the photos of our colleague, the pci does not have good quality of assembly as if it were a finished prototype. Plus everything works perfectly and fast in the functions more with time it should improve the construction on the assembly line and of course firmware updates, I had the hantek 2d72 and I tell you the Owon HDS 272s is superior in everything in terms of functionality, just ask for the PCB with components in the form of arrangements.
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Guys, taking other looking at the PCB:
It looks like that the ADC is the IC U10, marked by the Chinese with code MXT208.
Greetings follows my contribution photos of the input module and other parts of the signal generator.
Extremely well done, rigid cabinet, easy to use buttons, inductive interface unfortunately not even having is a marvel. As already seen by the photos of our colleague, the pci does not have good quality of assembly as if it were a finished prototype. Plus everything works perfectly and fast in the functions more with time it should improve the construction on the assembly line and of course firmware updates, I had the hantek 2d72 and I tell you the Owon HDS 272s is superior in everything in terms of functionality, just ask for the PCB with components in the form of arrangements.
Thanks for sharing!
AWG => DAC904 (14-Bit, up to 165MSPS), however, owon put it to work on 125MSPS.
As far as we could see, it seems that owon needs to make a better PCB design with more reliable assembling. Although, as said by The_Boots, TrendX and janiorib, the general functionality is good, despite the auto-ranging and the continuity test is slow.
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As I said, at least my 272 is autoranging adequately fast on all tested ranges (Ohms, DCV and DCI).
The continuity is almost instant, I'd say on par with cheap DMMs. Not as fast as the BM235 but very close.
After taking a look at the circuitry I didn't feel confident enough to connect it to the mains, but I will test it at low voltage AC as soon as I can.
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To complement the photos of the teardown:
https://photos.sigpipe.me/index.php?/category/69 (https://photos.sigpipe.me/index.php?/category/69)
As TrendX have observed, ADC (MXT2088) => Dual channel 8 bit, 100Msps (http://www.mxtronics.com/n107/n124/n181/n184/c692/attr/2630.pdf (http://www.mxtronics.com/n107/n124/n181/n184/c692/attr/2630.pdf))
chinese translated by google:
On-chip reference and sample-and-hold circuit.
Each channel has 475MHz analog bandwidth.
SNR=47dB@41MHz.
Each channel has 1Vp-p analog input range.
It looks like the Analog Devices AD9288, however, with an incomplete datasheet.
https://www.analog.com/media/en/technical-documentation/data-sheets/AD9288.pdf (https://www.analog.com/media/en/technical-documentation/data-sheets/AD9288.pdf)
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Guys, taking other looking at the PCB:
It looks like that the ADC is the IC U10, marked by the Chinese with code MXT208.
Greetings follows my contribution photos of the input module and other parts of the signal generator.
Extremely well done, rigid cabinet, easy to use buttons, inductive interface unfortunately not even having is a marvel. As already seen by the photos of our colleague, the pci does not have good quality of assembly as if it were a finished prototype. Plus everything works perfectly and fast in the functions more with time it should improve the construction on the assembly line and of course firmware updates, I had the hantek 2d72 and I tell you the Owon HDS 272s is superior in everything in terms of functionality, just ask for the PCB with components in the form of arrangements.
Taking another look:
There is more problem design on the ADC circuitry (third photo).
=> Components SMD soldered on top of other components. ???
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Taking another look:
There is more problem design on the ADC circuitry (third photo).
=> Components SMD soldered on top of other components. ???
I see they use the same banana jack that was used on one of my meters. I know this after the connector broke off at the PCB. These are not through hole parts, they are surface mounted. They are not surface mount parts either. There is no gull wing like contact with the board, just the edge of the metal lead. It's like surface mount soldering a through hole component without forming the leads.
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Taking another look:
There is more problem design on the ADC circuitry (third photo).
=> Components SMD soldered on top of other components. ???
I see they use the same banana jack that was used on one of my meters. I know this after the connector broke off at the PCB. These are not through hole parts, they are surface mounted. They are not surface mount parts either. There is no gull wing like contact with the board, just the edge of the metal lead. It's like surface mount soldering a through hole component without forming the leads.
There are a lot of other design problems with that PCB.
The hds200 PCB design is crap.
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Here's another review (google translate from Russian):
https://5t4ggswx6el6seqrgrxnjoifc4-jj2cvlaia66be-mysku-ru.translate.goog/blog/china-stores/85072.html#mcut
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Hi guys, look at this:
It seems to be the same crap design of the Owon hds242.
=> Hanmatek HO52 50M
https://pt.aliexpress.com/item/1005002339897106.html?spm=a2g0o.detail.1000014.21.4fd52c484gJfgX&gps-id=pcDetailBottomMoreOtherSeller&scm=1007.13338.183346.0&scm_id=1007.13338.183346.0&scm-url=1007.13338.183346.0&pvid=e4bcb41e-d468-4a75-86bc-fd4c26951019&_t=gps-id:pcDetailBottomMoreOtherSeller,scm-url:1007.13338.183346.0,pvid:e4bcb41e-d468-4a75-86bc-fd4c26951019,tpp_buckets:668%230%23131923%2374_668%23888%233325%2319_3338%230%23183346%230_3338%233142%239890%236_668%232846%238107%231934_668%232717%237566%23872_668%231000022185%231000066058%230_668%233422%2315392%23845
Let's wait until someone to buy it and do a teardown.
Owon and Hanmatek have been using the same design for some instruments, such as the SDS1102 and DOS1102.
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I've just discovered something I *don't* like about this instrument. After resting for a couple of weeks, the battery drained. This is really bad I think. A electronics instrument should be able to be ready after spending days, weeks or months in a drawer. I charged it full, put it away and when I started it now I got a low battery warning within a minute or so.
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Maybe I spoke too soon. After recharging the scope once again I haven't used since my last post. Just booted it up and the battery is at full charge. I don't know why the batteries depleted last time, maybe it was a fluke or maybe I was mistaken somehow. I will report further findings if something interesting comes up.
Edit: Incidentally, it's exactly one month since I charged my scope.
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Great new!
I had suspended the purchase for this unacceptable behavior...
Just to confirm this, are you able to measure the current draw when the meter is off?
In this way we will be able to estimate the battery life when the multimeter is in a storage status.
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Great new!
I had suspended the purchase for this unacceptable behavior...
Just to confirm this, are you able to measure the current draw when the meter is off?
In this way we will be able to estimate the battery life when the multimeter is in a storage status.
I knew I had to do it sooner or later. Were to lazy before, but now I've done some rough measurements. The off current at 4.00V is 2.2 mA instantly and doesn't seem to change. I measured ~40 minutes, and still 2.2 mA. That would deplete the batteries after about 2.7 months.
Interestingly, the current goes up as the voltage drops, to about 3.3 mA at 3V. So there seems to be a switched regulator going in off mode. It may be some kind of latchup, because the batteries were full yesterday when I checked after a month. And a month of 2.2 mA should have drained the batteries more than 1500 mAhs. I don't know whats going on really. The on current is about 700 mA.
I'm measuring with a lab power supply and it's possible that something in my setup is affecting the measurement. 2.2 mA is quite high for a standby current.
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MBY,
did you measure the standby current at the battery terminals or at the charger input? In the latter case you would have the input power detection circuit as additional load - most (LiIon) charging chips I know of draw more current if external power is available and go into standby only if that power is removed.
Greetings,
Rainer
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At the battery terminals, of course! :)
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Less than three months of st-by, would be unacceptable for this dmm, so I hope that your supposed latchup status may be a reality.
To clarify the matter, I would suggest you to proceed as follows:
1- leave the instrument off for at least a couple of days
2- without turning it on, acquire the battery voltage with mV accuracy (to avoid errors due to the temperature, do not touch the instrument or the batteries and take note of the room temperature)
3- leave the instrument off for about a week and repeat the previous step (with the same DMM and at the same room temperature...)
4- make the ratio between the voltage drop (in mV) and 900mV
This ratio will be an approximate indication of the number of weeks of expected st-by. If the real st-by current is in the order of 2.2mA, in a week you will acquire a voltage drop of about 80mV.
During the procedure, remember to never power on the instrument.
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Here's another review: https://youtu.be/l5UIXxj7ABI
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Hi all, what's the probe's labelling?
As I understood scope shipped with only one probe and second probe needs to be purchased separately so I want it to be the same if it's possible.
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I will take 242s and order these probes 604,10 руб. 20%СКИДКА | Цифровой осциллограф зонд X1 X10 80 МГц 150 МГц 200 МГц Φ/150B/200B тестовые щупы осциллографа 130 см в длину
https://a.aliexpress.com/_9G8zez. I can then unsubscribe how they will work in contrast to the original.
Or I'll post a video about the work of the new probes.
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I ordered these: https://www.aliexpress.com/item/32350858868.html?spm=a2g0s.9042311.0.0.27424c4dy2EOx1 (https://www.aliexpress.com/item/32350858868.html?spm=a2g0s.9042311.0.0.27424c4dy2EOx1) (2pcs P2200 option), will use it with my desktop 150 MHz scope and plan to test it with just ordered 242 model, also plan to compare with Hantek 2C42 which I have and only complain of a small display.
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This is the probe which is packaged with the device : https://www.hantek.eu/passive-probe-60mhz-hantek-p7060.html (https://www.hantek.eu/passive-probe-60mhz-hantek-p7060.html)
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A review and teardown (PCB v2) from learnelectronics:
https://www.youtube.com/watch?v=tQHTfQSSzxw (https://www.youtube.com/watch?v=tQHTfQSSzxw)
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Hi, is there a way of loading my own arbitrary waveforms or they are just limited to the default ones?
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I can't seem to find a way of measuring volts RMS and duty cycle on the HDS272S, the most basic measurements on a digital oscilloscope. Surely it must support that? Am I missing something obvious?
And do we have an Owon representative on this forum? I tried emailing them, but so far nothing.
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I didn't see any distortion figures for the function generator in the manual, so I did some measurements. The THD of the sine wave on 1KHz and 1Vrms is better than I expected at 0.029%. It does very similarly with the signal at 50Hz and 5KHz as well.
The left channel here is just a loopback on the QA401, for comparison, while the right channel is the HDS272S.
[attach=1]
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Just received my HDS242 and found some bug in firmware (I don't think it's hardware function) - bandwidth limit (20MHz) can be enabled on any channel, but has effect only on channel 2. Can anybody confirm this?
Update: firmware V1.8.0
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Just received my HDS242 and found some bug in firmware (I don't think it's hardware function) - bandwidth limit (20MHz) can be enabled on any channel, but has effect only on channel 2. Can anybody confirm this?
I tested with signals of varying frequencies and the 20MHz bandwidth limit restricted the amplitude on both channels the same way.
I am not sure if it does it correct though, since it's a feature I don't have much experience with.
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Update: firmware V1.8.0
I've got V1.6.0. Don't know if they just have different firmware for different models, or if you have a newer firmware than me. It's possible that they broke something in a newer firmware. Can't find any information about firmware for this device anywhere on the Owon site.
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I've got V1.6.0. Don't know if they just have different firmware for different models, or if you have a newer firmware than me. It's possible that they broke something in a newer firmware. Can't find any information about firmware for this device anywhere on the Owon site.
Maybe my is newer and they broke something. I searched for firmware info but unsuccessfull too.
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My 272S suddenly stopped to measure anything on the scope, and stopped output anything from the AWG. It took a while for me to rule out faulty probes, stupid settings and pebkac. I disassembled the thing and didn't discover anything suspicious. But, a factory reset did the trick and it's working again. Haven't the faintest idea of what was wrong, but this kind of bs of course impacts my confidence in the instrument.
Have anyone else seen something similar?
Edit: Nothing new to report on the battery side of things. It seems like it holds a charge now, but I will check it again later on.
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I received an HDS272S on Thursday and am quite impressed. The FW is version 2.01. I think I've tried everything It does and not run into a problem. Very different from my experience with the Hantek 2D42. Because of the size, the controls are klunky. But for a non-electronics workshop instrument it's fine. And OK for a budget/portable bench.
I bought mine as part of a portable RF and electronics test bench I'm putting together in a Pelican style case.
The 3 holes in the battery compartment PCB are labeled RX, GND and TX on the other side of the board. Ground is in the middle with RX on the banana plug side. I haven't made a connection yet. I opened it up to look over the details and saw it.
Have Fun!
Reg
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I also received a Owon HD272S over the weekend, ordered from Banggood. I wanted this one so I could take it out on site and use it for automotive stuff. It took about 2 weeks from date of order to delivery.
I only spent a little time playing with it, but so far am quite impressed.
My firmware version was 3.10. From what I could tell from youtube and previous comments above, the multimeter auto ranging was very slow. Owon seem to have improved it.
Using a 3.7v battery, with manual range set to 20V, I got a stable reading in less than half a second. (I'm guessing the time here). In auto-ranging mode, it was probably twice as long. The key thing for me, was that it seemed very usable, compared to the youtube video where it did seem excessively slow to get a stable reading in auto-ranging mode.
I've also got the Element 14 Multicomp (rebranded Owon) power supply and found that the HD272S meter reading matched up perfectly with the reading on the power supply.
The HD272S only came with one scope probe, but like a previous commenter stated, I'll probably get some additional Cleqee probes which are very affordable if I need more.
The device has lots of pros which others have already mentioned, and with a 20,000 count meter, I'll probably use this as my go-to meter for a while. However, there are a couple of cons which I thought was worth mentioning:
1. The stand on the back of meter is at a nice angle for me, but its very flimsy, and I feel it could break quite easily.
2. The bag that comes with the meter is not as protective as I'd like. I think some better padding between the cable pocket and the meter would be helpful to protect the BNC fitting from being pressed into the meter display. Currently I'm putting the meter in the bag face down to protect it, but this is not ideal.
Overall, I'm very happy with the purchase, and would recommend it.
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Things are moving quickly in the firmware, with version 1.8.0, 2.01 and 3.10 being released in the 6 weeks since I got mine.
Anyone know what's changed? Almost sounds like something big should have happened when going to version 2 and 3.
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Hi,
I'm trying to figure out if I can send the waveform generator signal output into the oscilloscope channel 1 input, so I can see the waveform being generated. I can't seem to get that to work, although nothing indicates that it should.
Has anyone else tried this and managed to get it working?
Regards,
Sijmen.
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Should work fine to see the signal from the generator. Sure you turned on the signal?
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Things are moving quickly in the firmware, with version 1.8.0, 2.01 and 3.10 being released in the 6 weeks since I got mine.
Anyone know what's changed? Almost sounds like something big should have happened when going to version 2 and 3.
Does anyone knows from where these firmware files can be donwloaded?
How is the process to update the firmware?
And, which bugs are corrected or what new functionallity added in each version?
Thanks
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How is the process to update the firmware?
Thanks
Press the System button, and Upgrade. It will ask you to reboot the scope. Upon reboot it will complain about no firmware on the USB. Reboot again to get back into the scope.
At least that's what happened when I was curious and clicked it.
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1) Turn on the AWG (big red/green button on RHS)
2) Connect a 50 ohm thru termination at the CH1 input and a 50 ohm BNC cable to the AWG
Have Fun!
Reg
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2) Connect a 50 ohm thru termination at the CH1 input and a 50 ohm BNC cable to the AWG
Thanks Reg.
With the 50 Ohm thru terminator, I assume this is the sort of thing you're talking about? https://au.banggood.com/Cleqee-P57-1PCS-50Ohm-Feed-Through-Terminator-BNC-Female-Seat-50KY-Device-Q9-adapter-Load-Resistor-p-1610070.html?cur_warehouse=CN&rmmds=search
Whats the purpose of the 50 ohm load, and why can't I just connect the AWG directly to Channel 1?
Regards,
Sijmen.
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That's the item, but a bit pricey.
I've generally used these from various vendors. Certainly should serve for the HDS272S.
https://www.ebay.com/itm/114257830287 (https://www.ebay.com/itm/114257830287)
The DSO input is 1 M ohm. The AWG output is 50 ohms as is the cable. This leads to a very large (1e6-50)/(1e6+50), almost 100% reflection coefficient at the DSO BNC if you don't have the thru termination. That in turn, leads to significant distortion of a step edge.
I designed and built a <1 ns rise time square wave generator 25 years ago. I always thought it didn't work properly. I found it recently and testing showed that adjusted properly it produced a clean <1 ns rise time square wave. The reason I thought I'd failed is 25 years ago neither I nor the EE that provided access to the Tek scopes at work recognized the termination issue.
There is no reason not to simply connect the AWG to a channel and look at the waveform. It just won't be accurate unless you have the 50 ohm thru.
The insidious aspect of mismatch is its cable length dependence. That can really leave you scratching your head.
Have Fun!
Reg
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Thanks Reg,
I have it all working now. I didn't realise the Start/Stop button was modal. Clearly, I'll need to spend more time in the user manual.
Currently not using a BNC thru terminator, but have one on order.
Regards,
Sijmen
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It had me scratching my head until I gave up and looked in the manual. Then I went, "Duhhh"
They are trying to cram a lot of functionality in very few buttons. Not an easy UI to design.
The Hantek 2D42 I'm returning didn't have a manual and the one I found on line was wrong.
Big question right now is what connector to use for the serial port on the HDS272S. I also want to bring the programming port out to a case mounted connector.
I need to find out a lot more. so far I've not been able to download anything from Owon's site.
Reg
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Does anyone knows from where these firmware files can be donwloaded?
How is the process to update the firmware?
Thanks
Hi all,
This is my first post in EEVblog.
I got my HDS242S earlier Jan 2021 in Banggood, with firmware version 1.2.0.
Unfortunately the firmware updates are not available yet to download from OWON support webpage.
I sent an email to info@owon.com.cn asking for the latest firmware update and the procedure to do it, and they replied my request.
For my surprise and dissapointment, not all HDS200 can be updated to the latest version 3.10 or even old ones like 1.8.0, 2.01.
Mine belongs to the first lot sold in Banggood (serial like 2047xxx) and can be updated to firmware version 1.7.0 only.
Attached the procedure I prepered with OWON indications and firmware v1.7.0 zip file
Hope this helps
Regards
Julius
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Well thats a great first post Julius and welcome to eevblog.
Unfortunately if there is bit of a draw back to Owon equipment support, it is that their software updates usually only work for specific batch of serial numbers, or so I have found. Discovered this when I got a cheap but faulty Owon desktop oscilloscope and was looking for a software update for it after the repair. Sure enough the downloads page showed various downloads of various versions based on serial number ranges.
Looks like this still continues.
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I sent an email to info@owon.com.cn asking for the latest firmware update and the procedure to do it, and they replied my request.
For my surprise and dissapointment, not all HDS200 can be updated to the latest version 3.10 or even old ones like 1.8.0, 2.01.
Mine belongs to the first lot sold in Banggood (serial like 2047xxx) and can be updated to firmware version 1.7.0 only.
Did it take long to get a response? I sent them a feature request 7 weeks ago, to that very same email address and I haven't heard back yet.
Did you hear anything about what was fixed in the different releases?
Really disappointing to hear about the firmware being limited by serial number ranges. Mine is 2048xxx. Wonder how far I can go. Maybe I'll try sending another email some day.
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It took a couple of days only to get response. It was inmediately considering I sent the email last Saturday Aug 7th.
They just replied.....
"....Mon., Aug 9, 2021 8:36, Lilliput (OWON) <info@owon.com.cn> wrote:
Hi Julio,
The HDS242S with your version can only upgarde to 1.7.0. ...do you like to upgrade? ...."
I said yes and next day I received a new email with the firmware file and a brief explanation how to do it. There was not a log file with the history of fixes or improvements, I got just the "Scope.upp" file
The upgrade process took me about 5 minutes (3min to read the indication, connect the scope via USB and copy the file into the scope memory, 1min since reboot to complete the upgrade, 1min to search how to change the language back to english instead default chinese)
Tray to email them again
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I inquired about mine with V 2.0.1. They said, "no bug, no need".
Reg
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On my unit (FW 3.1.0 and received a few days ago...) the pulse waveform of the signal generator for frequencies above 1MHz (included) supports 50% duty-cycle only.
Has anyone else noticed this limitation?
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I just checked mine and it cannot actually do a pulse. It's just a square wave by another name.
Reg
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In the waveform sequence, "Pulse" is in fourth place (Sine, Square, Ramp, Pulse and Arbitrary).
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At 50% duty cycle, a pulse is a square wave ;-)
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On my unit (FW 3.1.0 and received a few days ago...) the pulse waveform of the signal generator for frequencies above 1MHz (included) supports 50% duty-cycle only.
Has anyone else noticed this limitation?
Mine works the same way, on 1.6.0.
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A bit strange...
Anyway, differently to the square wave, "pulse" gives the possibility to adjust rising and falling edges therefore... even with the limits mentioned, welcome the "pulse" mode!
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I've got it today. Serial number: 2128xxx, firmware release 3.2.0.
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I've got it today. Serial number: 2128xxx, firmware release 3.2.0.
Which model do you have ?
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Model HDS272S
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I received mine before 5 days its the model HDS242S with version v3.0.0
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Another HDS272S here with Serial 2128xxx and Firmware 3.2.0. Ordered from Banggood 2 weeks ago.
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Hi,
I'm new to this forum and also the new owner of a nice Owon HDS272S ;D
I spend a couple of hours with this device and I really like it, the standard software delivered by Owon is not so nice though :(
So I was looking at this thread: https://stackoverflow.com/questions/59105167/pyusb-reading-from-a-usb-device and that seemed to work almost out of the box.
I modified the script a bit to get it better suitable for the HDS2xx device and created the attached python script, feel free to use it or expand on it.
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I just bought the 70 MHz version. It has v3.2.0 firmware. I can adjust the pulse width and rise time in the siggen.
Edit: I just played around a bit more. Although at 1 MHz and above, it does show pulse width and rise time, only the rise time is slightly adjustable. You are still just getting a square wave, instead of a pulse. At 999 KHz and below, you can set things to actually get a pulse. I tried it all the way down to 1 Hz. Another firmware update is needed.
The one feature that seems to be missing is sweep. If Owon is listening, please add sweep in the next firmware. Also, make the firmware easy to find and download.
I didn't take mine apart, since others have done so. From the pictures, the latest circuit boards look OK, with minimal bodge fixes.
I played around with the XY mode, using the curve tracer idea presented by W2AEW. Although it works, bouncing back and forth to change frequency and voltage level is a lot of trouble. As for the display, XY mode is one area where an old analog scope is still better.
I've tested and compared the scope to my much more expensive gear, and this unit seems to be quite accurate. For the money, I'm impresed with this scope/DMM/siggen.
Next, I need to try the PC software, to see what it can do. I hope it allows you to create your own arbitrary waveforms.
Edit: The included X10 probe is very cheaply made. I have better spare probes that I will use instead.
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I got a firmware update, in my second attempt at contacting Owon. It took a week, with a reply after a few days asking me some questions like serial number.
They did not say which version I got or what the changes were, even though I asked about that initially. They eventually answered that they improved the speed of the auto button.
After flashing the firmware I could see that I got version 1.7.0 as well, like julius.gl. They didn't include instructions on how to fix the language, which was now Chinese. But luckily the instructions from julius.gl was helpful in fixing that.
I can verify the speed improvements of the auto button. It went from 5 seconds to 1 second, so very good improvement!
Disappointing that such a new device is already abandoned as far as firmware updates go though (for my serial number).
The firmware file I have and the one julius.gl got have different checksums, so they are not the same. I don't know if it's because of different serial number series or because we have different models. I attached a zip to this post with a readme I created and the Scope.upp with the firmware in case anyone is interested.
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Mine works as does @mojoe's. Thanks for figuring that out. So it's at least somewhat usable. Not heard from my bug report to Lilliput/Owon.
I've got lots of fancy kit (and a Tek 7904 in transit). I'm quite impressed by the cost-value proposition these present.
Reg
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If it really will sample fast enough to support a 70 MHz bandwidth it would be useful for sure, but the sample rate is 125 MSPS, too low to even produce good results with a 40 MHz bandwidth. Still, it could be useful for many tasks.
At 125MPS you need about 30 samples to get a decent waveform (not just sine.)
So that's a 4MHz complex signal you can read ok.
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The sample rate is 250 MSa/s in single channel mode and 125 MSa/s in dual channel mode as is reported on the screen. This can be confirmed by looking at the rise time of a square wave when you turn on the 2nd channel.
In single channel mode, Nyquist is 125 MHz and the step response is excellent. In 2 channel mode, the Nyquist is only 62.5 MHz. So there is the potential for aliasing to be aware of.
My sole major criticism is the plastic BNCs. Really guys! This is intended for an auto repair shop and you've used plastic connectors? Sheeesh...
Reg
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The plastic is a cover for the metal shell of the BNC. I understand why Owon did this. It's a safety feature. The included (crappy) x10 probe also has a plastic outer covering on the BNC. Same reason why the USB C connector is recessed.
If you look at how Fluke does this on their Scopemeters, they use proprietary connectors that are recessed. They require an adapter to use a BNC probe. The adapter is also covered in plastic.
On another topic, I downloaded the SCPI manual for the scope. Sorry to say, it is limited to just what you can do via the buttons. No extra functionality. However, you could implement an AWG sweep function via SCPI. I'll probably fool with this later, when I have time.
I really hope that Owon adds sweep to the firmware.
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Here's some rebadged versions:
- multicomp MP720780, MP720782, MP720781, MP720783 (farnell, element14)
- Hanmatek HO52 (aliexpress, banggood, etc.)
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Here's some rebadged versions:
- multicomp MP720780, MP720782, MP720781, MP720783 (farnell, element14)
- Hanmatek HO52 (aliexpress, banggood, etc.)
Does anyone have infos on how the Hanmatek HO52 compare to the "original" Owon untis?
Because I'm not sure if this is really a rebranded owon version?
the Owon are much more rectangular shaped, the Hanmatek is slightly curved. So did they really changed the housing.
Most rebranded units out are only changing colors of case (see multimeters etc) :-)
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Got mine today From Aliexpress...
2129xxx serial number
FW 3.2.0
Version 2.0 Main board
Kinda weird because in scan mode the signal scans from right to left :-BROKE
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Kinda weird because in scan mode the signal scans from right to left :-BROKE
Not if you think about it.
Scan/Roll mode just works like this to fill the display with data however when you Stop the scope the data is still relative to its correct trigger position.
Some scopes have both Auto and dedicated Roll modes where in dedicated Roll nothing is displayed until the display buffer is filled.
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Thanks for the nice forum! Lots of nice reading in here!
I just got mine from aliex... and I have received a HDS272S, FW V3.3.0, PCB: HDS200-MAIN-V2.1
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Another review:
Owon HDS242S Oscilloscope AWG Multimeter 3in1 Review & Teardown | Voltlog 380
https://youtu.be/91BmxmHspik
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Interesting review.
Among other things, it also allowed me to identify and remove the protective film of the screen (which was practically invisible, without any imperfection that would reveal its presence ...)
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A comparison of the Hantek 2D72 and OWON HD272S. Looks like the Owon is the winner:
https://www.youtube.com/watch?v=DTC1h2PWC8g (https://www.youtube.com/watch?v=DTC1h2PWC8g)
Also a review and teardown:
https://youtu.be/AFxSrieoI64 (https://youtu.be/AFxSrieoI64)
https://youtu.be/lbvqnWPC6iQ (https://youtu.be/lbvqnWPC6iQ)
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Kerry just put up a new video comparing the two when using a slow timebase:
- Slow Timebase Performance Comparison: Hantek 2D72 Vs. OWON HD272S
https://www.youtube.com/watch?v=8uGYJQBwtig (https://www.youtube.com/watch?v=8uGYJQBwtig)
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Have you tried different settings?
Input coupling AC and record length ?
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Slow signal trigger problem is problem trigger mode coupling.
HDS272S
V3.3.0 sn: 21310xx
https://youtube.com/shorts/yrrt7kktDaU?feature=share (https://youtube.com/shorts/yrrt7kktDaU?feature=share)
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Slow signal trigger problem is problem trigger mode coupling.
HDS272S
V3.3.0 sn: 21310xx
https://youtube.com/shorts/yrrt7kktDaU?feature=share (https://youtube.com/shorts/yrrt7kktDaU?feature=share)
Looks like it's ok, there is no trigger in roll mode.
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Hi, I have some doubts about this oscilloscope.
- It can measure RMS AC+DC?
- The oscilloscope do FFT?
- The oscilloscope trigger is based on HW or SW? Can detect a quick pulse?
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Hi, I have some doubts about this oscilloscope.
- It can measure RMS AC+DC?
- The oscilloscope do FFT?
- The oscilloscope trigger is based on HW or SW? Can detect a quick pulse?
It does not measure RMS. You can measure vpp and calculate yourself though.
It does not have FFT.
I don't know how the trigger works.
It's a very basic scope, but what it does, it does well for the price and form factor. I like it as a portable addition to my bench scope.
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Hi, I have some doubts about this oscilloscope.
- It can measure RMS AC+DC?
- The oscilloscope do FFT?
- The oscilloscope trigger is based on HW or SW? Can detect a quick pulse?
1. In scope mode it can measure mean, not RMS
2. No internal FFT of course (maybe will be added in PC software which now in unreliable)
3. The trigger looks like is HW and in old versions it can show frequency in measure mode very accurate even if waveform period is out of sampling window or window contain too much periods, in newer version (mine is V4.1.0) it has "Counter" option which shows frequency of triggering channel in top right corner. It's just 4-digit, but it's accurate.
And it has Peak Detect acquire mode.
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in newer version (mine is V4.1.0) it has "Counter" option which shows frequency of triggering channel in top right corner. It's just 4-digit, but it's accurate.
Do you have a screenshot of the new counter, for those of us who will never get that firmware?
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Do you have a screenshot of the new counter, for those of us who will never get that firmware?
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in newer version (mine is V4.1.0) it has "Counter" option which shows frequency of triggering channel in top right corner. It's just 4-digit, but it's accurate.
Do you have a screenshot of the new counter, for those of us who will never get that firmware?
What is the S/N with V4.1.0 firmware? Later than 2131xxx ?
The PCB is HDS200-MAIN-V2.1 ?
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What is the S/N with V4.1.0 firmware? Later than 2131xxx ?
SN is 2130xxx
The PCB is HDS200-MAIN-V2.1 ?
Yes
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Thanks for the answers, but I was thinking about one thing and asked another...
Does the DMM perform RMS AC+DC measurements or just AC?
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Does the DMM perform RMS AC+DC measurements or just AC?
AC only. In DC mode the AC components are averaged.
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How do we get the latest firmware, to get the new features and bug fixes? Owon has firmware downloads for some products, but not this one.
Alternately, is there any way to dump the firmware from one scope, to upgrade another?
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How do we get the latest firmware, to get the new features and bug fixes? Owon has firmware downloads for some products, but not this one.
Send an email and ask for it. You can find their email address here: https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope)
A firmware version is only compatible with a serial number range, so you need to supply that.
My scope was bought before summer, shipped with version 1.6.0 and the newest supported firmware is 1.7.0, even though they now ship version 4.x.
It's a bit crappy of them I think.
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I found a bug in my hds242 (ver. 4.1.0) - measurments on ch.2 not working, simply showing in state OFF, have anybody noticed same thing?
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I figured out how to make it to work, thank you.
Great scope for it price, but I hope there is potential way to upgrade it to 72MHz version and add circuits to enable afg.
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I figured out how to make it to work, thank you.
Great scope for it price, but I hope there is potential way to upgrade it to 72MHz version and add circuits to enable afg.
Looks like 40 and 70 MHz is the same (analog bw looks higher than 40 MHz on HDS242), just different probes bundled. But not sure.
And separate AFG is more handy for me and they generally more cabable. Also parcels to Ukraine for more than 100 EUR are imposed by custom taxes so basic model is more interesting in per dollar performance.
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How do we get the latest firmware, to get the new features and bug fixes? Owon has firmware downloads for some products, but not this one.
Send an email and ask for it. You can find their email address here: https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope)
A firmware version is only compatible with a serial number range, so you need to supply that.
My scope was bought before summer, shipped with version 1.6.0 and the newest supported firmware is 1.7.0, even though they now ship version 4.x.
It's a bit crappy of them I think.
Have anyone of you had any success contacting them about firmware upgrade?
I wrote them an e-mail 8 days ago and also wrote through their web page after 3-4 days of my e-mail, still no response at all...
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Have anyone of you had any success contacting them about firmware upgrade?
I wrote them an e-mail 8 days ago and also wrote through their web page after 3-4 days of my e-mail, still no response at all...
Several have, including me. It's a bit of a hit and miss.
I got a firmware update, in my second attempt at contacting Owon. It took a week, with a reply after a few days asking me some questions like serial number.
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Received my HDS272S yesterday. Firmware version is: V4.2.0
Im really impressed with it for a handheld device.
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Have anyone of you had any success contacting them about firmware upgrade?
I wrote them an e-mail 8 days ago and also wrote through their web page after 3-4 days of my e-mail, still no response at all...
Several have, including me. It's a bit of a hit and miss.
I got a firmware update, in my second attempt at contacting Owon. It took a week, with a reply after a few days asking me some questions like serial number.
I have sent them all the information needed at once.
However, yesterday they have replied me...
They told me my unit is the latest one, no need to be upgraded...
...then I have told I read about 4.1.0 which they replied that is because of the lack of some parts like LCD screen and they needed to replace some parts and that is why they needed a new firmware release...
I don't know how far it is true and its relation of BS but sounds interesting...
Also I really hope if they had to use other components, then they did it in a way what preserves hardware compatibility - it can be done if the firmware is not junk.
I doubt the only change is for a different LCD or other component(s)...
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Seems like a great meter.
Anyone tried to hack it from 40mhz to 70?
Anyway to add more waveform storage? or math functions?
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New hardware version of HDS272, HDS200 PCB MAIN V3.0 (2021-09-27) and firmware v5.1.1.
[attach=1]
[attach=2]
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New hardware version of HDS272, HDS200 PCB MAIN V3.0 (2021-09-27) and firmware v5.1.1.
I wonder why there are so many PCB versions, I just checked mine and it's V2.20 (2021-09-09) Which is only a couple of weeks difference!
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They told me my unit is the latest one, no need to be upgraded...
...then I have told I read about 4.1.0 which they replied that is because of the lack of some parts like LCD screen and they needed to replace some parts and that is why they needed a new firmware release...
I don't know how far it is true and its relation of BS but sounds interesting...
Also I really hope if they had to use other components, then they did it in a way what preserves hardware compatibility - it can be done if the firmware is not junk.
I doubt the only change is for a different LCD or other component(s)...
I tried to swap LCDs between pcb 1.0 (fw 1.8.0) and 2.1 (fw 4.1.0) scopes, resulted in shifted images in both, one right-down, another left-up, so it's displays was different and not 100% compatible, pcbs are different too, so maybe reason is not only LCD's difference.
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Anyone tried to hack it from 40mhz to 70?
No need to BW hack, my HDS242 has resulting rise time not more than 5ns (include generator on SN74HC14 with 5-outs-in-parallel has about 2-3ns) which is 70MHz+ BW, just use proper probes.
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Do all the software versions have the annoying "Quirk" where if you use "Auto" it will sometimes end up on CH2 even though CH2 is off? I'm getting fed up of going back in the CH menu to select CH1 again when I want to adjust the timebase etc.
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Any one seen and good BF/CM deals on the HDS242S?
Best I can find is ~ $129 with coupons for the HDS242s (was about $125 on 11.11)
TIA
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Hi, so I just got my Multicomp MP720781 from Farnell, which seems to be just a rebranded HDS242S with green rubber instead of blue.
If anyone is interested, my unit came with V2.0 (2021-03-24) main PCB and V3.0.0 firmware (they don't seem to sell trough a lot of these)
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TheHWCave just released a review of the HDS272S:
#104 A closer look at the OWON HDS272S Scope meter -- TheHWCave
https://youtu.be/6v2UhBz3xZU
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Hi, tunk.
thx your reply.
The video mentions high refresh rates and not being able to see the modulated waveform clearly:
https://youtu.be/DTC1h2PWC8g?t=1418
HDS272S already supported Low Refresh(My machine version is V5.3.0). Let's see how to set:
https://youtu.be/z4BaAnN0eFg
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Hi Trendx,
HDS272S already supported Low Refresh(My machine version is V5.3.0). Let's see how to set:
https://youtu.be/z4BaAnN0eFg
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HDS272S already supported Low Refresh(My machine version is V5.3.0). Let's see how to set:
https://youtu.be/z4BaAnN0eFg
I use mainly slow refresh mode because without intensity grading fast refresh in most cases is useless IMO.
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I can't agree more, Intensity grading is improtant when in fast refresh mode. but this model is difficult to implement due to resource limited.
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OWON have a new model HDS2102S on 100MHz
https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope)
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100MHz Version looks nice.
Teardown would be interesting to see if it really has 500Msps and how they did it.
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100MHz Version looks nice.
Teardown would be interesting to see if it really has 500Msps and how they did it.
ADC is HAD1511.
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ADC is HAD1511.
Interesting. Isn't that the same as the Siglent SDS1000X-E models? Sounds like a good (and expensive) upgrade.
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Some more info here:
https://www-mydigit-cn.translate.goog/thread-289642-1-1.html?_x_tr_sl=zh-CN&_x_tr_tl=en&_x_tr_hl=en&_x_tr_pto=sc
They have also shown up at Banggood at 200 and 220us$.
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https://www.banggood.com/OWON-HDS200-Series-2CH-Handheld-Oscilloscope-100MHz-Bandwidth-20000-Counts-Multiumeter-OSC-+-DMM-+-Waveform-Generator-3-in-1-Suitable-for-Automobile-Maintenance-and-Power-Detection-p-1916147.html (https://www.banggood.com/OWON-HDS200-Series-2CH-Handheld-Oscilloscope-100MHz-Bandwidth-20000-Counts-Multiumeter-OSC-+-DMM-+-Waveform-Generator-3-in-1-Suitable-for-Automobile-Maintenance-and-Power-Detection-p-1916147.html)
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Hello folks,
i have also been a proud owner of an OWON HDS272S since yesterday. The delivery time at Banggood was only 42 hours from CZ to DE. Super fast as I think.
After a first test, I noticed the following:
In the AWG (e.g. sine), among other things, the high or low level can also be set.
This also works for the place before the comma or the place after the comma.
But as soon as you increment or decrement the second digit after the decimal point (1/100), the software behaves very strangely.
So strange that I didn't even try to describe it.
Can anyone comprehend that?
Software version: 3.2.0
Ser. Nr.: 2128xxx
Mainboard date: 2021-03-24
Mainboard Version: V2.0
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"So strange that I didn't even try to describe it."
Can you make a video to describe that?
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Unfortunately I have no way of creating a video.
It's a bit difficult, but I'll try to describe it anyway.
We are in the AWG Settings menu.
First of all - with the frequency setting or the amplitude / offset setting, everything works correctly.
After switching to high level / low level, you can increment or decrement the digit in front of the decimal point without any problems. Likewise the place after the comma.
But if you want to set the smallest decimal place (1/100), the crazy behavior starts.
- Sometimes you can only decrement (but with the increment key).
- Sometimes an increment causes the number to increment by two digits.
- Sometimes the number is changed at high level and at the same time at low level and other behavior that is difficult to describe.
This behavior is already insane.
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Same HW and firmware release.
Same wrong behavior on my HDS272s.
Hopefully we will get a firmware upgrade ......
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saresigi,
Thanks a lot.
"""
- Sometimes you can only decrement (but with the increment key).
- Sometimes an increment causes the number to increment by two digits.
- Sometimes the number is changed at high level and at the same time at low level and other behavior that is difficult to describe.
"""
These descriptions are very detailed, I had Feedbacked to engineering team.
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Does the USB port on these support outputting power?
i.e. can an active (current or differential) probe that requires 5V be powered directly from this scope?
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Does the USB port on these support outputting power?
i.e. can an active (current or differential) probe that requires 5V be powered directly from this scope?
No, it does not.
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I first found out about this beauty about three days ago, and was in love. I literally mentioned it for about a minute, in passing, to a friend of mine and expressed an interest in it… Half an hour later, I get a message saying “Happy New Year I’ve bought you a present!“ - He is a very very considerate and generous friend, because I really couldn’t afford this right now, if at all.
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Someone ran "Oscillofun" on it :)
https://www.youtube.com/watch?v=sFnJAyCiQkE (https://www.youtube.com/watch?v=sFnJAyCiQkE)
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:-+ loll
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It is fake. Parameters on screen is statics.
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It is fake. Parameters on screen is statics.
:-// :-\
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It is fake. Parameters on screen is statics.
The stuff that's on screen all looks like it should be static, since they aren't changing modes or settings. Kerry Wong's video (linked below) showed really good XY mode performance (at a faster 2.5Msps, 100us/div setting), and also did not show any of the scales changing, so that's at least consistent. Do you have any specific evidence besides the scales not changing? If you have an HDS200 and can make a video of the actual performance, I'd love to see how it differs.
https://www.youtube.com/watch?v=AFxSrieoI64&t=12m44s (https://www.youtube.com/watch?v=AFxSrieoI64&t=12m44s)
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It is fake. Parameters on screen is statics.
It's not fake, I checked with my HDS242 and confirmed it's real though not as sharp as that clip, at least I know it's real.
Another example, with arbitrary wave generator like UTG962E 2ch, you can rotate both X+Y axes simultaneously by frequency modulation
https://www.youtube.com/watch?v=B7lCYTOAsH0 (https://www.youtube.com/watch?v=B7lCYTOAsH0)
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Are you seriosly?
You hawe good generator. Try modulating a dynamic dualcube. I think it is impossible.
My Owon HD 272s in the way to me. But i not have other generator.
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Siruhu64's (allegedly fake) video description says they used a Sony Xperia Z3 as the signal source. That's a cell phone from 2014. I would assume that anybody who can read and write on this forum has access to that quality of "signal generator" (sound card audio jack). Should be easy to replicate. I have an HDS in order, and will post my result if nobody beats me to it.
Another thing lending credibility to their video is the XT version they also posted: https://youtu.be/r0WuSK9jK58
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New hardware version of HDS272, HDS200 PCB MAIN V3.0 (2021-09-27) and firmware v5.1.1.
Received HDS272S yesterday (from Banggood), this has firmware v5.4.0 but same PCB version it seems.
Serial is in 2149xxx range.
However, looks like they've added a bodge, extra electrolytic capacitor on upper right corner...(see attached photo).
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However, looks like they've added a bodge, extra electrolytic capacitor on upper right corner...(see attached photo).
Looks like they changed the buzzer too. Yours has an open top, but idolclub's msg3825149 (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3825149/#msg3825149) shows a side-port module.
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Saving waveform to a CSV file seems buggy (at least on v5.4.0).
Attached are results for saving "image" and "wave" for two test signals (60MHz Sine and 20MHz Square).
For sine wave the .csv file contains lot of 0 samples in the beginning.
And for the square wave, frequency is wrong in the header (23.7MHz vs actual 20MHz...)
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Hello to all.
I've checked this thread from start to end.
I bought 2 units (HDS272s) from (bgd) CZ depo -
Both have v3.2.0 firmware version and SN are starting with 2128xxx .
Testing the units I found or confirmed several firmware bugs.
I might be wrong so maybe some of you will do same tests and confirm or not - "it's not a bug is a a feature" style.
------------------
a) "Channel 2 is Off" on screen without any reason when using HOR menu or the Trigger menu.
How to test: just press HOR or Trigger menu. The message will pop up.
(@TheBay noted this bug (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3828998/#msg3828998) and I can confirm it).
b) User interface not responding in Waveform Generator menu.
How to test:
Use Mode to switch to Waveform Generator - set some frequency using arrow keys.
Use Mode to switch to Oscilloscope - use any of Channel / HOR / Trigger menus.
Use Mode to switch back to Waveform Generator try to use arrow keys to change Frequency (Frequency will show in green color that means is selected).
c) Waveform Generator doesn't change selected signal type:
How to test:
Connect oscilloscope probe to Waveform Generator output.
Use Mode to switch to Waveform Generator. Set Waveform to "Arbitrary".
Use Mode to switch to oscilloscope and check waveform.
Use Auto + Trigger to get a stable waveform on display.
Use Mode to switch back to Waveform Generator and set Waveform to "Sine".
Use Mode to switch back to oscilloscope and check waveform.
d) Osciloscope measured frequency is flawed / wrong when Acqu Mode is set to "Peak detect"
How to test:
(Use Mode to switch to activate oscilloscope).
In HOR menu check that Acqu Mode is set to "Sample".
In Measure menu activate Frequency for the channel that you are using.
Connect oscilloscope probe to calibration port.
Check the measured frequncy on display ( it should be 1KHz).
Use HOR menu and set Acqu Mode is set to "Peak detect".
Check the measured frequency on display (on my units 2.2 Khz instead of 1KHz).
e) In Waveform generator, when High and Low Level is selected instead of Amplitude and Offset, incrementing or decrementing last digit (second after the comma) changes both values of High and Low instead of selected parameter.
In some cases Down arrow or Up arrow will not respond to keypress and not change the values of selected parameter.
(@saresigi spoted this bug (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3890252/#msg3890252)- and I can confirm it)
I have videos that presents the aboved mentioned bugs and a return/repair notice was sent to bgd on December 28.
------------------
For those that are interested about HDS2102S: 2 non-public videos are posted on a japanese blog. Just search based on probe model included with these HDS devices.
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Testing the units I found or confirmed several firmware bugs.
I might be wrong so maybe some of you will do same tests and confirm or not - "it's not a bug is a a feature" style.
------------------
a) "Channel 2 is Off" on screen without any reason when using HOR menu or the Trigger menu.
How to test: just press HOR or Trigger menu. The message will pop up.
(@TheBay noted this bug (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3828998/#msg3828998) and I can confirm it).
b) User interface not responding in Waveform Generator menu.
How to test:
Use Mode to switch to Waveform Generator - set some frequency using arrow keys.
Use Mode to switch to Oscilloscope - use any of Channel / HOR / Trigger menus.
Use Mode to switch back to Waveform Generator try to use arrow keys to change Frequency (Frequency will show in green color that means is selected).
I did quick test on unit with v5.4.0 firmware.
a) This only happens if CH2 is disabled and in "CH1/2" menu have CH2 active. If switch to CH1 in this menu (press "CH1/2" button couple times), then don't get this message anymore....
b) I was unable to reproduce this.
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Testing the units I found or confirmed several firmware bugs.
I might be wrong so maybe some of you will do same tests and confirm or not - "it's not a bug is a a feature" style.
------------------
a) "Channel 2 is Off" on screen without any reason when using HOR menu or the Trigger menu.
How to test: just press HOR or Trigger menu. The message will pop up.
(@TheBay noted this bug (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3828998/#msg3828998) and I can confirm it).
b) User interface not responding in Waveform Generator menu.
How to test:
Use Mode to switch to Waveform Generator - set some frequency using arrow keys.
Use Mode to switch to Oscilloscope - use any of Channel / HOR / Trigger menus.
Use Mode to switch back to Waveform Generator try to use arrow keys to change Frequency (Frequency will show in green color that means is selected).
I did quick test on unit with v5.4.0 firmware.
a) This only happens if CH2 is disabled and in "CH1/2" menu have CH2 active. If switch to CH1 in this menu (press "CH1/2" button couple times), then don't get this message anymore....
If you use the "Auto" mode it will randomly select CH2 even though it is disabled.
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Just received my 272S (a mere five days from China to Blighty! 😮😀) - I had a cursory play around with it, not sure what I'm doing yet. I've managed to save screenshots (. BMP format) and waveforms (.CSV format), and have twiddled and wiggled, but need more time.
In the interim, I've taken some screenshots for you, in case you'd like to see. It's truly a very nice device.
PS: Mine is on 5.4.0 firmware too.
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In my opinion these devices are "toys": fun to have but a waste of time and money. I checked most of the "reviewers" opinion (videos) and after I've got these units I think those reviews are biased.
I know that I don't have too many posts on this forum, so... here is a short video with 2 devices: link (https://drive.google.com/file/d/1CtB2tK_Ub2qNA_Zc1MyNxsVaDuP8S-IM/view?usp=sharing).
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In my opinion these devices are "toys": fun to have but a waste of time and money.
Would your opinion on that change if the code was bug-free?
... I think those reviews are biased.
Kerry Wong said that Banggood sent the unit to him for review (reading between the lines: for free), so there is definitely some incentive for him to promote it. I don't recall about the others, but you're right to be skeptical.
I know that I don't have too many posts on this forum, so... here is a short video with 2 devices
I saw your earlier post (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3923708/#msg3923708) about those issues, and your video is pretty clear cut. Definitely something going wrong. Thanks for posting it. Hopefully BetterAndBetter will be able to relay these issues to the Owon team and get them fixed ASAP. Given that there is now software v5.4.0, you might reach out to Owon support for an updated version. Maybe one of your issues has already been fixed? I have one on order, but hasn't arrived yet, or I'd report my own findings.
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I find the scope very good, thus far. I'm no scope expert but it's VASTLY better than "JYETech" scopes which TRULY are toys. I own both the DS0112A, and the DSO150 (aka "DSO Shell"). I'm not sure on what planet the DSO150 can be classed as a scope, with its toy-esque bandwidth being a paltry 200Khz! 🤦♂️😂
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Eti,
You have the newer software version, right? Can you do the sampling mode frequency test to see if that issue is fixed?
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Measurements (frequency and period) seem to be still wrong in "Peak Detect" mode with v5.4.0 firmware.
Reporting 2kHz vs actual 1kHz, while (hardware?) counter is reporting the frequency correctly...
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In my opinion these devices are "toys": fun to have but a waste of time and money.
Would your opinion on that change if the code was bug-free?
I like the ideea behind these units: go on field, do your work with less equipment and in less time.
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I have written to this company many times to ask if an update is available.
They never gave me an answer! This lack of respect for customers is absolutely inconceivable!
Undoubtedly interesting products but ... totally absent customer support, therefore ... never again OWON!!
My unit is SN. 2124xxx, Ver. V3.1.0
Do any of you kindly have a firmware upgrade compatible with it?
Thanks so much
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A very thorough review, here, in Russian. I've attached English subtitles in zipped SRT format, in case you need them. Russians know their stuff!!
https://www.youtube.com/watch?v=zvg7zVGSAn0 (https://www.youtube.com/watch?v=zvg7zVGSAn0)
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Tempered glass camera (LCD) screen protectors seem good idea with these scopes as plastic is really soft.
Problem is that its rather hard to find correct size, since usually these are advertised only by camera model, without actual protector dimensions mentioned...
However, I happened to accidentally notice that Sony ZV-1 screen protectors are ok fit (https://www.amazon.com/gp/product/B07W3VRHJ7/ (https://www.amazon.com/gp/product/B07W3VRHJ7/))
These are about 3.4" diagonally, while 3.7" would seem ideal, but haven't yet come across that size screen protectors....
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New hardware version of HDS272, HDS200 PCB MAIN V3.0 (2021-09-27) and firmware v5.1.1.
Received HDS272S yesterday (from Banggood), this has firmware v5.4.0 but same PCB version it seems.
Serial is in 2149xxx range.
However, looks like they've added a bodge, extra electrolytic capacitor on upper right corner...(see attached photo).
I bought a volt meter with banana plug jacks that look just like those. You ask why was I opening my volt meter? Because one of the banana plug jacks had opened up right where it is soldered to the PCB. I don't know if the metal is stub soldered to the PCB or if that one plug was defective, but it did not appear to be much holding it in place. Any sort of mechanical stress on solder will result in it breaking before too long which is what happened. Are these the same or do they poke through the PCB with solder on the back side?
Looking at the black one it doesn't seem to have much solder and I still don't see an opening in the board.
I was thinking of getting the 2102S model, but that seems hard to find. Any reason for that that we know of?
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I was thinking of getting the 2102S model, but that seems hard to find. Any reason for that that we know of?
It's a brand new addition to the product line, and they don't have the volume shipped yet. I'd bet on either production issues, or some outstanding software issues. Last I heard was that it would start shipping on Jan 19, but it was originally scheduled for release in late Dec, and then early Jan, and then Jan 12, and now Jan 19, so who knows.
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Unfortunately I have no way of creating a video.
It's a bit difficult, but I'll try to describe it anyway.
We are in the AWG Settings menu.
First of all - with the frequency setting or the amplitude / offset setting, everything works correctly.
After switching to high level / low level, you can increment or decrement the digit in front of the decimal point without any problems. Likewise the place after the comma.
But if you want to set the smallest decimal place (1/100), the crazy behavior starts.
- Sometimes you can only decrement (but with the increment key).
- Sometimes an increment causes the number to increment by two digits.
- Sometimes the number is changed at high level and at the same time at low level and other behavior that is difficult to describe.
This behavior is already insane.
Hi saresigi，
The bugs had fixed， please send email to info@owon.com.cn for update.
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Unfortunately I have no way of creating a video.
It's a bit difficult, but I'll try to describe it anyway.
We are in the AWG Settings menu.
First of all - with the frequency setting or the amplitude / offset setting, everything works correctly.
After switching to high level / low level, you can increment or decrement the digit in front of the decimal point without any problems. Likewise the place after the comma.
But if you want to set the smallest decimal place (1/100), the crazy behavior starts.
- Sometimes you can only decrement (but with the increment key).
- Sometimes an increment causes the number to increment by two digits.
- Sometimes the number is changed at high level and at the same time at low level and other behavior that is difficult to describe.
This behavior is already insane.
Hi saresigi，
The bugs had fixed， please send email to info@owon.com.cn for update.
Hello.
Are you an Owon employee?
-
HDS272S already supported Low Refresh(My machine version is V5.3.0). Let's see how to set:
https://youtu.be/z4BaAnN0eFg
Hi BetterAndBetter,
The video you posted helped me. Thanks for info.
If you have acces at the new firmware version (and some spare time): can you do me a favor and check following:
-------------
In HOR menu check that Acqu Mode is set to "Sample".
In Measure menu activate Frequency for the channel that you are using.
Connect oscilloscope probe to calibration port.
Use Auto button to sync the displayed wave form.
Check the measured frequncy on display (it should be 1KHz).
Use HOR menu and set Acqu Mode to "Peak detect".
Check the measured frequency on display (it should be 1KHz).
-------------
Thanks.
-
New hardware version of HDS272, HDS200 PCB MAIN V3.0 (2021-09-27) and firmware v5.1.1.
Received HDS272S yesterday (from Banggood), this has firmware v5.4.0 but same PCB version it seems.
Serial is in 2149xxx range.
However, looks like they've added a bodge, extra electrolytic capacitor on upper right corner...(see attached photo).
Nice smoothing off of the edges of the board. Lovely. 🤣🤨
-
Hi saresigi，
The bugs had fixed， please send email to info@owon.com.cn for update.
Hi,
Have you fixed the "CH2 is Off" bug?
Also can you please post the updated firmware on here or put links to it on here as we don't always get a reply when we contact your company.
-
Tempered glass camera (LCD) screen protectors seem good idea with these scopes as plastic is really soft.
On my devices I'm using tablet film protectors cut to size of display.
I prefer film protectors with anti-glare - the display is easier to read.
Check for film protectors for older 10" tablet models, are alot cheaper.
You can get protection for 2 or 3 devices using 1 protector .
-
New bugs added to previous list (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3923708/#msg3923708) :D
------------------
f) When osciloscope settings are save then recalled, active (voltage or time) markers values are corectly saved but are shown in wrong position on display (images attached "bug-f-1.jpg" and "bug-f-2.jpg" )
How to test:
(Use Mode to switch / activate oscilloscope mode).
Press Measure button.
Select Cursor option.
Select Type.
Select CH1 voltage (or Time).
Select A cursor and set a value.
Select B cursor and set a value.
(Note displayed markers - lines - position)
Press Save button.
Select Configure option.
Use Save option.
Use Recall option.
Press Measure button.
Check markers values and displayed position of lines.
g) When device is restarted (power off / power on):
- Voltage markers - same like previous bugs;
- Time markers - strange values (check attached image "bug-g.jpg").
How to test:
Press Measure button.
Select Cursor option.
Select Type.
Select Time.
Select A cursor and set a value.
Select B cursor and set a value.
Press Power button and shut down device.
Press Power button and start the device.
Press Measure button.
Check markers values and units and displayed position of lines.
------------------
Edited:
:) Ask "engineering team" if in firmware is set the low voltage for the Li-Ion batteries at 3.6V or so.
(My device bateries are marked: 18650s22 jby-21620).
How to test:
Use the device until "Low battery" message is displayed and the battery sign on display shows empty battery / or device shuts down.
Remove battery cover.
Use a DMM and check batteries voltages: it should be around 2.8V (?).
-
Nice Lissajous I got going: https://imgur.com/a/ILg1hOH
-
:D
Voltage bug confirmed and I add a new one to the list (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3935830/#msg3935830). So...
------------------
h) In firmware is set the low voltage for the Li-Ion batteries at 3.6V - 3.7V or so. Voltage of 3.6V or 3.7V is the nominal value for Li-Ion batteries. The discharged value should set between 2.9V - 3V.
Due to this the device may be used only at around half (+/-) of batteries total capacity. (check attached images.)
(In video I'm using 2x2800mah batteries that should give around 8 hours of usage.)
How to test:
Use the device until "Low battery" message is displayed and the battery sign on display shows empty battery / or device shuts down.
Remove battery cover.
Use a DMM and check batteries voltages: it should be around 2.9V-3V (?).
i) In Trigger menu: The line that represents Trigger level is shown if Coupling option is set to "DC" but is NOT shown if Coupling option is set to "AC".
How to test:
Press Trig button.
Set Coupling to "DC".
User arrows to set a level.
(Note that trigger level is shown on display like a popup message and a line).
Set Coupling to "AC".
User arrows to set a level.
(Note that trigger level is shown on display the line that represents the level is not shown).
------------------
A video presenting bug f), g), h) and i) is available on this LINK (https://drive.google.com/file/d/1mQoX19wVnNZCAMHKRMG2qFnK8DdSIXiH/view?usp=sharing) (updated)
Edit:
Video link fixed.
... and a note: the DMM used in video is produced by Owon and sold by Farnell - ;D
-
:D
Voltage bug confirmed and I add a new one to the list (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3935830/#msg3935830). So...
------------------
h) In firmware is set the low voltage for the Li-Ion batteries at 3.6V - 3.7V or so. Voltage of 3.6V or 3.7V is the nominal value for Li-Ion batteries. The discharged value should set between 2.9V - 3V.
Due to this the device may be used only at around half (+/-) of batteries total capacity. (check attached images.)
(In video I'm using 2x2800mah batteries that should give around 8 hours of usage.)
How to test:
Use the device until "Low battery" message is displayed and the battery sign on display shows empty battery / or device shuts down.
Remove battery cover.
Use a DMM and check batteries voltages: it should be around 2.9V-3V (?).
i) In Trigger menu: The line that represents Trigger level is shown if Coupling option is set to "DC" but is NOT shown if Coupling option is set to "AC".
How to test:
Press Trig button.
Set Coupling to "DC".
User arrows to set a level.
(Note that trigger level is shown on display like a popup message and a line).
Set Coupling to "AC".
User arrows to set a level.
(Note that trigger level is shown on display the line that represents the level is not shown).
------------------
A video presenting bug f), g), h) and i) is available on this LINK (https://drive.google.com/file/d/1mQoX19wVnNZCAMHKRMG2qFnK8DdSIXiH/view?usp=sharing) (updated)
Edit:
Video link fixed.
... and a note: the DMM used in video is produced by Owon and sold by Farnell - ;D
You need to state the firmware version within which you’re seeing these issues. Thanks. .
-
You need to state the firmware version within which you’re seeing these issues. Thanks. .
....
I bought 2 units (HDS272s) from (bgd) CZ depo -
Both have v3.2.0 firmware version and SN are starting with 2128xxx .
....
I have videos that presents the aboved mentioned bugs and a return/repair notice was sent to bgd on December 28.
...
Feel free to post your test results -> are detailed in my posts how to do it... and firmware version. Some might be fixed allready ... or not ... ;)
Thanks.
PS: I dont'encourage any one to do or to ask for firmware updates until all bugs are fixed.
I'm actively using the units - day by day. That's why I'm hitting all those bugs.
I don't care any reviewer got a unit for free or not: he/she/it should be using it daily and give you /us an honest opinion.
I don't care who is who.
The units that I bougt are for daily work use. And should work flawless. I don't have time to play.
On the other hand : Posting on public forum I find it usefull - it will help me on long term to not have more headaches.
Any device I use is in parameters and I trust it.
I don't trust these "toys" until everything is fixed.
PS: Sorry if I was harsh...
... and if they don't fix ALL the bugs I found, I'll continuously push bgd to return the money.
I'll stop here. but IF I got a flawless firmware - you'll get one too. Read / test / submit your own info and test results.
Be active !!!
-
Hello, has anyone ever received a firmware update at all?
I think it's pretty stupid that the CUSTOMER has to test the software (free of charge) or find the errors.
But I think it's even worse that OWON doesn't seem to give any feedback or updates.
OWON could, for example, say "all errors are traceable - repairs are in progress" (possibly also "sorry").
I had from "BetterAndBetter" (is that an OWON employee?)
got a message that my reported bugs were fixed and also reported me immediately to "info@owon.com.cn" but didn't get any feedback until now. Ok - it's only been 35 hours since then, maybe the employees at OWON all have Corona. Maybe I should wait a few more weeks/months ;)
Incidentally, I was able to reproduce all reported bugs on my device.
@tly - I don't think this is bgd's problem but rather OWON the manufacturer's.
My OWON HDS272S: SW-Version: 3.2.0 - Ser. Nr.: 2128xxx - Mainboard date: 2021-03-24 - Mainboard Version: V2.0
-
@tly - I don't think this is bgd's problem but rather OWON the manufacturer's.
It is: they sold those to me and . Everything I posted here was sent to seller too. My warranty is insured by the seller not manufacturer.
Check the "HDS200 series user manual.pdf" - it should be available on Owon site.
What doesn't Owon understands is that they don't hit in their own brand - but they hit in their own distribution channels too.
A product it's not only the item itself.
-
Sorry, but what I meant is that bgd is responsible for the guarantee but does not repair any software.
-
Bgd allready contacted me: I hope we will find a solution that will satisfy both parts - we both lost.
The only part that is gaining is Owon due to my feedback: they can't afford a real software/device tester.
I hope that - at some point in time in near future - they will fix all the bugs and you'll benefit too.
Good luck
-
tly - you're doing a great job documenting clear failures in the software. I hope they address these ASAP, since even without a dedicated tester, I would have expected the software developers to run into these issues during development.
On a tangental note, it looks like Banggood figured out that they should put all the HDS200 series on a single page, but in doing so, they also decided to play some marketing games with pricing. Do you want 20% off of US$250.99, or just 9% off US$219.99? Looks the same to me!
-
Query:
I have an HDS272S, shipped from BangGood China, and my shipped firmware is 5.4.0 - is this the lastest firmware for the devices with which 5.4.0 is compatible?
Muchos appreciadios 😛
-
I was thinking of getting the 2102S model, but that seems hard to find. Any reason for that that we know of?
It's a brand new addition to the product line, and they don't have the volume shipped yet. I'd bet on either production issues, or some outstanding software issues. Last I heard was that it would start shipping on Jan 19, but it was originally scheduled for release in late Dec, and then early Jan, and then Jan 12, and now Jan 19, so who knows.
All of my meters have either broken on their own or been killed by leaking Costco alkalines. So I need something now and ordered this.
https://www.ebay.com/itm/165282520383 (https://www.ebay.com/itm/165282520383)
I'm hoping the display won't be too small for me to see easily. I like the compact form factor so it will nest in my computer bag. Once I add the scope I should be good to go. I sure would prefer an attached scope rather than handheld, but I've never found one that was worth having.
-
So I need something now and ordered this.
Probably a good call. Just saw the new shipping estimate for the HDS2102(S) is either January 20, or January 25, depending on which of the two pages on Banggood you look at.
-
A new video from TheHWCave -- see the description for a good synopsis...
#106: Getting Data from the OWON HDS272S Scope meter
https://www.youtube.com/watch?v=z5EKfZrriaY (https://www.youtube.com/watch?v=z5EKfZrriaY)
-
Time domain reflectometry on a 10M HDMI cable, using the built in function generator. Works well.
-
Time domain reflectometry on a 10M HDMI cable, using the built in function generator. Works well.
What function settings did you use?
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Time domain reflectometry on a 10M HDMI cable, using the built in function generator. Works well.
What function settings did you use?
Try these (attached). Ch2 (blue trace) is local (sig gen, incident) end, ch1 (yellow trace) is distant end. I was doing TDR whilst simultaneously measuring one-direction delay of the signal; around 32nS in a 10M HDMI cable.
-
I received the device.
Model HDS 272s
fw. 5.4.0
hw. 3.0
Not on the menu settings - Buzer on/off
[attachimg=1]
-
I received the device.
Model HDS 272s
fw. 5.4.0
hw. 3.0
Not on the menu settings - Buzer on/off
(Attachment Link)
You'll need to explain more, please:
# Buzzer as-in continuity buzzer, or do you mean the beeps when keypresses occur? I've tried this blank menu these ways:
1~ Turn scope off then on to ensure we start afresh.
2~ Depress rubber "System" button
3~ Depress F4 (currently marked "1/2" before depressed)
4~ Now, with label above F4 marked "2/2", depress F3 (blank label above it)
5~ Press the "back" button (under F4) a few times to back out of the menu
6~ Play around in different modes, to see if the keypress beeping has muted (of particular note, the range button [F4] in DMM mode is NOT muted after having pressed the blank labelled F4, in step 4 (above)
I have also tested pressing the blank labelled F4 after pressing "System" button, then F2 (labelled "System" at that point), and paging 1of2 and 2of2, and pressing the blank labelled F4 on both pages - NOTHING changes.
-
Bgd allready contacted me: I hope we will find a solution that will satisfy both parts - we both lost.
The only part that is gaining is Owon due to my feedback: they can't afford a real software/device tester.
I hope that - at some point in time in near future - they will fix all the bugs and you'll benefit too.
Good luck
Utter nonsense. They can afford to design and develop a somewhat complex piece of equipment, and market it, so they CAN afford one.
-
I received the device.
Model HDS 272s
fw. 5.4.0
hw. 3.0
Not on the menu settings - Buzer on/off
(Attachment Link)
Try switching Mode to the frequency generator, then press System/System (on pg 1/2), Buzzer is on that page, or at least on my version 5.5.0.
-
I received the device.
Model HDS 272s
fw. 5.4.0
hw. 3.0
Not on the menu settings - Buzer on/off
(Attachment Link)
Try switching Mode to the frequency generator, then press System/System (on pg 1/2), Buzzer is on that page, or at least on my version 5.5.0.
Thank you.
Do you have the 5.5.0 firmware? If so, would you mind attaching it? Thanks
My serial begins “2149” hardware/board V3.0 (see attached photo) so it’s very new, and the same as yours, which I gather you must've upgraded based upon the 5.4.0 firmware yours was supplied with.
PS: Unlike the units I saw taken apart in YouTube reviews, mine seems to be lacking the copper screening tape on the input can.
-
Hds2102s (update 22/1/22 - one of these videos has suddenly be made private. No problem, I had the foresight to download all of the videos, so can mirror if needed)
https://webcache.googleusercontent.com/search?q=cache:l5a2amyylZkJ:https://blog.goo.ne.jp/electronics_diy_5/1+&cd=4&hl=en&ct=clnk&gl=uk&client=ms-android-google (https://webcache.googleusercontent.com/search?q=cache:l5a2amyylZkJ:https://blog.goo.ne.jp/electronics_diy_5/1+&cd=4&hl=en&ct=clnk&gl=uk&client=ms-android-google)
https://www.youtube.com/watch?v=1wHXCpvCNOY& (https://www.youtube.com/watch?v=1wHXCpvCNOY&)
https://www.youtube.com/watch?v=ssyrK2RCGzw (https://www.youtube.com/watch?v=ssyrK2RCGzw)
https://www.youtube.com/watch?v=Q1OnW6tetV0 (https://www.youtube.com/watch?v=Q1OnW6tetV0)
.SRT subtitles attached
-
In menu generator, have this switch.
-
I received the device.
Model HDS 272s
fw. 5.4.0
hw. 3.0
Not on the menu settings - Buzer on/off
(Attachment Link)
Try switching Mode to the frequency generator, then press System/System (on pg 1/2), Buzzer is on that page, or at least on my version 5.5.0.
Thank you.
Do you have the 5.5.0 firmware? If so, would you mind attaching it? Thanks
My serial begins “2149” hardware/board V3.0 (see attached photo) so it’s very new, and the same as yours, which I gather you must've upgraded based upon the 5.4.0 firmware yours was supplied with.
PS: Unlike the units I saw taken apart in YouTube reviews, mine seems to be lacking the copper screening tape on the input can.
Me too need new firmware. S/N 2152
-
I requested new firmware in OWON.
Can you give Me software for PC?
I don't has CD in box.
-
I requested new firmware in OWON.
Can you give Me software for PC?
I don't has CD in box.
Download from OWON, v1.2.4.20220114:
http://files.owon.com.cn/software/pc/HDS200_series_pc_software.zip (http://files.owon.com.cn/software/pc/HDS200_series_pc_software.zip)
-
Do you have the 5.5.0 firmware? If so, would you mind attaching it? Thanks
My serial begins “2149” hardware/board V3.0 (see attached photo) so it’s very new, and the same as yours, which I gather you must've upgraded based upon the 5.4.0 firmware yours was supplied with.
PS: Unlike the units I saw taken apart in YouTube reviews, mine seems to be lacking the copper screening tape on the input can.
Sorry, I typed that reply from my phone (big thumbs, poor eyesight), my FW is 5.4.0. :palm:
-
Do you have the 5.5.0 firmware? If so, would you mind attaching it? Thanks
My serial begins “2149” hardware/board V3.0 (see attached photo) so it’s very new, and the same as yours, which I gather you must've upgraded based upon the 5.4.0 firmware yours was supplied with.
PS: Unlike the units I saw taken apart in YouTube reviews, mine seems to be lacking the copper screening tape on the input can.
Sorry, I typed that reply from my phone (big thumbs, poor eyesight), my FW is 5.4.0. :palm:
Don't you worry, phones have a habit of messing up our intended writings. 😁
-
Testing the units I found or confirmed several firmware bugs.
I might be wrong so maybe some of you will do same tests and confirm or not - "it's not a bug is a a feature" style.
------------------
a) "Channel 2 is Off" on screen without any reason when using HOR menu or the Trigger menu.
How to test: just press HOR or Trigger menu. The message will pop up.
(@TheBay noted this bug (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3828998/#msg3828998) and I can confirm it).
I think this is a feature with an undesired side effect. I've found that the cause of the "Channel 2 is Off" message stems from the use of the AUTO button. There's also a slightly less annoying work-around than re-entering the CH1/2 menu and switching back to Chan-1.
It turns out that the AUTO button has different behavior depending on what's plugged into the scope's inputs and the channel that's selected in the trigger menu.
(Example-1)
1) Set CHAN-1 to ON and CHAN-2 to OFF and set trigger to CHAN-1. Apply a signal to CHAN-1 only.
2) Press the AUTO button -one time-.
3) The scope will properly display the signal on CHAN-1 but the AUTO button has also toggled the 'selected' channel to CHAN-2 but didn't turn it on. (Verify this by pressing the CH1/2 button and note the highlighted channel).
4) If the AUTO button is pressed again, it will toggle back to CHAN-1. That would be the work-around in most cases, just press the AUTO button a second time.
(Example-2)
1) Set CHAN-1 to ON and CHAN-2 to OFF, and set TRIGGER to CHAN-1. apply a signal to CHAN-2only.
2) Press the AUTO button -one time-.
3) CHAN-1 will turn OFF and CHAN-2 will turn ON and the TRIGGER will be switched to CHAN-2
4) Addition presses of the AUTO button will again toggle the 'selected' channel back and forth. CHAN-1 will remain OFF
(Example-3)
1) Apply signals to BOTH channels, it doesn't matter whether either channel is ON or OFF.
2) Press the AUTO button -one time-.
3) BOTH channels will turn ON and the scope will trigger on whatever channel the TRIGGER is set to, the AUTO button will no longer toggle between channels.
You may have noticed that certain functions get highlighted on the display after their button is pushed. CH1/2 button will highlight the V/Div in the lower left corner of the display, the HOR and TRIG buttons will highlight their respective functions. With a previous unit I had (and returned) running firmware V4.1.0, the AUTO button would only toggle channel selection when the V/Div indicators were highlighted, if either the HOR or TRIG info on the screen was highlighted the AUTO would not toggle. Seems that in V5.4.0, AUTO will toggle regardless of which function is highlighted.
There may be other behavioral issues with the AUTO button that I haven't run across yet.
-
I wonder if anyone will write open source firmware for these, just as has happened on the JYETech scopes? 🤔
There’s always scope for improvement… … BAH! couldn’t resist! 😁
-
I wonder if anyone will write open source firmware for these, just as has happened on the JYETech scopes? 🤔
Perhaps for this reason, the firmwares is not laid out for free access.
-
I wonder if anyone will write open source firmware for these, just as has happened on the JYETech scopes? 🤔
Perhaps for this reason, the firmwares is not laid out for free access.
What do they care? They’ve sold the hardware and basically wash their hands of it from there.
-
Utter nonsense.
... and sheeps where pink.
|O
Edit:
I watched today an youtube post of one of the reviewers of this unit - no name/or hint - complaining ... and a long video... he couldnt solve some basic stuff.
5 x 47 nf ceramic capacitors would solved his probs. We passed that prob 35 years ago.
Edit::
I wonder if I'm on the right forum. Pictures and images with alot of hardcore stuff: DMMs, DSOs.... How about knowledge ?
-
Utter nonsense.
... and sheeps where pink.
|O
Edit:
I watched today an youtube post of one of the reviewers of this unit - no name/or hint - complaining ... and a long video... he couldnt solve some basic stuff.
5 x 47 nf ceramic capacitors would solved his probs. We passed that prob 35 years ago.
Edit::
I wonder if I'm on the right forum. Pictures and images with alot of hardcore stuff: DMMs, DSOs.... How about knowledge ?
Pink sheep? (btw, that's red, not pink) :o :-//
******
You know, not everyone has the same knowledge level or life experience. Where one lacks knowledge in a certain area, another will have an abundance of knowledge in that area. Pride and looking down on people for not having the same knowledge as us, the same beliefs as us, the same perspective as us, is a human thing, but a VERY ugly one. I have been guilty of this myself.
Just remember, each of us only knows what we have been taught, or have learnt. Each of us only possesses what we are given. The same applies to ALL of us, no exceptions.
-
....
I have been guilty of this myself.
....
+ 1 (me). At least I'm not alone
-
Looks like the Multicomp Pro MP720783 is a green-skinned version of the HDS272S: https://au.element14.com/multicomp-pro/mp720781/hand-held-oscilloscopes-lcd-40mhz/dp/3703264
Interestingly, the spec sheet says a 6k memory depth, not the 4k/8k like the HDS200.
-
Owon are an exceptionally bizarre company. They’ve got firmware downloads available on their site, for other scopes, and they specify serial number ranges for said models, with which certain firmwares are compatible… and yet with the HDS200 range, we have to email them and cross our fingers that they’ll reply; why?!?!?!
I asked them for the latest firmware a few days ago (attaching a VERY CLEAR PHOTO of the screen with my serial number, firmware version etc), and just now I received a reply ***asking for my serial number!!*** - I was asked a few other things too. This feels like the Spanish Inquisition for goodness sake.
Wake up Owon, people want the firmware and you’re not dealing with idiots here. We paid for these machines and expect you to service us. These aren’t toys they’re tools. I don’t buy all the horse crap about “we can’t afford a software tester” - NOT ONLY are you shifting boat loads of the Owon models, you’re also shifting SKU through Farnell by the way of the rebranded units.
Get your act together. I am a firm believer of leaving crazy China behind and moving manufacturing back to the West. The Chinese are clueless as to how we work, and what we expect. All they care about is selling X thousand containers worth of stock.
-
I asked them for the latest firmware a few days ago (attaching a VERY CLEAR PHOTO of the screen with my serial number, firmware version etc)
I still have not received a response to my firmware request.
-
I asked them for the latest firmware a few days ago (attaching a VERY CLEAR PHOTO of the screen with my serial number, firmware version etc)
I still have not received a response to my firmware request.
If your model and serial range are the same as mine, and if they send the firmware, I’ll share it with the forum 😃
-
Owon are an exceptionally bizarre company. They’ve got firmware downloads available on their site, for other scopes, and they specify serial number ranges for said models, with which certain firmwares are compatible… and yet with the HDS200 range, we have to email them and cross our fingers that they’ll reply; why?!?!?!
VERY true words. I too have been waiting for an answer from OWON for two weeks, although "BetterAndBetter" said the problem was solved.
This is my E-Mail to "info@owon.com.cn" from the 12.01.2022
========================================================================
Hi, this is the Forum-Info from "BetterAndBetter (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3934457/?PHPSESSID=fj7v8ro1cihat18b9l629puo20#msg3934457)":
i have received the information that my reported bugs have been eliminated.
would you please send me an update of the firmware.
But please also send me a version of 3.2.0 (it's my version) so that I can go back if necessary.
Has also the wrong frequency measurement been corrected in "Peak Detect" mode? Forum Info 1 (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3923708/#msg3923708) - Forum Info 2 (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3929594/?PHPSESSID=fj7v8ro1cihat18b9l629puo20#msg3929594)
My Data:
Software version: 3.2.0
Ser. Nr.: 2128114
Mainboard date: 2021-03-24
Mainboard Version: V2.0
Now that you have my data - will i automatically receive future firmware improvements?
Regards
========================================================================
-
Query:
I have an HDS272S, shipped from BangGood China, and my shipped firmware is 5.4.0 - is this the lastest firmware for the devices with which 5.4.0 is compatible?
Muchos appreciadios 😛
Our firmware and hardware realization is identified
-
Suggestion: How about if everyone here in the forum entered their device data in the signature like I did.
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Owon HDS242(40 Mhz without AWG).
Firmware version : V.4.4.1
I have bugs with Auto that are mentioned in the Reply #224, slow continuity, resistance and capacitance.
I can not save waveforms. After I click save on the scope and connect it to PC in the software there is no option to read from device or new storage device so I could read that file.
How did you guys retrieve images from scope?
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You must set "USB" to "MSC"
System --> F4
look Picture
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connect it to PC in the software there is no option to read from device or new storage device so I could read that file.
Try this: remove batteries from scope then connect it to PC.
Scope tries to charge batteries each time is connected using USB cable. USB 2.0 is rated at 0.5A and USB3.0 is rated 0.9-1 A.
With 1.5A drawn, the scope is over this limits.
Without batteries, it will power through USB and it will need around 0.47-0.49A.
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Thank you tly and saresigi!
Scope did not react to MSC/HID mode switching. I had to reboot it.
Bug : When cable is connected to PC it will not display new images. Fix : Reconnect cable to receive new image.
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Hi,
I'm new to this forum and also the new owner of a nice Owon HDS272S ;D
I spend a couple of hours with this device and I really like it, the standard software delivered by Owon is not so nice though :(
So I was looking at this thread: https://stackoverflow.com/questions/59105167/pyusb-reading-from-a-usb-device and that seemed to work almost out of the box.
I modified the script a bit to get it better suitable for the HDS2xx device and created the attached python script, feel free to use it or expand on it.
Oh my, wow, this is SUPERB work! Thanks ever so much, GOD bless you.
PS: Please find attached my modified version, with more specific device name prompts/CSV filenames
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Today received a response from support.
"Can you find any bug? if not bug, we don't supply update firmware."
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Today received a response from support.
"Can you find any bug? if not bug, we don't supply update firmware."
Look hard and slow and carefully then 😂
That’s an appalling attitude towards a customer. If you want the firmware then they need to get on and send you it. What a stupid company.
Send them this if all else fails ——> 🐜
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Firmware 5.4.0 have this bugs.
1. Switching in resistance measurement mode is very slow.
2. In menu oscilloscope not have switch On/Off Buzer
3.Osciloscope measured frequency is flawed / wrong when Acqu Mode is set to "Peak detect"
How to test:
(Use Mode to switch to activate oscilloscope).
In HOR menu check that Acqu Mode is set to "Sample".
In Measure menu activate Frequency for the channel that you are using.
Connect oscilloscope probe to calibration port.
Check the measured frequncy on display ( it should be 1KHz).
Use HOR menu and set Acqu Mode is set to "Peak detect".
Check the measured frequency on display (on my units 2.2 Khz instead of 1KHz).
4.In Trigger menu: The line that represents Trigger level is shown if Coupling option is set to "DC" but is NOT shown if Coupling option is set to "AC".
How to test:
Press Trig button.
Set Coupling to "DC".
User arrows to set a level.
(Note that trigger level is shown on display like a popup message and a line).
Set Coupling to "AC".
User arrows to set a level.
(Note that trigger level is shown on display the line that represents the level is not shown)
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I've sent an email to Owon on Jan 18th. I've got an reply in less then 1 hour asking about SN, what country I'm from (?), where I bought the device and if are any issues with devices firmware and if I have pictures / videos to show that.
I've sent all details regarding purchase and other stuff + all my bug list + videos.
Still waiting for an reply.
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Note: Bgd allready gaved me the OK to return the devices and to get money back because the manufacturer didn't replied to their messages too. Strange. But I've asked for an firmware update on Dec 28th.
Before returning I'll do an detailed video with explanation and push to Youtube.
I used the devices intensively. For automative suff will above medium level. For electronics are "almost" to an beginner level. The most common problem for me was the 10mv/div level. It needs one more: a 2mv/Div or at least 5mv/div.
And another thing: trigger - sometimes works / sometimes don't. Didn't got it why. I did the experiment in different days in exactly same conditions (notes about settings and other stuff).
PS:
Don't trust any of the reviewes posted on Youtube about this device.
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... and because I'm stupid and crazy: I ordered 2 of this MP shit at Farnell ... let's see who is loosing more money.
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3.Osciloscope measured frequency is flawed / wrong when Acqu Mode is set to "Peak detect"
How to test:
(Use Mode to switch to activate oscilloscope).
In HOR menu check that Acqu Mode is set to "Sample".
In Measure menu activate Frequency for the channel that you are using.
Connect oscilloscope probe to calibration port.
Check the measured frequncy on display ( it should be 1KHz).
Use HOR menu and set Acqu Mode is set to "Peak detect".
Check the measured frequency on display (on my units 2.2 Khz instead of 1KHz).
4.In Trigger menu: The line that represents Trigger level is shown if Coupling option is set to "DC" but is NOT shown if Coupling option is set to "AC".
How to test:
Press Trig button.
Set Coupling to "DC".
User arrows to set a level.
(Note that trigger level is shown on display like a popup message and a line).
Set Coupling to "AC".
User arrows to set a level.
(Note that trigger level is shown on display the line that represents the level is not shown)
I doubt that Owon will pay much attention to the last two "defects". Dave did a very informative video on AC trigger mode and it's use.
His video #685 addresses the missing trigger level indicator. The whole video is good but the specific info is at 16:57 to 18:01 on the timeline.
https://www.youtube.com/watch?v=y5aAjd9YPok (https://www.youtube.com/watch?v=y5aAjd9YPok)
The peak detect acquisition mode is really meant to capture glitches/events that might otherwise be missed in the standard sample acquisition mode, and that appears to be working as it should. In this mode there IS additional information being captured and the freq display is telling us what it sees.
On the FW version 4.1.0 (and 5.4.0, my only points of reference) Owon also included a "counter" on page-2 of the HORZ menu. That counter displays the correct frequency when the measure freq display doesn't. I have no idea where it gets it's information.
One easy way of displaying the additional information captured in peak detect mode is to zoom in on the paused waveform.
How to test:
Oscilloscope probe on CHAN-1, CHAN-2 OFF.
Set CHAN-1 coupling to AC (just to keep everything centered on the screen)
Set HORZ to 200us, refresh rate to LOW, PEAK DETECT acquisition.
Set TRIGGER to DC, Falling Edge.
Attach probe to scope compensation signal to display a signal
-- (At this point the frequency display should be displaying something other than 1KHz)--
Pause the display using the RUN/STOP button
Set HORZ timebase to 1.0us to zoom in on wave form
Note the extra pulse on the waveform being counted on the frequency display.
If you dont see an extra pulse, un-pause the display, switch HORZ to SAMPLE acquisition mode and then back to Peak Detect (verify that freq display is displaying something other than 1KHz), then do the above pause and zoom. On occasion, the extra pulse is on the rising edge so you may have to scroll the horizontal over to see it.
IMO the erroneous frequency display is not really a bug, it interprets/displays what has been captured. Perhaps it's one of the things that comes with the lower price point of the scope (ie memory depth, sample rate, etc). If a situation requires the peak detect mode be used in order to catch the glitches, the cursors (time) will let the user zero in on what ever period of interest is needed.
Maybe the "counter" in the HORZ menu that they placed on the later versions of the firmware was meant to address situations like this. :-//
I'd be curious to know how the Hantek 2D72 responds to the same setup.
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I've checked the video you mentioned. Now I know for sure that the power source I'm using (that has a huge ripple) is in fact a constant frequency signal generator with large variable offset. :P
In other words: he pointed that if your chan is DC coupled and trigger si AC coupled is no point to show the line. True.
Did he mentioned anything about AC coupling for both (chan and trigger) ?
And about displayed frequency:
Connect the probe to signal generator
Set to Peak detect.
Set Signal generator to Square and 1 -> 10 KHz
Check displayed frequency on scope.
Set Signal generator to Square and 70 -> 80 KHz
Check displayed frequency on scope.
(Optional: use Auto button, change frequency on signal generator and check the result on scope).
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Peak detect in use. Also, notice the arrow that shows trigger level on right.
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And about displayed frequency:
Connect the probe to signal generator
Set to Peak detect.
Set Signal generator to Square and 1 -> 10 KHz
Check displayed frequency on scope.
Set Signal generator to Square and 70 -> 80 KHz
Check displayed frequency on scope.
(Optional: use Auto button, change frequency on signal generator and check the result on scope).
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Peak detect in use. Also, notice the arrow that shows trigger level on right.
Sorry my friend, I can't help you. I understand you have certain expectations and that the HDS272 is failing to meet them.
To me, this is not a defect, the peak detect mode is working as it should and the added captured data happens to be tripping up the freq display. The easy answer to getting a stable reading on the freq display is to simply use sample/normal mode. This device meets Owon's published specification and I find it to be quite a handy and unique tool at this price point.
I can tell you that FW Version 5.4.0 the freq display is still behaving in a manner that you would call defective. There may be a newer version available that might address your concerns.
One thing I noticed from other people's attempt to get new firmware, and the responses from Owon, it would not be a surprise to discover that there MAY be limited backward-compatibility between firmware versions. After all, they've had at least three different versions of the PCB in less than a year's time, multiple FW changes, a known display screen change, the addition of post-production parasite components and a less that willing to attitude to dispense firmware updates (or even communicate).
One could only imagine the cost of technician/programmer/language translator time needed to support years of previous designs across their global product offerings, not to mention component obsolescence. It's much cheaper to ignore the requests unless there's a real problem that could impact current sales. That's how they can sell these units for less (sometimes much less) than $200.
If potential FW compatibility or lack of customer support is an issue, and you have a window of opportunity to return them, you might consider doing so before that window closes. Best of luck! :-+
Regards
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Hint:
https://www.youtube.com/watch?v=RgItGsjfPpE (https://www.youtube.com/watch?v=RgItGsjfPpE)
Good luck ;)
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Hint:
https://www.youtube.com/watch?v=RgItGsjfPpE (https://www.youtube.com/watch?v=RgItGsjfPpE)
Good luck ;)
I can't afford to spend 1.5 hours, thanks for posting it anyway; what's the summary of the video please?
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For those with HW version 3.0, here is firmware version 5.6.2 for HDS272S (it might work with other devices but I would not take the risk and I assume no liability for any bricked device). Best is still to ask Owon directly to make sure you have the correct version.
The file includes FPGA + OS upgrade.
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For those with HW version 3.0, here is firmware version 5.6.2 for HDS272S (it might work with other devices but I would not take the risk and I assume no liability for any bricked device). Best is still to ask Owon directly to make sure you have the correct version.
The file includes FPGA + OS upgrade.
Upgrade ok. Thank's for firmware.
Firmware 5.6.2 have this bugs.
1. Switching in resistance measurement mode is very slow.
2. In menu oscilloscope not have switch On/Off Buzer
3.FIXED Osciloscope measured frequency is flawed / wrong when Acqu Mode is set to "Peak detect"
How to test:
(Use Mode to switch to activate oscilloscope).
In HOR menu check that Acqu Mode is set to "Sample".
In Measure menu activate Frequency for the channel that you are using.
Connect oscilloscope probe to calibration port.
Check the measured frequncy on display ( it should be 1KHz).
Use HOR menu and set Acqu Mode is set to "Peak detect".
Check the measured frequency on display (on my units 2.2 Khz instead of 1KHz).
4.In Trigger menu: The line that represents Trigger level is shown if Coupling option is set to "DC" but is NOT shown if Coupling option is set to "AC".
How to test:
Press Trig button.
Set Coupling to "DC".
User arrows to set a level.
(Note that trigger level is shown on display like a popup message and a line).
Set Coupling to "AC".
User arrows to set a level.
(Note that trigger level is shown on display the line that represents the level is not shown)
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For those with HW version 3.0, here is firmware version 5.6.2 for HDS272S (it might work with other devices but I would not take the risk and I assume no liability for any bricked device). Best is still to ask Owon directly to make sure you have the correct version.
The file includes FPGA + OS upgrade.
Wow! Thank you ever so much! :-+ :D
Attached, proof of the upgraded HDS272S (h/w v3.0)
@rn777 - I have no idea what you mean re triggering - the trigger line is visible, and adjustable, in both AC & DC coupling modes. Obviously it disappears once it is set.
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Just for the laughs, I think I shall email Owon the version 5.6.2 firmware, and ask "Here, would you like this upgrade?" since they didn't bother themselves to reply back with it attached, after THREE emails. ;D
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@rn777 - I have no idea what you mean re triggering - the trigger line is visible, and adjustable, in both AC & DC coupling modes. Obviously it disappears once it is set.
How to test:
Press Trig button.
Set Coupling to "DC".
User arrows to set a level.
(Note that trigger level is shown on display like a popup message and a line).
Set Coupling to "AC".
User arrows to set a level.
(Note that trigger level is shown on display the line that represents the level is not shown)
Are you testing it?
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Just for the laughs, I think I shall email Owon the version 5.6.2 firmware, and ask "Here, would you like this upgrade?" since they didn't bother themselves to reply back with it attached, after THREE emails. ;D
This will not give a positive effect.
Instead, write to them about the fact that without improving the quality of technical support, they will begin to lose sales.
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Hi Folks - first post, be gentle...
I have been reading up on the Owon handheld scopes and I'm keen to know if anyone has any experience using the 'Single' trigger mode.
I'm looking for a portable device that would help me onsite to look at vending style equipment - such as coin mechs and note validators. These device normally output a pule per dollar - so one 50ms pulse for a $1 coin and two 50ms pulse for a $2 coin with a 50ms gap. Pulses from this gear can be either AC or DC depending on the type of vending machine.
I have a cheap Hantek digital scope I normally take onsite which I set to single trigger mode to 'capture' the waveform which lets me measure the length and amplitude of the pulses.
The Owon HSD200 manual says these handheld units can do 'Single' trigger which reads "When a trigger is detected, a waveform is sampled and then stopped" - which sounds perfect.
I'm just keen to know if anyone has and real life experience using single trigger on these units?
Thanks in advance
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Hi Folks - first post, be gentle...
I have been reading up on the Owon handheld scopes and I'm keen to know if anyone has any experience using the 'Single' trigger mode.
I'm looking for a portable device that would help me onsite to look at vending style equipment - such as coin mechs and note validators. These device normally output a pule per dollar - so one 50ms pulse for a $1 coin and two 50ms pulse for a $2 coin with a 50ms gap. Pulses from this gear can be either AC or DC depending on the type of vending machine.
I have a cheap Hantek digital scope I normally take onsite which I set to single trigger mode to 'capture' the waveform which lets me measure the length and amplitude of the pulses.
The Owon HSD200 manual says these handheld units can do 'Single' trigger which reads "When a trigger is detected, a waveform is sampled and then stopped" - which sounds perfect.
I'm just keen to know if anyone has and real life experience using single trigger on these units?
Thanks in advance
Owner here. Yes it works well. Have a look at Kim Wong's review of the HDS272S on YouTube.
PS: I remember playing around with "Mars" MS111/ME111 coin mechs, back in the 90s .my friend got then from an arcade she worked at here in England. They were (are?) made from very robust black glass reincorced nylon, if I recall. They had sense coils embedded into the plastic with clear resin, a stainless steel, solenoid-controlled gate (reject ramp?) and IR break-beam opto coupler pairs in the coin path, and I think a PNP output via pin headers.
I don't suppose you have any you could spare? I've been looking for years, merely for sentiment, as they are fascinating devices.
Thanks. :)
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I'm just keen to know if anyone has and real life experience using single trigger on these units?
It should work OK for what you need.
(In image: constant 1V power source output that has a 5V spike at power off.)
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For those with HW version 3.0, here is firmware version 5.6.2 for HDS272S (it might work with other devices but I would not take the risk and I assume no liability for any bricked device). Best is still to ask Owon directly to make sure you have the correct version.
The file includes FPGA + OS upgrade.
To spare effort for HDS272 (without signal generator) owners, this fw does not apply.
HW 3.0 FW5.4.0 - get "Upgrade error 3"
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Hi folks,
I have read already for a couple of months now and I decided to get one for car repairs.So I am new in the world of these handhelds.
So I got now the OWON HDS 242S, but I have an issue, because this damn thing is in Chinese and I can not switch it to English as this is nowhere written...
Can anybody give me a hand on it, please?
I even don´t know how the get the firmware version out of it... Any hints?
Thanks a lot.
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So I got now the OWON HDS 242S, but I have an issue, because this damn thing is in Chinese and I can not switch it to English as this is nowhere written...
System button -> F2 button -> F1 button
System -> [System] -> [Language]
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Ahhhh... there we are.
Thanks a lot @tly, appreciate that! :-+
Now it is usable. Why the heck don´t they just add a note somewhere on their page. :palm:(don´t want to speak about changing the manual... :-DD )
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Why the heck don´t they just add a note somewhere on their page.
To Owon's credit, they actually did include details on how to change the language back, in the upgrade instructions PDF in the firmware attached to post 83 (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3624563/#msg3624563) of this thread. I'm not sure why that PDF wasn't included in the latest upgrade zip that was posted.
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Why the heck don´t they just add a note somewhere on their page.
To Owon's credit, they actually did include details on how to change the language back, in the upgrade instructions PDF in the firmware attached to post 83 (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3624563/#msg3624563) of this thread. I'm not sure why that PDF wasn't included in the latest upgrade zip that was posted.
An intelligent company would save prefs and restore them after updates.
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So they really "forget" the settings on updates? Really??? :palm:
I didn´t yet update it, because I was otherwise engaged, to look how to find out the current firmware. That was the plan for tomorrow.
Let´see what I got so far.
...and please be patient with me. I am new in the world of these handhelds. At work we have better oscilloscopes but not usable at my car. That was the reason to buy an own. I think I will have the one or the other question within the next weeks.... pretty sure.
And nice to have a community here.
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So they really "forget" the settings on updates? Really??? :palm:
I didn´t yet update it, because I was otherwise engaged, to look how to find out the current firmware. That was the plan for tomorrow.
Let´see what I got so far.
I don't know about any other settings, but forgetting the language is a HUGE faux pas, and demonstrates incompetent programming.
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Please I need Help!! I flashed V5 firmware on an older version board (2.0 stupid me didn't know owon had different board rev's) and it essentially bricked the display portion. I do have button functions but no display and can still flash new firmware so if anyone has ver 3.1-3.2 for VER 2.0 board HDS272S, PLEASE I need it badly!! it would be extremely appreciated :-+
Thank you very much!
Daniel
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Please I need Help!! I flashed V5 firmware on an older version board (2.0 stupid me didn't know owon had different board rev's) and it essentially bricked the display portion. I do have button functions but no display and can still flash new firmware so if anyone has ver 3.1-3.2 for VER 2.0 board HDS272S, PLEASE I need it badly!! it would be extremely appreciated :-+
Thank you very much!
Daniel
Bless you, Daniel. You are not "stupid" - we only know what we know, and we learn from our mistakes - they are invaluable. I hope someone can find the firmware for you, and I'll try to remember to have a trawl around the net, later on. GOD bless you.
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Thank you eti. I think the swelling is finally going down from banging my head on the table.
|O
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Please I need Help!! I flashed V5 firmware on an older version board (2.0 stupid me didn't know owon had different board rev's) and it essentially bricked the display portion. I do have button functions but no display and can still flash new firmware so if anyone has ver 3.1-3.2 for VER 2.0 board HDS272S, PLEASE I need it badly!! it would be extremely appreciated :-+
Thank you very much!
Daniel
You need send e-mail to this info@owon.com.cn adres and request last firmware fore you h/w vercion pcb.
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Please I need Help!! I flashed V5 firmware on an older version board (2.0 stupid me didn't know owon had different board rev's) and it essentially bricked the display portion. I do have button functions but no display and can still flash new firmware so if anyone has ver 3.1-3.2 for VER 2.0 board HDS272S, PLEASE I need it badly!! it would be extremely appreciated :-+
Thank you very much!
Daniel
You need send e-mail to this info@owon.com.cn adres and request last firmware fore you h/w vercion pcb.
Good luck, the Chinese are all on holiday for CNY.
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Damn, forgot about that. I emailed them 'bout a week ago, still hadn't heard anything. There was someone on here who received 3.1 or 3.2 via email from them, for the life of me can't find that person.
I tried 1.7 with no luck.
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Please I need Help!! I flashed V5 firmware on an older version board (2.0 stupid me didn't know owon had different board rev's) and it essentially bricked the display portion. I do have button functions but no display and can still flash new firmware so if anyone has ver 3.1-3.2 for VER 2.0 board HDS272S, PLEASE I need it badly!! it would be extremely appreciated :-+
Thank you very much!
Daniel
You need send e-mail to this info@owon.com.cn adres and request last firmware fore you h/w vercion pcb.
It’s not April fools day quite yet. Nice to see guy have a sense of humour though. 😁
One has more chance of Freddie Mercury serenading them at the kitchen window than Owon fulfilling a basic support request.
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Please I need Help!! I flashed V5 firmware on an older version board (2.0 stupid me didn't know owon had different board rev's) and it essentially bricked the display portion. I do have button functions but no display and can still flash new firmware so if anyone has ver 3.1-3.2 for VER 2.0 board HDS272S, PLEASE I need it badly!! it would be extremely appreciated :-+
Thank you very much!
Daniel
You should add the first 4 digits from S/N off device too.
Good luck.
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Just maybe.... this is exactly why they don't just post the firmware images to their web site. Too many combinations of options and users will just flash anything they download.
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Just maybe.... this is exactly why they don't just post the firmware images to their web site. Too many combinations of options and users will just flash anything they download.
It seems you’re not familiar with their other support page, which offers exactly this same mix of hardware versions, firmware variants and serial number requirements for updating - and yet, sure as I sit here, it sits there and offers firmware.
Let’s not dance around the elephant in the room any more, and keep on naively pretending - they’re useless, and don’t care one bit about support. Simple as.
L👀K: ————> https://www.owon.com.hk/supports_firmware_upgrade (https://www.owon.com.hk/supports_firmware_upgrade)
No further proof required.
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@eti So that's what I've heard about OWON.
I own this, this is all on me. I thought perhaps maybe they would have a message like "incorrect firmware for board model" or something, at least that's what I do so as to prevent incorrect firmware for different board revisions that roam the internet.
If they email me back with firmware or I find it somewhere I'll be sure and post it so that others will have it (if I can post files) and let everyone know if it was successful or not.
Thanks to everyone for the help.
Daniel
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@eti So that's what I've heard about OWON.
I own this, this is all on me. I thought perhaps maybe they would have a message like "incorrect firmware for board model" or something, at least that's what I do so as to prevent incorrect firmware for different board revisions that roam the internet.
If they email me back with firmware or I find it somewhere I'll be sure and post it so that others will have it (if I can post files) and let everyone know if it was successful or not.
Thanks to everyone for the help.
Daniel
Yes, one would hope they’d have had the sense to employ such checks, hmm? Never underestimate human laziness (esp programmers - it’s a known fact)
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An alternate way could be to buy the screen being used in 3.0 board (or at least screen with same resolution and driver). You may have to reorder some pins though, but after that you may be able to use the last firmware version with all fixes. Could you post pictures of your board and screen PCB ?
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Yes I agree eti!! and circuit debugging/testing has been lost in the wind.
@optotester Nah it's not that big of a deal I'm sure when I get the OS/FPGA firmware it'll be just fine. Bootloader and OS is all working fine. I know they changed LCD's and the driver for the LCD is in the FPGA firmware file.
Daniel
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An alternate way could be to buy the screen being used in 3.0 board (or at least screen with same resolution and driver). You may have to reorder some pins though, but after that you may be able to use the last firmware version with all fixes. Could you post pictures of your board and screen PCB ?
That sounds like a terrible, convoluted idea - the long way round a simple issue.
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I do agree that it might not be the best idea but if firmware is not updated for devices with old screen version, it means you will never get any fix and have to live with bugs if you do not replace the screen. That is not that great either
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I do agree that it might not be the best idea but if firmware is not updated for devices with old screen version, it means you will never get any fix and have to live with bugs if you do not replace the screen. That is not that great either
Your idea would have to be an absolute LAST resort, having exhausted absolutely ALL other avenues for many weeks (I speak personally). Fools rush in, and to rush into this would mean making a mountain RANGE out of a molehill, whilst simultaneously voiding the warranty (and then, also, he'd have a hybrid device INCOMPATIBLE WITH FUTURE FIRMWARE VERSIONS which is a VERY short-sighted "solution")
I would counsel to exercise great caution and use wisdom and discernment before heeding any suggestions such as this, as logical and clever as they may seem. This SEEMS a "good idea", but when you think through it with long-range foresight, you will find it seems a poor choice.
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I do agree that it might not be the best idea but if firmware is not updated for devices with old screen version, it means you will never get any fix and have to live with bugs if you do not replace the screen. That is not that great either
Your idea would have to be an absolute LAST resort, having exhausted absolutely ALL other avenues for many weeks
Maybe if this was a $10k+ unit, but at the <$200 price point, with the warranty already possibly voided by loading software provided by a 3rd party (even if that 3rd party got it from Owon), I'd recommend they just buy another unit (exact replacement, or another brand) with expedited shipping. Better to have a working tool in a day or two, than to waste "many weeks" of productive time, working with tech support who are currently celebrating the Chinese New Year.
And once you've received the new unit and written off the first unit, then I see no reason not to do some thoughtful probing to see if you can mod/fix it. I've got a number of screens in my parts bin. If one of them has a matching pinout (power/ground/signal level+direction), I'd give it a go. I have plenty of experience with these sorts of devices, so while I wouldn't recommend this possible fix to a random person on the street, I'd feel perfectly comfortable trying it myself.
Best case, you now have two working units. I'd argue that the repaired unit *will* be compatible with future firmware versions, but for the "wrong" serial number, since by the definition of this scenario, it's compatible with the software currently loaded (which is also for the wrong serial number). And even if it were not so, you could presumably reverse the mod to restore the original screen after another software load.
Worst case, the unit that's already broken stays broken. Since you diligently checked the pinout before plugging anything else in, no electrical harm was done, so it's not any worse off either. Dave has taken a soldering iron to much more expensive tools in his videos (and not as a last resort). If you're lucky, it might be as simple as replacing the cable in the ZIF connector. That said, I probably wouldn't run off to buy screens I didn't already have on hand until I'd heard back from support (and used my new tool in the meantime).
And despite all my text above, harddkyss said:
it's not that big of a deal
with respect to the screen-swap suggestion. Since it's ultimately their problem to solve, I'd say that's the end of that discussion for now.
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So my HDS2102S just arrived!
(https://i.imgur.com/EqadeyIl.jpg) (https://i.imgur.com/EqadeyI.jpg)
Hooked this up to a pulse generator to try and characterize bandwidth (kinda).
Setup:
- Bodnar fast risetime pulse gen
- Rigol ADP0150BNC 50Ω adapter
- Included OWON OW3100 100MHz probe, compensated w/ internal siggen
- Some sloppy cable routing and general inattention to detail and process
The measurement features here are a little restrictive so I'm trying to place the cursor at my best-guess for the 10% and 90% voltage points on the waveform below to indicate rise time.
(https://i.imgur.com/bRNNvCLl.jpg) (https://i.imgur.com/bRNNvCL.jpg)
Back of the napkin math has a 2.6ns rise time working out to about 135MHz of bandwidth.
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So my HDS2102S just arrived!
Nice toy. Grats.
How many days did you used it before posting ?
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So my HDS2102S just arrived!
Nice toy. Grats.
How many days did you used it before posting ?
(https://i.imgur.com/yuy9nucl.png)
How many days did you used it before posting ?
(https://i.imgur.com/HW2E91Bl.png)
How many days did you used it before posting ?
oh, about a year or so.
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I got my HDS272S last week from Amazon (hardware version 2.1.0). I paid $206 for it. I see that for about the same price I can get the HDS2102S from Banggood.
Should I return the HDS272S and get the HDS2102S?
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I got my HDS272S last week from Amazon (hardware version 2.1.0). I paid $206 for it. I see that for about the same price I can get the HDS2102S from Banggood.
Should I return the HDS272S and get the HDS2102S?
Well what do YOU think :-+ :P
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So my HDS2102S just arrived!
Where did you order it from?
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Ordered Jan 21 from Banggood.
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So my HDS2102S just arrived!
Nice! Would love to see photos of the new board.
Just thinking out loud here........ Resetting the firmware number sequence probably means a new generation of PCB was developed for the HAD1511 DAC and tweeks or redesign of the front end to meet the 100+MHz. I'm guessing that at some point in the future this new board will be used in the HDS242/HDS272 (unless they're phased-out completely) and the difference between the models will be strictly software driven (ala Siglent, Rigol, others). That way they could continue to have only one BOM for this line of product, getting their best volume pricing on the components.
Perhaps a potential move up to 120MHz and a memory upgrade down the road?? That would allow them to stay well ahead of Hantek.
Specs in the latest HDS200 series owner's manual already shows the HDS2102S has a 500MSa/s rate for this new DAC compared to the 250MSa/s we have now, maybe this will spill into the 242 & 272?
Wishful thinking... :popcorn:
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I received the HDS2102S earlier today.
S/N 2152*** (presumably built in week 52 of 2021)
SW: V1.3.3
Checksum: 67f52158.
I scanned the earlier parts of this thread, and tested most (if not all?) of the reported shortcomings. Since tly posted the nicest list, I'm using their order, even though not all of the bugs were first reported by them. You can find their postings here:
tly post a-e (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3923708/#msg3923708)
tly post f-g (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3935830/#msg3935830)
tly post h-i (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3938011/#msg3938011)
a) Fixed. "Channel 2 is Off" message never appeared for me during my usage
b) Fixed. I was able to manipulate the frequency after returning to the AWG screen
c) Fixed. Upon returning to the Osc screen, I see a sine
d) Present. Changing from sample to peak affected the frequency measurement (but not the counter). I looked around the waveform after stopping, and didn't see any double edges, but maybe I just didn't look closely enough.
e) Fixed. There are still a number of quirks in the AWG settings (for instance, the allowed adjustment ranges change when toggling between frequency and period), but this particular one is fixed.
f) Fixed. Recalling cursors from a saved config appears to behave as expected.
g) Fixed. Time cursors remain in units of time.
h) Present. Battery indicator jumps from ~6pixels to "low battery" at around 3.76V (measured both cells). This could be intentional, depending on power supply margins needed.
i) Present. However, as explained in an earlier post, an AC trigger coupling with a DC signal coupling doesn't lend itself easily to a reasonable way to display
The behaviors surrounding channel selection and the auto button, as described by Flopdoodley (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3958085/#msg3958085) are also still present.
The buzzer option is still missing, as described by rn777 (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3954185/#msg3954185)
Similar to luma, I was excited to see how the unit performed when provided a fast edge input from one of Leo Bodnar's fast edge generators (https://www.eevblog.com/forum/projects/yet-another-fast-edge-pulse-generator/msg1251589/). Since the single channel sampling rate is 500MHz, the absolute best case would be 2ns. I measured closer to 2.8ns by eye, but as luma mentioned, it's hard to tell with much certainty on the unit itself. Maybe extracting the waveform and analyzing on a computer might provide some insights. I suspect that due to the sin(x)/x interpolation, the real edge time would be best measured by doing some statistical analysis on a bunch of the measured edges.
I investigated the pulse performance based on how it was input. I tried a direct connection (the pulse generator has a BNC connector), using the spring ground on the included OW3100 probe, and also tested the performance of two cheap Daniu P6100 probes, one on each channel, but only one channel at a time. I saved all four of these configs as reference waveforms, then attached the clip ground on the OW3100 probe to the edge generator, to get the screenshot "pulse_inputs_2.png".
I also tested out the 20MHz bandwidth limiter, by capturing a reference waveform of the (directly connected) edge generator, and then turning on the bandwidth limit. This comparison is screenshot "pulse_bw_limit.png".
I popped the back off, and was surprised to discover that the batteries are literally taped into the unit. I don't recall seeing that on earlier models. I means that in order to swap them out for the first time, you have to first remove the whole back cover. I didn't realize this before attempting to pry them out with a plastic spludger, since I didn't want to open it with power still applied, thus the small scuff marks. The board is dated 2021-09-16, and has a revision of HDS2102x_main_V1.0
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Ran another test, to see how closely aligned in time the two channels are. Here, I'm using the fast edge generator as the input to both channels (via the cheap P6100 probes). There is some variation in the alignment from one capture to the next, but they generally stay pretty close to each other, so can't complain too much about relative timing. I suspect some of the variation is due to the interpolation of the exact sample points. Also nice to see that the rise time appears very close to 4ns in two channel mode, which is the best you could get with a 250MSPS rate.
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Because there was some doubt as to whether or not it could play "oscillofun" (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3918176/#msg3918176), and I said I'd try it out if nobody else did (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3921602/#msg3921602) I went ahead and played the "oscillofun" song from my laptop into an audio patch cord, and clipped the probes to the other end of the cord. Sure enough, it shows up on screen! I didn't record a video, since it looks nearly identical to the original video that was posted, but I did take a photo as evidence. I also gave a couple other tracks a try, like YouScope, but results were generally so-so, as one might expect with a cheap DSO.
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I also received my HDS2102S today. I hooked it up my 100Mhz OCXO. It can measure 100Mhz quite well.
Using the same 100mhz probe. The measured VPP voltage is bit higher than HP which I think it is more accurate (less roll off).
There is probably a bit of opamp DC offset after it is warmed up, so need to run auto calibration if want to make the center line right on the center. No big deal.
The multimeter AC bandwidth is up to 1Khz according to my test.
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Although it doesn't have FFT feature in the scope.
I found out that its PC software has FFT feature.
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@gtube - on your picture of the 100MHz sine, the horizontal orientation is messing with me. Can you confirm that it says "2.0ns" as the horizontal div duration, but that the period shown on screen is actually only 4 divs across? If so, then that seems like a new bug, and either the waveform should actually take up 5 divs (5*2ns = 10ns), or should display a horizontal div of 2.5ns (4*2.5ns = 10ns)
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@gtube - on your picture of the 100MHz sine, the horizontal orientation is messing with me. Can you confirm that it says "2.0ns" as the horizontal div duration, but that the period shown on screen is actually only 4 divs across? If so, then that seems like a new bug, and either the waveform should actually take up 5 divs (5*2ns = 10ns), or should display a horizontal div of 2.5ns (4*2.5ns = 10ns)
HP shows 2x5ns = 10ns. The HDS2102S shows 4x2ns = 8ns. It is definitely a bug!
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I scanned the earlier parts of this thread, and tested most (if not all?) of the reported shortcomings.
...
d) Present. Changing from sample to peak affected the frequency measurement (but not the counter). I looked around the waveform after stopping, and didn't see any double edges, but maybe I just didn't look closely enough.
...
h) Present. Battery indicator jumps from ~6pixels to "low battery" at around 3.76V (measured both cells). This could be intentional, depending on power supply margins needed.
i) Present. However, as explained in an earlier post, an AC trigger coupling with a DC signal coupling doesn't lend itself easily to a reasonable way to display
...
Thanks alot for info.
3.FIXED Osciloscope measured frequency is flawed / wrong when Acqu Mode is set to "Peak detect"
Based on @rn777 it seems they fixed "bug d)" too in later firmware versions.
Regarding "bug h)" - I tend to agree with you: was a design decision.
And regarding "bug i)": is about setting Chanel to AC coupling and Trigger to AC coupling.
I noted that is more info presented on display in upper side. :-+
/offtopic:
In case you need (cheap) probes for this device check for "P6100 EU version" or "Hantek PP-150". Both have insulated BNC.
Around 16 USD / 2 pcs.
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470mF 25v Jamicon measured as 468.4mF. The second 463.4mF 3300mF 16v is measured as 3320mF.
Which is quite accurate. OWON HDS272S model h / w 3, s / w 5.6.2.
About 3000mF, there is a trick. The device measures a maximum of 2000mF, then shows "OL" - over load (inability to measure). But if you press the trig / delta icon at this point, the measured capacitance above 3000mF will be displayed. As practice shows, quite accurate measurements. More accurate than my Victor 70C multimeter.
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Because there was some doubt as to whether or not it could play "oscillofun" (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3918176/#msg3918176), and I said I'd try it out if nobody else did (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3921602/#msg3921602) I went ahead and played the "oscillofun" song from my laptop into an audio patch cord, and clipped the probes to the other end of the cord. Sure enough, it shows up on screen! I didn't record a video, since it looks nearly identical to the original video that was posted, but I did take a photo as evidence. I also gave a couple other tracks a try, like YouScope, but results were generally so-so, as one might expect with a cheap DSO.
Yes, it's realy video. I record video https://youtu.be/4Rd8Pb8mgm0 (https://youtu.be/4Rd8Pb8mgm0)
I apologize for the doubt. I not have two oscilloscop probe and i used two probe without compensacion capasitor.
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Can any bady wieving it https://www.youtube.com/watch?v=jQjJZbgMw7E (https://www.youtube.com/watch?v=jQjJZbgMw7E) in Owon HDS200?
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Because there was some doubt as to whether or not it could play "oscillofun" (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3918176/#msg3918176), and I said I'd try it out if nobody else did (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3921602/#msg3921602) I went ahead and played the "oscillofun" song from my laptop into an audio patch cord, and clipped the probes to the other end of the cord. Sure enough, it shows up on screen! I didn't record a video, since it looks nearly identical to the original video that was posted, but I did take a photo as evidence. I also gave a couple other tracks a try, like YouScope, but results were generally so-so, as one might expect with a cheap DSO.
Yes, it's realy video. I record video https://youtu.be/4Rd8Pb8mgm0 (https://youtu.be/4Rd8Pb8mgm0)
I apologize for the doubt. I not have two oscilloscop probe and i used two probe without compensacion capasitor.
большое спасибо! :D
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Can any bady wieving it https://www.youtube.com/watch?v=jQjJZbgMw7E (https://www.youtube.com/watch?v=jQjJZbgMw7E) in Owon HDS200?
https://youtu.be/8n9TMQlJwsk (https://youtu.be/8n9TMQlJwsk)
It doesn't restore the video clearly. I think I will get a Owon 14bit scope in order to play it well. ;D
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https://youtu.be/8n9TMQlJwsk (https://youtu.be/8n9TMQlJwsk)
It doesn't restore the video clearly. I think I will get a Owon 14bit scope in order to play it well. ;D
Two notes from this:
1) Did you play the YouTube video, or did you download the WAV file and play it? YouTube uses lossy compression on the audio, so you'll get more noise from that too. I don't expect you to see a large difference, but perhaps some.
2) Your screenshot only shows a capture rate of 500ksps, which is odd since mine was 1.25Msps (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1399637). Turns out, if you press HOR > Length to get 8k, you'll get the faster sps rating. I can't think of a good reason why, though, since the length of the buffer should be independent of the sampling rate.
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https://youtu.be/8n9TMQlJwsk (https://youtu.be/8n9TMQlJwsk)
It doesn't restore the video clearly. I think I will get a Owon 14bit scope in order to play it well. ;D
Two notes from this:
1) Did you play the YouTube video, or did you download the WAV file and play it? YouTube uses lossy compression on the audio, so you'll get more noise from that too. I don't expect you to see a large difference, but perhaps some.
2) Your screenshot only shows a capture rate of 500ksps, which is odd since mine was 1.25Msps (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1399637). Turns out, if you press HOR > Length to get 8k, you'll get the faster sps rating. I can't think of a good reason why, though, since the length of the buffer should be independent of the sampling rate.
You're right. Wav file and 1.25Msps/2.5Msps looks better. Thanks! Very interested to see how 14bits looks like?
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You're right. Wav file and 1.25Msps/2.5Msps looks better. Thanks! Very interested to see how 14bits looks like?
There are a few factors working against this:
- DSOs have finite memory depth, limiting the total number of points that can be displayed
- DSOs have finite bit depth, limiting the sharpness of images
- DSOs generally don't accurately replicate the trace and decay characteristics of phosphor displays
- XY mode is somewhat niche in use cases, so isn't as well optimized or supported as XT mode
- Most consumer electronics with audio outputs are AC coupled, and thus are incapable of accurately rendering the DC waveforms in the audio files (e.g. Jerobeam Fenderson's "Dots" (https://youtu.be/4dUmfV1DW_8))
These all apply not only to the HDS200 series, but to DSOs on whole. There are some models that will do better than others, but even if the HDS200 had 16bit ADCs, I wouldn't expect it to render oscilloscope music particularly well coming from a computer's audio jack, given the limited memory depth, and presumably no phosphor-simulating decay feature. Even my expensive DSO at work does a poor job in this use case. They simply aren't designed with musical images in mind.
The reason oscillofun works alright is because it sticks to simple geometries for the most part, that don't have major DC offsets. There are other songs out there, like ipaghost's "A Silly Scope" (https://youtu.be/eLQYwN8WtK4), that I would expect to render alright on the HDS200, since the shapes are mostly simple. If you want to experiment with more complicated songs though, I'd recommend taking a look at the web-based phosphor oscilloscope simulator here: https://dood.al/oscilloscope/ (https://dood.al/oscilloscope/). You can load files locally, and play them back and watch the show.
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I tried Dancer, as well as Shrooms, and they actually came out better than I expected. I found that 1ms was a pretty good middle ground between having enough samples, and having enough persistence. Obviously if you sample more slowly, you get fewer points and thus less detail. However, if you sample too quickly, then the finite 8k sample space will fill up before you get samples to display the full image.
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I performed a bandwidth sweep from 50MHz to 250MHz (center: 150MHz, span: 200MHz). The signal generator was the "low" port of a TinySA, set to -6dBm. This port is rated up to 350MHz, so the early cutout is almost certainly due to the oscilloscope's response, and not the generator. I have not calibrated the TinySA, so it is possible that other variations in the signal levels are due to the generator, but it's just as possible that they're due to the HDS2102S. The two units were connected via a short SMA cable, and then an SMA to BNC adapter.
Bandwidth Sweep (https://drive.google.com/file/d/1RfbmB7O5orX37WYwfY-hZCXswqwa91Dj/view?usp=sharing)
Two main take-aways:
1) the frequency counter will display up to 119.9MHz, but calls it quits if you feed it 120MHz
2) the ~317mVpp (-6dBm) signal at 100MHz is reduced to ~100mVpp (-16dBm) at 190MHz, ~70mVpp (-19dBm) at 230MHz, and ~40mVpp (-24dBm) at 250MHz, so there seems to be a decent amount of attenuation as the signal approaches the 250MHz shannon-nyquist frequency, which is good since that means little chance of aliasing.
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I received the HDS2102S earlier today.
S/N 2152*** (presumably built in week 52 of 2021)
SW: V1.3.3
Checksum: 67f52158.
. The board is dated 2021-09-16, and has a revision of HDS2102x_main_V1.0
PCB is very similar to HDS272s rev.3
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PCB is very similar to HDS272s rev.3
Have you notice any differences? In the pictures they look identical.
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Have you notice any differences? In the pictures they look identical.
Definitely not identical. Below the battery (near the serial number), note that the buzzer has changed (again). Also, to the right of the buzzer (but left of the metal shielding over the ADCs), there appear to be a number of parts that have changed (or perhaps moved). For instance, there is no 8-pin chip on the HDS2102x board like there was on the HDS272x one.
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PCB is very similar to HDS272s rev.3
Have you notice any differences? In the pictures they look identical.
In the photo pcb date manufactured older than that on HDS272s.
For this reason, there may be a difference in the chips. You need to watch the version of Owon hds 2102 released later than the hds272 revision
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note that the buzzer has changed (again).
This detail does not matter.
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Dates of manufactured
Owon hds272s
2021-09-27
Owon hds2102s
2021-09-16
Need more information about pcb components.
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If so, then that seems like a new bug, and either the waveform should actually take up 5 divs (5*2ns = 10ns), or should display a horizontal div of 2.5ns (4*2.5ns = 10ns)
HP shows 2x5ns = 10ns. The HDS2102S shows 4x2ns = 8ns. It is definitely a bug!
If you get an update let us know.
(Bgd and other chinese shops made alot of eforts to sell all the expensive stuff that was in EU depos in last months .)
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Owon hds272s
2021-09-27
Owon hds2102s
2021-09-16
I guess those are design dates, and the first
four digits of the serial number is year and week.
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If so, then that seems like a new bug, and either the waveform should actually take up 5 divs (5*2ns = 10ns), or should display a horizontal div of 2.5ns (4*2.5ns = 10ns)
HP shows 2x5ns = 10ns. The HDS2102S shows 4x2ns = 8ns. It is definitely a bug!
If you get an update let us know.
(Bgd and other chinese shops made alot of eforts to sell all the expensive stuff that was in EU depos in last months .)
I sent email to Owon to report this bug with the SN. Hopefully, there will be a response.
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New video from Kerry Wong, about the HDS2102S: https://youtu.be/CF3zBHMhQlM (https://youtu.be/CF3zBHMhQlM)
Edit: adding like to the corresponding teardown blog: http://www.kerrywong.com/2022/02/11/teardown-pictures-of-the-owon-hds2102s-oscilloscope-dmm-awg-compared-to-the-hds272s/ (http://www.kerrywong.com/2022/02/11/teardown-pictures-of-the-owon-hds2102s-oscilloscope-dmm-awg-compared-to-the-hds272s/)
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The bug about number of divisions that @hobbeeist and @gtube spoted is visible in Kerry Wong's video. :-DD
At 50 Mhz are 8 divisions ( 16 ns -> 62.5 MHz ) in video at 10:23 (https://youtu.be/CF3zBHMhQlM?t=623).
At 100 Mhz are 4 divisions ( 8 ns -> 125 MHz) in video at 10:55 (https://youtu.be/CF3zBHMhQlM?t=655).
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PS:
Don't trust any of the reviewes posted on Youtube about this device.
My post on Kerry Wong video was pushed last (I suppose due to "unlike" ?!...). It's OK.
I want to thanks to the person who unburied my post - is last on that video.
( Next target: let's see if Kerry is geting a firmware update. It's up to you what you do.)
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Hot off the email, for HDS272S, board version 3.0 ONLY, here’s firmware version 5.6.3
Also check your serial numbers before committing to a potential brick. This is a legit firmware, but we can’t be your nanny 😁
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In response to my requests, I also received this firmware today. v.5.6.3
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In response to my requests, I also received this firmware today. v.5.6.3
Thanks. It's already been posted ^ but thanks :)
:-//
Yours was for V3 boards only and 1168.15 kB while rn777's was 634.82 kB.
They smell like the same firmware versions but for different HW builds.
Best someone compares them closely before buggering their scope.
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In response to my requests, I also received this firmware today. v.5.6.3
Thanks. It's already been posted ^ but thanks :)
:-//
Yours was for V3 boards only and 1168.15 kB while rn777's was 634.82 kB.
They smell like the same firmware versions but for different HW builds.
Best someone compares them closely before buggering their scope.
Let's approach this from a proper perspective, running "sha1sum" on both, as I have here (feel free to replicate) - summary - the files are identical (unzip them first, then run "sha1sum" on each).
As supplied by Owon, mine was uncompressed, and clumsily named "Scope(1).upp" :palm: so I renamed it, and zipped it using "0" ("store" level zipping, no compression)
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Done, see photo attached.
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Previos post https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3973214/#msg3973214 (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3973214/#msg3973214)
In new firmware 5.6.3
1. Switching in resistance measurement mode is very slow.
2. Unlock capasitometer over than 2000mF
3. FIXED Osciloscope measured frequency is flawed / wrong when Acqu Mode is set to "Peak detect"
How to test:
(Use Mode to switch to activate oscilloscope).
In HOR menu check that Acqu Mode is set to "Sample".
In Measure menu activate Frequency for the channel that you are using.
Connect oscilloscope probe to calibration port.
Check the measured frequncy on display ( it should be 1KHz).
Use HOR menu and set Acqu Mode is set to "Peak detect".
Check the measured frequency on display (on my units 2.2 Khz instead of 1KHz).
4.FIXED In Trigger menu: The line that represents Trigger level is shown if Coupling option is set to "DC" but is NOT shown if Coupling option is set to "AC".
How to test:
Press Trig button.
Set Coupling to "DC".
User arrows to set a level.
(Note that trigger level is shown on display like a popup message and a line).
Set Coupling to "AC".
User arrows to set a level.
(Note that trigger level is shown on display the line that represents the level is not shown)
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If you're interesting other function, need write message for support.
The more users write, the faster the questions will be resolved.
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Nice :-+
To sum up:
a) Fixed.
b) Fixed.
c) Fixed.
d) Fixed (a "Counter" option have been added.)
e) Fixed.
f) Fixed.
g) Fixed.
h) Questionable
i) Fixed.
--------------
This is fun: I was writing this post when I got an email from Owon.
It seems that pushing them a bit worked ? I hate when you have to do that.
Edit: I have to check the upgrade file before posting.
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!!! WARNING - THIS FILE
WASN"T HAVE BEEN TESTED!!!
You use the file on your own risk
If you need an update contact Owon first.
This update applies ONLY to:
- device: HDS272S (device with signal generator)
- SN : 2128xxx
- board version: V2.0
- old firmware version: 3.2.0
-----------
Upgrade steps:
First unzip the downloaded file then rename "Scope-V3.3.3_model-HDS272S_board-V2.0_SN-2128xxx.upp" file to "Scope.upp"
1. turn on the HDS scope, push "system" and then select F2 "system", to next page, select "upgrade"
2. connect PC with HDS scope by USB cable, push "system", in next page, select USB as "MSC", the removable disk will pop up.
3. copy the attached "Scope.upp" to removable disk such as H disk.
[ turn off your scope and then turn on again. The scope will upgrade and turn off after finish. ]
4. turn on your scope to check the version number changed in "system" menu，V3.3.3 .
This upgrade package is only applicable to HDS272S, version V3.*.* Upgradeable.
----------
To change language use:
System button -> F2 button -> F1 button
System -> [System] -> [Language]
===========
if anyone has ver 3.1-3.2 for VER 2.0 board HDS272S, PLEASE I need it badly!!
-
!!! WARNING - THIS FILE WASN"T HAVE BEEN TESTED!!!
You use the file on your own risk
If you need an update contact Owon first.
This update applies ONLY to:
- device: HDS272S (device with signal generator)
- SN : 2128xxx
- board version: V2.0
- old firmware version: 3.2.0
I have a HDS272S with the following data:
FW: V3.1.0, SN: 2124XXX and board version: unknown (the about/system doesn't give me this info...)
Can I use this file for the update to the V3.3.3?
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Can I use this file for the update to the V3.3.3?
You need disassemble you're device, and you can see h/w version. Because there are several revisions (2.0, 2.1, 3.0).
You can see this information in this forum.
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I have a HDS272S with the following data:
FW: V3.1.0, SN: 2124XXX and board version: unknown (the about/system doesn't give me this info...)
I would sugest you to wait until next Friday. It seems they are (manually) sending the mails with FW updates in batches.
------------------
Based on the info I gathered:
1. Owon sends the update based on serial number ( the first 4 digits of SN represents the batch or something like that; those 4 digits are marked on display side of board).
2. board version v2.0-2021-03-24 was used for devices with SN between 2118xxx and 2129xxx .
3. initial FW versions of these devices: v3.0.0, v3.1.0, v3.2.0
4. In the update mail is specified : "This upgrade package is only applicable to HDS272S, version V3.*.* Upgradeable."
We need more feedback from those who updated their devices - first 4 digits of SN and FW version used.
The FW file that I posted has following:
- MD5: 4265d84170607fc7827600e9d35d7319
- SHA1: b79c51348f1630828da1d61a36e247b82ca6f452
If you don't want to post the updated FW file that you received at least post the first 4 digits of SN, FW version received and MD5/SHA1 of file.
-
It was probably not a good idea to post my data in the signature.
After I did a firmware update today and changed the firmware from 3.2.0 to 3.3.3 in my signature, the new firmware is now also in my old postings, although the old FW was still on it back then.
But this is only incidental.
After I received a "Scope.upp" from OWON, I tested the new FW and can confirm the results from "tly" (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4015399/#msg4015399) (except for the point "h") I haven't tried that yet.
SHA1: b79c51348f1630828da1d61a36e247b82ca6f452
But I think I found a new bug (bug "k"). I skipped "j" because of the risk of confusion.
The scope has a built-in WOM (Write Once Memory ;)).
I saved all four files with an image using the Save function Type="Image".
I didn't manage to delete these four files or overwrite them with a new image.
Can anybody confirm this or can anybody help me ?
My OWON HDS272S: SW-Version: 3.3.3 - Ser. Nr.: 2128xxx - Mainboard date: 2021-03-24 - Mainboard Version: V2.0
-
Can anybody confirm this or can anybody help me ?
In my owon 272s, this bug is not confirmed.
-
I solved the problem myself.
If you switch on the USB drive from the Scope (in my case G:) in the "preview pane" view in Windows Explorer, you can see the image of the "FIRST" saved file (see attachment "Preview.jpg").
You can delete these files in explorer, but the next time this "preview" is available again.
This image cannot be changed - it's always the same.
If you now double-click on the corresponding file, the image will be opened in an image editing program (see attachment "IMAGE1.jpg") you can see the "content" of the file.
(I had to reformat the file to "jpg", "bmp files" cannot be uploaded here in the forum).
This is then the saved image from the scope.
Can someone explain this behavior to me.
Whether this can be called a bug is up for discussion.
--------------------------------------------------------------------------------------------------------------------------------------------------
My OWON HDS272S: SW-Version: 3.3.3 - Ser. Nr.: 2128xxx - Mainboard date: 2021-03-24 - Mainboard Version: V2.0
-
You can delete these files in explorer, but the next time this "preview" is available again.
This image cannot be changed - it's always the same.
https://neosmart.net/wiki/clear-thumbnails-cache/
-
Many thanks to "tly".
I'm just wondering why I've never encountered this problem before. I've been working with MS Windows for decades now.
-
I'm just wondering why I've never encountered this problem before. I've been working with MS Windows for decades now.
Probably because the scope doesn't have a clock, so the timestamp is always the same. The OS doesn't know the image has changed.
-
Hi,
Read this topic many time because I am thinking to buy model HDS242.
Dont find many information about this model in this topic about FW update for this model.
Anyone use this model HDS242 ?
Plesse share info?
BR
-
Saga Continues.......
Thank you tly for tagging me about 3.3 firmware for for V2.0 board. It's the right firmware for my unit and serial but unfortunately OWON firmware doesn't check board rev, FPGA rev. it only checks for sequential numbers in firmware 1,2,3,4,etc so with me flashing 5.4
it thinks I have the most up to date firmware and it won't flash, (Go figure). Man what a mess, I'm trying to do all this with no screen also just from manual F2,F4,F1,etc.
I tried modifying "TABLE.BIN" to 3.1.0
"2 HDS200 F 3 A 4 1 - V5.6.2 2124920 HDS272S_1 HDS272S OWON"
but it seems it's overwritten on scope start up BEFORE flashing, plus lot's of encrypted checksums and such I'd have to modify. Bummer. :-\
So Thanks' for everyone's help but I think I'm screwed for now.
-
Saga Continues.......
Thank you tly for tagging me about 3.3 firmware for for V2.0 board. It's the right firmware for my unit and serial but unfortunately OWON firmware doesn't check board rev, FPGA rev. it only checks for sequential numbers in firmware 1,2,3,4,etc so with me flashing 5.4
it thinks I have the most up to date firmware and it won't flash, (Go figure). Man what a mess, I'm trying to do all this with no screen also just from manual F2,F4,F1,etc.
I tried modifying "TABLE.BIN" to 3.1.0
"2 HDS200 F 3 A 4 1 - V5.6.2 2124920 HDS272S_1 HDS272S OWON"
but it seems it's overwritten on scope start up BEFORE flashing, plus lot's of encrypted checksums and such I'd have to modify. Bummer. :-\
So Thanks' for everyone's help but I think I'm screwed for now.
I have firmware 5.6.2 and 5.6.3 for my device vith h/w revision 3. Now installed firmware 5.6.3. For experiment i installed version 5.6.2 over 5.6.3. Previously i rename file in this Scope.upp format. The firmware was successful writed and the software version was downgraded. You need to repeat the software installation procedure.
-
O wow, Really?!? hmmmm maybe I'm hitting wrongs buttons. Upon powering on (in DMM mode) I hit SYSTEM,F2,F4 then F2 then power off, then back on, but it never automatically reboots like OWON say's after firmware updates. does that seem Correct? keep in mind I'm doing this blindly so I can only go off sequence of key's.
Thank you for helping me!
-
hmmmm maybe I'm hitting wrongs buttons.
connect device to computer USB port
[power on] > [system] > [f4] > [f1]
internal scope memory should be available like drive.
copy update fw file.
press 3 times the key combination (to be sure you hit the right menu):
[system] > [back] (is the arrow key in upper right side)
[system] > [f2] > [f4] > [f2] > [power off]
disconect USB cable
[power on]
wait for ~5 minutes.
-
Ok, I did that several times and it just beeps 3 times and turns off, then I manually power back on and and no display still. It powers off quick maybe 3-4 seconds after I press power button and should be flashing (Thought it took longer than 3 seconds). and the "Scope.upp" file is gone from drive. But hey thanks for sharing the correct sequence of keys, at least I know the correct way now. Mine Model is identical, same board rev, etc except serial number, mines 2124 and yours I think is 2128.
-
It powers off quick maybe 3-4 seconds after I press power button
It shows an error msg that you can't see it. Check the batteries voltage: should be 4.0V - 4.1V
Btw, under left battery might be a debug port (?).
Check this post:
https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3522164/#msg3522164 (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3522164/#msg3522164)
-
No it's like something's "wong" with firmware type of power off and not battery low power off.
Unpopulated Debug serial header under batteries. Yes I seen that too!!! Never been so happy to see RX-TX-GND. After I finish up here and get back to the office I will see what voltage that TTL is and hook it up and hopefully have some output, it's intriguing that it has "RX"
Just for kicks I Re-Flashed the wrong 5.3.whatever firmware to see/experience what a successful flash would be like and it took it, powered off and did it's thing correctly. Hopefully that Debug header will give some output and I'll report back as such.
I thought about breaking the flash during flashing (Remove the batteries) in hopes it would break the validation process and maybe fall back to a certain mode and accept 3.2 or 3.3 firmware but that's VERY risky, right now I have a functioning bootloader and OS
it's just the Display driver in fw is different. Can't believe I'm the only Dumb a** that did this. (Yea I can).
-
P2200 200Mhz Probe vs Owon stock OW3100 100Mhz Probe.
Both at 10x Settings. Source: Wenzel 12V 100Mhz OCXO.
-
Nice! You know the HOS Software has a FFT function don't you? Be nice to see the noise floor.
-
The lowest it can go is 10mv/div. It is hard to tell the exact noise floor level. According to the screen, it shows 0.8mv - 1.2mv VPP when probe is short, or 1.6mv vpp without any probe.
-
Unpopulated Debug serial header under batteries.
Check the attachment.
Cheap programmer -> MXIC.
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Just received the new V1.4.1 firmware for HDS2102S from OWON.
Upgrade steps:
1. turn on the HDS scope, push "system" and then select F2 "system", to next page, select "upgrade"
2. connect PC with HDS scope by USB cable, push "system", in next page, select USB as "MSC", the removable disk will pop up.
3. copy the attached "Scope.upp" to removable disk such as H disk.
turn off your scope and then turn on again. The scope will upgrade and turn off after finish.
4. turn on your scope to check the version number changed in "system" menu，V1.4.1 .
This upgrade package is only applicable to HDS2102S, version
V1.*.* Upgradeable.
**Remember to run the auto calibration after the upgrade.
-
Following up on my previous post (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3983768/#msg3983768) about the various issues reported in this thread:
Model: HDS2102S
SW: v1.4.1 (thanks for posting, gtube)
a-c) Presumed fixed. Didn't retest.
d) Fixed. Switching sampling mode does not appear to change frequency reported, at least for the probe cal square wave
e-g) Presumed fixed. Didn't retest.
h) Presumed present. Didn't retest.
i) Fixed. Trigger triangle and threshold line appear in all combinations of channel and trigger coupling (AC/AC, AC/DC, DC/AC, DC/DC)
j) Fixed. Flopdoodley's report of the auto usage vs channel selection is not correct for this version. Much more intuitively, pressing auto with a single channel signal present now results in that channel being both activated and selected
k) Present. Still no buzzer option in the system menu.
l) Fixed. The 2ns/div bug appears to be squashed. Setting horizontal to 2ns/div and viewing a 25MHz sine from the signal generator shows a quarter wave as 5 divisions. 2ns/div * 5div = 10ns. 10ns/quarter wave * 4 = 40ns. 1/40ns = 25MHz.
There are still a few quirks with the AWG menuing. The "fix" for most of them is to go to the sine, bump frequency up to over 5MHz, then cycle through the waveform types, then try setting stuff again. Since the AWG doesn't support over 5MHz on anything but sine, it will force an exact lower frequency when you change waveforms, thus resetting most of the parameters.
-
Following up on my previous post (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3983768/#msg3983768) about the various issues reported in this thread
I checked.
Are fixed now.
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Nice! You know the HOS Software has a FFT function don't you? Be nice to see the noise floor.
I emailed them about implementing a spectrum analyzer mode with FFT, but no reply so far! Keeping you guys posted though.
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Nice! You know the HOS Software has a FFT function don't you? Be nice to see the noise floor.
I emailed them about implementing a spectrum analyzer mode with FFT, but no reply so far! Keeping you guys posted though.
Nice :-+
-
Nice to meet you.
We have received the HDS272S V.5.7.1 firmware from OWON and will provide it.
It is compressed with zip.
Have a good HDS200 life!
My Device : HDS272S
Serial : 2148***
Hardware ver. : Unknown
Old Firmware ver. : V.5.3.0
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Nice to meet you.
We have received the HDS272S V.5.7.1 firmware from OWON and will provide it.
It is compressed with zip.
Have a good HDS200 life!
My Device : HDS272S
Serial : 2148***
Hardware ver. : Unknown
Old Firmware ver. : V.5.3.0
For H/W revision 3, upgraded is well.
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Nice to meet you.
We have received the HDS272S V.5.7.1 firmware from OWON and will provide it.
It is compressed with zip.
Have a good HDS200 life!
My Device : HDS272S
Serial : 2148***
Hardware ver. : Unknown
Old Firmware ver. : V.5.3.0
Have you had a chance to find out what changed?
-
Got myself a HDS242S from bangood (CZ). Arrived after a few days with Firmware v4.2.0, SN 2319***, HW rev. 2.2, Board date 2021-09-09. So I did not get the newest hardware revision :( . It has some of the bugs and problems mentioned in this thread like the "peak detect" mode frequency measurement being incorrect, the trigger level line not being visible in AC coupled mode, resistance measurement auto-ranging being quite slow and so on. I contacted owon support for a firmware update mentioning the problems and they quickly responded with an update to v4.6.1 (MD5 184510751767dfc4d7541b9911e82af3, SHA1 25b92f99afda6f78326d534dc7c64e2fb9e572c2). Unfortunately that fixed none of the problems I noticed. Not sure what was actually changed as no changelog was provided :-// Bummer but the issues I found so far are not deal-breakers to me. Maybe there will be further updates down the line though I'm not sure how they handle that once newer HW revisions are out.
Apart from what I mentioned the device seems to work as expected and described elswhere. Got myself a Hantek PP-200 as a second probe (massive overkill frequency wise but it has a plastic shrouded connector and was available at a decent price) and the device is indeed capable of showing some oscillofun like shown in other posts :)
-
BE WARNED!!!
1. Ok the RX/TX header doesn't output anything it's specifically for firmware with Debug enabled.
2. Several others in another forum (Russian) are experiencing bricked HDS's also and they flashed the correct firmware for they're model S/N,etc.
3. OWON basically said "So sad Too bad", there's nothing we can do for you :-//
4. I can move up in firmware numbers but can't go back (Downgrade) I just get 3 beeps and shuts off.
5. So............... that LCD solution is looking more tempting :-// Albeit I don't know if FPGA part has changed.
I have a feeling I'm not dealing with an OEM, but a Distributor FOR the manufacture. I'd sure like to know the name of the Manufacture. All they would have to do is changed that if/then statement. ;D
I boxed it up and put it on the back shelf, 'Till then....... So be VERY CAREFUL flashing even the appropriate firmware for your model as it seems even they are being bricked.
Thanks for everyone's help.
Daniel H.
-
BE WARNED!!!
1. Ok the RX/TX header doesn't output anything it's specifically for firmware with Debug enabled.
2. Several others in another forum (Russian) are experiencing bricked HDS's also and they flashed the correct firmware for they're model S/N,etc.
3. OWON basically said "So sad Too bad", there's nothing we can do for you :-//
4. I can move up in firmware numbers but can't go back (Downgrade) I just get 3 beeps and shuts off.
5. So............... that LCD solution is looking more tempting :-// Albeit I don't know if FPGA part has changed.
I have a feeling I'm not dealing with an OEM, but a Distributor FOR the manufacture. I'd sure like to know the name of the Manufacture. All they would have to do is changed that if/then statement. ;D
I boxed it up and put it on the back shelf, 'Till then....... So be VERY CAREFUL flashing even the appropriate firmware for your model as it seems even they are being bricked.
Thanks for everyone's help.
Daniel H.
1. Do such firmware exist? For what hardware version?
2. please tell a forum. Interesting view.
4. I upgraded and downgraded firmware on My device h/w v3. I not have a problem with it.
-
BE WARNED!!!
1. Ok the RX/TX header doesn't output anything it's specifically for firmware with Debug enabled.
2. Several others in another forum (Russian) are experiencing bricked HDS's also and they flashed the correct firmware for they're model S/N,etc.
3. OWON basically said "So sad Too bad", there's nothing we can do for you :-//
4. I can move up in firmware numbers but can't go back (Downgrade) I just get 3 beeps and shuts off.
5. So............... that LCD solution is looking more tempting :-// Albeit I don't know if FPGA part has changed.
I have a feeling I'm not dealing with an OEM, but a Distributor FOR the manufacture. I'd sure like to know the name of the Manufacture. All they would have to do is changed that if/then statement. ;D
I boxed it up and put it on the back shelf, 'Till then....... So be VERY CAREFUL flashing even the appropriate firmware for your model as it seems even they are being bricked.
Thanks for everyone's help.
Daniel H.
1. Do such firmware exist? For what hardware version?
2. please tell a forum. Interesting view.
4. I upgraded and downgraded firmware on My device h/w v3. I not have a problem with it.
1. Not to consumer, that's usually just reserved for R&D as it adds a substantial amount of un-needed overhead to the device.
2. I'll look again, there's two foreign model's I found so far, one German and one Russian.
4. On some newer board revisions they changed the flash from "Gigadevice" to "Macronix" the Gigadevice has a type of OTP SecureRom that is read only with a hard coded checksum, that's why he told me my version is "NOT upgradable" even though it will accept the flash it will likely end up being bricked with no recovery option, which to me crazy. Even on Macronix's website it states "Not for mass production".
I think that's why their update request is so convoluted and not offered on their website, after reading the contents of the flash chip, sure enough the OTP fuse bit's were on and there's no way to write to it as it's OTP.
He gave me 3.2 tried to flash and it just beeped 3 times.
So lesson learned, don't ever ever assume they know what 'they're doing like I did, only to find out the jokes on me.
Daniel
-
1. Not to consumer, that's usually just reserved for R&D as it adds a substantial amount of un-needed overhead to the device.
2. I'll look again, there's two foreign model's I found so far, one German and one Russian.
4. On some newer board revisions they changed the flash from "Gigadevice" to "Macronix" the Gigadevice has a type of OTP SecureRom that is read only with a hard coded checksum, that's why he told me my version is "NOT upgradable" even though it will accept the flash it will likely end up being bricked with no recovery option, which to me crazy. Even on Macronix's website it states "Not for mass production".
I think that's why their update request is so convoluted and not offered on their website, after reading the contents of the flash chip, sure enough the OTP fuse bit's were on and there's no way to write to it as it's OTP.
He gave me 3.2 tried to flash and it just beeped 3 times.
So lesson learned, don't ever ever assume they know what 'they're doing like I did, only to find out the jokes on me.
Daniel
1. You are have engineering version firmware?
2. Please show link on this forum.
3. I have newer than that other on this forum device owon hds272s. But i not have problem on downgrade. The device is in the signature.
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I found a bug in my hds242 (ver. 4.1.0) - measurments on ch.2 not working, simply showing in state OFF, have anybody noticed same thing?
Yes! The same thing happened to me yesterday, my ch.2 stopped working and I been trying to figure out why since. How did you fix it?
I have the same model as you HDS242S and firmware version 4.1.0.
The way I test is connect ch.2 to the built in 1kHz signal generator and press Auto, but nothing appears on the scope. If I do the same but instead connect to ch.1 it works fine.
I have tried:
- Changing settings back to default (System -> Default settings -> F3)
- Doing a factory reset (F4 -> F4 -> Default -> F2)
- Running auto calibration (F4 -> F4 -> F3 (Auto calibration) -> F3)
But so far nothing has worked. Any suggestions?
-
4. On some newer board revisions they changed the flash from "Gigadevice" to "Macronix" the Gigadevice has a type of OTP SecureRom that is read only with a hard coded checksum, that's why he told me my version is "NOT upgradable" even though it will accept the flash it will likely end up being bricked with no recovery option, which to me crazy. Even on Macronix's website it states "Not for mass production".
"What if": you change that SPI flash with another that's empty ??
(An winbond should work too I think.)
-
Do you remember what you did to fix it? I am having the same problem. I have the same model and firmware version.
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Nice! You know the HOS Software has a FFT function don't you? Be nice to see the noise floor.
I emailed them about implementing a spectrum analyzer mode with FFT, but no reply so far! Keeping you guys posted though.
So far, I have not received an answer from them yet. I contacted them via email when I posted the initial message here and I contacted them via the webform last thursday I think. I don't know how long they normally take to reply, but this seems awfully long. So nothing new about FFT.
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Brothers,
Need help my HDs272s came today and the display is in chinese how can I change it to English?
Thank you!
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Brothers,
Need help my HDs272s came today and the display is in chinese how can I change it to English?
Thank you!
1. Use the Mode button to get to the Scope screen.
2. Press the System button one time (you should be on page 1of 2)
3. Press the F2 button (also says system on the OSD)
4. Repeatedly press F1 to cycle through the languages.
5. Either hit the Return button or wait for timeout.
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Kerry Wong on the 2 ns bug
https://youtu.be/W5jeG-9RZGU
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Hello,
Does anybody know if SCPI commands support multimeter functions? Manual is silent about this.
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Nice to meet you.
We have received the HDS272S V.5.7.1 firmware from OWON and will provide it.
It is compressed with zip.
Have a good HDS200 life!
My Device : HDS272S
Serial : 2148***
Hardware ver. : Unknown
Old Firmware ver. : V.5.3.0
I've a HDS242S with V.5.3.0 firmware! Can I use this update for my OSC?
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Nobody? Really? Come on guys, give me some advice :)
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Nobody? Really? Come on guys, give me some advice :)
I believe if you read earlier in this thread, you'll see a post where somebody tried loading 272 software onto a 242 meter and bricked it. I'd advise contacting Owon directly.
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Hello,
Does anybody know if SCPI commands support multimeter functions? Manual is silent about this.
Good question! The SCPI doc has commands for the Osc and AWG modes, but not multimeter. I guess you could try running some of the typical multimeter commands and see if you get results back? Shouldn't hurt anything to send the request if it's not supported.
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Nobody? Really? Come on guys, give me some advice :)
I believe if you read earlier in this thread, you'll see a post where somebody tried loading 272 software onto a 242 meter and bricked it. I'd advise contacting Owon directly.
I had seen the discussion but I didn't find it anymore ... thanks for the advice :-+
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Good Morning, My problem is not the software/firmware inside the scope, but the computer interface software that I downloaded from the Owon site. The Zip file won't unzip. I'm using a Windows 10 computer. If anyone's had this issue I would appreciate the solution to this problem. Thanks in advance. :-/O
UPDATE: discovered the download I get from the first Owon site was 'blank'....nothing in it....DUHHHH. I went to their
'Official' download site and got a good one. So now I have an o-scope screen, but can't get a waveform on it. More experimenting, I guess.
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That's funny because I just ordered a 272S because I can't get my old Hantek DSO and AWG to work because of unfixable(?) driver certification issues. They used to work on my Win8.1 machine. Anyway, never again Hantek! I also want to replace my TPI Scopemeter 440. And I have an HP 1740 (the one that Dave slaved over). FFT would be nice, though. I paid $240Cdn at Banggood.
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That's funny because I just ordered a 272S because I can't get my old Hantek DSO and AWG to work because of unfixable(?) driver certification issues. They used to work on my Win8.1 machine. Anyway, never again Hantek! I also want to replace my TPI Scopemeter 440. And I have an HP 1740 (the one that Dave slaved over). FFT would be nice, though. I paid $240Cdn at Banggood.
I believe that is the mantra of Hantek owners around the world. "Never Again Hantek!" or NAH for short. NAH!
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I recently picked up a HDS 242 (S#2129XXX, Board 3-21-21 V2.0, Firmware V3.2.1) and upgraded the firmware to V3.3.3. Are there any differences in the performance/accuracy between the different versions of the board?
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Having problems with Owon HDS242 scope portion. I inputed a pure 12v RMS sine wave and got readings on the scope of 34Vpp and a mean reading of 67mv. The 67mv is the problem. If I did my math correctly, with a meter input of 12Vrms, the scope should be reading around 10.8Vav, but it only reads 67mv.
I have updated the firmware to the latest for my meter of V3.3.3.
Anyone else having this issue?
Thanks
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The 67mv is the problem.
The mean value of a sine wave is 0; but due to sampling it will never be exactly 0.
Do this test: set a sine signal with 1Vpp + 1V offset.
The mean value displayed should be around the offset value 1V +/- something.
Edit:
Use Peak-2-Peak measurement and convert the measured value to RMS ;)
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I dug this out the other day as I needed to use a handheld scope for something.
Did the CH2 issue ever get resolved on any firmware versions?
If I ever use Auto on mine it will always default to CH2 for controls even though there is nothing connected to CH2, makes it a real PITA to adjust the timebase for CH1 as I have to keep manually selecting CH1. Or I get the annoying message "Channel 2 is Off"
Mine is:
PCB V2.20
Firmware: V4.2.0
-
I dug this out the other day as I needed to use a handheld scope for something.
Did the CH2 issue ever get resolved on any firmware versions?
If I ever use Auto on mine it will always default to CH2 for controls even though there is nothing connected to CH2, makes it a real PITA to adjust the timebase for CH1 as I have to keep manually selecting CH1. Or I get the annoying message "Channel 2 is Off"
Mine is:
PCB V2.20
Firmware: V4.2.0
From all that I've read to this point, there hasn't been a fix for a firmware version that would run on the V2.20 PCB. It has supposedly been fixed as some point for the firmware for later board models. I also understand you could brick the unit if you try to load firmware not made for that board version.
The workaround that I used was to simply hit the AUTO button a second time to toggle the "focus" back to channel-1 (see exception below).
Note that the scope mode has four different display modes (for lack of a better way to put it), and each of those modes will dictate what the blue arrow keys and the "F" keys do.
They are: CH1/2, HOR, Trig, Measure/Range. Each of these modes will highlight their respective function on the screen.
I found that the toggle to CH2 when hitting the AUTO button ONLY happens when the screen indicates that it's in the CH1/2 mode. In all other modes, it works as it should.
Looking at the screen highlights prior to pressing the AUTO button makes it a little less frustrating because you'll know what to expect and whether to hit the AUTO button a second time.
-
Hello everyone,
I'd like to update the firmware on my OWON HDS272S HW v2.0 FW v3.1.0 serial number 2124xxx. I "think" it should be safe to update to fw v3.3.3 that @tly uploaded, but I'd feel a lot better if anyone who has done so could confirm it worked for them :phew:
While reading this thread and trying to figure out what is the right firmware for my board revision I compiled all the info I found in a document I am sharing below, I have also collected all the uploaded firmware files and images of hardware revisions.
Unfortunately the attachment upload limits don't allow me to upload the whole packed folder here (not even just all the compressed fw files) so I am sharing it on Google Drive here https://drive.google.com/drive/folders/1lULgGCX0rwCR3fdHBU8-bwArSPSJaWcp?usp=sharing (https://drive.google.com/drive/folders/1lULgGCX0rwCR3fdHBU8-bwArSPSJaWcp?usp=sharing) and here is a GitHub gist of the Info Doc https://gist.github.com/fuho/967396859a4f82346095c6abc941a328 (https://gist.github.com/fuho/967396859a4f82346095c6abc941a328).
Here is a repository where I intend to store everything https://github.com/fuho/owon_hds200 (https://github.com/fuho/owon_hds200)
I'd like to ask anyone who has received firmware from OWON to post it here with details like board revision, board date, fw updating from, the first 4 digits of SN or any info that could help anyone else in figuring out how to upgrade without bricking their device really. Feel free to DM me if you prefer. I'll add it to the archive and update this post.
Right now for example we only have one FW for board revision 2.0 and none for 2.1 or 2.2. Thanks a lot if you decide to help :-+
# HDS200 Info Doc v2022-06-23.01
## Firmware
[!OWON FW DOWNLOAD CENTER FOR HDS200]([url]https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=&SortTag=Latest%20Firmware[/url])
### FW v5.7.1
- user: GSR1600
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4030375/#msg4030375[/url]
- model: HDS272S
- hw_version: 3.0
- original fw: 5.3.0
- serial: 2148xxx
- download: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1424170[/url]
- MD5: 6DDE63D0EFFCA1B0C4E647D077DBA560
- SHA-1: 9D3922FAD636A00D0A9C866DF32AFF31AD02FDDA
### FW v5.6.3
- user: rn777
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4013077/#msg4013077[/url]
- model: HDS272S
- hw_version: 3.0
- original fw: 5.3.0
- serial: 2152xxx
- download: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1416373[/url]
- MD5: 02FF935625FD1729A1B8CE0B97DFAAF4
- SHA-1: 8E92F62166E19225EC3F67F65FD92DE4D6308E78
### FW v5.6.3
- user: eti
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4012864/#msg4012864[/url]
- model: HDS272S
- hw_version: 3.0
- download: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1416196[/url]
- MD5: D05A5D23E36E089A6EA952888D019C1B
- SHA-1: F773BB86256D771494D624813D1C2B79F2A9B980
### FW v5.6.2
- user: optotester
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3973145/#msg3973145[/url]
- model: HDS272S
- hw_version: 3.0
- download: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1394687[/url]
- MD5: 587BE31898848BA7E102EA7C8773A116
- SHA-1: 5130E27FFE62733214DA89225DCFEA7506783D4F
### FW v4.6.2
- user: wenesga
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4211791/#msg4211791[/url]
- model: HDS272S
- hw_version: 2.1
- original fw:
- serial: 2146xxx
- download: [url]https://app.box.com/s/h6vcyczfnft1hih4z47wgo76lu6a053p[/url]
- MD5: 75CF54FB80673E3AEDFE30C93E2E8E09
- SHA-1: D91344A74BB6D26851AAF9D6FE5B7F6E58B15711
### FW v3.3.3
- user: tly
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4015513/#msg4015513[/url]
- model: HDS272S
- hw_version: 2.0
- original fw: 3.2.0
- serial: 2128xxx
- download: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1417543[/url]
- MD5: 4265D84170607FC7827600E9D35D7319
- SHA-1: B79C51348F1630828DA1D61A36E247B82CA6F452
### FW v1.5.1
- user: miegapele
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4215118/#msg4215118[/url]
- model: HDS2102S
- hw_version: 1.0
- serial: xxxxxxx
- download: [url]https://www.dropbox.com/s/tkjh575usm05h75/OWON_HDS2102Sv1.5.1.zip?dl=0[/url]
- MD5: 6BC6C317449C66B853698BA14689A18A
- SHA-1: 6C7BC70C006B25AD4965AB1AFB7A1BFA875351BF
### FW v1.4.1
- user: gtube
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4027384/#msg4027384[/url]
- model: HDS2102S
- hw_version: 1.0
- serial: 2152008
- download: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1423126[/url]
- MD5: 40C68BBB4769E3766AAC9F21574547D1
- SHA-1: 2A0F554655BC2A7546DEDD18DE479B6747F3A3B5
### FW v1.7.0
- user: blurpy
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3639409/#msg3639409[/url]
- model: HDS272S
- download: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1250065[/url]
- MD5: D05A5D23E36E089A6EA952888D019C1B
- SHA-1: F773BB86256D771494D624813D1C2B79F2A9B980
### FW v1.7.0
- user: julius.gl
- post: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3624563/#msg3624563[/url]
- model: HDS242S
- original fw: 1.2.0
- serial: 2047xxx
- latest fw: 1.7.0
- download: [url]https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1243775[/url]
- MD5: 764A75B3580B9BECD3CA5F977B0144FB
- SHA-1: 72E5F744DC524B1B6A92AC9690DC31C055A10B47
## Hardware
At some point flash chip changed from from "Gigadevice" to "Macronix". The Gigadevice has a type of OTP SecureRom that
is read-only with a hard coded checksum. Those are apparently "NOT upgradable".
#### HDS2102x_main_v1.0
- board date: 2021-09-16
- models: HDS2102S
- firmware: v1.3.3, v1.5.0, v1.5.1
- serials: 2152xxx,
#### HW 3.1
- HDS200_MAIN_V3.1
- board date: 2021-12-28
- firmware: v5.7.1,
- models: HDS242S
- devices:
- HDS272S (2207xxx - HarleyYan;v5.7.1)
- serials: 2207xxx
#### HW 3.0.1
- HDS200_MAIN_V3.0.1
- board date: 2021-11-20
- firmware:
- models: HDS242
- devices:
- (2204494 - KyleK29)
- serials: 2204494
#### HW 3.0
- HDS200_MAIN_V3.0
- board date: 2021-09-27
- firmware: v5.1.1, v5.3.0, v5.4.0, v5.6.3, v5.7.1,
- models: HDS2102S
- devices:
- HDS272S (xxxxxxx - BetterAndBetter;v5.3.0)
- HDS272 (214xxxx - idolclub;v5.1.1)
- HDS272S (2149xxx - sequoia;v5.4.0)
- HDS272s (2149xxx - eti;v5.4.0)
- HDS272s (2152xxx - rn777;v5.6.3;v5.7.1)
- HDS272 (2152092 - skander36;v5.4.0;v5.7.1)
- HDS272S (2148xxx - oldo439)
- serials: 2148xxx, 2149xxx, 2152xxx,
#### HW 2.2
- board date: 2021-09-09
- models: HDS242S
- firmware: v4.2.0, v4.6.1
- devices:
- HDS272S (xxxxxxx - TheBay;v4.2.0)
- HDS272S (2319xxx - hacs;v4.6.1)
- serials: 2319xxx,
#### HW 2.1
- HDS200_MAIN_V2.1
- board date: 2021-09-09
- models: HDS242S
- firmware: v3.3.0, v4.2.0, v4.6.1
- devices:
- HDS2x2x (2130xxx - Sobakin76;v4.1.0)
- HDS2x2x (2131xxx - Voltlog)
- HDS272S (2131xxx - Flash2Light;v3.3.0)
- HDS272S (2131xxx - TheHWCave)
- HDS272S (2146xxx - wenesga;v4.6.2)
- HDS272S (2141xxx - NathanFulton;v4.6.2)
- serials: 2319xxx,
#### HW 2.0
- HDS200_MAIN_V2.0
- board date: 2021-03-24
- models: HDS272S
- firmware: v3.0.0, v3.1.0, v3.2.0, v3.3.3
- max firmware: v3.3.3
- Used for serial numbers 2118xxx -> 2129xxx
- devices:
- HDS272S (xxxxxxx - sijmen;v3.1.0)
- HDS272S (2124274 - fuho;v3.1.0)
- HDS242S (xxxxxxx - sotos;v3.0.0)
- HDS242S (xxxxxxx - nitromethane;v3.0.0)
- HDS272S (2121xxx - learnelectronics)
- HDS2x2x (2124xxx - exalab;v3.1.0)
- HDS272S (2128xxx - giovannirat;v3.2.0)
- HDS272S (2128xxx - dagobird;v3.2.0)
- HDS272S (2128xxx - saresigi;v3.2.0)
- HDS2x2x (2129xxx - papabol_24;v3.2.0)
- HDS272S (2129xxx - forceman;v3.3.0)
- sn 2124274 has gigadevice flash
#### HW 1.0
- HDS200_MAIN_V1.0
- board date: 2020-09-25
- models: HDS272, HDS272S
- firmware: v1.2, v1.7
- max firmware: v1.7
- devices:
- HDS272 (2047221 - TrendX)
- HDS272S (2047xxx - janiorib)
- HDS272S (2047xxx - julius.gl;v1.2.0;v1.7.0)
- serials: 2047221,
### Unknown Hardware Revisions
HDS272S FW2.01 (RHB)
-
@ExaLab posted same question (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4017181/#msg4017181).
Send him a PM and ask if he solved or not.
and some info that I noted:
janiorib
HDS272s V1.0 2047xxx
Trendx
HDS272 V1.0 2047xxx
julius.gl
HDS242S FW1.2.0 2047xxx max 1.7.0
RHB
HDS272S FW2.01
sijmen
HD272S FW3.10
sotos
HDS242S with version v3.0.0
nitromethane
HDS242S V2.0 (2021-03-24) main PCB and V3.0.0 firmware
HDS272S v2.0-2021-03-24 2118xxx
learnelectronics (youtube review)
HDS272S v2.0-2021-03-24 2121xxx
Exalab
My unit is SN. 2124xxx, Ver. fw-V3.1.0
giovannirat
HDS272S 2128xxx, firmware release 3.2.0
dagobird
HDS272S here with Serial 2128xxx and Firmware 3.2.0
saresigi
Software version: 3.2.0
Ser. Nr.: 2128xxx
Mainboard date: 2021-03-24
Mainboard Version: V2.0
papabol_24
2129xxx serial number FW 3.2.0 Version 2.0 Main board
forceman
HDS272S, FW V3.3.0, PCB: HDS200-MAIN-V2.1
Sobakin76
SN is 2130xxx HDS200-MAIN-V2.1 V4.1.0
Voltlog (youtube review)
2131xxx mb V2.1
Flash2light
HDS272S V3.3.0 sn: 2131xxx
TheHWCave
HDS272S mb V2.1 sn: 2131xxx
TheBay
HDS272S yesterday. Firmware version is: V4.2.0 / MB V2.20 (2021-09-09)
BetterAndBetter
HDS272S V5.3.0
idolclub
HDS272 214xxxx HDS200 PCB MAIN V3.0 (2021-09-27) firmware v5.1.1.
sequoia
HDS272S yesterday (from Banggood), this has firmware v5.4.0 but same PCB version it seems.
Serial is in 2149xxx range.
eti
My serial begins “2149” hardware/board V3.0.
rn777
HDS272s f/w 5.6.3, h/w 3.0, s/n 2152***
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Hello everyone,
I'd like to update the firmware on my OWON HDS272S HW v2.0 FW v3.1.0 serial number 2124xxx. I "think" it should be safe to update to fw v3.3.3 that @tly uploaded, but I'd feel a lot better if anyone who has done so could confirm it worked for them :phew:
I updated to v 3.3.3 my unit (FW 3.1.0, sn:2124xxx) without any problem!
I got this FW directly from OWON (after many unsuccessful preliminary requests...).
So: upgrade without worrying!
-
I have this version
Update Osciloscópio
Model: HDS272S
SN: 2146xxx
Version: 4.6.2
MAIN V2.1
https://app.box.com/s/h6vcyczfnft1hih4z47wgo76lu6a053p
-
Anyone tried to hack it from 40mhz to 70?
No need to BW hack, my HDS242 has resulting rise time not more than 5ns (include generator on SN74HC14 with 5-outs-in-parallel has about 2-3ns) which is 70MHz+ BW, just use proper probes.
So if I use a 100mhz probe on an HDS272S (70mhz), will I be able to use it as an HDS2102S (100mhz)?
-
So if I use a 100mhz probe on an HDS272S (70mhz), will I be able to use it as an HDS2102S (100mhz)?
No, BW is determined by the input stages of the scope not the probes.
-
@ExaLab posted same question (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4017181/#msg4017181).
Send him a PM and ask if he solved or not.
and some info that I noted:...
Hello everyone,
I'd like to update the firmware on my OWON HDS272S HW v2.0 FW v3.1.0 serial number 2124xxx. I "think" it should be safe to update to fw v3.3.3 that @tly uploaded, but I'd feel a lot better if anyone who has done so could confirm it worked for them :phew:
I updated to v 3.3.3 my unit (FW 3.1.0, sn:2124xxx) without any problem!
I got this FW directly from OWON (after many unsuccessful preliminary requests...).
So: upgrade without worrying!
I have this version
Update Osciloscópio
Model: HDS272S
SN: 2146xxx
Version: 4.6.2
MAIN V2.1
https://app.box.com/s/h6vcyczfnft1hih4z47wgo76lu6a053p (https://app.box.com/s/h6vcyczfnft1hih4z47wgo76lu6a053p)
Thanks a lot for the info and the new FW guys. Added it all to the repo.
-
HDS272 - SN - 2150920
HW -3.0
SW- 5.4.0
Updated to 5.7.1 from Owon support site.
https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS242(S)&SortTag=Latest%20Firmware (https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS242(S)&SortTag=Latest%20Firmware)
After update menu is in chinese.
For English: System->F1-F2
-
Anybody knows what software can be used to control this scope via SCPI?
I tried looking for anything, and most of the stuff is for serial interface, but this scope is using raw libusb-win32 driver
-
Just received HDS102S, it has firmware V1.5.0 and there is V1.5.1 on owon website. Reuploaded here (https://www.dropbox.com/s/tkjh575usm05h75/OWON_HDS2102Sv1.5.1.zip?dl=0)
-
I have this version
Update Osciloscópio
Model: HDS272S
SN: 2146xxx
Version: 4.6.2
MAIN V2.1
https://app.box.com/s/h6vcyczfnft1hih4z47wgo76lu6a053p
I upgraded my HDS272S - MAIN V2.1 - 2141xxx from v4.1.0 to v4.6.2 no problem! Thanks a bunch!
-
Message from OWON
Please go to our website to look for latest firmware, https://www.owon.com.hk/download (https://www.owon.com.hk/download)
If you can't find the latest firmware for your scope, the reason is your firmware already the latest, or for your HDS scope, it is latest base on the main board, for example, if your scope is V2.0, it can't update to V3.0 because the main board is different.
-
Looking for a basic osc for testing a few vintage stereo receivers. Strictly hobby. Will the 40mhz version be fine for that?
-
for testing a few vintage stereo receivers.
... an old 20/40 MHz analog oscilloscope might be a better option.
-
Finally found the SCPI example in this thread posted by eti. Tried to test various DMM commands, unfortunately for me, nothing works.
Did an improvement to that script to continuously update data.
-
Hi, everyone! I'm new here and I hope I'm posting this question in the right place. I intend to buy the Owon HDS242S. However, I was wondering if I would be able to use the oscilloscope function and the wave gen function at the same time.
For example, if I wanted to use the wave gen to output a 10kHz sine wave into my circuit and measure the output of my circuit on the oscilloscope, would I be able to do that with the HDS242S?
-
Yes, you can do that without any issues. I guess you could in theory even use multimeter at the same time
-
Hi. I have OWON HDS272S, PCB Version: 3.0 (2021-09-27), SN: 2148 ***
I was looking for a new firmware at:
https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS272(S)&SortTag=Latest%20Firmware (https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS272(S)&SortTag=Latest%20Firmware)
First I entered V5.0.0, found the latest version of V5.7.1.
Then I tried to enter V6.0.0 and found V6.1.0.
Nothing was found when entering V7.0.0. So the latest version is 6.1.0. And its for all HDS200 variants.
Has anyone tried it yet?
-
For me having V5.7.1, 6.1.0 it's not working.
It said "update error".
-
Thanks a lot. I assumed they couldn't be combined. Whoever has firmware series V5 cannot upload another series of firmware, ie V6 or V4.
And BTW, there is new version of software DS Wave.
DS_Wave_HOS_1.2.5.v20220429_Setup.exe
Version before:
DS_Wave_HOS_1.2.4.v20220114_Setup.exe
-
for testing a few vintage stereo receivers.
... an old 20/40 MHz analog oscilloscope might be a better option.
I can't find an old osc for less than this brand new. Why would an old analog be better? Not arguing, just looking for advice.
-
I get my HDS242S today, the firmware version is V5.7.1 and the HW version is V3.1
when I test AWG function, the waveforms for 'Sine' and 'Ramp' looks like OK, but waveforms for 'Square', 'Pulse' and 'Arbitrary' are very strange.
I connect probe to crocodile clip directly when I test.
Is there something wrong with my HDS242S?
-
I can't find an old osc for less than this brand new. Why would an old analog be better? Not arguing, just looking for advice.
Digital scopes are measuring the input signal in different points and the displayed wave form is approximated using math algorithms based on measured values.
In User Manual of HDS is stated that "sin(x)/x" formula is used for waveform interpolation.
Let's assume the device measures the input signal in 2 consecutive points A and B. The points between A and B will be draw on display using something like "sin(B-A)/(B-A)".
So, the displayed wave form is not the exact wave form the of signal.
If is any glitch between point A and B, it wil not be displayed.
When using an analog scope, the displayed wave form is (almost) acurate and will show that glitch.
-------------
Might help (a screen capture of comments attached :P) :
https://www.youtube.com/watch?v=8GR_6QH3uZk (https://www.youtube.com/watch?v=8GR_6QH3uZk)
Just for reference:
https://www.ebay.com/itm/175287845576 (https://www.ebay.com/itm/175287845576)
https://www.ebay.com/itm/175228776929 (https://www.ebay.com/itm/175228776929)
-
HarleyYan, try to use a direct cable (50 ohm), or at least put the probe tip directly to the output through an adapter.
-
I can't find an old osc for less than this brand new. Why would an old analog be better? Not arguing, just looking for advice.
Digital scopes are measuring the input signal in different points and the displayed wave form is approximated using math algorithms based on measured values.
In User Manual of HDS is stated that "sin(x)/x" formula is used for waveform interpolation.
Let's assume the device measures the input signal in 2 consecutive points A and B. The points between A and B will be draw on display using something like "sin(B-A)/(B-A)".
So, the displayed wave form is not the exact wave form the of signal.
If is any glitch between point A and B, it wil not be displayed.
When using an analog scope, the displayed wave form is (almost) acurate and will show that glitch.
-------------
Might help (a screen capture of comments attached :P) :
https://www.youtube.com/watch?v=8GR_6QH3uZk (https://www.youtube.com/watch?v=8GR_6QH3uZk)
Just for reference:
https://www.ebay.com/itm/175287845576 (https://www.ebay.com/itm/175287845576)
https://www.ebay.com/itm/175228776929 (https://www.ebay.com/itm/175228776929)
https://www.ebay.com/itm/265573331684?hash=item3dd56772e4:g:lQsAAOSwWc1iHixz (https://www.ebay.com/itm/265573331684?hash=item3dd56772e4:g:lQsAAOSwWc1iHixz)
Thoughts?
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Is there something wrong with my HDS242S?
You're scope is fine; those signal shapes are due to bandwidth limitation.
Thoughts?
It has 1mv/div so it should be fine.
(output signal of a magnetic turntable cartridge is around 5mV.)
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Figured I'd throw my device info into the mix.
Model: HDS242
SN: 22044xx
Firmware Ver: V.5.6.2 [that came on the scope]
HW Ver: 3.0.1
Production Date: 2021-11-30
Board Picture: https://imgur.com/6h05H3b
I did take a swing at upgrading to the v.6.1.0 firmware with no luck (throws an Error Code 4).
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HarleyYan, try to use a direct cable (50 ohm), or at least put the probe tip directly to the output through an adapter.
I bought a 50 ohm BNC direct cable and get it today, then, I do a same test, but get same result as before :-//. FYR.
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Is there something wrong with my HDS242S?
You're scope is fine; those signal shapes are due to bandwidth limitation.
Thanks for you explain, it looks like I should set the frequency lower than 1Mhz to get an acceptable waveform in AWG function.
the highest frequency of AWG function is only on paper.
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HarleyYan, try to use a direct cable (50 ohm), or at least put the probe tip directly to the output through an adapter.
I bought a 50 ohm BNC direct cable and get it today, then, I do a same test, but get same result as before :-//. FYR.
For me the red zones (from pics attached) show a noise in the signal that can come from the wires. I thought you was refering to this noise ...
Clamps attached to the tips is not the best way to test acuracy of the waveform.
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Adding internal pictures of my 2102S with a different PCB layout. Can't say I am impressed by the battery bodge job where the jumpered both battery negatives together. I see that they populated both BRCL3130MEbattery protection chips (https://datasheet.lcsc.com/szlcsc/2001131003_Shikues-BRCL3130ME_C475652.pdf (https://datasheet.lcsc.com/szlcsc/2001131003_Shikues-BRCL3130ME_C475652.pdf)), so it's weird that they jumpered both together.
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Long time lurker.
Been looking for a handheld and looks like the HDS2102s fell to $199 (Amazon prime day sale?). I'll be giving it a shot, seems like a no brainer for less than the HDS272S? Figured I'd let the forum know too.
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looks like the HDS2102s fell to $199
Owon launched the hds300 series (hds307s and hds310s).
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looks like the HDS2102s fell to $199
Owon launched the hds300 series (hds307s and hds310s).
Would be interesting what they changed besides the color of the case and the 30MHz signal generator.
The technical overview on both models are unfortunately not equal (regarding feature listing) so not good to compare:
https://owonna.com/products_owon_hds300_series_digital_oscilloscope
https://owonna.com/products_owon_hds200_series_digital_oscilloscope
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I'll not start (again) to analize hds200/hds300 product (btw: my bug list has 2 more bugs).
I'll just post this:
- a russian tester/reviewer stated in last 45 secs of his review of hds272s that cleaning the motherboard helped to get more acurate measurements;
- in hds300 presentation (on Owon site) they stated you'll get 6 hours of use. That makes me lough.
If you take out the 18650 cells sold with unit - btw: the cells presented on product page are Panasonic NCR, but you'll get some cheap chinese cells - and use those cells in a power bank and feed the device using USB, you'll get around 8 hours of use.
And that is strange. Even the hds300 series is presented with 6 hours of use, I still can say "the one that designed the power part of this device is a moron."
/my 2 cents
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"the one that designed the power part of this device is a moron."
From looking at mine I agree. I think that they cut off the tab on mine because someone made a layout mistake on the board and the tab interfered with the SMD components next to the tab.
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Would be interesting what they changed besides the color of the case and the 30MHz signal generator.
The technical overview on both models are unfortunately not equal (regarding feature listing) so not good to compare:
https://owonna.com/products_owon_hds300_series_digital_oscilloscope
https://owonna.com/products_owon_hds200_series_digital_oscilloscope
I only noticed one other thing, there's now a high impedance mode on the signal generator.
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I only noticed one other thing, there's now a high impedance mode on the signal generator.
My 2102s has high impedance as well on the signal generator.
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I received the HDS2102S, Serial Number: 2210043
After contact with Owon, the latest firmware is v1.4.1
Owon answered me within 4 days :-+
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Mh, I was wondering....:
1. Is the new 300 series different in something else than 2 hours more declared battery runtime?
2. Is the 272 worth it over the 242? As a matter of fact one cannot expect a decent signal representation with less than ~10 samples per cycle. So they are both ~25 MHz scopes when you use one channel, and 12.5 MHz scopes when you use two.. The only exception seems to be the 100 MHz model, which would get 50-25 Mhz with its 500 Msamples/s...
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1. The 300 series waveform generator goes to 30MHz, up from 25MHz. Not a huge difference, but might matter to some.
2. I think the analog front end quality is the main difference between the 272 and 242. My bet is that it's binned based on process quality, but I don't have two to directly compare.
10 samples per cycle is great, but even high end scopes don't always hit that number. For instance, MSOX6000 is 20Gsps, so you'd say it's a actually a 2GHz scope, even though it has an advertised 6GHz bandwidth? Shannon-Nyquist tells us that you need >2x, so theoretically the 500Msps of the 2102 could work for signals up to 250MHz before aliasing, if the front end was up to snuff (it's not - see earlier posts in this thread).
Most 100MHz signals are not captured properly with a 100MHz bandwidth. To see a 100MHz sine, you only need 100MHz bandwidth and >200Msps. The 2102 can do this. A 100MHz square wave is defined not only by the 100MHz component, but by the odd harmonics, which differentiate it from a pure 100MHz sine. To see a 100MHz square, you'd probably want at least 500MHz of bandwidth (5th harmonic), and thus at least 1Gsps (the 10 samples per cycle you quoted). This is outside of the 2102's capability.
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https://www.youtube.com/watch?v=DTC1h2PWC8g (https://www.youtube.com/watch?v=DTC1h2PWC8g)
https://www.youtube.com/watch?v=CF3zBHMhQlM (https://www.youtube.com/watch?v=CF3zBHMhQlM)
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Just thought I report here for the hds242S at least, when plugged in for charging and ofcourse knowing that ground is now at earth potential. DC waveforms are offsetted by approx -1.5V. This really threw me off for a few hours figuring out what was wrong with my circuit, so I thought I'd share the info here. My bench scope has no offset to the circuit, but the owon does. And through investigation it actually pulls ground to -1.5V and its not a display error. So, don't use while USB is plugged in period, a shame really. I still like this scope for its update rate tho, there is always quirks.
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its typical for some devices that output/input gnd is not necessaily the same as battery/power supply/charger's gnd. so its a good info to know that we should not mess around while its being charged with non floating charger.
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its typical for some devices that output/input gnd is not necessaily the same as battery/power supply/charger's gnd.
I didn't know. I assumed it will be like my bench scope when I connect the usb.
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Page 6 of the manual warns about the lack of isolation.
With the 'scope disconnected from the USB you still don't have isolated BNC connectors – they share a common ground, so beware of trying to probe relative voltages.
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my HDS2102S arrived. everything seems fine... the reason i choosed this compared to other brands, is simply its phenomenal update rate making it apart 1 thousand miles away from the rest in its class. its closing into bench grade DSO like my Rigol DS1054Z. i was looking at UNI-T/Fluke grade DMM+DSO for the longest time, now those black and white display are only in footstep of this owon unit in term of features and price. what was unclear though is if i can make this owon display single wave (instead of 10K of overlapped signals in one display), just like the other brand, because its usually usefull to see single signal for each screen update, now its confirmed it can be done by changing refresh rate to slow in HOR button.
also the firmware in my unit is V1.5.0, the 2ns time scale error reviewed by Kerry Wong in March 2022 is now fixed in my FW. attached pictures is i accidentally made it Mains Live referenced while measuring thyristor based regulator that is also just arrived, since i thought its a neutral line but later realized that neutral pin is connected directly to Live pin on my wall plug :palm: luckily nothing is blown. later attachments showing its reading 50MHz signal at smallest time/div setting with no noticable issue. other thing is i used my Rigol probe that i use with my DS1054Z without needing to recompensate, so they seem to have identical input capacitance.
when i checked for firmware update in their website, i noticed the 200MHz 1GSps version HDS2202S is already out on sale in aliexpress for about 70% additional cost of HDS2102S, no review in youtube yet.. so if anyone interested for speed, there it is. fwiw.
Owon HDS2202S in AliExpress $299 (https://www.aliexpress.com/item/1005004694380751.html?spm=a2g0o.productlist.0.0.50df2920w8e974&algo_pvid=af7069bb-74b1-4368-aa07-d5e165203bda&algo_exp_id=af7069bb-74b1-4368-aa07-d5e165203bda-1&pdp_ext_f=%7B%22sku_id%22%3A%2212000030127723100%22%7D&pdp_npi=2%40dis%21MYR%211372.41%211372.41%21%21%21%21%21%402101e9d316628389029341536e8a7b%2112000030127723100%21sea&curPageLogUid=hHmKf6IeeXq6)
from https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope)
(https://www.owon.com.hk/Upload/image/20211/16/1.jpg)
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also the firmware in my unit is V1.5.0
I'm still on 1.4.1. Does 1.5.0 fix any of the issues listed earlier in this thread (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4028857/#msg4028857)? In particular, I'm interested if they fixed the issues with the AWG GUI. Buzzer menu option might be nice for some, too.
i noticed the 200MHz 1GSps version HDS2202S is already out on sale in aliexpress
Dang. I wish I had a project that needed that sort of bandwidth, so I could justify the upgrade!
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also the firmware in my unit is V1.5.0
I'm still on 1.4.1. Does 1.5.0 fix any of the issues listed earlier in this thread (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4028857/#msg4028857)? In particular, I'm interested if they fixed the issues with the AWG GUI. Buzzer menu option might be nice for some, too.
i dont think i can test all, 1st i dont quite understand all, 2nd there are too many report to test... i checked your version 1.4.1 can be upgraded to V1.5.1 why dont you do it? https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS2102(S)&SortTag=Latest%20Firmware (https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS2102(S)&SortTag=Latest%20Firmware) (see 1st attachment)
quickly test Flopdoodley report about AUTO mode, my version do it more consistently, it doesnt switch trigger channel when press once or twice, but on channel that got signal will be turned on and set as trigger channel, pressing AUTO the 2nd time, its still the same, so its consistent in my version and i think its a feature. i'm not a fan of AUTO button anyway, it can change any settings that i've made manually that i dont want to be changed when pressing that damned AUTO button. i will be very much annoyed if anything i've set manually changed with any unrelated button/menu press, including that AUTO and "Default setting" button.
your concern about buzzer menu in AWG/FG mode, i can see it under System->System (F2) Page 1, but not in the other DSO and DMM mode, maybe they have added it just for you ;) i'm not sure what it does and i'm not sure why i should care. i still can visually see if my press take any effect or not even without buzzer. buzzing on each button can be annoying to me too. its quite loud. ymmv.
quick test on capacitance meter, i think its unusable, not trustworthy. but i like quick respond of continuity mode, much qucker than all my DMMs here, voltage mode seems fine, but for more precise, i need to compare it with Fluke 87V and a voltage reference, later. currently doing leo bodnar pulser to get rise time, during the process of setting cursor etc, i managed to make HOR menu blank once, i pressed the rightmost blank tab (F4) and Back (U-Turn arrow) button, press the HOR menu again now its appear normal, i cant reproduce it again so far, not sure what i've pressed before that, but some process can make it blank. the data wave output file looks gibberish but its too early to make conclusion... attached are images for leo bodnar pulse (on cheap through 50 ohm terminator) on both channel. eyeballing it is 2.8ns eqv 125MHz BW. ymmv.
edit: looking at you leo bodnar pulse, i think you didnt terminate it in 50 ohm... near 2Vpp is my hint. terminated signal should be close to 1Vpp only. ymmv.
(https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1399523;image)
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while trying to implement owon's hds200 CSV format into my VisaDSO, i discovered few Bugs in the CSV file implementation. let me point out so owon can fix in the next fw update
1) "Time interval" section is using only 2 decimal places number in µs unit. resulting higher than 100MSa/s rate, time interval will not be written correctly (1st attachment), at 250MSa/s and above time interval is zero µs. simply changing unit to ns or add more decimal place can fix this easily.
2) about 1K or less sample points at the end (from full 8Kpts), record wrong/corrupted signals, 2nd attachment should show a nice 10kHz square wave, but at the end, it is "squeezed"
3) "Vertical pos" value also can be improved. in 1st attachment, i set CH1 to -0.16div @ 500mV/div, CSV should register -80mV, in 2nd attachment i set CH1 vertical pos to 0.84div ie 420mV, but both files register 0.00mV
btw, plotting leo bodnar rise time in excel from data points in CSV file will only involve 4 points, so its difficult to calculate correctly, better just eyeballing it in dso display imho.
wishlist: CSV can save both CH1 and CH2 in one file, currently only one channel is allowed for each file, and the workaround is we need to manually combine them in PC by hand. if you really want to save space, i think Index column is not necessary, it is just a waste of space, that we can recreate in PC/excel/programming easily. ps: sorry for my bad mouse writing in the attachment :P
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I upgraded to 1.5.1 (545c1313). I can confirm that the buzzer option is in the menu again!
Unfortunately, the AWG GUI is still buggy. For instance, if you set
waveform: sine
frequency: 24MHz
then switch to period mode, you'll see that it says "42ns", however you can't actually edit the units digit, and it actually should read 41.666666667ns. If you switch back to frequency mode, change it to 25MHz, and switch to period mode again, you'll see that it says "40ns", but again, you can't change the units digit.
Now to break things, change the 40ns period to 70ns. Then switch to frequency mode and (laboriously) zero out all the lower digits, starting with the least significant. If you try adjusting the MHz ones digit, you will find that you can no longer set the frequency up to 25MHz. It maxes out with a reading of 24,999,999.9Hz rather than 25MHz.
You can "fix" this by cycling the waveform, since it will truncate to exactly 5MHz for square and then 1MHz for the ramp/triangle, and when you cycle back to sine, you can then set to 25MHz again.
One new bug that appears in 1.5.1 is that the reference waveforms appear to be corrupted in two ways. First, they have discontinuities for some reason. Second, if you save a waveform, then save again to the same slot (or sometimes even to a second slot), you end up with TWO traces, both of which are turned on/off by the same reference control. I think there is an off-by-one sort of thing going on for reference waveform indexing, and then some other sort of issue with the memory storage. After trying to downgrade (and failing - error 4, presumably a version increment check), I then grabbed some 4k length refs, which didn't quite work - they would save one reference later. I then switched to 8k, and they appeared to start working correctly. Not sure what's going on exactly, but something to watch out for.
With respect to the CSV, it's been buggy for multiple reasons for a long time. sequoia reported issues with CSV (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3923522/?topicseen#msg3923522) and unless somebody reports it directly to OWON's support team, I doubt it will get fixed just by posting the issue here.
With respect to the pulse generator, Mechatrommer, you're absolutely correct that I didn't 50ohm-terminate it - just a direct connection. Adding a 50ohm termination with a T-adapter gives the same result as luma found (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg3982922/#msg3982922).
Finally, I'm curious about your experience with the continuity testing. In my testing, the continuity buzzer is SUPER sluggish compared to my other cheapo DMM. Here's a video comparison (https://drive.google.com/file/d/1Vx9sonE-mFvnuEmRg5Qfj9-TjQATSzig/view?usp=sharing).
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Finally found the SCPI example in this thread posted by eti. Tried to test various DMM commands, unfortunately for me, nothing works.
Did an improvement to that script to continuously update data.
This instrument should have SCPI commands for the DMM.
Download the "SCPI Protocol for HDS200 series Oscilloscope" from here:
https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=&SortTag= (https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=&SortTag=)
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Finally, I'm curious about your experience with the continuity testing. In my testing, the continuity buzzer is SUPER sluggish compared to my other cheapo DMM. Here's a video comparison (https://drive.google.com/file/d/1Vx9sonE-mFvnuEmRg5Qfj9-TjQATSzig/view?usp=sharing).
you cant slide scratch probes quickly like that you'll be disappointed with latched continuity tester. latched tester need some latency/delay to beep on, we need to understand this, and make sure our probe is clean. i'm also a fan of non-latched tester like your Best tester in the video, zero delay and we can know if probes are dirty or connected in very brief moment. but non-latched tester on newer auto ranging meter is now as rare as hen's teeth. fyi i built my own dedicated non-latched continuity tester (but now broken, i have no time to repair yet) if i want to do quick sliding test on pcb or smd parts. btw, done comparison with Fluke 87V reading voltage mode AD584JN reference (attached).
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Hello
I think I follow the update procedure but I get: upgrade error 3
I have tried everything.
I put the "Scope.upp" file, downloaded from the Owon site, at the root of the oscilloscope disk.
But I still get the same error.
Anyone have an idea.
I wanted to upgrade the firmware to 1.5.1
Thanks in advance
Model : HDS2102S
Serial Number: 2210043
Version : V1.4.1
CheckSum : 0d55aa00
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sulzer, that's exactly what I did. I do recall there being two downloads on the site - one for the *S, one for the *(non-S). Any chance you downloaded the wrong one?
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Oh big mistake! |O
How could I confuse model 2102s vs 2102 and thus download the wrong firmware.
hobbeeist thank you very much.
Now I'm in V1.5.1
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I received the HDS2102S with new board and firmware.
F/W Version 3.0.1
ADC is not HMCAD1511!
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I dug this out the other day as I needed to use a handheld scope for something.
Did the CH2 issue ever get resolved on any firmware versions?
If I ever use Auto on mine it will always default to CH2 for controls even though there is nothing connected to CH2, makes it a real PITA to adjust the timebase for CH1 as I have to keep manually selecting CH1. Or I get the annoying message "Channel 2 is Off"
Mine is:
PCB V2.20
Firmware: V4.2.0
Answering my own question here but it may help others. I updated the firmware to V4.6.1 from the Owon website and it has solved the CH1/2 Auto issue.
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Hello guys, I just bought the OWON HDS242!
I attached some pictures regarding software information and PCB revision.
I just have one minor problem: I have no batteries right now so the only way to turn it on is via USB cable. The problem is that when i plug it in, the power button starts flashing without stop. The oscilloscope works without any issues but this red flashing light is so annoying!
Here's a video that shows the problem: https://gofile.io/d/FuRrn5 (https://gofile.io/d/FuRrn5).
Is this a feature? Because i can't find any reference about it. Maybe it's because there are no batteries in?
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Very interesting. Firmware v7.1.1. In site https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS242(S)&SortTag=Latest%20Firmware&seek=&curpage=1 (https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS242(S)&SortTag=Latest%20Firmware&seek=&curpage=1)
latest 6.1.0
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The results of a small study.
- The upp file consists of a header and several files.
For the case with the HDS200 line, there are two files inside
1)CPU firmware
2)FPGA firmware.
No pack.
- Firmware files with same FW version, but different device (242/272/242S/272S) - are identical.
The only difference is in the model name in the header of the upp file.
The CPU and FPGA files are the same in all variants.
Known version/model names (in firmware header):
Grouped by matching files in firmware
Version Device platform name
V1.7.0 HDS272S
V1.7.0zz HDS242S
------------------
V3.3.3 HDS272S_1
V3.3.3 HDS272_1
V3.3.3 HDS242S_1
V3.3.3 HDS242_1
------------------
V4.6.1 HDS272S_1
V4.6.1 HDS272_1
V4.6.1 HDS242S_1
V4.6.1 HDS242_1
------------------
V4.6.2 HDS272S_1
------------------
V5.6.2zz HDS272S_1
------------------
V5.6.3 HDS272S_1
------------------
V5.7.1 HDS272S_1
V5.7.1 HDS272_1
V5.7.1 HDS242S_1
V5.7.1 HDS242_1
------------------
V6.1.0 HDS272S_1
V6.1.0 HDS272_1
V6.1.0 HDS242S_1
V6.1.0 HDS242_1
------------------
V1.4.1 HDS2102S_1
------------------
V1.5.1 HDS2102_1
V1.5.1 HDS2102S_1
------------------
V2.0.4 HDS2102_LS
V2.0.4 HDS2102S_LS
Different HW platform:
low speed ADC (MXT208)
1)HDS2*2*
2)HDS2*2*_1
High speed ADC:
3)HDS2102*_1 - ADC HMCAD1511
4)HDS2102*_LS - ADC LS08D1500
It is a pity that there is no firmware from my device on the site.
Only old version (2.0.4)
Used CPU resource:
USART0 - debug console + alternative SCPI (3 pin socket) (115200)
USART1 - DMM Interface (9600)
SPI0 - internal disk nvram
SPI1 - FPGA nvram
ADC - batt monitoring + calibrate procedure
gpio:
PA0 - power key
PA1 - power control (0 - off)
PA4 - SPI0 CS
PB0 - Charger (?)
PB1 - USB detect(?)
PB5-8 - DMM Control
PB12 - SPI1 CS
PC0-2 - Keyboard
PC13-15 - Keyboard
PD3 - DMM Control
PD6 - DMM Control
PE0-1 - Keyboard
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konnor,
I don't see the string "HDS" anywhere in the upp file I used to upgrade. Did you perform some sort of decryption first?
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Yes, some time ago I took care of writing a simple packer / unpacker for OWON firmware (not only for HDS200). If needed, I can post it. But I'm a little worried that this will increase the number of "bricked" devices. Not everyone has a jtag adapter, and the boot sector is not included in the update.
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Need. Please, post it.
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There are two modes of operation - disassemble the firmware into components and assemble the firmware from the components. If everything works fine, then when you perform two operations in sequence, you should get a file that matches the initial file.
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Were there any undocumented features you came across in your investigation? Maybe some secret API commands, or functions that are present, but not called?
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Some undocumented SCPI extension.
!!!DON'T USE command "SECurity"!!!
It removes the protection bits, but I'm not sure that this will not erase the
entire firmware. In this case, the device will be irreversibly corrupted.
Unfortunately, I don't have a 3.0.1 firmware image, and jtag appears to be blocked.
Because of this, I can't do any experiments yet.
I really do not want to roll back to 2.0.4 (which is _possibly_ compatible).
By the way - owners of HDS2102 with firmware 2.0.4 can ask OWON about the possibility of updating to 3.0.1.
main SCPI parser three:
CH1 = SCPI_AddHook(0, "CH1", 0, 0);
SCPI_AddHook(CH1, "DISPlay", (int (__fastcall *)(char *))SCPI_CH1_DISPlay_Set, SCPI_CH1_DISPlayGetText);
SCPI_AddHook(CH1, "COUPling", (int (__fastcall *)(char *))SCPI_CH1_SetupCoupling, SCPI_CH1_GetCoupling);
SCPI_AddHook(CH1, "BANDwidth", (int (__fastcall *)(char *))SCPI_CH1_SetupBandwidth, SCPI_CH1_GetBandwodthText);
SCPI_AddHook(CH1, "PROBe", (int (__fastcall *)(char *))SCPI_SetupProbe, SCPI_CH1_GetProbeText);
SCPI_AddHook(CH1, "SCALe", (int (__fastcall *)(char *))SCPI_CH1_SetupVScale, SCPI_CH1_GetScaleText);
SCPI_AddHook(CH1, "OFFSet", (int (__fastcall *)(char *))SCPI_SetOffset_1, SCPI_CH1_GetOffset);
CH2 = SCPI_AddHook(0, "CH2", 0, 0);
SCPI_AddHook(CH2, "DISPlay", (int (__fastcall *)(char *))SCPI_CH2_DisplaySet, SCPI_CH2_DisplayGet);
SCPI_AddHook(CH2, "COUPling", (int (__fastcall *)(char *))SCPI_CH2_CouplingSet, SCPI_CH2_CouplingGet);
SCPI_AddHook(CH2, "BANDwidth", (int (__fastcall *)(char *))SCPI_CH2_BandWidthSet, SCPI_CH2_BandWidthGet);
SCPI_AddHook(CH2, "PROBe", (int (__fastcall *)(char *))SCPI_CH2_ProbeDividerSet, SCPI_CH2_ProbeDividerGet);
SCPI_AddHook(CH2, "SCALe", (int (__fastcall *)(char *))SCPI_CH2_SetupVScale, SCPI_SCPI_CH2_VScaleGet);
SCPI_AddHook(CH2, "OFFSet", (int (__fastcall *)(char *))SCPI_CH2_OffsetSet, SCPI_CH2_OffsetGet);
Hor = SCPI_AddHook(0, "HORizontal", 0, 0);
SCPI_AddHook(Hor, "SCALe", (int (__fastcall *)(char *))SCPI_HorScaleSet, SCPI_HorScaleGet);
SCPI_AddHook(Hor, "OFFSet", (int (__fastcall *)(char *))SCPI_HorOffsetSet, SCPI_GetHorOffset);
ACQuire = SCPI_AddHook(0, "ACQuire", 0, 0);
SCPI_AddHook(ACQuire, "MODe", (int (__fastcall *)(char *))SCPI_ChangePeakMode, SCPI_GetPeakModeStr);
SCPI_AddHook(ACQuire, "DEPMem", (int (__fastcall *)(char *))SCPI_ChangeDepMem, SCPI_GetDepMemStr);
Data = SCPI_AddHook(0, "DATa", 0, 0);
Data_Wawe = SCPI_AddHook(Data, "WAVe", 0, 0);
Data_Wawe_Screen = SCPI_AddHook(Data_Wawe, "SCReen", 0, SCPI_Data_Wawe_Screen_CH1);
SCPI_AddHook(Data_Wawe_Screen, "CH1", 0, SCPI_Data_Wawe_Screen_CH1);
SCPI_AddHook(Data_Wawe_Screen, "CH2", 0, SCPI_Data_Wawe_Screen_CH2);
SCPI_AddHook(Data_Wawe_Screen, "HEAD", 0, SCPI_Data_Wave_Screen_Head);
Trigger = SCPI_AddHook(0, "TRIGger", 0, 0);
SCPI_AddHook(Trigger, "STATus", 0, SCPI_GetTriggerStatusText);
Trigger_single = SCPI_AddHook(Trigger, "SINGle", 0, 0);
Trigger_single_edge = SCPI_AddHook(
Trigger_single,
"EDGe",
(int (__fastcall *)(char *))SCPI_SetEdgeMode,
SCPI_GetEdgeText);
SCPI_AddHook(Trigger_single_edge, "LEVel", (int (__fastcall *)(char *))SCPI_SetTriggLevel, SCPI_GetTriggLevel);
SCPI_AddHook(Trigger_single_edge, "SOURce", (int (__fastcall *)(char *))SCPI_SetTriggSourcfe, SCPI_GetTriggSourceText);
SCPI_AddHook(Trigger_single, "SOURce", (int (__fastcall *)(char *))SCPI_SetTriggSourcfe, SCPI_GetTriggSourceText);
SCPI_AddHook(Trigger_single, "COUPling", (int (__fastcall *)(char *))SCPI_Setup_AC_DC, SCPI_GetCoupling);
SCPI_AddHook(Trigger_single, "SWEep", (int (__fastcall *)(char *))SCPI_SetSWeepMode, SCPI_GetTriggerModeStr);
MEASuremen = SCPI_AddHook(0, "MEASuremen", 0, 0);
SCPI_AddHook(
MEASuremen,
"DISPlay",
(int (__fastcall *)(char *))SCPI_MEASuremen_Display_Set,
SCPI_MEASuremen_Display_Get);
MEASuremen_CH1 = SCPI_AddHook(MEASuremen, "CH1", 0, 0);
SCPI_AddHook(MEASuremen_CH1, "MAX", 0, SCPI_MEASuremen_CH1_MaxGet);
SCPI_AddHook(MEASuremen_CH1, "MIN", 0, SCPI_MEASuremen_CH1_MinGet);
SCPI_AddHook(MEASuremen_CH1, "PKPK", 0, SCPI_MEASuremen_CH1_PkPkGet);
SCPI_AddHook(MEASuremen_CH1, "VAMP", 0, SCPI_MEASuremen_CH1_VampGet);
SCPI_AddHook(MEASuremen_CH1, "AVERage", 0, SCPI_MEASuremen_CH1_AverageGet);
SCPI_AddHook(MEASuremen_CH1, "PERiod", 0, SCPI_MEASuremen_CH1_PeriodeGet);
SCPI_AddHook(MEASuremen_CH1, "FREQuency", 0, SCPI_MEASuremen_CH1_Freq);
SCPI_AddHook(MEASuremen_CH1, "RTime", 0, SCPI_MEASuremen_CH1_RTime);
SCPI_AddHook(MEASuremen_CH1, "FTime", 0, SCPI_MEASuremen_CH1_FTime);
SCPI_AddHook(MEASuremen_CH1, "PWIDth", 0, SCPI_MEASuremen_CH1_PWidth);
SCPI_AddHook(MEASuremen_CH1, "NWIDth", 0, SCPI_MEASuremen_CH1_NWidth);
SCPI_AddHook(MEASuremen_CH1, "SQUAresum", 0, SCPI_MEASuremen_CH1_SquareSum);
MEASuremen_CH2 = SCPI_AddHook(MEASuremen, "CH2", 0, 0);
SCPI_AddHook(MEASuremen_CH2, "MAX", 0, SCPI_MEASuremen_CH2_MaxGet);
SCPI_AddHook(MEASuremen_CH2, "MIN", 0, SCPI_MEASuremen_CH2_MinGet);
SCPI_AddHook(MEASuremen_CH2, "PKPK", 0, SCPI_MEASuremen_CH2_PkPkGet);
SCPI_AddHook(MEASuremen_CH2, "VAMP", 0, SCPI_MEASuremen_CH2_VampGet);
SCPI_AddHook(MEASuremen_CH2, "AVERage", 0, SCPI_MEASuremen_CH2_AverageGet);
SCPI_AddHook(MEASuremen_CH2, "PERiod", 0, SCPI_MEASuremen_CH2_PeriodeGet);
SCPI_AddHook(MEASuremen_CH2, "FREQuency", 0, SCPI_MEASuremen_CH2_FreqGet);
SCPI_AddHook(MEASuremen_CH2, "RTime", 0, SCPI_MEASuremen_CH2_RTimeGet);
SCPI_AddHook(MEASuremen_CH2, "FTime", 0, SCPI_MEASuremen_CH2_FTimeGet);
SCPI_AddHook(MEASuremen_CH2, "PWIDth", 0, SCPI_MEASuremen_CH2_pWidthGet);
SCPI_AddHook(MEASuremen_CH2, "NWIDth", 0, SCPI_MEASuremen_CH2_NWidthGet);
SCPI_AddHook(MEASuremen_CH2, "SQUAresum", 0, SCPI_MEASuremen_CH2_SquareSumGet);
Function = SCPI_AddHook(0, "FUNCtion", (int (__fastcall *)(char *))SCPI_SetGeneratorMode, SCPI_GetGeneratorMode);
SCPI_AddHook(Function, "FREQuency", (int (__fastcall *)(char *))SCPIFun_Freq_Set, SCPI_Fun_Freq_Get);
SCPI_AddHook(Function, "PERiod", (int (__fastcall *)(char *))SCPI_Fun_Period_Set, SCPI_Fun_Period_Get);
SCPI_AddHook(Function, "AMPLitude", (int (__fastcall *)(char *))SCPI_Fun_Ampl_Set, SCPI_Fun_Ampl_Get);
SCPI_AddHook(Function, "OFFSet", (int (__fastcall *)(char *))SCPI_Fun_Offset_SEt, SCPI_Fun_Offset_Get);
SCPI_AddHook(Function, "HIGHt", (int (__fastcall *)(char *))SCPI_Fun_Hightt_SEt, SCPI_Fun_Hightt_GEt);
SCPI_AddHook(Function, "LOW", (int (__fastcall *)(char *))SCPI_Fun_Low_SEt, SCPI_Fun_Low_GEt);
SCPI_AddHook(Function, "SYMMetry", (int (__fastcall *)(char *))SCPI_Fun_Symmetry_SEt, SCPI_Fun_Symmetry_GEt);
SCPI_AddHook(Function, "WIDTh", (int (__fastcall *)(char *))SCPI_Fun_Width_SEt, SCPI_Fun_Width_GEt);
SCPI_AddHook(Function, "DTYCycle", (int (__fastcall *)(char *))SCPI_Fun_Duty_SEt, SCPI_Fun_Duty_GEt);
SCPI_AddHook(Function, "RISing", (int (__fastcall *)(char *))SCPI_Fun_Rising_SEt, SCPI_Func_Rising_Get);
SCPI_AddHook(Function, "FALing", (int (__fastcall *)(char *))SCPI_Fun_Faling_SEt, SCPI_Fun_Faling_GEt);
SCPI_AddHook(Function, "LOAD", (int (__fastcall *)(char *))SCPI_Fun_LoadOnOff_SEt, SCPI_Fun_LoadOnOff_GEt);
SCPI_AddHook(0, "CHANnel", (int (__fastcall *)(char *))SCPI_ArbChannelSet, SCPI_ChannelGet);
SCPI_AddHook(0, "MODel", 0, SCPI_Get_String_Model);
SCPI_AddHook(0, "SERial", (int (__fastcall *)(char *))SCPI_Set_String_Serial, 0);
SCPI_AddHook(0, "AUToset", (int (__fastcall *)(char *))SCPI_Autoset, 0);
SCPI_AddHook(0, "Selfcorrec", (int (__fastcall *)(char *))SCPI_Selfcorrec_Set, 0);
SCPI_AddHook(0, "SECurity", (int (__fastcall *)(char *))SPCI_SecuritySet, 0);
DMM = SCPI_AddHook(0, "DMM", (int (__fastcall *)(char *))SCPI_DMM_Config_Set, SCPI_DMM_Get_String);
DMM_Configure = SCPI_AddHook(DMM, "CONFigure", (int (__fastcall *)(char *))SCPI_DMM_Config_Set, SCPI_DMM_Get_String);
SCPI_AddHook(DMM_Configure, "VOLTage", (int (__fastcall *)(char *))SCPI_DMMConfVoltSet, SCPI_DMM_Get_String_Voltage);
SCPI_AddHook(DMM_Configure, "CURRent", (int (__fastcall *)(char *))SCPI_DMMConfCurrSet, SCPI_DMM_Get_String_Current);
SCPI_AddHook(DMM, "REL", (int (__fastcall *)(char *))SCPI_DMM_Rel_Set, SCPI_DMM_Rel_Get);
SCPI_AddHook(DMM, "RANGE", (int (__fastcall *)(char *))SCPI_DMM_Range_Set, SCPI_DMM_Range_Get);
SCPI_AddHook(DMM, "AUTO", (int (__fastcall *)(char *))SCPI_DMM_AutoSet, SCPI_DMM_AutoGet);
SCPI_AddHook(DMM, "MEAS", 0, SCPI_DMM_MeasGet);
SCPI_AddHook(0, "VIDEO", SCPI_SetVideo, 0);
SCPI_AddHook(0, "VOLFULL", SCPI_VOLFULL, 0);
Separate command:
STARTDEBUGTXT - HW model info
COLOR - lcd palette setup
SOFTWARERESET - reset
Special key seq:
Sys,sys,up,up,down,down,left,left,right,right - switch key "system" to enter specail menu
in Measure menu:
f3,f3,f4,f4,f3,f4,f3f4 - run some VERY long operations (7 step), with the output of not quite clear results. The operations are really long, and the device does not respond to the buttons at this time.
I can't say what the consequences will be (probably nothing worse than having to reset to default and recalibrate), but BETTER DO NOT EXPERIMENT.
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Hello guys, I just bought the OWON HDS242!
I attached some pictures regarding software information and PCB revision.
I just have one minor problem: I have no batteries right now so the only way to turn it on is via USB cable. The problem is that when i plug it in, the power button starts flashing without stop. The oscilloscope works without any issues but this red flashing light is so annoying!
Here's a video that shows the problem: https://gofile.io/d/FuRrn5 (https://gofile.io/d/FuRrn5).
Is this a feature? Because i can't find any reference about it. Maybe it's because there are no batteries in?
Small update to my problem:
I wrote to OWON directly and they say that yes, if no batteries are installed, the power button will flash.
That's kind of an annoying feature lol.
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Hello guys, I just bought the OWON HDS242!
I attached some pictures regarding software information and PCB revision.
I just have one minor problem: I have no batteries right now so the only way to turn it on is via USB cable. The problem is that when i plug it in, the power button starts flashing without stop. The oscilloscope works without any issues but this red flashing light is so annoying!
Here's a video that shows the problem: https://gofile.io/d/FuRrn5 (https://gofile.io/d/FuRrn5).
Is this a feature? Because i can't find any reference about it. Maybe it's because there are no batteries in?
Small update to my problem:
I wrote to OWON directly and they say that yes, if no batteries are installed, the power button will flash.
That's kind of an annoying feature lol.
Why don't you have batteries?
-
Why don't you have batteries?
Because I thought it would came with batteries lol
I bought it from pollin.de but probably didn't pay too much attention to the description
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blinking button to warn missing batteries is a preferable feature imho. to warn us to get batteries asap. operating without batteries could overload charging circuit, or not recommended because of various reasons.
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Why don't you have batteries?
Because I thought it would came with batteries lol
I bought it from pollin.de but probably didn't pay too much attention to the description
Weird. Must be something with that vendor.
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blinking button to warn missing batteries is a preferable feature imho. to warn us to get batteries asap. operating without batteries could overload charging circuit, or not recommended because of various reasons.
I see the point, yeah that's right. But I hoped for a direct supply via cable, like bypassing the overload circuit or something like that so I wouldn't have to rely always on batteries :D
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ADC area HDS2102S vs HDS2202S:
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To save a thread trawl, would someone tell me what the latest HDS272S firmware is (V3 H/W if I recall) and what it has that deems an upgrade worthwhile? Charrrrz!
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The new V3 version use Chinese made 1Ghz 8bit ADC. Here is the link:
http://linsimicro.com/Products/info.aspx?itemid=5 (http://linsimicro.com/Products/info.aspx?itemid=5)
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The new V3 version use Chinese made 1Ghz 8bit ADC. Here is the link:
http://linsimicro.com/Products/info.aspx?itemid=5 (http://linsimicro.com/Products/info.aspx?itemid=5)
Ah, no, what I meant was, what is the latest firmware, and what is in it to make it worth me upgrading? Thanks!
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The latest firmware is V8.0.1，it can't be downloaded.
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The latest firmware is V8.0.1，it can't be downloaded.
Any chance of opening it, i.e. to see if the hardware is the same?
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You can credit $5 to my paypal i'll do the homework for you...
It’s useful to quote people to whom you’re responding, otherwise we have an ambiguous reply floating in space with no recipient known.
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Yes it is meant as general purpose statement. If quoting name, there is risk of backfire ;D so better not mention it ;) whoever in need will know who the statement is for. Cheers.
Ah, righty Ho 😃
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Just got mine with FW 8.01 (HDS242). Did not (yet) open to check board version.
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Ok, só MB revision is 3.02 from end of July 22 FW 8.01
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Ok, só MB revision is 3.02 from end of July 22 FW 8.01
(just for info:) The batteries can be changed or are glued ?
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Followed the url (from gtube a few postings back) for linsimicro.com's ADC - didn't see anything that looked like a datasheet link, but the few specs (lower on the page) indicate 7-bit ADC (the headline on the page appears to be 8-bit.)
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both. glued with tape, you can strip out and replace the 18650 batteries. i removed the tape in mind so next time easy replace... btw...
3D Printed Handle for OWON HDS ScopeMeter
if someone with 3d printer interested in printing the handle for it, but dont know how to make a model, attached is the zipped stl file.. it needs 3mm diameter (steel preferably) rod where you can slip the handle strip around. the rest, use imagination.
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Ok, só MB revision is 3.02 from end of July 22 FW 8.01
(just for info:) The batteries can be changed or are glued ?
I suppose they can be changed from what I’ve read in different reviews… did not look in detail to that but almost certain they can be exchanged.
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I did a bandwidth test on my new HDS242, use Rigol DS2072A (with 300MHz bandwidth)+ RP3300A probe (300MHz Bandwidth) as baseline, use my MFJ259B as signal generator. The test result shows that the bandwidth of HDS242 should be higher than 70MHz.
So, buy a 40MHz bandwidth DSO can get 70MHz bandwidth ;D
the probe OW3070 provided by Owon is not so good, it is 70MHz, but has a deviation. the probe P7060 is provided by the distributor, it is much beter than OW3070. .
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Hello
Need help.... I damaged my hds 272s scope by accidentally plugging channel 2 probe to the sig-gen output, smoke went out |O, after initial visual checks i found U5 and D11 was burnt, after removing the burnt parts the scope boots up and the multimeter mode is still working, i can switch to scope mode but i have no horizontal line, if anyone can tell me the part # or body # of U5 and D11 im very thankfull...
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i'm surprised that my HDS2102S only can do minimum 10mV/div on 1X probe setting (100mV/div on 10X probe) even though the displayed traces are still very clean. why this device dont let us dial down to 5mV/div, 2mV and even down to 1mV/div at 1X probe? i already email to ask for firmware update to enable this.
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These are my old photos, sorry for the quality.
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i'm surprised that my HDS2102S only can do minimum 10mV/div on 1X probe setting (100mV/div on 10X probe) even though the displayed traces are still very clean. why this device dont let us dial down to 5mV/div, 2mV and even down to 1mV/div at 1X probe? i already email to ask for firmware update to enable this.
My guess is that is because of noise pickup and that in turn is because of ineffective front end shielding. The noise would get worse and worse as the input is made more sensitive (5mv, 1mv, 500uv, etc.) and that would look bad because it would look like a very fuzzy line.
For me though, i have delt with this before and it's not the end of the world i got more information from having a fuzzy line than no line at all. If you stick a sensitive scope across a resistor to sense current (not the best method of course but cheap) you get a very fuzzy current waveform but you can still glean a lot of information from it by thinking in terms of the average of the fuzzyness and then you see a wave that is more familiar.
So in the end they may not have been able to deal with the noise pickup as well as some of the upper end scopes.
Personally i prefer a scope that can go down to at least 1mv and so 100mv at 10x would not be something i would like, but if the prices is right and bandwidth ok i might put up with it anyway. Up to this point i have been dealing with a 1MHz DSO scope, a old old 10MHz analog, and a 15MHz DSO PC based, so something at 40MHz or 70MHz would be an improvement for me.
It is entirely possible to upgrade the front end too, with an external amplifier made with a modern op amp. Maybe we could start a group project to design a 10x front end amplifier. That would quickly turn 10mv per into 1mv per div. The op amps these days are very worthy. Maybe power it with a 9v battery or something simple like that. I would not mind using a 9v battery for that it would draw little current anyway. We'd have full control over noise and input protection that way too.
Even perhaps someone did this already and we could use that design.
-
Hello
Need help.... I damaged my hds 272s scope by accidentally plugging channel 2 probe to the sig-gen output, smoke went out |O, after initial visual checks i found U5 and D11 was burnt, after removing the burnt parts the scope boots up and the multimeter mode is still working, i can switch to scope mode but i have no horizontal line, if anyone can tell me the part # or body # of U5 and D11 im very thankfull...
You say about U5 but on the board where you circled is U6 ... :-//
On my 272 without siggen, U6 is LBAD 9221. I don't have D11 populated.
What HW version you have? My is V3.0. I see that S2084 has adifferent code for U6.
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Hi there, 3 weeks ago I bought a HDS2102S at banggood with a board revision that I haven't seen before. It's hardware version is main_V1.1.1 dated 2022-07-06 and the firmware is version V4.1.0.
Regards Timo
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Hi. I have a question. I bought a HDS242 with firmware version 4.1.0 which according to this site (https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS242(S)&SortTag=Latest%20Firmware) (https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS242(S)&SortTag=Latest%20Firmware)) can be upgraded to 4.6.1. I found out today that another shop has HDS242 with firmware version 6.1.0. Is there a big difference between firmware version 4.6.1 and 6.1.0? Should I return my purchase? I thought the other store wouldn't answer me anymore, so I took the 4.1.0 version because the prices are increasing. Please advise.
Regards.
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@orb I think that you can not put higher software versions on all revisions of mainboards of the HDS series. Every mainboard seem to have slightly changes in routing and even chips. But that does not have to mean newer versions are better. In some cases, expensive US manufacturer chips are just replaced with cheap chinese ones, that ought to have the same specs. As long as your Owon is doing what it is supposed to, I would stick to the version you got.
Regards
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@neo2000, thanks for your answer, you have an interesting point of view. I'll keep this scopemeter, then.
Regarding to the firmware version, here on the forum I saw a post where someone upgraded hds242 from 4.2.0 to 4.6.1. According to the owon site, this is the last available update for hds242 with "this type of mainboard" (for mine mainboard too).
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@orb:
Just enter your current fw version and you'll see the latest fw for your device. This update will work. Attention, don't mix the "S" and non-"S" versions.
@all:
My HDS242 shows a rather big DC offset in 5V and 10V range (at 10x probe setting) when started at normal room temperture. It's over 1,5V when measured by displaying the "mean" value in measure menu. During the scope gets warmer, this offset decreases. When it's operating more than 40minutes (which is the time I had calibrated the device, too) the offset is mostly gone.
I know that Owon states their specification is measured at 30min after cold start, but the offset drift seems a little high for my expectations.
Do your Owons show this heavy temperature drift, too?
Regards
Roger
-
Do your Owons show this heavy temperature drift, too?
Going by HWcave's video #104 A closer look at the OWON HDS272S Scope meter (https://youtube.com/watch?v=6v2UhBz3xZU), temperature drift is an unfortunate feature of this design.
-
Why don't you have batteries?
Because I thought it would came with batteries lol
I bought it from pollin.de but probably didn't pay too much attention to the description
Weird. Must be something with that vendor.
It's due to air freight regulations around shipping lithium batteries. The 18650's in these meters are considered dangerous materials by airlines. Due to this, many products imported into the US from China come without lithium chemistry batteries now, especially individual or small batch shipments. My Handtek 1833C LCR meter from Banggood came without batteries last year. I had to supply my own (thankfully I have a ready supply of 18650's).
If it ships by sea then those regulations don't apply, but I expect for logistical reasons it's easier for suppliers like Banggood and Ali to ship without batteries for all rather than keep up with air vs sea shipments and risk a fine or confiscated shipment. Larger commercial/bulk shipments tend to come by sea, so the batteries would likely be intact if you bought from a more local reseller.
-
@orb:
Just enter your current fw version and you'll see the latest fw for your device. This update will work. Attention, don't mix the "S" and non-"S" versions.
Ok, thanks.
Do your Owons show this heavy temperature drift, too?
Yes, my hds242 behaves similarly. It needs more than 15 minutes of "warm-up" to display the correct (calibrated) values. It makes no sense to calibrate it when it's "cold".
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As another data point, I received a HDS2102S mid November with a serial number 2232xxxx that has v4.0.0 firmware on it. Haven't seen that combination mentioned. Don't have much I can test against really.
Haven't opened to confirm the board revision at this stage.
-
Anyone know if Owon implemented RMS math for Oscope waveforms yet?
Previous posts say not, and it's not in the manual either. Such a shame if not. It's the one complex math function that I find useful.
The 'RMS' bandwidth on a multimeter (even for true RMS meters) is typically around 20-30Khz (1.5Mhz for MX636 if implemeted). Beyond that you need an Oscope with maths.
Computing RMS for sine wave can be done from the average (which the 200 series has), but not all waveforms are sine. E.g. Input current on a non-PFC correct SMPS, or output on a domestic electronic LV lighting transformer (47Khz AC with with a DC bias shift on mine for some reason).
An ideal use case where your DMM bandwidth isn't large enough.
Thanks.
-
OWON HDS200 handheld oscilloscopes have not fully "matured" yet as seen by many HW and FW revisions. At current state this is usable basic scope for what it is, but FW still leaves much to be desired.
OWON also has HDS300 series which is basically the same but slightly improved.
RMS feature is implemented only in the newest and highest BW models - HDS2202(S), HDS307S, HDS310S, HDS320S.
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Ah yes. I missed that on the spec sheet. Top of the range meter has it, and 2.5 times the price to boot.
I wonder why they left RMS out of the lower models. Even 30 dollar toy scopes have RMS. Work in progress. A shame. There's a lot to like about these scopes by the sound of it (latest HW & FW revision). Right form factor. They even take 18650s.
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Hi, I got my SDS2102S
I noticed that it now does 500Ms/s in two channel mode, see pics. It makes sense if you put in a 1Gs/s ADC in the thing. :-+
Firmware is 2.0.4,
Serial nr HDS2102S2218XXX
-
My HDS242 shows a rather big DC offset in 5V and 10V range (at 10x probe setting) when started at normal room temperture. It's over 1,5V when measured by displaying the "mean" value in measure menu. During the scope gets warmer, this offset decreases. When it's operating more than 40minutes (which is the time I had calibrated the device, too) the offset is mostly gone.
I forgot to ask. Which firmware version do you have installed on your hds242? Which motherboard version do you have?
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Hi, I got my SDS2102S
I noticed that it now does 500Ms/s in two channel mode, see pics. It makes sense if you put in a 1Gs/s ADC in the thing. :-+
Firmware is 2.0.4,
Serial nr HDS2102S2218XXX
where did you get HDS2102S that can do 1GSa/s? i still see 500MSa/s in their website... https://www.owon.com.hk/list_handheld_oscilloscopes (https://www.owon.com.hk/list_handheld_oscilloscopes)
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i still see 500MSa/s in their website...
500MSa/s in total -> 500MSa/s per chanel when using 1 chanel or 250MSa/s per chanel when using 2 chanels.
The displayed "500MSa" is the total used, not per chanel.
-
i still see 500MSa/s in their website...
500MSa/s in total -> 500MSa/s per chanel when using 1 chanel or 250MSa/s per chanel when using 2 chanels.
The displayed "500MSa" is the total used, not per chanel.
Owon has increased the capabilities on the HDS2102S. it is now 500Msa/s per channel. it is also proven with the pics I posted earlier by me.
If you still unsure about it, you can look at Kerry Wongs YouTube he made about it some time ago. In this video the sample rate folds back to 250Msa/s when in dual channel mode....
https://www.youtube.com/watch?v=CF3zBHMhQlM (https://www.youtube.com/watch?v=CF3zBHMhQlM)
-
What is the best probe for the HDS272S?
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Owon has increased the capabilities on the HDS2102S. it is now 500Msa/s per channel. it is also proven with the pics I posted earlier by me.
Those pictures relates with HDS2202(S).
For some reason the unit might be marked as HDS2102 but in fact is a HDS2202.
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Owon has increased the capabilities on the HDS2102S. it is now 500Msa/s per channel. it is also proven with the pics I posted earlier by me.
Those pictures relates with HDS2202(S).
For some reason the unit might be marked as HDS2102 but in fact is a HDS2202.
It is not a 2202. A 2202 would show 1Gsa/s on only 1 channel used. My 2102 does show 500Msa/s with only 1 channel in use (as well as 2 channels in use).
Furthermore, if it would be a 2202, the 200MHz signal would not be attenuated so much.
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I noticed that it now does 500Ms/s in two channel mode, see pics. It makes sense if you put in a 1Gs/s ADC in the thing. :-+
Firmware is 2.0.4,
Serial nr HDS2102S2218XXX
Screenshots strongly suggests that 500MSa/s is true with two channels ON. This proves that 1) @Orange is lucky :-DMM and 2) new batch of OWON HDS2102(S) have dual channel 500MSa/s (or single channel 1GSa/s) ADC (contrary to current spec sheet). These HDS200 scopes keep changing and getting better :popcorn:
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My HDS2102S also can do 500MSa/s with both channels active. There was a setting I had to change to make that happen though... Unfortunately, I don't remember the setting, and I can't seem to find it now.
Mine is also 2.0.4 firmware.
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My HDS2102S also can do 500MSa/s with both channels active. There was a setting I had to change to make that happen though... Unfortunately, I don't remember the setting, and I can't seem to find it now.
Mine is also 2.0.4 firmware.
mine is ver 1.5.0, only upgradable to v1.5.1 from their website... V2.0.4 is not an option...
I noticed that it now does 500Ms/s in two channel mode, see pics. It makes sense if you put in a 1Gs/s ADC in the thing. :-+
Firmware is 2.0.4,
Serial nr HDS2102S2218XXX
Screenshots strongly suggests that 500MSa/s is true with two channels ON. This proves that 1) @Orange is lucky :-DMM and 2) new batch of OWON HDS2102(S) have dual channel 500MSa/s (or single channel 1GSa/s) ADC (contrary to current spec sheet). These HDS200 scopes keep changing and getting better :popcorn:
i guess i bought my HDS2102S too early :palm:
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My HDS2102S also can do 500MSa/s with both channels active. There was a setting I had to change to make that happen though... Unfortunately, I don't remember the setting, and I can't seem to find it now.
Mine is also 2.0.4 firmware.
mine is ver 1.5.0, only upgradable to v1.5.1 from their website... V2.0.4 is not an option...
I noticed that it now does 500Ms/s in two channel mode, see pics. It makes sense if you put in a 1Gs/s ADC in the thing. :-+
Firmware is 2.0.4,
Serial nr HDS2102S2218XXX
Screenshots strongly suggests that 500MSa/s is true with two channels ON. This proves that 1) @Orange is lucky :-DMM and 2) new batch of OWON HDS2102(S) have dual channel 500MSa/s (or single channel 1GSa/s) ADC (contrary to current spec sheet). These HDS200 scopes keep changing and getting better :popcorn:
i guess i bought my HDS2102S too early :palm:
This is one time that procrastinating looks like it worked out well to me. Of course now that the 2202s is out, I am slightly wishing I had that one simply for the rms measurement...
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This is one time that procrastinating looks like it worked out well to me. Of course now that the 2202s is out, I am slightly wishing I had that one simply for the rms measurement...
i've been on look out for ScopeMeter for years and i thought its time when i got HDS200 series into my radar... but i guess it will take forever to make a right choice. we cant be too lucky and we cant be too unlucky as well ::) life goes on..
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What is the best probe for the HDS272S?
You can use a Siglent PB470 they are of decent quality, and have an isolated BNC plug
https://www.eleshop.nl/siglent-pp215-passieve-probe-200-mhz-5198.html (https://www.eleshop.nl/siglent-pp215-passieve-probe-200-mhz-5198.html)
I use two Siglent PP510 100MHz probes on the HDS2102S which I had left from an other Siglent scope.
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This is one time that procrastinating looks like it worked out well to me. Of course now that the 2202s is out, I am slightly wishing I had that one simply for the rms measurement...
i've been on look out for ScopeMeter for years and i thought its time when i got HDS200 series into my radar... but i guess it will take forever to make a right choice. we cant be too lucky and we cant be too unlucky as well ::) life goes on..
Right. Everything is superseded the moment it is purchased. The best plan is to purchase, then stop looking or reading... :D
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but if there is hope to mod..
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but if there is hope to mod..
Everything can be modded! :)
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My HDS2102S also can do 500MSa/s with both channels active.
You shoudn't trust an Owon unit until you test it.
PS: start to read this forum thread at page 1. :P
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My HDS2102S also can do 500MSa/s with both channels active.
You shoudn't trust an Owon unit until you test it.
PS: start to read this forum thread at page 1. :P
Eh. My Owon is my at home toy when I want a basic scope. Anything I do that needs a real scope I do at work on much nicer scopes. And I read this thread from page 1 before I bought my Owon. 😉
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Can I use a 100 MHz probe with a 70 MHz HDS272S?
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Can I use a 100 MHz probe with a 70 MHz HDS272S?
Yes, probe with BW of 70MHz or more will do and will not limit performance of a scope.
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Can I use the OWON OC5010 AC/DC current probe together with the HDS272S?
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Can I use the OWON OC5010 AC/DC current probe together with the HDS272S?
yes you can use it.. even if different brand such as Hantek CC-65 AC/DC current probe, which is much cheaper, you can use.
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Can I use the OWON OC5010 AC/DC current probe together with the HDS272S?
yes you can use it.. even if different brand such as Hantek CC-65 AC/DC current probe, which is much cheaper, you can use.
Well thank you. That's what I wanted to hear.
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Will this BCP reduction fit for Hantek CC-65 AC/DC?
https://th.aliexpress.com/item/1005004961450032.html?spm=a2g0o.productlist.0.0.70141bd947cSjP
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it is for multimeter
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How to find out the firmware version?
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System button.. and then page down (F4) until you find somwthing like "Info" and press F? below it...
https://files.owon.com.cn/probook/HDS200_series_user_manual.pdf
https://files.owon.com.cn/probook/HDS200_Series_Oscilloscope_Quick_Guide.pdf
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Thank you, I am already. My HDS272S version is V8.0.0
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Thank you, I am already. My HDS272S version is V8.0.0
Do you have voltage drift in oscilloscope ("mean" option) when the case heats up inside?
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hi to all. I got my HDS242 (pollin) today with fw V8.0.1.
after 5 min I lost a lot of trust in this tool.
The Software seems to be buggy here and there on basics.
The Vmin, Vmax Values (in OSC eg: DC Mode, 1x, probe to a AAA Batterie) are not refreshed / calculated,
if the time setting is >= 100ms/div. The displayed values are jumping to old measured values (made previously with <100ms/div) , when changing the time between settings >=100ms/div., The current measured Voltage V seems to be filtered and is extremly slow.
Do you noticed that in previous firmware ?
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hi to all. I got my HDS242 (pollin) today with fw V8.0.1.
after 5 min I lost a lot of trust in this tool.
The Software seems to be buggy here and there on basics.
The Vmin, Vmax Values (in OSC eg: DC Mode, 1x, probe to a AAA Batterie) are not refreshed / calculated,
if the time setting is >= 100ms/div. The displayed values are jumping to old measured values (made previously with <100ms/div) , when changing the time between settings >=100ms/div., The current measured Voltage V seems to be filtered and is extremly slow.
Do you noticed that in previous firmware ?
Hello there,
I just got one also about a week or two ago and have been using it almost daily on different things.
I was using it to analyze an automobile engine and battery. You can get a lot of information from looking across the battery not just the voltage or the charge voltage but also some mechanical info just from how the battery voltage changes.
I've also been using it on some microcontroller circuits to check timings and stuff like that.
It's good for general stuff but i dont think we can call it a "professional" scope it's more of a hobby scope unless you dont have to do things a more expensive scope can do.
One thing i miss is the RMS readings as this scope does not display any RMS value of the waveforms. I have a cheaper USB scope that shows that as well as FFT which this scope also does not have.
Luckily it has A-B and invert, which is often important when looking at two waveforms at the same time.
So overall i am looking at signals around 12 volts that can vary by about 100mv and also at digital logic signals from about 0v to about 4.6 volts and mainly just need to verify the timings and just make sure everything is working as expected.
For working with the car battery, i used a low pass filter to filter out some of the noise in the signal which made it easier to read.
I tested the bandwidth and it showed to be 24MHz not 40MHz. I suspected it would be lower, and after all it's just around $120 USD or so depending on where you buy it. I think it is worth that price, but of course i would want a better one even if i had to pay a little more.
The best thing is that the prices of the digital scopes have come down a lot in recent years. Back in the day the cheapest scope i could get was a CRT type and it was much, much larger and the price was $400 USD, and bandwidth only 20Mhz.
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I second that. This is great for a cheap hobby scope. Definitely not something I would use professionally.
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I have one of these little scopes- 242S, I love it. Mine is about a year old, a little after they came out. My SW is v3.21. Its pretty solid in my experience- I've tried to find bugs but I don't think I really have yet. The RMS reading stuff is a small issue, as long as you know about it. I mainly wanted a reasonably fast little scope that is completely isolated from ground- this is great for this. I can look at 200V peak high side FET driver signals with my scope ground tied anywhere that makes sense. I have a lot of other equipment but often, especially when servicing stuff- I like having something that is indestructible first order and wouldn't be a shame if I dorked it vs. my $10k Tek scope. I don't run this at 100 mS/div, that's awfully slow. Don't forget that once triggered, it will take a full second for that sweep to run. I'll give it a try and see if I can recreate your issue. Perfection is the enemy of very, very good especially on a budget device- these kind of things are amazing.. All my equipment has some sort of limitations- this one more than others but its an great tool for what it is and what it costs- once I know what everything is doing, I can apply nicer equipment. I also use it mobile which its great for.
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One thing i miss is the RMS readings as this scope does not display any RMS value of the waveforms. I have a cheaper USB scope that shows that as well as FFT which this scope also does not have.
but USB scope we cant bring to our car, or outdoor field, can it? then its another problem for each device. if we need RMS, we use multimeter. its good to have all in one scope but what can we expect from budget limited device? imho the wisest thing to do is report the bug here and also send OWON a PM to inform them about the bug, and hope they will fix in another FW revision, ymmv.
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hi to all. I got my HDS242 (pollin) today with fw V8.0.1.
after 5 min I lost a lot of trust in this tool.
The Software seems to be buggy here and there on basics.
The Vmin, Vmax Values (in OSC eg: DC Mode, 1x, probe to a AAA Batterie) are not refreshed / calculated,
if the time setting is >= 100ms/div. The displayed values are jumping to old measured values (made previously with <100ms/div) , when changing the time between settings >=100ms/div., The current measured Voltage V seems to be filtered and is extremly slow.
Do you noticed that in previous firmware ?
I have hds242 (firmware 4.1.0). I checked for 0-3V DC (adjustable), x1, time: 200ms, 500ms, 1s, 2s. The data is refreshed almost instantly if a smaller or larger value appears on the oscillogram.
For me, the problem is the voltage drift (when the device warms up), which is 1.5 - 2V after 0.5h. Calibration makes sense only after 30 minutes of work (or more).
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thanks orb. so it is a new bug with V8.0.1 .
Next year, I will report that to pollin.de (seller) and to OWON.
Also time shift/scroll along x with >=100ms/div is not working.
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Also time shift/scroll along x with >=100ms/div is not working.
No problem here.
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I recently purchased the HDS2202S Model.
On the Owon website it states this model has RMS measurements, that is why I bought this model, but it is not on the scope, firmware is ver 1.0.0 , I have contacted Owon but so far no response.
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I have one of these little scopes- 242S, I love it. Mine is about a year old, a little after they came out. My SW is v3.21. Its pretty solid in my experience- I've tried to find bugs but I don't think I really have yet. The RMS reading stuff is a small issue, as long as you know about it. I mainly wanted a reasonably fast little scope that is completely isolated from ground- this is great for this. I can look at 200V peak high side FET driver signals with my scope ground tied anywhere that makes sense. I have a lot of other equipment but often, especially when servicing stuff- I like having something that is indestructible first order and wouldn't be a shame if I dorked it vs. my $10k Tek scope. I don't run this at 100 mS/div, that's awfully slow. Don't forget that once triggered, it will take a full second for that sweep to run. I'll give it a try and see if I can recreate your issue. Perfection is the enemy of very, very good especially on a budget device- these kind of things are amazing.. All my equipment has some sort of limitations- this one more than others but its an great tool for what it is and what it costs- once I know what everything is doing, I can apply nicer equipment. I also use it mobile which its great for.
Yes that's why i said in another post that if it works for you it works for you.
I have used it for several things already and when compared to the price i got a decent deal i guess.
I even run mine at 20 seconds per division (yes 20 seconds not 20ms). That's to check some slow changing signals.
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One thing i miss is the RMS readings as this scope does not display any RMS value of the waveforms. I have a cheaper USB scope that shows that as well as FFT which this scope also does not have.
but USB scope we cant bring to our car, or outdoor field, can it? then its another problem for each device. if we need RMS, we use multimeter. its good to have all in one scope but what can we expect from budget limited device? imho the wisest thing to do is report the bug here and also send OWON a PM to inform them about the bug, and hope they will fix in another FW revision, ymmv.
Well you can use a USB scope in the field if you have a Laptop computer. I have a laptop but it's a little bit of a pain to drag that out to the car with the scope and probes too. Have to be careful where you place it so it does not fall.
I've had some unusual problems with the USB scope i got long ago too, but it was even cheaper about $70. Bandwidth 15MHz although also advertised as higher.
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hi to all. I got my HDS242 (pollin) today with fw V8.0.1.
after 5 min I lost a lot of trust in this tool.
The Software seems to be buggy here and there on basics.
The Vmin, Vmax Values (in OSC eg: DC Mode, 1x, probe to a AAA Batterie) are not refreshed / calculated,
if the time setting is >= 100ms/div. The displayed values are jumping to old measured values (made previously with <100ms/div) , when changing the time between settings >=100ms/div., The current measured Voltage V seems to be filtered and is extremly slow.
Do you noticed that in previous firmware ?
I have hds242 (firmware 4.1.0). I checked for 0-3V DC (adjustable), x1, time: 200ms, 500ms, 1s, 2s. The data is refreshed almost instantly if a smaller or larger value appears on the oscillogram.
For me, the problem is the voltage drift (when the device warms up), which is 1.5 - 2V after 0.5h. Calibration makes sense only after 30 minutes of work (or more).
Oh that's interesting, mine doesnt seem to drift even after about 2 hours.
I also noticed mine does not have the calibrate function that i found in the manual. The menu space where that should be is blank.
Could it have been a minor upgrade?
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I recently purchased the HDS2202S Model.
On the Owon website it states this model has RMS measurements, that is why I bought this model, but it is not on the scope, firmware is ver 1.0.0 , I have contacted Owon but so far no response.
Oh sorry to hear about that, and to think i almost bought a more expensive model also.
I liked having RMS but as the other member said it's not the end of the world either, just the end of the year 2022 (ha ha).
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hi to all. I got my HDS242 (pollin) today with fw V8.0.1.
after 5 min I lost a lot of trust in this tool.
The Software seems to be buggy here and there on basics.
The Vmin, Vmax Values (in OSC eg: DC Mode, 1x, probe to a AAA Batterie) are not refreshed / calculated,
if the time setting is >= 100ms/div. The displayed values are jumping to old measured values (made previously with <100ms/div) , when changing the time between settings >=100ms/div., The current measured Voltage V seems to be filtered and is extremly slow.
Do you noticed that in previous firmware ?
I have hds242 (firmware 4.1.0). I checked for 0-3V DC (adjustable), x1, time: 200ms, 500ms, 1s, 2s. The data is refreshed almost instantly if a smaller or larger value appears on the oscillogram.
For me, the problem is the voltage drift (when the device warms up), which is 1.5 - 2V after 0.5h. Calibration makes sense only after 30 minutes of work (or more).
Oh that's interesting, mine doesnt seem to drift even after about 2 hours.
I also noticed mine does not have the calibrate function that i found in the manual. The menu space where that should be is blank.
Could it have been a minor upgrade?
Do you have hds242? Which version of hw&fw?
It looks like this on mine owon.
(http://i.imgur.com/fqPUHhpl.jpg) (https://imgur.com/fqPUHhp)
Here is a "log" from the voltage drift (voltages taken from the "mean" indicator; probe & usb disconnected). An oscillogram (flat line) also "wanders" about the x-axis.
@RogerG has a similar issue in his hds242 (hw: 2.1, fw: 7.2.0).
1. Calibration after 1h of working (external temp ~22*C)
2. Power off & rest: about 3h to "cool down"
3. Power on & test (@~22*C), full batt, lcd brightness 50%
Not exact values, more like "average".
V/T : cold! / 20min / 30min / 45min / 60min
-------------------------------------------
100V : 2.8V / 1.8V / 900mV / 700mV / 400mV
50V : 4.2V / 2.1V / 1.7V / 1.2V / 1V
20V : 813mV / 230mV / 5mV!! / -200mV/ -450mV
10V : 1.52V / 350mV / 170mV / -3mV / -200mV
5V : 1.51V / 230mV / 165mV / 1mV / -180mV
2V : 120mV / 100mV / 80mV / 77mV / 70mV
1V : 80mV / 50mV / 41mV / 26mV / 26mV
0.5V : 48mV / 28mV / 10mV / -4mV / -5mV
0.2V : 35mV / 15mV / 7mV / -1mV / -4mV
0.1V : 32mV / 10mV / 6mV / 1mV / 2mV
Here is more info (with pics) about voltage drift in my hds242:
https://www.eevblog.com/forum/testgear/owon-hds242-line-voltage-measurement-or-not/msg4613893/#msg4613893 (https://www.eevblog.com/forum/testgear/owon-hds242-line-voltage-measurement-or-not/msg4613893/#msg4613893)
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Hello. Do you recommend buying the OWON HDS272? I am fond of electronics, I dedicate myself to repairing low power UPS and one or another domestic appliance.I want something portable
Thanks
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hi to all. I got my HDS242 (pollin) today with fw V8.0.1.
after 5 min I lost a lot of trust in this tool.
The Software seems to be buggy here and there on basics.
The Vmin, Vmax Values (in OSC eg: DC Mode, 1x, probe to a AAA Batterie) are not refreshed / calculated,
if the time setting is >= 100ms/div. The displayed values are jumping to old measured values (made previously with <100ms/div) , when changing the time between settings >=100ms/div., The current measured Voltage V seems to be filtered and is extremly slow.
Do you noticed that in previous firmware ?
I have hds242 (firmware 4.1.0). I checked for 0-3V DC (adjustable), x1, time: 200ms, 500ms, 1s, 2s. The data is refreshed almost instantly if a smaller or larger value appears on the oscillogram.
For me, the problem is the voltage drift (when the device warms up), which is 1.5 - 2V after 0.5h. Calibration makes sense only after 30 minutes of work (or more).
Oh that's interesting, mine doesnt seem to drift even after about 2 hours.
I also noticed mine does not have the calibrate function that i found in the manual. The menu space where that should be is blank.
Could it have been a minor upgrade?
Do you have hds242? Which version of hw&fw?
It looks like this on mine owon.
(http://i.imgur.com/fqPUHhpl.jpg) (https://imgur.com/fqPUHhp)
Here is a "log" from the voltage drift (voltages taken from the "mean" indicator; probe & usb disconnected). An oscillogram (flat line) also "wanders" about the x-axis.
@RogerG has a similar issue in his hds242 (hw: 2.1, fw: 7.2.0).
1. Calibration after 1h of working (external temp ~22*C)
2. Power off & rest: about 3h to "cool down"
3. Power on & test (@~22*C), full batt, lcd brightness 50%
Not exact values, more like "average".
V/T : cold! / 20min / 30min / 45min / 60min
-------------------------------------------
100V : 2.8V / 1.8V / 900mV / 700mV / 400mV
50V : 4.2V / 2.1V / 1.7V / 1.2V / 1V
20V : 813mV / 230mV / 5mV!! / -200mV/ -450mV
10V : 1.52V / 350mV / 170mV / -3mV / -200mV
5V : 1.51V / 230mV / 165mV / 1mV / -180mV
2V : 120mV / 100mV / 80mV / 77mV / 70mV
1V : 80mV / 50mV / 41mV / 26mV / 26mV
0.5V : 48mV / 28mV / 10mV / -4mV / -5mV
0.2V : 35mV / 15mV / 7mV / -1mV / -4mV
0.1V : 32mV / 10mV / 6mV / 1mV / 2mV
Here is more info (with pics) about voltage drift in my hds242:
https://www.eevblog.com/forum/testgear/owon-hds242-line-voltage-measurement-or-not/msg4613893/#msg4613893 (https://www.eevblog.com/forum/testgear/owon-hds242-line-voltage-measurement-or-not/msg4613893/#msg4613893)
Hello,
That's funny i dont see a hardware version just software. Version V8.0.1
Where did you find out your hardware version?
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Hello. Do you recommend buying the OWON HDS272? I am fond of electronics, I dedicate myself to repairing low power UPS and one or another domestic appliance.I want something portable
Thanks
That seems to be very hard to say there seems to be many different versions out there not sure which one you would get.
Whatever you buy, make sure you can return it without too much trouble.
Are you sure you need high bandwidth?
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I think not, but I don't have many options, I live in Peru, then there are the most expensive equipment but they are from banks. They cost three or four times as much.
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Where did you find out your hardware version?
It's on the pcb, take a look: http://www.kerrywong.com/2021/09/18/teardown-of-an-owon-hds272s-3-in-1-handheld-oscilloscope-dmm-awg-compared-with-hantek-2d72/ (http://www.kerrywong.com/2021/09/18/teardown-of-an-owon-hds272s-3-in-1-handheld-oscilloscope-dmm-awg-compared-with-hantek-2d72/)
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I think not, but I don't have many options, I live in Peru, then there are the most expensive equipment but they are from banks. They cost three or four times as much.
Oh sorry to hear that.
Then maybe you will be happy with whatever you can get ahold of. My first scope many, many, many, years ago was a huge thing with a round CRT screen (ha ha) and it had NO DC COUPLING ha ha. That was nuts. I had to make my own chopper so i could get zero volts and the voltage of whatever i was measuring on the same screen, albeit in dashes instead of a straight line (for DC). Bandwidth was probably 5MHz.
But it was all i could get at the time, too young to drive so could not go to any store to buy one. So i was more or less happy with it.
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Where did you find out your hardware version?
It's on the pcb, take a look: http://www.kerrywong.com/2021/09/18/teardown-of-an-owon-hds272s-3-in-1-handheld-oscilloscope-dmm-awg-compared-with-hantek-2d72/ (http://www.kerrywong.com/2021/09/18/teardown-of-an-owon-hds272s-3-in-1-handheld-oscilloscope-dmm-awg-compared-with-hantek-2d72/)
Oh i see, thanks. Can you see the HW number by taking the battery cover off? I am not sure i want to take the entire meter apart just yet, it's still new.
I checked the DC drift, it seems to be stable.
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Can you see the HW number by taking the battery cover off?
Idk, I have returned my hds242 back on guarantee. Voltage drift was pretty annoying. It was a "neverending story" of the calibration process.
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Can you see the HW number by taking the battery cover off?
Idk, I have returned my hds242 back on guarantee. Voltage drift was pretty annoying. It was a "neverending story" of the calibration process.
Oh sorry to hear that. Can you say where you bought it?
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I bought it from the local dealer in my country, with his warranty seal.
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Recently bought an HDS2102S. S/N is 22520073 and F/W is V4.1.0.
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I bought it from the local dealer in my country, with his warranty seal.
Hi,
Oh ok, well i suspect then that you got a unit that was sitting around for some time before it was sold and the firmware was never upgraded. I was wondering if you upgraded the firmware would it have worked better.
This brings up the question of how do you recommend a scope that may be the very same model but has different firmware. If they get an old unit it may not be very good, but if they get a newer unit it may work acceptably well.
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Recently bought an HDS2102S. S/N is 22520073 and F/W is V4.1.0.
Hi,
Maybe you could check and see if you have that serious drift issue with yours. If so, maybe look into upgrading the firmware if that is possible.
See if you can find "calibration" on any of the menus.
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I bought it from the local dealer in my country, with his warranty seal.
Hi,
Oh ok, well i suspect then that you got a unit that was sitting around for some time before it was sold and the firmware was never upgraded. I was wondering if you upgraded the firmware would it have worked better.
This brings up the question of how do you recommend a scope that may be the very same model but has different firmware. If they get an old unit it may not be very good, but if they get a newer unit it may work acceptably well.
You're right, however the voltage drift seems to be related more to the hardware. The firmware update may fail (in the worst case = brick), then the service could say that "I broke the device". They know what firmware version is installed on the hds242 they sell.
By asking, I'm trying to determine if more devices have the same problem. So far I've found out that two hds242 units (hw:v2.1 & fw:v7.2.0) also have a problem with significant voltage drift while warming up. It was mentioned by @RogerG, we spoke via pm.
In conclusion: "we have" three hds242 & one hds272s with this issue. Three of them have hw: v2.1 (mine hw version has a status: "unknown").
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@orb:
Sad to read that...
Did you ask for a complete refund or a replacement?
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This is my unit with the latest v8 software
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@RogerG
I asked for a replacement, because it is useful tool for me.
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@orb
Ok, then I'm curios about the DC drift at the replaced device :-+
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Ok, I'll let you know what next.
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This is my unit with the latest v8 software
Try to calibrate it after 1h of working, then turn it off & "cool down" for about 3-4h, then power on, press "auto" button. Show us scale "10V/div; 1 ms/div", and the values: mean/min/max (of course for DC).
Turn off the flash, please. :)
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Hi all.
It seems I have to update "the bugs list". >:D
I checked @funky303 and @orb posts... and Voilà! ... video incoming.
I wonder if Owon is opened to update the firmware for older units too.
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https://youtu.be/sPwjugw7fac
CH1 short to ground...
it is more like a random generator. you can shift y, until your preferred voltage is shown.
Min,Max is strange too.
offset is just the bug indicator, the problem is more fundamental in the software. (v8.0.1)
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If you observe any bug: please add in your comment time marker (video position).
Video (no sound):
00:00 -> 02:05 device reset: default & autocalibration
02:05 -> 09:20 tests with channel 1 set to GND and channel 2 OFF.
09:20 -> 14:10 tests using channel 1 set to AC using SG (sine/10MHz/4Vpp).
14:10 -> 17:48 a few other tests.
Video Link (https://drive.google.com/file/d/1wFjIHllXn3DJ4th0pm7aoG1e42xJLePA/view?usp=sharing)
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I agree with you. Of course, sorry.
Constant 0 V is expected in V with a short-circuited input. Regardless of the vert. shift. However, V is not constant and varies with Y displacement. With this behavior, you don't have to worry about temperature-dependent offsets.
I thought a time marker was unnecessary because it affects the whole video.
Attempting an explanation:
If the acuracy related to the y-axis in the display area is 8 bits, then we have 10V/div x 8 div = 80V. And 80V / 256 = 0.3125V as quatization. With +1Lsb Toggle (due to bad calibration), Vmean can of course now wobble between 0...0.3125V on average (calculated as a float). As observed.... But then Vmin = 0 and Vmax = 0.3125V would need to be. But it is not.
Maybe someone has an explanation and it's not a bug but an unqualified expectation on my part...
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If you observe any bug: please add in your comment time marker (video position).
Hi. Could you please put this video on the yt? I am not able to download 2GB video on my mobile network.
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Hi. Could you please put this video on the yt?
Video is posted on google drive - all options and speed are like on youtube.
The difference: is not publicly available unless you have the link.
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Video is posted on google drive - all options and speed are like on youtube.
Ok, it works, thanks. I rarely use gdrive for videos, so I forgot some features. :P
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@orb
Ok, then I'm curios about the DC drift at the replaced device :-+
Finally I got a refund, because they don't have hds242 for a replacement.
I found another store. I don't know whether to buy hds242(s) again or maybe hds272(s)? Now I'm more skeptical about these devices, but I need something portable.
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Since the sample rate of 242 and 272 are identical, I can't see any advantage of the 272.
The function generator is rather limited in its output level, you gave to decide if it's sufficient for you.
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Since the sample rate of 242 and 272 are identical, I can't see any advantage of the 272.
The function generator is rather limited in its output level, you gave to decide if it's sufficient for you.
Hi,
Doesnt the 272 have higher bandwidth? I thought the 242 was said to be 40MHz and the 272 was said to be 70MHz.
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Sample rate <> bandwidth
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@RogerG
You are right about what you wrote. I'm just wondering if maybe the build quality in the higher models is a bit better. Although the video on youtube showed that even the hds272 has a problem with voltage drift.
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In my opinion it may have to do with the 25% overclocked a/d converter. So the 2102 with its doubled sample rate is IMHO the first candidate for a - maybe - better build quality. Not the 272.
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Sample rate <> bandwidth
Hi there,
Are you trying to say that sample rate is not equal to bandwidth?
I dont think anyone said it was did they?
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Thoughts on using this for automotive?
Maybe a lesser model?
I want something "good enough" to check DRL circuits and robust enough it could withstand a drop or two inside the engine bay.
I don't want to drag an expensive mains powered scope over to struggle and then damage it.
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Sample rate <> bandwidth
Hi there,
Are you trying to say that sample rate is not equal to bandwidth?
I dont think anyone said it was did they?
I tried to say that you don't have an real advantage on buying the 272 because its sample rate is equal to the 242. And this sample rate is just hardly enough to cover 40MHz. This can be seen when looking on more demanding waveforms than sinus. With a 70MHz sinus wave even the 242 doesn't struggle when using proper probes.
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Thoughts on using this for automotive?
Maybe a lesser model?
I want something "good enough" to check DRL circuits and robust enough it could withstand a drop or two inside the engine bay.
I don't want to drag an expensive mains powered scope over to struggle and then damage it.
This scope will be capable of testing sensor waveforms including canbus
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I have an OWON HDS242 running firmware version 8.0.1. Recently while measuring the output of a 3V3 LDO I noticed the displayed readout value started intermittently blanking.
When the meter registers a 3.338 V input, it freaks out, with the display cycles between displaying a range of 20V and 200 mA.
In DCV mode, when the meter reads 0.8295V, the display range mode cycles between 2V and 750V. Bizarre! The meter doesn’t even have a user settable 750V range as far as I am aware. (I guess there is a giant code base inside, perhaps that’s related to another owon product.)
I don’t know if the glitch is triggered based on the multimeter chipset’s ADC code or the final calibrated display readout value. So, if the issue based on the raw ADC code value other meters may trigger at the exact same input values but with in some margin (no idea).
I haven’t looked for every possible DCV input value where it occurs but it has thus far been repeatable and precisely defined for 0.8295V & 3.338V , so I don’t know…
Has anyone else experienced something similar using the DMM input in DCV mode?
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I have an OWON HDS242 running firmware version 8.0.1. Recently while measuring the output of a 3V3 LDO I noticed the displayed readout value started intermittently blanking.
When the meter registers a 3.338 V input, it freaks out, with the display cycles between displaying a range of 20V and 200 mA.
In DCV mode, when the meter reads 0.8295V, the display range mode cycles between 2V and 750V. Bizarre! The meter doesn’t even have a user settable 750V range as far as I am aware. (I guess there is a giant code base inside, perhaps that’s related to another owon product.)
I don’t know if the glitch is triggered based on the multimeter chipset’s ADC code or the final calibrated display readout value. So, if the issue based on the raw ADC code value other meters may trigger at the exact same input values but with in some margin (no idea).
I haven’t looked for every possible DCV input value where it occurs but it has thus far been repeatable and precisely defined for 0.8295V & 3.338V , so I don’t know…
Has anyone else experienced something similar using the DMM input in DCV mode?
Hi,
I can check mine for this issue, probably tomorrow sometime.
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yes Scottie...
Video 1: DC 0.8295V @ 0:03, 0:10
-display: no value, only unit, range toggles to manual 750V
Video 2: DC 1.9V @ 0:02.
-display in slow motion: 01.905 > 01.902 > 0.1902 > 0.0000 > 1.8818
Video 3: DC 3.3338V @ 0:06, 0:12
-display: no value, only unit , range Auto toggles to 200mA :-)
video 1: https://youtu.be/xyMOSaZzW-I
video 2: https://youtu.be/mBMdQJZUshM
video 3: https://youtu.be/iKFCh6nLZyQ
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yes Scottie...
Video 1: DC 0.8295V @ 0:03, 0:10
-display: no value, only unit, range toggles to manual 750V
Video 2: DC 1.9V @ 0:02.
-display in slow motion: 01.905 > 01.902 > 0.1902 > 0.0000 > 1.8818
Video 3: DC 3.3338V @ 0:06, 0:12
-display: no value, only unit , range Auto toggles to 200mA :-)
Funky303, thank you so much for testing it out on your own HDS242.
I find this behavior so bizarre, I can’t deduce what could be causing the meter to glitch at such precisely defined inputs..
Interesting that you have discovered another magic input value neat 1.9V. After taking a look a your video it might be that the meter is auto range switching from 20V to 2V near 1.9V. But it does illustrate one of the other downsides of the meter in that it reports a few intermediate samples before the final near steady state value.
A bit of a disappointment, though I still really like the form factor and the display. And having a portable handheld scope is just wonderful.
Fingers crossed it could be a simple firmware fix :)
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yes Scottie...
Video 1: DC 0.8295V @ 0:03, 0:10
-display: no value, only unit, range toggles to manual 750V
Video 2: DC 1.9V @ 0:02.
-display in slow motion: 01.905 > 01.902 > 0.1902 > 0.0000 > 1.8818
Video 3: DC 3.3338V @ 0:06, 0:12
-display: no value, only unit , range Auto toggles to 200mA :-)
My brand new HDS2202 (V 1.2.0) does exactly the same at all three voltages. :(
Obviously the same MM section in all devices - or the same software fault?
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HDS272S, V3.3.3, S2128xxx
Same erroneous behaviour...
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Same here, 242 with FW 7.2.0
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The meter doesn’t even have a user settable 750V range as far as I am aware.
Correcting myself, In ACV mode the top end range of the DMM is 750V.
I still find this behavior so strange that is so precisely defined.
I will try probing the TX optocoupler this weekend to see if anything obvious stands out.
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HDS2102S V3.0.1 the multimeter works correctly.
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Guys, for the HDS242S version are we still stopped on FW.5.7.1? From Link https://www.owon.com.hk (https://www.owon.com.hk) brings as the last fw. 6.1.0 but during the upgrade I have always been error for me ... there are other official links where i can find updates and if yes, it is better that I stay with version 5.7.1 given all the problems I am reading around? Are these updates only for Board equal to or higher than version 3.02? Thnks...
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https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS242(S)&SortTag=Latest%20Firmware (https://www.owon.com.hk/download.asp?category=Digital%20Oscilloscope&series=HDS200%20Series&model=HDS242(S)&SortTag=Latest%20Firmware)
V6.0.0 can be upgraded to 6.1.0, but not yours. It depends on the hardware.
Don't play around too much with flashing unsupported firmware, because it may brick your device.
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Can I update HDS2102S SN2210399 with firmware v1.5.1 to v2.0.4 ?
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As far as I know (oficially) you can't go above your current base version: V1.5.1.
V2.0.4 is for the tool which has stock firmware V2.X.X on the board.
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Since the sample rate of 242 and 272 are identical, I can't see any advantage of the 272.
What can you say about this parameter? 8 vs 5 ns, it's about 60% of difference.
(http://i.imgur.com/VCTjzixl.jpg) (https://imgur.com/VCTjzix)
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The rise time is not the limit. @Old-Papa in the german Mikrocontroller board did some measurement here. HDS 242 as mine.
https://www.mikrocontroller.net/topic/542385#7268144 (https://www.mikrocontroller.net/topic/542385#7268144)
I also did some measurement a few minutes ago, see the attached pic.
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Ok, I see, rise time is about the same (3.2 - 3.5 ns) for both measurements: ~3.2V & 1 Mhz (yours), ~0.8V & 10 Mhz (old-papa). Thanks.
I am still a little curious about what it looks like on the hds272.
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I think the only advantage of the 272 over the 242 is that the frequency counter still works above 47MHz, where the 242 begins to show zero 8).
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I think the only advantage of the 272 over the 242 is that the frequency counter still works above 47MHz, where the 242 begins to show zero 8).
Only that for 44€ more? ;D
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The sample rate is hardly sufficient for 40MHz, so what :-DD ?
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Hi, just for your information.
I had informed OWON about some bugs.
Today I surprisingly got a patch for testing by mail. :)
It is a V8.1.0
At the weekend I will test the Issues.
After that I will ask them when this will be released or if it is allowed to distribute it here.
I had communicated that:
HDS242
SN: 224xxxxx
FW: V8.0.1 (The firmware 8.0.1 is not downloadable)
HW: V3.2
1: Oscilloscope: IF timebases >= 100ms (HOR M:>=100ms):
- and trigger = "AUTO", then the indicators (Vmax,Vmin;V...) do not work.
- "Vmin", "Vmax" are =0 or old values determined at <100ms / Div (HOR M:<100ms).
- Indicator "V" is extremely low-pass filtered.
2: Oscilloscope: The refresh time for triggers with large time bases (e.G. >500ms/div) appears very high.
The graph should be able to immediately and continuously map the current sample memory during each trigger event.
- Example: 1kHz int. generator with M:1.0s (1s/div) & PeakDetect & "trigger norm" measured. The update takes many seconds. If input signal is disconnected (= 0), and "force Trigger" is pressed to clear the screen, then it also takes a long time until a correct display occurs.
3: Oscilloscope: Sometimes the unit boots in update mode and loses all settings (starts in Language Setting Chinese). The behaviour is not reproducible and occurs sporadically.
4: DMM: some special (exactly these) voltages are not measurable:
Video 1: DC 0.8295V @ 0:03, 0:10
-display: no value, only unit, range toggles to manual 750V
Video 2: DC 1.9V @ 0:02.
-display in slow motion: 01.905 > 01.902 > 0.1902 > 0.0000 > 1.8818
Video 3: DC 3.3338V @ 0:06, 0:12
-display: no value, only unit , range Auto toggles to 200mA :-)
video 1: https://youtu.be/xyMOSaZzW-I
video 2: https://youtu.be/mBMdQJZUshM
video 3: https://youtu.be/iKFCh6nLZyQ
users in forums report this issue for different models eg.
me: hds242 v8.0.1
others: HDS272S, V3.3.3, S2128xxx; HDS2202 (V 1.2.0)
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1: Oscilloscope: IF timebases >= 100ms (HOR M:>=100ms):
- and trigger = "AUTO", then the indicators (Vmax,Vmin;V...) do not work.
- "Vmin", "Vmax" are =0 or old values determined at <100ms / Div (HOR M:<100ms).
- Indicator "V" is extremely low-pass filtered.
Hi. I have new scope with new firmware and... new issues. ;)
I bought hds2102s (fw: V3.0.0), it has less voltage drift (<=4%) than hds242 (fw: V4.1.0), but the "min/max/vpp" values behave similar to your scopemeter.
For 5/50 ms "min" doesn't work properly ("max" works). Above 50 ms "min/max/vpp" do not work at all, values are not refreshed.
Here's Johnny!
(http://i.imgur.com/fk1rgXam.jpg) (https://imgur.com/fk1rgXa)
(http://i.imgur.com/AEbDLWgm.jpg) (https://imgur.com/AEbDLWg)
And... here is "the bug":
(http://i.imgur.com/lr4ZkCzm.jpg) (https://imgur.com/lr4ZkCz)
I hope that these "anti confusion caps" will work. ;D
(http://i.imgur.com/Hhfppv9m.jpg) (https://imgur.com/Hhfppv9)
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Searching an array for min and max seems to be more difficult than expected... ??? so no good news yet.
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HDS2102S V3.0.1 the multimeter works correctly.
Do you have this issue on V3.0.1?: https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4679332/#msg4679332 (https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/msg4679332/#msg4679332)
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Yes there is.
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There is no synchronization in ROLL mode, so Vmax and Vmin measurements do not work.Turn on standby mode and everything will work.
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There is no synchronization in ROLL mode, so Vmax and Vmin measurements do not work.Turn on standby mode and everything will work.
I know, but the funny thing is that this option worked fine on hds242 (fw: v4.1.0). They have messed this up in newer firmware versions, which is even mentioned by funky303 (hds242 & fw: v8.1.0). ;)
Btw. I wrote a simple script to batch resize small screenshots (.bmp -> .png) without blurring (only for linux users). It requires imagemagick (mogrify).
#!/usr/bin/env bash
[[ $1 =~ ^[1-9][0-9]*$ ]] && find . -type f -iname "*.bmp" -exec mogrify -format png -sample "${1}%" "{}" \; || echo -e "Usage: `basename $0` [resize value in percent]\n\nPercent value must be an integer and greater than 0!\n\nExample: `basename $0` 500"
Here is the result.
Original size:
(http://i.imgur.com/qzf2jeC.png) (https://imgur.com/qzf2jeC)
Resized (300%):
(http://i.imgur.com/iHO9k6c.png) (https://imgur.com/iHO9k6c)
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2: Oscilloscope: The refresh time for triggers with large time bases (e.G. >500ms/div) appears very high.
The graph should be able to immediately and continuously map the current sample memory during each trigger event.
- Example: 1kHz int. generator with M:1.0s (1s/div) & PeakDetect & "trigger norm" measured. The update takes many seconds. If input signal is disconnected (= 0), and "force Trigger" is pressed to clear the screen, then it also takes a long time until a correct display occurs.
In my hds2102s (fw: v3.0.0; hw: v1.1) I noticed this dependency:
(http://i.imgur.com/V6PcaFol.png) (https://imgur.com/V6PcaFo) (http://i.imgur.com/OmDDduil.png) (https://imgur.com/OmDDdui)
In the "normal" trigger mode, there is always a "16 * x s/div" multiplier for the time, after this the waveform is displayed/refreshed. At first I thought that time was random, but it doesn't seem to be.
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Appears normal to me as after all, DSO acquisition does not follow CRO behaviour at 1s/div when a DSO is in Roll mode some of which display nothing until until the display buffer is full.
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Good to know, thanks. I wasn't sure. For me it also looks more like "programmed" than "random" behavior.
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My old Tek 2232 (a CRO with a digital storage option from the 80's) shows the same behavior in roll mode. At trigger, it starts to fill the buffer "from the right side". If the displayed part is not all the way to the right, you need to wait until the buffer fill reaches the displayed section.
The solution there is to move the displayed portion all the way to the right.
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Is it better to use protected batteries due to discharge (undercharging) in standby mode, or are these batteries protected by a circuit in the device?
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I don't know if it has discharge protection, I haven't checked.
In my hds2102s (hw:1.1, fw:3.0.0) battery management is weird. When charging, the scopemeter draws about 1.9A @ 5V from the charger, which is probably about 1A/cell @ 4.2V (battery capacity 2x2600 mAh.)
After fully charging, the battery indicator drops quite quickly during operation. However, after the "battery low" message appears, the scopemeter works for another 1.5h or more. After reboot, the indicator shows a much higher battery level than before the shutdown. After a while of work, it drops again.
From what I remember in hds242 (fw: 4.1.0) the discharge indicator was better calibrated. Scopemeter worked for about 4 hours, after that time the message "battery low" appeared, and after a few minutes the device turned off.
In the photos below, 2 channels and a generator were turned on. The battery status was low, but the scopemeter was not even going to turn off.
(http://i.imgur.com/JBTI0ECs.png) (https://imgur.com/JBTI0EC) (http://i.imgur.com/sZiX6Ycs.png) (https://imgur.com/sZiX6Yc) (http://i.imgur.com/cBa2twos.png) (https://imgur.com/cBa2two) (http://i.imgur.com/lWYCYfEs.png) (https://imgur.com/lWYCYfE)
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Is it better to use protected batteries due to discharge (undercharging) in standby mode, or are these batteries protected by a circuit in the device?
My HDS2102 with board HDS2xx2x version 1.0 dated 2022-03-30 uses a Shikues BRC3130ME chip for battery protection. Both batteries are jumpered in parallel so the one chip is protecting both batteries. According to that chip's datasheet it has overdischarge between 2.3 and 2.5v.
Mine also uses a SGM41521 IC for charging.
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Shikues BRC3130ME
Where can I find it on the mainboard? I found "SGM41521" only, but I've only photos at this moment. Mr. Chinese also left fingerprints on the metal cover. Maybe it's some kind of personal signature? ;)
(http://i.imgur.com/cBWNqE1s.jpg) (https://imgur.com/cBWNqE1)
I also got rid of the balls after soldering. There were several of them on both side of the motherboard.
(http://i.imgur.com/GMEoVDps.jpg) (https://imgur.com/GMEoVDp)
Back of the motherboard (the metal cover also has a "signature").
(http://i.imgur.com/Swe1yWes.jpg) (https://imgur.com/Swe1yWe) (http://i.imgur.com/TrdhxOxs.jpg) (https://imgur.com/TrdhxOx) (http://i.imgur.com/5HL8wW6s.jpg) (https://imgur.com/5HL8wW6) (http://i.imgur.com/1WxeBWjs.jpg) (https://imgur.com/1WxeBWj)
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Shikues BRC3130ME
Where can I find it on the mainboard? I found "SGM41521" only, but I've only photos at this moment. Mr. Chinese also left fingerprints on the metal cover. Maybe it's some kind of personal signature? ;)
(http://i.imgur.com/cBWNqE1s.jpg) (https://imgur.com/cBWNqE1)
I also got rid of the balls after soldering. There were several of them on both side of the motherboard.
(http://i.imgur.com/GMEoVDps.jpg) (https://imgur.com/GMEoVDp)
Back of the motherboard (the metal cover also has a "signature").
(http://i.imgur.com/Swe1yWes.jpg) (https://imgur.com/Swe1yWe) (http://i.imgur.com/TrdhxOxs.jpg) (https://imgur.com/TrdhxOx) (http://i.imgur.com/5HL8wW6s.jpg) (https://imgur.com/5HL8wW6) (http://i.imgur.com/1WxeBWjs.jpg) (https://imgur.com/1WxeBWj)
It's a small six pin surface mount chip near the battery solder pads. Look in-between the battery and the heat shield, near the sgm41521.
Interestingly on mine they populated one for each battery, then cut the tab for the second battery and jumpered the two batteries together. Looks like they might have done the same to yours
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Thanks. I think I have 2 chips, one partially covered with a white goo.
(http://i.imgur.com/FiBElWTl.jpg) (https://imgur.com/FiBElWT)
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Thanks. I think I have 2 chips, one partially covered with a white goo.
(http://i.imgur.com/FiBElWTl.jpg) (https://imgur.com/FiBElWT)
That looks correct. If you trace the chip covered with goop, I bet it's going to the unconnected pad for the second battery.
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I don't have better photos of this area.
(http://i.imgur.com/BtZaD1zs.jpg) (https://imgur.com/BtZaD1z) (http://i.imgur.com/SG14T3as.jpg) (https://imgur.com/SG14T3a)
Charging; USB meter: Keweisi KWS-MX18; capacity rated for ~5V.
(http://i.imgur.com/Wt5D3OOl.jpg) (https://imgur.com/Wt5D3OO)
Info from the manual.
(http://i.imgur.com/sLqJPnzl.jpg) (https://imgur.com/sLqJPnz)
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short update:
due to new bugs in test-fw-8.1.0,
I downgraded back to 8.0.1
They are working on new Version...
So there is some hope...
I will report back...
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blinking button to warn missing batteries is a preferable feature imho. to warn us to get batteries asap. operating without batteries could overload charging circuit, or not recommended because of various reasons.
It's also useful if the OWON has drained the batteries to the point where they'll no longer take a charge, which appears to be the case with my one, looks like the charging circuit isn't registering them as present.
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Is it better to use protected batteries due to discharge (undercharging) in standby mode, or are these batteries protected by a circuit in the device?
No protection AFAICT, the OWON discharged mine to the point where the charge circuitry won't register them as present any more so I get the red blinking light. Will try them on an MC3000 later to see if I can revive them, although given that they're probably no-name Chinese cells I'm not sure how much... well, Chinese roulette I want to play with them.
Update: I'd left it hooked up to a lab power supply that showed current drawn (because why put any kind of charging indicator on the scope?) and came back after a few hours and saw the current draw had gone from about 5mA to 1A, so at some point it must have decided to start charging. So now it's busy charging a NMC cells of dubious quality that have possibly been overdischarged...
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Another point unrelated to the batteries, like any number of other vendors OWON appears to have screwed up the USB-C power circuitry so if you try and charge it from a USB-C device it won't charge or even power up. You need to use a USB-A to USB-C cable to run it, not a USB-C to USB-C.
And as a general note on things with USB-C connectors that aren't laptops, tablets or cellphones, if you plug it into a USB-C cable and it won't power up, or crashes randomly, or whatever, try a USB-A to USB-C cable. The number of IoT devices I've got that have USB-C connectors but can't be powered from USB-C is crazy. Kudos to VisionFive for being one of the few vendors I can think of right now who actually got their USB-C power handling right.
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Is there any information yet about the ADC being used in the HDS2202(S), i.e. the 200MHz model? Is it the HMCAD1511 or the Chinese LS08D1500? Unfortunately, the only teardown (video) of an HDS2202 that I found so far doesn't show the ADC chip.
Edit: just noticed that konnor had shared photos of the ADC in an older post and that even the board seems to be the same as in the HDC2102 except for what looks to me like an unpopulated IDT 8V97051?
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Hello everyone
I want to introduce branded OWONA oscilloscopes.
(https://obrazki.elektroda.pl/4725195700_1678646307_thumb.jpg) (https://obrazki.elektroda.pl/4725195700_1678646307.png) (https://obrazki.elektroda.pl/8227157400_1678646550_thumb.jpg) (https://obrazki.elektroda.pl/8227157400_1678646550.png) (https://obrazki.elektroda.pl/5554405600_1678646557_thumb.jpg) (https://obrazki.elektroda.pl/5554405600_1678646557.png) (https://obrazki.elektroda.pl/9875624900_1678646575_thumb.jpg) (https://obrazki.elektroda.pl/9875624900_1678646575.png)
https://de.aliexpress.com/item/1005004637384948.html (https://de.aliexpress.com/item/1005004637384948.html)
(https://obrazki.elektroda.pl/7511919300_1678646492_thumb.jpg) (https://obrazki.elektroda.pl/7511919300_1678646492.png) (https://obrazki.elektroda.pl/8293918500_1678646588_thumb.jpg) (https://obrazki.elektroda.pl/8293918500_1678646588.png)
https://pl.farnell.com/multicomp-pro/mp720781/hand-held-oscilloscopes-lcd-40mhz/dp/3703264 (https://pl.farnell.com/multicomp-pro/mp720781/hand-held-oscilloscopes-lcd-40mhz/dp/3703264)
https://pl.farnell.com/multicomp-pro/mp720783/hand-held-oscilloscopes-lcd-70mhz/dp/3703267 (https://pl.farnell.com/multicomp-pro/mp720783/hand-held-oscilloscopes-lcd-70mhz/dp/3703267)
(https://obrazki.elektroda.pl/1579341600_1678646596_thumb.jpg) (https://obrazki.elektroda.pl/1579341600_1678646596.png) (https://obrazki.elektroda.pl/5269951800_1678646604_thumb.jpg) (https://obrazki.elektroda.pl/5269951800_1678646604.png)
https://www.conrad.com/p/voltcraft-dso-2072h-handheld-scope-meter-70-mhz-2-channel-250-msas-8-kp-8-bit-handheld-1-pcs-2380256 (https://www.conrad.com/p/voltcraft-dso-2072h-handheld-scope-meter-70-mhz-2-channel-250-msas-8-kp-8-bit-handheld-1-pcs-2380256)
(https://obrazki.elektroda.pl/4695341800_1678646612_thumb.jpg) (https://obrazki.elektroda.pl/4695341800_1678646612.png) (https://obrazki.elektroda.pl/4156602600_1678646626_thumb.jpg) (https://obrazki.elektroda.pl/4156602600_1678646626.png)
https://pl.aliexpress.com/item/1005004653306451.html (https://pl.aliexpress.com/item/1005004653306451.html)
One more question
Does the www.eevblog.com (http://www.eevblog.com) forum have a file server where you can post and link, for example, photos?
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Where to download pc software for owon 200 series for win11?
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short update:
due to new bugs in test-fw-8.1.0,
I downgraded back to 8.0.1
They are working on new Version...
So there is some hope...
I will report back...
Any news? More than a month ago, I sent a video showing similar problems to yours, but I haven't received any information if there will be new firmware for hds2102s v3.X.X.
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Nein, habe noch keine weitere Info von OWON erhalten.
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One more question
Does the www.eevblog.com (http://www.eevblog.com) forum have a file server where you can post and link, for example, photos?
Hi. You can add an attachment and then link to a larger image using the [img] tag. This is what forum members do.
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Purchased new HDS272S this past week. It came with V8.1.0
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https://owonna.com/products_owon_hds300_series_digital_oscilloscope
Has anyone bought the "new" model HDS307/310(S) and can say something about it? The main changes mentioned by the manufacturer are: 30 MHz generator (sine), 6 MHz (square) and RMS value in the oscilloscope. The price is higher than the HDS200 series.
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https://owonna.com/products_owon_hds300_series_digital_oscilloscope
Has anyone bought the "new" model HDS307/310(S) and can say something about it? The main changes mentioned by the manufacturer are: 30 MHz generator (sine), 6 MHz (square) and RMS value in the oscilloscope. The price is higher than the HDS200 series.
A simple measurement function from RMS to
hds 200 line doesn't have it, here comes this one from the hds 300 series with this more expensive function, my hds272s doesn't have it. :--
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Review of the HDS2202S by Kerry Wong: https://youtu.be/1UaankSg1YI
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Hello, I have a new HDS272 it works very well but I have detected that when it is stopped for a few days (or not) sometimes when it starts up a message appears
(white letters on a black background) of an error similar to something in the system image, I could not to be able to take a photo, after that error the oscilloscope
starts and everything works, what problem could it have?
I have sent an email to info@owon.com.cn but I don't know if someone will answer
Model : HDS272
SN : 2303XXXX
Ver : V8.1.0
Checksum : c1c4fd14
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I could not to be able to take a photo
So, make a video, and then take a screenshot from that.
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Hello, I have a new HDS272 it works very well but I have detected that when it is stopped for a few days (or not) sometimes when it starts up a message appears
(white letters on a black background) of an error similar to something in the system image, I could not to be able to take a photo, after that error the oscilloscope starts and everything works, what problem could it have?
I haven't checked it right now but I had a suspect earlier that this message appears the next boot after selecting firmware update in scope's menu, so if update was selected but no update file was present at next boot.
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Hello, I have a new HDS272 it works very well but I have detected that when it is stopped for a few days (or not) sometimes when it starts up a message appears
(white letters on a black background) of an error similar to something in the system image, I could not to be able to take a photo, after that error the oscilloscope starts and everything works, what problem could it have?
I haven't checked it right now but I had a suspect earlier that this message appears the next boot after selecting firmware update in scope's menu, so if update was selected but no update file was present at next boot.
interesting , it is possible since I was going through all the menus to learn them, I will do the test
thank you
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opinion
Which oscilloscope is better HDS272 or DSO2512G for PC and laptop motherboard repair?
I like the direct single button of the DSO2512G
thanks for the opinions
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opinion
Which oscilloscope is better HDS272 or DSO2512G for PC and laptop motherboard repair?
I like the direct single button of the DSO2512G
thanks for the opinions
Same question, but I would add audio repair etc.
HDS272 is 250 MSa/sec only. HDS2102S would be more like DSO2512G (500 MS and with a function generator) but it is twice the price of DSO.
No FFT in Owon - except its PC software is said to have that option (which was also said not to work).
Owon's own screen is ok (size and quality) and, thereafter, its PC software does not give much value to most users (remote screen update is very slow).
DSO has no PC software but it has an analog video out for an external monitor. The resolution is terrible but at least the screen update is fast.
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opinion
Which oscilloscope is better HDS272 or DSO2512G for PC and laptop motherboard repair?
I like the direct single button of the DSO2512G
thanks for the opinions
The thread reviewing the DSO2512G is not very kind. https://www.eevblog.com/forum/testgear/new-2ch-pocket-dsosg-sigpeak-dso2512g/msg4282615/#msg4282615 (https://www.eevblog.com/forum/testgear/new-2ch-pocket-dsosg-sigpeak-dso2512g/msg4282615/#msg4282615)
The HDS series works very well and clearly meets its specifications.
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opinion
Which oscilloscope is better HDS272 or DSO2512G for PC and laptop motherboard repair?
I like the direct single button of the DSO2512G
thanks for the opinions
The thread reviewing the DSO2512G is not very kind. https://www.eevblog.com/forum/testgear/new-2ch-pocket-dsosg-sigpeak-dso2512g/msg4282615/#msg4282615 (https://www.eevblog.com/forum/testgear/new-2ch-pocket-dsosg-sigpeak-dso2512g/msg4282615/#msg4282615)
The HDS series works very well and clearly meets its specifications.
very very interesting
thank you
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Hello guys, I bought 2102s, and it seems it got some issue with noise. I got about 120-160mV on 1V/div,
1,2v-1,6V on 10V/div and so on. Does anybody had similar issue with it? I contacted seller(bg), but they claim that manufacturer said that "small noise is no problem" :palm:
https://youtu.be/N5MOkVwMtk8
And by the way the internals in my unit are propably the same as higher 2202s model, because it seems the same comparing with teardown photos, and it has Linsi brand ADC.
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Hello guys, I bought 2102s, and it seems it got some issue with noise. I got about 120-160mV on 1V/div,
1,2v-1,6V on 10V/div and so on. Does anybody had similar issue with it? I contacted seller(bg), but they claim that manufacturer said that "small noise is no problem" :palm:
https://youtu.be/N5MOkVwMtk8
And by the way the internals in my unit are propably the same as higher 2202s model, because it seems the same comparing with teardown photos, and it has Linsi brand ADC.
In your video it appears that the BNC connections are not connected. What do you see if you attach the probe and short the probe to the ground clip?
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Aww, sorry. I forgot to put it in film, but there is literally no difference. Of course at first I thought the same, so shorted probe to ground and outcome is the same. On both channels exactly. Later on, I thought maybe my computer, or monitor, or something is transmitting noise so i powered down my whole place and closed myself in voltageless bathroom for autocalibration :-DD But still, no improvement. Even changed probes from my siglent, and others cheapo's but obviously no change. |O
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Aww, sorry. I forgot to put it in film, but there is literally no difference. Of course at first I thought the same, so shorted probe to ground and outcome is the same. On both channels exactly. Later on, I thought maybe my computer, or monitor, or something is transmitting noise so i powered down my whole place and closed myself in voltageless bathroom for autocalibration :-DD But still, no improvement. Even changed probes from my siglent, and others cheapo's but obviously no change. |O
I just tested my HDS2102s, and I have a consistent noise of 1.5%fs on all input ranges (ex. in the 1V/div range full scale is 8V and I see 120mv of noise). Looking at your video, when you zoom in on the last portion, the noise was recorded at the 20V scale, and zoomed in showed to be about +-0.500V. Doing the math, at the 20V range the full scale is 160V, which on an 8 bit scope results in 160/256=0.625V/count, or +-1 count of noise.
Doing the same math on the image in your post, the 1V/div range has 8V full scale which has 8/256=0.0315V per count. The noise is 0.2V which is 0.2/0.0315 = 6.349 counts of noise, or +-3 counts of noise.
Honestly seeing +-1 to +-3 counts of noise seems to be pretty good for a $200 scope.
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It was on 10V/div an it showed 1,6Vpp. Now when im doing the math the way You showed me, it results constantly 1/40 os the scale is noise so 256/40=6,4 counts off. And You say this is normal for those? For example I am measuring 9V battery on 2V/div(so 16V full scale), and I see 400mV of noise. Maybe I'm wrong, but I expected some more accuracy :( I watched some videos before buy, and seems there was perfectly stable line.
And btw, did You maybe chcecked your's hardware inside? They differ, and mine unit when boots up there is a progress bar(there is none in those I saw reviews), and it eats about 0,92A @4V. The software version is v4.1.0
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It was on 10V/div an it showed 1,6Vpp. Now when im doing the math the way You showed me, it results constantly 1/40 os the scale is noise so 256/40=6,4 counts off. And You say this is normal for those? For example I am measuring 9V battery on 2V/div(so 16V full scale), and I see 400mV of noise. Maybe I'm wrong, but I expected some more accuracy :( I watched some videos before buy, and seems there was perfectly stable line.
And btw, did You maybe chcecked your's hardware inside? They differ, and mine unit when boots up there is a progress bar(there is none in those I saw reviews), and it eats about 0,92A @4V. The software version is v4.1.0
My scope is firmware version 2.4.1 and has the progress bar when booting. I don't know which ADC chip it has.
I tested a 9 volt battery on mine using the 5v/div scale since the 2v/div maxes at +8v. I see the 0.6v of noise (again 1.5% of full scale or +-2 counts of noise) that you suggest in the measurements, but I also see a nice straight line on the graph. BUT if I wanted to see the ripple on the battery I would put the scope into AC coupled mode and use whatever range would most fill the screen with the signal. This means that I would be in a mV range to measure ripple NOT the 5v/div range.
Scopes in general are not precision measurement instruments. Scopes are great visualization tools that have gross measurement capabilities. In my experience zooming in on a frozen signal is always quite noisy on a scope even the nice tek scopes I use at work.
Could you post an image of your scope measuring a 9v in the 5v/div range?
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You're right. In 10mV/div it shows almost nothing. Maybe I have some bias from using better siglent scope(not for long, I got it last december), and I have not been using many models. I attached some pics, in 2V/div I pushed vertical position -3V so it is visible on screen.
Interestingly about the software, it seems there are couple of batches for 2102s. From 1.5, 2.4, 3something, to 4.1
and there is none available for download for 2202s, so maybe, just maybe, some of them are just software downgraded and there is possibility for upgrade :)
And from another bottle, the battery issue some of users descibed, is also present in mine unit, but let's say it is no big deal, just little annoying. Some said that this is scaled well, but from my measurements, when scope screams low battery, there is still at least half of juice in them. Ignoring this message it can work for long long time still.
So it shows a full battery bar until it drops to 3,98V.
Another step(like 2/3) is below 3,89V.
Another(half) is at 3,81V which is quite right.
And it shows almost empty with little red bar, and low battery message at 3,69V when battery is still about half full. It might be 40-60% depending by cell chemistry, but definitely not low ;)
In the end little red bar disappears at 3,57V and battery bar seems fully depleted.
and it powers down at 3,43V. So the scaling could be better definitely.
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You're right. In 10mV/div it shows almost nothing. Maybe I have some bias from using better siglent scope(not for long, I got it last december), and I have not been using many models. I attached some pics, in 2V/div I pushed vertical position -3V so it is visible on screen.
Interestingly about the software, it seems there are couple of batches for 2102s. From 1.5, 2.4, 3something, to 4.1
and there is none available for download for 2202s, so maybe, just maybe, some of them are just software downgraded and there is possibility for upgrade :)
And from another bottle, the battery issue some of users descibed, is also present in mine unit, but let's say it is no big deal, just little annoying. Some said that this is scaled well, but from my measurements, when scope screams low battery, there is still at least half of juice in them. Ignoring this message it can work for long long time still.
So it shows a full battery bar until it drops to 3,98V.
Another step(like 2/3) is below 3,89V.
Another(half) is at 3,81V which is quite right.
And it shows almost empty with little red bar, and low battery message at 3,69V when battery is still about half full. It might be 40-60% depending by cell chemistry, but definitely not low ;)
In the end little red bar disappears at 3,57V and battery bar seems fully depleted.
and it powers down at 3,43V. So the scaling could be better definitely.
Based on my reading, it appears that Owon is creating firmware specific to each hardware revision of the board. Which is unfortunate because it means it's not possible to simply update the firmware.
Interesting that our scopes seem to both have the startup graphic, but drastically different firmware numbers. Could you post a picture of the other side of your board? I am curious how it compares to mine.
I tested my battery out and noticed that it to turns off at 3.5v and charged to 4.20 volts. I am ok with this, because that is mostly discharged, and it's harder on the batteries to go much deeper. I would rather sacrifice a small amount of runtime for a longer lifespan of the battery. Mine does run for almost exactly 4 hours though, which is less that the 6 hours that they originally advertised.
Overall I think this scope is great for what it is and its price. I wish it had a higher output frequency of the signal generator, could do FFT, and calculate RMS for the waveforms, but even without that it is extremely usable and a great addition to my toolbox. The DMM is complete garbage, but I had no intention of actually using it when I purchased it so I don't really care. :-DD
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Sure here's the photo. Sorry I've been little busy.
Yep it is nice for the price, but could be great if soft would be open source :horse:
I saw that the higher model 2202s have RMS, and allover one more page(3 more options) of measuring options.
And about DMM, I totally forgot that it even has one :-DD, For my liking it could had none, and cost less, and be even smaller. But whatever :)
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Hello guys, I bought 2102s, and it seems it got some issue with noise. I got about 120-160mV on 1V/div,
1,2v-1,6V on 10V/div and so on. Does anybody had similar issue with it? I contacted seller(bg), but they claim that manufacturer said that "small noise is no problem" :palm:
https://youtu.be/N5MOkVwMtk8
I have very similar noise in hds2102s (hw:v1.1, fw:v3.0.0). I feel like quality control is going downhill. I saw various videos on youtube with models 272 and 2102 - the oscillograms were less noisy. In my owon more noise appeared after a few months of use.
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Yep, it is not much maybe, but I decided to buy it after Mr. Kerry Wong's video's. And in there the oscillogram sat still as f.
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Sure here's the photo. Sorry I've been little busy.
Yep it is nice for the price, but could be great if soft would be open source :horse:
I saw that the higher model 2202s have RMS, and allover one more page(3 more options) of measuring options.
And about DMM, I totally forgot that it even has one :-DD, For my liking it could had none, and cost less, and be even smaller. But whatever :)
Interesting. Your board model matches mine, but your is slightly higher revision.
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@miklas, this is a video from my owon from 3-4 months ago (there are other videos about hds2102s):
https://www.youtube.com/watch?v=IqCdtQTwj8o (https://www.youtube.com/watch?v=IqCdtQTwj8o)
An another video:
https://www.youtube.com/watch?v=31Z96lZhZGk (https://www.youtube.com/watch?v=31Z96lZhZGk)
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What is your acquisition mode set to? If I set mine to sample I see a thinner trace, but more visible noise (like Orb's video). If I set my aquisition mode to peak detect however, I get a thicker but very stable trace (like Kerry Wong's videos).
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Hi All,
I just purchased the HDS272, so without built-in AWG, and am very happy with the device so far. When I opened it up it looks a lot like it's just an assembly variant of the model with AWG though, since there is a spot for an extra BNC connector. Looking at pictures of the HDS272S internals it looks like the exact same board, except that one has the third BNC connector installed. It wouldn't surprise me if one can simply add that third BNC and install the HDS272S firmware, but I wanted to check if anyone here has taken the plunge and tried this already.
A potential snag is getting the firmware binary. My device is at V8.1.0, and if I understand correctly the major version is tied to a specific revision of the PCB. Unfortunately it looks like Owon do not provide the V8.x binaries on their site, even though other versions (6.1.0, 5.7.1 etc) are available for both the HDS272 and HDS272S. Does anyone know where to get the V8.1.0 firmware for the HDS272S?
Thanks in advance,
Jeroen
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Does anyone know where to get the V8.1.0 firmware for the HDS272S?
https://www.owon.com.hk/index-1.asp (https://www.owon.com.hk/index-1.asp)
Look at the bottom of the page ("CONTACT US"), there is an email address.
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Hi All,
I just purchased the HDS272, so without built-in AWG, and am very happy with the device so far. When I opened it up it looks a lot like it's just an assembly variant of the model with AWG though, since there is a spot for an extra BNC connector. Looking at pictures of the HDS272S internals it looks like the exact same board, except that one has the third BNC connector installed. It wouldn't surprise me if one can simply add that third BNC and install the HDS272S firmware, but I wanted to check if anyone here has taken the plunge and tried this already.
A potential snag is getting the firmware binary. My device is at V8.1.0, and if I understand correctly the major version is tied to a specific revision of the PCB. Unfortunately it looks like Owon do not provide the V8.x binaries on their site, even though other versions (6.1.0, 5.7.1 etc) are available for both the HDS272 and HDS272S. Does anyone know where to get the V8.1.0 firmware for the HDS272S?
Thanks in advance,
Jeroen
Unlikely because the AWG chip is probably also not populated. You can check by looking at display side of the PCB.
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Unlikely because the AWG chip is probably also not populated. You can check by looking at display side of the PCB.
Ah, that makes sense. I didn't go that far in yet, but you're probably right. Oh well, I guess my next project is going to be building a signal generator :).
Thanks!
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Hello all,
I am a complete noob when it comes to oscilloscope but I have done as much leaning as I could and have watched retro computer videos for years, so I thought I would be able to get the basics right at least but I have very quickly found the shallow bottom of my knowledge pool.
I have bought a Owon HD242 as I am currently only interested in low frequency retro computers. My first victim is a C64 running at 1Mhz. Basic signal like clock are fine but as soon as I probe address or data lines on the bus, I get a mess of lines. The scope seems to trigger but I have 10 to 20 competing lines at least on my display. If I stop the capture, it is still all messed up but when I move my cursor left or right, then it seems to sort itself out. I am doing something wrong or is the scope faulty? I am on the V8.1.0 firmware.
Probe and scope on 10x but I have tried 1x as well. Of course DC coupling, I have tried the AUTO button and I have done the probe compensation. But the problem seems to be more in the behaviour of the software than the capture IMO.
Anybody has an idea?
Many thanks!
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Not much experience with scopes, but I think normal triggering
is most useful with repeating wave forms (e.g. sine wave, square
wave, PSU ripple). Address and data lines aren't repeating, so
you will see "a mess of lines". You could try to set the trigger
type to single.
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My first victim is a C64 running at 1Mhz. Basic signal like clock are fine but as soon as I probe address or data lines on the bus, I get a mess of lines. The scope seems to trigger but I have 10 to 20 competing lines at least on my display.
Does it look similar to this video?
https://youtu.be/Uqrel5fQpK4?t=1278
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Does it look similar to this video?
https://youtu.be/Uqrel5fQpK4?t=1278
Exactly what it shows at 22:10! The video mentions "persistence" which is the word that came to my mind initially as well, but there is no setting I can find to switch it off. One difference, in the video he takes the probe off the pin and the signal looks fine, mine seems messed up until I scroll left or right
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Does it look similar to this video?
https://youtu.be/Uqrel5fQpK4?t=1278
Exactly what it shows at 22:10! The video mentions "persistence" which is the word that came to my mind initially as well, but there is no setting I can find to switch it off. One difference, in the video he takes the probe off the pin and the signal looks fine, mine seems messed up until I scroll left or right
Go under the horizontal time base menu it's on the second page.
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Does it look similar to this video?
https://youtu.be/Uqrel5fQpK4?t=1278
Exactly what it shows at 22:10! The video mentions "persistence" which is the word that came to my mind initially as well, but there is no setting I can find to switch it off. One difference, in the video he takes the probe off the pin and the signal looks fine, mine seems messed up until I scroll left or right
Go under the horizontal time base menu it's on the second page.
My HDS2102S only has "Refresh High/Low", "Hor Center" and "Counter On/Off" on the second page of the horizontal menu. Is Refresh Low what you're referring to - I don't have a suitable signal to test right now.
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Does it look similar to this video?
https://youtu.be/Uqrel5fQpK4?t=1278
Exactly what it shows at 22:10! The video mentions "persistence" which is the word that came to my mind initially as well, but there is no setting I can find to switch it off. One difference, in the video he takes the probe off the pin and the signal looks fine, mine seems messed up until I scroll left or right
Go under the horizontal time base menu it's on the second page.
My HDS2102S only has "Refresh High/Low", "Hor Center" and "Counter On/Off" on the second page of the horizontal menu. Is Refresh Low what you're referring to - I don't have a suitable signal to test right now.
Yes try refresh low. That being said, what are you trying to see? A basic scope like the Owon is only heading to tell you if data is going over the wire, nothing about the data itself.
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Thanks guys, setting refresh to low works perfectly. I can now use it.
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Evil twins (fw: v3.0.0 & v4.1.0). Both have "base" noise.
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Hello everybody, I made a series of 3 videos of this scope (1 intro, 2 dmm, 3 scope).
Those are my first videos, be kind with me...
I spake Spanish in videos too.
If you want to check I attach a link with part 3 (scope review).
https://youtu.be/z3vBFMeZHes
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Anyone know the time/div range for roll mode? I don't see anything about roll mode in the specs (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope)).
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100 ms/div
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Anyone know the time/div range for roll mode? I don't see anything about roll mode in the specs (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope (https://www.owon.com.hk/products_owon_hds200_series_digital_oscilloscope)).
100, 200, 500 ms/div
1, 2, 5, 10, 20, 50, 100, 200, 500, 1000 s/div
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Does anyone else have a problem with the speed of the multimeter - especially the squeak? Board v3.2 software V8.1.0
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I haven't read the 27 page thread yet, but have some questions:
#1 - Is there a way to hack the units such as turning a 272S into a 2202S for example?
#2 - Assuming no to #1, are the 2102S or 2202S units worth the extra money?
#3 - What does everyone think of the AWG, same question, is it also worth the extra money?
#4 - Any problems with these units, downsides, etc?
I've been wanting to mess around with a handheld one and I really like the low price of the 272S @ $185 at Amazon.
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#1 IIRC different hardware -> no
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#1 IIRC different hardware -> no
And even then there are different hardware variants within the same model number that run somewhat different versions of firmware.
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I've borrowed one of these, HDS242S.
#2 This is a basic, edge triggering oscilloscope. For me, more bandwidth would be diminishing returns for the extra money. If you are doing demanding work, you might be better off putting the money aside towards a more featured bench oscilloscope. But it depends on your project/use case though.
#3 Yes I think the AWG is a high value feature. Limited amplitude range, no modulation. But much less expensive than a standalone device.
#4 The best features are its compactness, convenience and being 'isolated' (the inputs and outputs are not isolated from each other, but the whole thing is floating with respect to the device you are testing when you are on battery power). Downsides are the short memory depth, so you can't zoom in very far on 'bursts' and the somewhat awkward rubber button interface is less convenient than rotating knobs you have on a bench oscilloscope. However, if you are patient and work through it, the compromise is ok.
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Has anyone tested the bandwidth on the 40 MHz model?
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Hello,
in https://www.mikrocontroller.net/topic/542385 (https://www.mikrocontroller.net/topic/542385) at 27.11.2022 16:27, 16:34 and 16:42 Old P shows a few measurements.
Best regards
egonotto
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Some of the translations are interesting on that mikrocontroller.net thread.
Ikea wrote:
> the PM3350A
For heaven's sake...
What a towing to balance the oil tubular cucumber around the area
and then look for a socket.
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You are right porter, the 2nd post when translated to English is this!
>Who likes a mouse cinema.
I'm guessing mouse cinema = small screen ?
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Regarding "Mäusekino" found this...
https://www.tuningblog.eu/kategorien/tuning-wiki/maeusekino-229048/ (https://www.tuningblog.eu/kategorien/tuning-wiki/maeusekino-229048/)
(Google Translated...)
Don't let the cute name "Mouse Cinema" distract you, because it's actually a tuning measure for your vehicle that was even available ex works at the time. Very small screens in the vehicle are referred to as mouse cinema. Most are smaller than 15 inches. But there are other definitions. Consequently, an illuminated dashboard is also called a mouse cinema. The name originated with the first Opel Senator/Omega, which was equipped with a digital speedometer. The experts said early on: "The cart is pretty chubby, it even has a real mouse cinema in it." The name mouse cinema soon established itself. Another meaning for mouse cinema is the LED instantaneous consumption display or the LED tachometer. Also the 21 x built bb Buchmann VW Polo Carathad this technique. There it was called DINFOS Digi-Cockpit.
and also:
(https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1841998)
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I ordered a HDS242 and did two tests on it. I fed a 1V signal sinewave from my Siglent AWG and kept pushing the bandwidth up 1 MHz at a time until the voltage P-P fell to 0.707V. Made it to 76 Mhz. I then tried out the Leo Bodnar pulsar on it and used the cursor to measure 4.6nS (350/4.6=76.08 MHz). For the money it is pretty nice. It came with firmware v8.1.0.
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Does anyone have problems with the single triggering? First it doesn't say "triggered" or maybe it does but then replaces it with ready too quickly to know you have triggered it. This would be in slow modes like 500ms where it takes a number of seconds to capture a waveform. Also, sometimes it doesn't trigger at all, I'm just testing it with a rising edge set to 3V and a 9V battery.
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Here's a good one. Trying to figure out why an ESP32 board is not programming from Arduino IDE.
Single trigger at 500ms/division.
(https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1846225;image)
Zoom into 50ms/div - no problem.
(https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1846231;image)
Zoom into 20ms/div - what the?
(https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1846237;image)
Move horizontally and the last nearly 4 divisions show nothing, the Ch1 pulse stays where it is but changes slightly somehow and the rest of the waveform moves left.
(https://www.eevblog.com/forum/testgear/owon-hds-200-handheld-oscilloscope-w-builtin-dmmawg/?action=dlattach;attach=1846243;image)
v4.0.0 on a HDS2102S
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Can someone send me V8.0.1 hds272s .
Please.
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You can have a look here: https://github.com/fuho/owon_hds200/tree/main/Firmware (https://github.com/fuho/owon_hds200/tree/main/Firmware)
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I made a suggestion to Owon that they express the vertical offset in volts instead of divs; they said they would pass it on to their engineer.
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is there no way to disable the beeping sound? just looked around the settings and couldn't find anything
hds242S HW V3.1
firmware: v5.7.1
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Does anyone have problems with the single triggering? First it doesn't say "triggered" or maybe it does but then replaces it with ready too quickly to know you have triggered it. This would be in slow modes like 500ms where it takes a number of seconds to capture a waveform. Also, sometimes it doesn't trigger at all, I'm just testing it with a rising edge set to 3V and a 9V battery.
500ms * 8 = after 4s exactly
In single trigger mode I have the same issue in both HDS2102S (fw: 3.0.0 & 4.1.0).
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Hi - I have a HDS272S HW 2.0 not used for a while. I as trying to update FW today (it's 2.0.1) and it does not seem that I can upgrade it. Placing a 3.3.3 on the USB driver and rebooting leads to an "upgrade error 4". I can't find any other firmware that seems to work as a jump off point.
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I as trying to update FW today (it's 2.0.1) and it does not seem that I can upgrade it. Placing a 3.3.3 on the USB driver and rebooting leads to an "upgrade error 4".
You can't do it. V3.3.3 is only for V3.X.X on the board.
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Interesting that there's a v2.0.1 -> v2.0.4 firmware update for the HDS2102(S), but not for the HDS2202(S). In fact you can't even select the HDS2202(S) in the model dropdown list for firmware. I wonder what changes there were from 2.0.1 in the 100Mhz model that didn't apply also to the 200Mhz model?
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I as trying to update FW today (it's 2.0.1) and it does not seem that I can upgrade it. Placing a 3.3.3 on the USB driver and rebooting leads to an "upgrade error 4".
You can't do it. V3.3.3 is only for V3.X.X on the board.
argh ... that's sad and bad SW development (I'm an embedded SW dev). I guess that have done a few wrong things with their bootloader when version is 2.x is loaded. I'll see if there is any chance to reload the whole thing (bootloader+firmware) but I guess probably not.
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Hello HDS200 experts. I've have a HDS242S but have recently damaged it - apparantly by connecting one of the scope channels to the AWG output. I didnt know that was a bad idea, and dont see any note in the manual saying not to do that, but it seems from Owon's customer support comment it was. I emailed them asking if it could be inspected or repaired, and below is what they say, which doesnt make a lot of sense to me:
"according to our engineer's judgement, your device may burn out because of the wrong operation caused the voltage backfilling by waveform generator. I am afraid, it can't be fixed by repairs now."
I know its not worth wasting too much time on it, but It's been a good tool for me up til now and I'm a bit reluctant to buy another given the fragility and lack of support from the manufacturer and agent to repair, so I would like to at least investigate repair before I throw it away.
Anyhow, what I now have is in scope mode both Ch1 & 2 are pegged at the bottom of the screen, if set to 1v/div they show -4V. The AWG works but outputs a very low voltage, like 0.3V when set to output 3.0V.
My electronics knowledge is relatively basic (I'm an automotive guy), but I thought it was worth asking here if there are any thoughts on what could be damaged as it doesnt seem like it is anything too major to me (famous last words I know). I found a post back on page 20 of this thread where another user had a similar issue and found visible damage to diode D11 (BAV99) and Reg U6 (SGM2019-ADJ). There is no visible damage that I can find on mine (I havent removed the shields though). I desoldered the D11 diode and done a basic multimeter test and that seems ok. I measured the output from U6 at about 1.27V but have no idea what to expect from that.
Does anyone here have any suggestions what else I should look at?
Oh, I almost forgot, this is a very early one - V1.0 board. I havent had it all that long but I ended up with old stock it seems.
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"according to our engineer's judgement, your device may burn out because of the wrong operation caused the voltage backfilling by waveform generator. I am afraid, it can't be fixed by repairs now."
Translation: they think you back-fed something into the AWG output.
Connecting the AWG to the scope input would not have caused anything to break. People do that all the time, you should feel free to connect whatever signal you want, so long as you respect the voltage limits of the input (derated for very high frequencies), and are aware that the 'negative' or BNC ground is connected internally to everything else that is grounded inside, for example the ground connection of the USB plug, the multimeter etc.
It is possible, although not good enough design, that simply 'shorting' the output of the AWG could have damaged it. However, most AWGs are designed to survive that, for obvious reasons.
It's possible from what you have described that the input part of the oscilloscope relies on an offset voltage that is coming from a power circuit that also supplies the AWG -- so if you can fix the AWG or its power source then the oscilloscope may work again. Hard to do without a schematic, but there are a lot of experts here so if you post some nice sharp photos you will get some good advice on what to check.
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Is this thread about the Owon HDS242/272 scopes or the OWON
HDS2100/2200 scopes???? Hard to follow :wtf: :scared: :scared:
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Is this thread about the Owon HDS242/272 scopes or the OWON
HDS2100/2200 scopes???? Hard to follow :wtf: :scared: :scared:
All of them? They're all part of the same HDS200 series of scopes in 40/70/100/200 Mhz bandwidths with built-in DMM and (optional) AWG.
(https://www.owon.com.hk/Upload/image/20211/16/1.jpg)
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Received my HDS2202S today, on sale from Aliexpress for US$165.
firmware:V2.1.0
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It's possible from what you have described that the input part of the oscilloscope relies on an offset voltage that is coming from a power circuit that also supplies the AWG -- so if you can fix the AWG or its power source then the oscilloscope may work again. Hard to do without a schematic, but there are a lot of experts here so if you post some nice sharp photos you will get some good advice on what to check.
Thanks Adam, this encouraged me to take another look at that U6 adjustable reg. I am now pretty suspicious this might be the problem.
This is what I have:
(https://i.imgur.com/ZBGCthi.jpeg)
And I interpreted that into the schematic below. If I have that right, R78 is 110K, and R76 is 39K (does the underscore on the 9 mean anything?). If I use the formula from the SGM2019-ADJ datasheet (https://i.imgur.com/6xFZuyk.png) I expected to see around 4.6V on Vout, but I only measure about 1.7V on the out pin.
(https://i.imgur.com/MW5PNMA.png)
So that made me suspicious. With no replacement reg I could find avail locally, and a dead device with really nothing to lose, I decided to try feeding a variable voltage into the "Out" pin with an adjustable bench supply (set with a low max current). With about 3.3V feed into that pin my CH1 & 2 came back on screen showing around zero volts. Not sure why 3.3V and not the calculated 4.6V but I guess there are many potential issues with my diagnostic process. Also I had run the calibration process earier when the inputs were reading wrong so that may have built a big offset in somewhere. My bench power supply was showing 70mA when feeding into Vout which is more than I expected to see, but I guess it could be the reg trying to pull it down? No smoke came out anywhere so im hopeful it is just that reg causing the issue. I've ordered a few so I will soon find out I guess.
Relevant bit from the Datasheet:
(https://i.imgur.com/RMhzJTK.png)
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I bought the "Hanmatek" branded version of this scope (HO52, equivalent to the HDS242). I was expecting it to the be the same as the OWON model, but there are a few unexpected differences.
From the outside it looks the same but with a slightly different enclosure (it tapers at the bottom and green rubberized material goes all the way around the sides).
The System > About screen lists the Hanmatek model name, but also FW v8.3.0. This doesn't match any known firmware version from OWON.
When I open it up there are more noticeable differences.
First, the board stamp says "HDS200-MAIN-V3.3 2023-2-2". This matches OWON boards, except the HW version/date is newer than others shared before (most recent I've seen is 3.0 dated from 2021).
Serial number is 2309xxxx, so I assume it was assembled during the first week of March 2023.
The other big difference is that instead of a removable 18650 Li-Ion battery carrier, it instead has a 124065 Li-Po 4Ah battery pack soldered to the board. Interestingly, while the positive lead is soldered to the original battery carrier pad, the negative lead is soldered directly to the 3130 battery protection SMD output pins (I assume that's what it is - the face of the package is slightly melted :-\ - but its in the same place as other rev boards).
I'm unable to check the Hanmatek website about firmware updates. Since it was assembled so recently it's possible this includes the changes added in OWAN's May 2023 FW update. I'm not sure if future FW updates will have to be released by Hanmatek, or if it will be possible to use the files provided by OWAN. It remains to be seen if the HW v3.3 board is exclusive to Hanmatek or if OWAN will begin assembing their own units using it.
Has anyone else encountered this HW revision? Has anyone had success getting FW updates for the Hanmatek rebranded units (from either Hanmatek or OWAN)?
Model: HO52 (Rebrand of HDS242)
Original FW: 8.3.0 [c1c4fd14]
Serial: 2309xxxx
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Today, I observed an unusual oscillation while measuring voltage at 60 Hz. I was generating a sine wave with a 280 mVp to compare its behavior between the millivolt (mV) and volt (V) ranges.
The measurements in the mV range seemed stable, with only the last digit occasionally flipping, as you can see at the beginning of the video.
However, when I switched to the V range, there was a noticeable oscillation in the last two digits, as seen at the 0:10 mark in the video. I also compared this to another meter, which displayed stable readings.
In an attempt to troubleshoot, I changed the frequency to 50 Hz at the 0:51 mark in the video. Surprisingly, after this adjustment, the measurements stabilized, and this trend persisted at other frequencies like 100 Hz, 200 Hz, and so on.
https://www.youtube.com/watch?v=8_yd_4PBtVo (https://www.youtube.com/watch?v=8_yd_4PBtVo)
I'm curious if anyone else has experienced a similar behavior with their equipment. Additionally, does anyone know if this issue can be addressed through a firmware update?
My equipment details:
Model: HDS2102S
Firmware Version: 2.0.4
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Hi :)
I've just received my new HDS2102S... it declares firmware V4.1.0... unluckily the official web site, at download page, seems quite bugged,I simply can't see any info with both Firefox or Chrome :'( ... is the V4.1.0 the last firmware available for this unit?
thks in advance for kind help :)
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Hi :)
I've just received my new HDS2102S... it declares firmware V4.1.0... unluckily the official web site, at download page, seems quite bugged,I simply can't see any info with both Firefox or Chrome :'( ... is the V4.1.0 the last firmware available for this unit?
thks in advance for kind help :)
I have the same version (edit: I have 4.0.0 it seems on a HDS2012S). The website is a bit rubbish but not "bugged" (I hate that term). There are many different hardware versions, so you enter your current firmware and it determines the hardware version from that and then shows the appropriate firmware. In our case it appears there are no firmware upgrades. I purchase mine in late 2022. There are definitely issues with it although I don't hold much hope in getting them fixed. See one I posted recently in this thread.
So a unit that's v3.x.x probably won't upgrade to anything v4.x.x. It seems somewhat that the first digit in the firmware is largely hardware dependent.
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you can't immagine how happy am I about the issues... before to buy I've watched many review/test in youtube nd nobody said a single word about issues and then... bang!... there are issues... WTF |O
one question if I may:
- may I use the integrated signal generator to push a square wave into a cable, let's say an rca cable loaded at opposite side with a resistor between shield and core, and measure how the signal is after the travel in the cable with one of the channel of our scope? ... or I will damage something?
The user manual says: "To observe the output of the waveform generator, connect the other end of the BNC cable to the signal input connector of the oscilloscope" ... so, in theory, it should be possible to connect the output generator at one side of the cable, connect at the same side a crocodile clip cable and into CH2, connect at the other side of the cable (where is a resistor as load) the probe and into CH1... in this way may I see how the signal start, how is at the endo of travel, delay between? ... or I will damage something?
all the suggestions/tricks are more then welcome... I'm a real rookie
thks in advance :)
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you can't immagine how happy am I about the issues... before to buy I've watched many review/test in youtube nd nobody said a single word about issues and then... bang!... there are issues... WTF |O
one question if I may:
- may I use the integrated signal generator to push a square wave into a cable, let's say an rca cable loaded at opposite side with a resistor between shield and core, and measure how the signal is after the travel in the cable with one of the channel of our scope? ... or I will damage something?
The user manual says: "To observe the output of the waveform generator, connect the other end of the BNC cable to the signal input connector of the oscilloscope" ... so, in theory, it should be possible to connect the output generator at one side of the cable, connect at the same side a crocodile clip cable and into CH2, connect at the other side of the cable (where is a resistor as load) the probe and into CH1... in this way may I see how the signal start, how is at the endo of travel, delay between? ... or I will damage something?
all the suggestions/tricks are more then welcome... I'm a real rookie
thks in advance :)
You can do what you want. The main thing is that you need to ensure ground stays the same at each end. The AWG ground is the same as the channel 1 and 2 grounds. If you connect a probe ground to the AWG signal, you will be shorting the output of the AWG. Hopefully the AWG output has some protection, but just don't do it in the first place.
This rule applies always to using most scopes. Grounds are common so you can't have probes referencing against two or more different locations as you'll just short the two points out.
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Just got the HDS2202S. Overall quite impressed with the function of the device, nice screen and UI is OK I think.
But the build quality seems a little "plasticky", especially the stand, just flopping around when picking it up, not great design.
Wondering about those plastic covered BNC connectors, how have those held up for you guys?
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I also received the HDS2202S and the oscilloscope does not appear to work correctly. There is all kinds of noise in the signal, and the resolution looks extremely low. I fed in a tone at 1MHz and 10MHz from an RF signal generator and it's barely recognizable as a sine wave. :'(
My unit has a 22xx datecode and running v1.2.0 firmware... I couldn't find any newer firmware listed anywhere... tried using HDS2102S v.1.5.1 as a last resort, but the update failed.
Does anyone have tips or should I just return it?
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I also received the HDS2202S and the oscilloscope does not appear to work correctly. There is all kinds of noise in the signal, and the resolution looks extremely low. I fed in a tone at 1MHz and 10MHz from an RF signal generator and it's barely recognizable as a sine wave. :'(
Hi. Could you show some video or screenshot of this issue?
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Only getting around 2.5 hour battery life with two Panasonic 3400mhA batteries. The HDS2202S draws around 1.2A constant in operation. Should I not be able to get double the battery life?
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I read a bit in the forum, but I didn't find what I was looking for.
With the HDS2202, if both channels are active, does the sampling of both channels remain at 1GSa/s? Doesn't it halve?
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I read a bit in the forum, but I didn't find what I was looking for.
With the HDS2202, if both channels are active, does the sampling of both channels remain at 1GSa/s? Doesn't it halve?
:palm:
https://youtu.be/1UaankSg1YI?si=_AOi6vmX-FaBpZlD
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Only getting around 2.5 hour battery life with two Panasonic 3400mhA batteries. The HDS2202S draws around 1.2A constant in operation. Should I not be able to get double the battery life?
I also have the 2202s. With used crap batteries from an old notebook
tested each for about 1800mAH it goes for about 2 hours. So your batteries are fake?
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thank you,
I've watched the entire video about 4 times, but I didn't notice something, I didn't pay attention to it.
Then I understood why it was so much more expensive.
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Only getting around 2.5 hour battery life with two Panasonic 3400mhA batteries. The HDS2202S draws around 1.2A constant in operation. Should I not be able to get double the battery life?
My test conditions: 50% screen brightness, sig gen on, oscilloscope running.
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Hello guys, I bought 2102s, and it seems it got some issue with noise. I got about 120-160mV on 1V/div,
1,2v-1,6V on 10V/div and so on. Does anybody had similar issue with it? I contacted seller(bg), but they claim that manufacturer said that "small noise is no problem" :palm:
https://youtu.be/N5MOkVwMtk8
And by the way the internals in my unit are propably the same as higher 2202s model, because it seems the same comparing with teardown photos, and it has Linsi brand ADC.
I just received my new HDS2102S (v4.1.0). Initially I ordered it because of the ADI ADC. But now I learned in this great forum that it has a LINSI ADC in meanwhile :'( Mine shows very similiar noise behavior like discussed on page 26 with nothing attached and DC mode. It is actually not completely noise, but a sine wave in the 50-60 kHz range. If the device is cold, I can even trigger on it and the noise is Vpp 160 mV at 1V/div. If the device warms up, it gets smaller (see attached screen shot). I am curious if HDS242 or 272 show similiar peak-to-peak noise. Can anyone check and post the figure for 1V/div?
Apart from this I am positively surprised regarding the multimeter performance and so far can't observe siginficant drift. More testing ongoing ...
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HDS272S V3.3.3
Ch1 and Ch2 set to 1x, empty and cold.
80-120mV I don't know the frequency, it doesn't measure it.
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HDS272S V3.3.3
Ch1 and Ch2 set to 1x, empty and cold.
80-120mV I don't know the frequency, it doesn't measure it.
Thanks for testing. Very similiar results. Some more testing today resulted in following findings for the scope accuracy:
- Noise: 1,0 - 1,5% related to full scale for all ranges except 10 mV/div (2,0 - 2,5%)
- 9V DC measurement error: 1,4 - 2,1% for 2 and 5 V/div; 1,9 - 3,7% for 10V/div
Looks like the device matches pretty much the OWON specification with 3% DC gain accuracy
Overall still happy with the performance for the price :-+
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3 images. Cold, warmed up 15 minutes, and warmed up 15 minutes and pressed AUTO.
As you can see line is bellow center on cold, and there is more noise.
Root temperature is about 18C.
Back in August, root temperature was around 25C. Back then there wasn't such a difference and so I did not pay attention to this. :-//
Though, what I've noticed, noise is calculated, if we drop vertical scale, noise is going to be less. In picture vertical scale is 10V, if I drop it down to 1V, V, Vpp & RMS will be lower.
(https://i.ibb.co/QQFXmDz/IMAGE1.png) (https://imgbb.com/)
(https://i.ibb.co/wpFGgnK/IMAGE2.png) (https://imgbb.com/)
(https://i.ibb.co/xY6jW2h/IMAGE3.png) (https://imgbb.com/)
Indeed, now that I began paying attention to the noise, I got scared, prior to reading this thread I thought my scope got broken (after I hooked it up to output of Baofeng UV-5R) :-DD
This is screenshot of scope warmed up & hooked up to internal wavegen, 1.000 0kHz, 1.00Vpp, square
(https://i.ibb.co/2tn813v/IMAGE1.png) (https://imgbb.com/)
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- Noise: 1,0 - 1,5% related to full scale for all ranges except 10 mV/div (2,0 - 2,5%)
- 9V DC measurement error: 1,4 - 2,1% for 2 and 5 V/div; 1,9 - 3,7% for 10V/div
I did some more testing on my new HDS2102S v4.1.0.
The accuracy values above are valid for a warm device after 30 minutes. In cold state the noise level is twice as high which is significant (see 1st screenshot).
The visibility of the noise (sine wave) in cold state depends on the vertical setting. For 10 mV/div and 500 mV/div settings the input sensitivity is maximum and the sine wave is annoying. For 200 mV/div and 10 V/div the sine wave isn't visible any more. The 2nd screenshot shows a signal measured with 500 mV/div in cold state. The sine wave generated by the HDS2102S input stage is clearly visible and disappears after 30 minutes.
Battery run time with new stock cells: In scope mode after 2:45 h battery indicator shows around 25% and suddenly immediately drops to red. Showing the 'Low Battery' warning the device runs an additional 45 min. In multimeter mode the run time is around 30% longer.
As the scope is only usable after 30 minutes with acceptable accuracy and the battery run time is only around 3+ hours (even in multimeter mode), I meanwhile have doubts that the OWON HDS2102S is suitable for use in the field :--
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I just received my new HDS2102S (v4.1.0). Initially I ordered it because of the ADI ADC. But now I learned in this great forum that it has a LINSI ADC in meanwhile :'( Mine shows very similiar noise behavior like discussed on page 26 with nothing attached and DC mode. It is actually not completely noise, but a sine wave in the 50-60 kHz range. If the device is cold, I can even trigger on it and the noise is Vpp 160 mV at 1V/div. If the device warms up, it gets smaller (see attached screen shot). I am curious if HDS242 or 272 show similiar peak-to-peak noise. Can anyone check and post the figure for 1V/div?
@hgryska - picture from post above - is it 1V x1 or x10?
2 * HDS2102S (fw: v3.0.0 & v4.1.0); 1V/div, x1, "high", 4K; cold.
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@hgryska - picture from post above - is it 1V x1 or x10?
1 V/div, x1
Do you also see the sine wave disturber in cold state especially in 500 mV/div or 10 mV/div mode like in the lower screenshot in my previous post?
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Yes, @10 mV the oscillogram is distorted when the probes are not shorted. You can then see something that looks like a sine wave. Both hds show the same thing. 500 mV/div - the same behaviour, it is more visible at 50 us.
//
HDS2102S -> NEC code from IR tv remote.
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The HDS2202 has arrived. The battery part is quite lukewarm, and the noise level is also the usual, which is experienced with the others.
The switch-on time is 5-6 seconds.
HW date: 2023-07-05
HD Version V2.4.1
Software version V2.1.0
The rise time of the pulse is 160 ps.
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I don't know how it worked or what caused it, but it's an interesting bug.
I apologize in advance for the quality.
https://youtu.be/MtkFMSuT1rk (https://youtu.be/MtkFMSuT1rk)
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I don't know how it worked or what caused it, but it's an interesting bug.
I apologize in advance for the quality.
https://youtu.be/MtkFMSuT1rk (https://youtu.be/MtkFMSuT1rk)
(http://i.imgur.com/uVtsIv5b.jpg) (https://imgur.com/uVtsIv5)
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I think I found something.
If the memory is set to 8k and.
At 500ms, 50ms, 5ms, 500us /div, I stop it with the stop button.
Then the above bug appears at 200ms, 2ms, 200us 20us /div.
it only appears for me with the above time base.
There is none with 4K memory.
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The visibility of the noise (sine wave) in cold state depends on the vertical setting. For 10 mV/div and 500 mV/div settings the input sensitivity is maximum and the sine wave is annoying. For 200 mV/div and 10 V/div the sine wave isn't visible any more. The 2nd screenshot shows a signal measured with 500 mV/div in cold state. The sine wave generated by the HDS2102S input stage is clearly visible and disappears after 30 minutes.
Thanks to your feedback I returned the device and got it exchanged with another HDS2102S (v4.1.0). The strong noise and sine wave in cold state is gone (see attached screen shot). Actually the noise level after 30 minutes is only slightly lower compared to cold state :-+
Here are the results of noise evaluation (Vpp relative to full range) in warm and cold state (DC coupling, floating input, x1, sample, 4K, high):
2.5 - 3.0% for 10 and 20 mV/div
1.5 - 2.0% for all other range settings
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@hgryska, at 10 mV (x1) short the probes (channel 1&2) because what you see is also external noise. If you do this, the internal noise level should reach ~1.600 mV (8K), ~1.200 mV (4K).
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Just curious, I have an HDS272S, and I am wondering if anyone has figured out how to calibrate the DMM. I confess, I did not read all 29 pages of this thread, but read enough to gather that the calibration data is likely stored on eeprom.
I don't really care to attempt to calibrate the scope, I think it's good enough for what it is. But the DMM, showing all those digits... I'd sure like to touch it up.
Thanks in advance,
--E
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Well, I bought the HDS2202S... and clearly, I don't have a clue what I'm doing. I should have probably just waited and spent the money on a full-size o-scope. I now have another DMM with a signal generator built-in.
I tried reading the user manual but that is total garbage. The PC software is also a joke and does nothing but lock up and crash.
Also, I wasn't able to find any, "Oscilloscopes for dummies" videos that wasn't a sales video by an o-scope manufacturer. I know this is slight off topic but are there any good tutorials on practical usage of oscilloscopes that might help me learn how to use this HDS2202?
- Wil
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Also, I wasn't able to find any, "Oscilloscopes for dummies" videos that wasn't a sales video by an o-scope manufacturer. I know this is slight off topic but are there any good tutorials on practical usage of oscilloscopes that might help me learn how to use this HDS2202?
For real?
https://learn.sparkfun.com/tutorials/how-to-use-an-oscilloscope/all (https://learn.sparkfun.com/tutorials/how-to-use-an-oscilloscope/all)
https://www.youtube.com/results?search_query=Oscilloscopes+for+dummies (https://www.youtube.com/results?search_query=Oscilloscopes+for+dummies)
https://www.youtube.com/watch?v=lSHAE_Y6snc (https://www.youtube.com/watch?v=lSHAE_Y6snc)
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Well, I bought the HDS2202S... and clearly, I don't have a clue what I'm doing. I should have probably just waited and spent the money on a full-size o-scope. I now have another DMM with a signal generator built-in.
Hi. Don't worry, this scopemeter is easy to use once you know the basics. The HDS series is even easier to use than a regular oscilloscope, because it has fewer features.
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Hey, i've got the same problem over here, did you ever resolve it? I pretty much just got mine and stupidly backfed the arg...
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I bought the HDS272S and have been quite pleased with it. I'd bought the Hantek version which was really poor.
There is not much space on the front panel, so the operation of these things is a bit of a challenge, especially if you don't use them often.
At 200 MHz I think a Rigol or Siglent would be a better choice. These handheld units are intended for automotive service work. In my case I wanted a small scope for a portable Field Day bench.
Learning any scope is challenging. The handheld ones are an order of magnitude more difficult because it's all nested menus.
Have Fun!
Reg
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https://learn.sparkfun.com/tutorials/how-to-use-an-oscilloscope/all (https://learn.sparkfun.com/tutorials/how-to-use-an-oscilloscope/all)
https://www.youtube.com/results?search_query=Oscilloscopes+for+dummies (https://www.youtube.com/results?search_query=Oscilloscopes+for+dummies)
Those were good. Thank you!
For me, the disconnect... where the rubber isn't meeting the road... is "expectations". I know WHAT an o-scope does and how to get it to read values. However, I'm not "mentally there" with the diagnostic or troubleshooting process. My mind doesn't go, "Oh, I should hook the scope up here and see what is going on." For me, I physically see everything on the board and I can test for voltage and I can see that pins are getting voltages but I don't know what I SHOULD be seeing. I have seen several videos where a technician is using a scope and then says, "Ah, that doesn't look good"... but all of the stuff on the screen looks the same (to me) as all of the other stuff on the screen that has been there for the last 5 minutes. I don't know how to identify (visually) when something looks out of place... so the scope doesn't (yet) provide any diagnostic value for me. That's all I'm saying... my ignorance is preventing from realizing the value of a scope... which is another reason I haven't purchased a bench-top scope so far. I'm a chimpanzee with a handgun!
- Wil
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https://learn.sparkfun.com/tutorials/how-to-use-an-oscilloscope/all (https://learn.sparkfun.com/tutorials/how-to-use-an-oscilloscope/all)
https://www.youtube.com/results?search_query=Oscilloscopes+for+dummies (https://www.youtube.com/results?search_query=Oscilloscopes+for+dummies)
Those were good. Thank you!
For me, the disconnect... where the rubber isn't meeting the road... is "expectations". I know WHAT an o-scope does and how to get it to read values. However, I'm not "mentally there" with the diagnostic or troubleshooting process. My mind doesn't go, "Oh, I should hook the scope up here and see what is going on." For me, I physically see everything on the board and I can test for voltage and I can see that pins are getting voltages but I don't know what I SHOULD be seeing. I have seen several videos where a technician is using a scope and then says, "Ah, that doesn't look good"... but all of the stuff on the screen looks the same (to me) as all of the other stuff on the screen that has been there for the last 5 minutes. I don't know how to identify (visually) when something looks out of place... so the scope doesn't (yet) provide any diagnostic value for me. That's all I'm saying... my ignorance is preventing from realizing the value of a scope... which is another reason I haven't purchased a bench-top scope so far. I'm a chimpanzee with a handgun!
- Wil
Your first and best diagnostic tool is the one between your ears. ;)
Basic circuit design/operation knowledge indicates how we should test it by direct measurement or even 'near field' in some cases.
Experience helps one know which tool to reach for.
When experience is developed one has some idea of what a measurement should be before connecting test equipment.
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When experience is developed one has some idea of what a measurement should be before connecting test equipment.
Well, that's a catch-22. I don't do this for a living and have no experience so the only opportunity I have to get experience is to connect test equipment. My only resources are YouTube and this forum.
- Wil
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When experience is developed one has some idea of what a measurement should be before connecting test equipment.
Well, that's a catch-22. I don't do this for a living and have no experience so the only opportunity I have to get experience is to connect test equipment. My only resources are YouTube and this forum.
- Wil
Thought and study wins.
Also coming from hobbyist beginnings, repairing stuff you learn lots and get to understand basic circuit principles and the building blocks that when cobbled together make things work.
Datasheets can guide you into deeper understandings.....
Little steps and you will get there.....
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XL4015E1 noise/ripple (probe X1; 10 mV & 2 ms/div; 1.8V & 1A load), with/out LC filter module (4A max load). Yes, I used here 2 hds. For this kind of purposes, I think owon is quite useful.
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XL4015E1 noise/ripple
This might help :)
https://youtu.be/pKXPqApOYfk?t=71
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I have just got a Hds2102 today. Hw v1.2.1. Sw V4.2. Adc Linsi LS08D1500. Board was marked 2023 June. My curiosity is whether it is possible to flash 2102 with a 2202 firmware, since the hardware seems to be identical, except for the unpopulated area near the ADC, and the analog part, of course. Btw, I could not find 2202 firmware on Lilliput to try :).
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i recently got a multicomp pro mp720781 which is an owon hds242s and while at first i was impressed with its scope performance, lately i've found it to be horribly annoying, with it shutting off at random. sometimes i turn it on and it immediately turns off, sometimes it lasts a few seconds on, sometimes a few minutes, sometimes it doesn't turn itself off at all. it doesn't matter if it's fully charged, or if it's plugged into the charger, or if its battery is almost discharged. this behaviour has made it really horrible to use.
has anyone experienced this with their hds?
Thank you!
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I have just got a Hds2102 today. Hw v1.2.1. Sw V4.2. Adc Linsi LS08D1500. Board was marked 2023 June. My curiosity is whether it is possible to flash 2102 with a 2202 firmware, since the hardware seems to be identical, except for the unpopulated area near the ADC, and the analog part, of course. Btw, I could not find 2202 firmware on Lilliput to try :).
They haven't released a new one yet, the 2202 is perfect.
It won't work because the two hardware are completely different.
i recently got a multicomp pro mp720781 which is an owon hds242s and while at first i was impressed with its scope performance, lately i've found it to be horribly annoying, with it shutting off at random. sometimes i turn it on and it immediately turns off, sometimes it lasts a few seconds on, sometimes a few minutes, sometimes it doesn't turn itself off at all. it doesn't matter if it's fully charged, or if it's plugged into the charger, or if its battery is almost discharged. this behaviour has made it really horrible to use.
has anyone experienced this with their hds?
Thank you!
I don't, I have no problem with either the 272S or the 2202.
No newer firmware for yours?
I don't know if multicomp is compatible with owon.
If it's still under warranty, I'd send it back.
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i recently got a multicomp pro mp720781 which is an owon hds242s and while at first i was impressed with its scope performance, lately i've found it to be horribly annoying, with it shutting off at random. sometimes i turn it on and it immediately turns off, sometimes it lasts a few seconds on, sometimes a few minutes, sometimes it doesn't turn itself off at all. it doesn't matter if it's fully charged, or if it's plugged into the charger, or if its battery is almost discharged. this behaviour has made it really horrible to use.
has anyone experienced this with their hds?
Thank you!
I don't, I have no problem with either the 272S or the 2202.
No newer firmware for yours?
I don't know if multicomp is compatible with owon.
If it's still under warranty, I'd send it back.
Thanks, yeah, no new firmware available from farnell's site. i got this from a contest, so it seems no warranty, which sucks, I'll look around and see if the owon firmware is fully compatible. The board and everything inside just carries the owon part numbers, so the hardware should be the same, but who knows if if will recognize the owon firmware without any fiddling.
Thank you
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I recently picked up an HDS2202S for some field work. Was pleasantly surprised by how well the XY mode display worked. Tried it out with my curve tracer which i generally use with an analog scope and was surprised by how usable i could make it
So that got me wondering about a curve tracer attachment to work with the HDS specifically, using its signal generator as a source and hopefully mounting it to eliminate all the cabling etc.
Anyway after a little breadboarding and some messing around i came up with this. Uses regular panel mount bncs so it can be used standalone or with an external signal for more voltage than the 5V of the internal. Otherwise it mounts directly to the HDS connectors with some bnc couplers to allow finger space to operate the locking rings. Internally it’s just two resistors.
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Thanks, yeah, no new firmware available from farnell's site. i got this from a contest, so it seems no warranty, which sucks, I'll look around and see if the owon firmware is fully compatible. The board and everything inside just carries the owon part numbers, so the hardware should be the same, but who knows if if will recognize the owon firmware without any fiddling.
Thank you
That's a good question, because multicomp reduce the memory in the 242 and 272 series to 6k for some reason?
The Owon firmware is a bit tricky, there are multiple hardware and software editions.
My 272s is V3 and if I see correctly they are already at V6. |O
If you simply have an Owon, you can see its data in the menu item System/System/F4/About.
You can use the Version number to get the latest firmware from the owon site.
If multucomp specified its own numbering, it can be difficult.
It might help to identify if you share the version number and production date from the board.
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I recently picked up an HDS2202S for some field work. Was pleasantly surprised by how well the XY mode display worked. Tried it out with my curve tracer which i generally use with an analog scope and was surprised by how usable i could make it
So that got me wondering about a curve tracer attachment to work with the HDS specifically, using its signal generator as a source and hopefully mounting it to eliminate all the cabling etc.
Anyway after a little breadboarding and some messing around i came up with this. Uses regular panel mount bncs so it can be used standalone or with an external signal for more voltage than the 5V of the internal. Otherwise it mounts directly to the HDS connectors with some bnc couplers to allow finger space to operate the locking rings. Internally it’s just two resistors.
Well first, welcome to the forum. :)
Second, very nice! Is that a laser-etched aluminum case? Any plans to share the design?
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I really want this model. But the price is quite high.
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Anyway after a little breadboarding and some messing around i came up with this. Uses regular panel mount bncs so it can be used standalone or with an external signal for more voltage than the 5V of the internal. Otherwise it mounts directly to the HDS connectors with some bnc couplers to allow finger space to operate the locking rings. Internally it’s just two resistors.
Very nice. What are the resistor values? What waveform do you use from the siggen?
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Very nice. What are the resistor values? What waveform do you use from the siggen?
thanks
the signal generator is outputting a 500Hz sine at 5V, the scope has X at 1V/div and Y at 10mV/div, horizontal timebase 200uS
i will write up a little parts list etc and sizes and positions of holes and post
The scope bncs are on 20mm spacing though, and the banana terminals i spaced at standard .75” apart so i could use standard banana adapters as also as that distance happened to land them directly between the bncs
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Well first, welcome to the forum. :)
Second, very nice! Is that a laser-etched aluminum case? Any plans to share the design?
Thanks, and yes it’s etched with a small fiber laser engraver which can mark metal directly. Works great on aluminum - especially anodized but will mark plain metal also, also works well on steels including stainless where it produces a darker image vs the aluminum where the etch looks lighter than the metal. isn’t a deep etch, can’t feel it with but it works great for legends etc, and looks much better than labels.
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I cobbled a few parts together to test this before making a nice box. For some reason, I can't get the trace to center. It is two divisions low. I have a 272S. I've messed with every setting, but none will center the line. I must be missing something.
Not related to the above, but I tried sine and triangle waves. Both seem to work the same.
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Did you vertically center both the traces in the scope before you switched to X-Y? There’s no way it could have any kind of DC offset given it is using the builtin siggen assuming you have no offset on that
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To quote Homer Simpson, "Doh!"
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I don't know if you've seen this video, but W2AEW did this on a breadboard: https://www.youtube.com/watch?v=WWY-pakm_OM (https://www.youtube.com/watch?v=WWY-pakm_OM)
I'll have to say, that yours is the nicest looking one using this simple design. I'm going to box up my cobbled together version, but it will be in a plain looking project box :)
Of course, the idea of a curve tracer (octopus) is quite old. There are several ways to make one. Years ago, I made a traditional one, using a 6 V transformer.
I've been playing about a bit with scope settings and resistor values. First, I found that you need to use DC coupling, as AC coupling will cause the trace to move downward when you attach a component, like a diode.
I decided to only use 3 V from the SG, as this is enough for even LEDs, but not enough to blow up 3.3 V ICs. With this change, I had to go with a 47 Ohm resistor between the SG and Ch 1. I set Ch1 (X) to 500 mV/div to get more resolution on the voltage knee for diodes. I set Ch2 (Y) to 50 mV/div to keep the trace on the screen, with the voltage and resistor I am using. The 200 us that you used still works fine.
My mistake. I forgot that the sinewave is 5 Vpp, not RMS. At 5 V, it wouldn't work with a blue or white LED.
Thanks for posting about your version. It integrates very nicely with the Owon scope.
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I don't know if you've seen this video, but W2AEW did this on a breadboard: https://www.youtube.com/watch?v=WWY-pakm_OM (https://www.youtube.com/watch?v=WWY-pakm_OM)
I'll have to say, that yours is the nicest looking one using this simple design. I'm going to box up my cobbled together version, but it will be in a plain looking project box :)
Of course, the idea of a curve tracer (octopus) is quite old. There are several ways to make one. Years ago, I made a traditional one, using a 6 V transformer.
I've been playing about a bit with scope settings and resistor values. First, I found that you need to use DC coupling, as AC coupling will cause the trace to move downward when you attach a component, like a diode.
I decided to only use 3 V from the SG, as this is enough for even LEDs, but not enough to blow up 3.3 V ICs. With this change, I had to go with a 47 Ohm resistor between the SG and Ch 1. I set Ch1 (X) to 500 mV/div to get more resolution on the voltage knee for diodes. I set Ch2 (Y) to 50 mV/div to keep the trace on the screen, with the voltage and resistor I am using. The 200 us that you used still works fine.
My mistake. I forgot that the sinewave is 5 Vpp, not RMS. At 5 V, it wouldn't work with a blue or white LED.
Thanks for posting about your version. It integrates very nicely with the Owon scope.
I hadn’t seen that particular video before, I looked at a couple of other similar ideas though.
I own an octopus tracer and a couple of real scopes, so my use case for this wasn’t to replace those. Nor was it to even attempt to replicate the increased functionality that us possible when you have PSU/transformer to play with.
Rather i was looking at what was possible using just the built in functions, specifically not needing extra cables or a psu. Being a portable scope, it seemed most useful to be able to use the tracer adapter without then needing power or carrying a lot of extra pieces.
This way it can be used not just mobile but also when operating isolated from mains ground is important.
Also as it seems like a lot of beginners might have the HDS as their first and only scope, and likely not also own an external sig-gen, so it should work for them also.
As it turns out though, you can separate it from the owon, connecting X and Y with bnc cables, and use an external sig-gen to provide a 12V or greater sine and you can then view zeners above 5V etc also.
I am thinking of adding a dedicated bnc for that on the banana side with a switch to selectand a higher value series current limiting resistor.
btw,if you want to use the enclosure I found that almost exactly matches the owon dimensions, you can get it from Amazon or at least get the specs from the listing…
https://a.co/d/9SRdW1Z (https://a.co/d/9SRdW1Z)
and bnc couplers from Amazon come in sets of 5 cheap, they are made of crappy pot metal but saves me keeping 3 of my real ones in the a kit that’ll only get used occasionally
https://a.co/d/5z3ZSV2 (https://a.co/d/5z3ZSV2)
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Yes, the dimensions of that box are just about perfect. I measured my scope earlier, and came up with pretty much the same dimensions. I think I'll 3D print a box, as at audio frequencies, a metal box is not needed.
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Has anyone figured out exactly what the HORizontal Refresh High/Low mode does? The manual simply says:
Set the refresh rate to "High" or "Low".
It seems to also be a persistence on/off control. Any idea how many frames of persistence is enabled in High mode? Is it timebase dependent?
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Has anyone figured out exactly what the HORizontal Refresh High/Low mode does? The manual simply says:
Set the refresh rate to "High" or "Low".
It seems to also be a persistence on/off control. Any idea how many frames of persistence is enabled in High mode? Is it timebase dependent?
It seems to me that it increases the update of the waveform on the display.
if you send a swept signal to it, you can see that the amount of rising edges increases, but so does the thickness of the line.
It's not similar to persistence at least, I tested it on my Micsig with the lowest setting of 100ms and the two signals looked different.
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Here's an example of what I see when looking at CANbus with Refresh set to High and then Low:
[attachimg=1] [attachimg=2]
The Refresh=High seems to have a fraction of a second of persistence. When stopped, if I shift the waveform left/right, the extra overlaid waves disappear and only a single trace remains (just like the Refresh=Low example)
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This is the refresh rate of the screen.
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Hello everyone, our oscilloscopes have pretty decent software. Need help with code
https://github.com/seritools/owowon
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Thanks, yeah, no new firmware available from farnell's site. i got this from a contest, so it seems no warranty, which sucks, I'll look around and see if the owon firmware is fully compatible. The board and everything inside just carries the owon part numbers, so the hardware should be the same, but who knows if if will recognize the owon firmware without any fiddling.
Thank you
That's a good question, because multicomp reduce the memory in the 242 and 272 series to 6k for some reason?
The Owon firmware is a bit tricky, there are multiple hardware and software editions.
My 272s is V3 and if I see correctly they are already at V6. |O
If you simply have an Owon, you can see its data in the menu item System/System/F4/About.
You can use the Version number to get the latest firmware from the owon site.
If multucomp specified its own numbering, it can be difficult.
It might help to identify if you share the version number and production date from the board.
element14 replaced my defective unit. the new unit shows V6 for firmware and it is also a newer hardware revision. one thing i'm not happy with with the replacement unit is that channel 2's vertical accuracy is significantly off in the higher voltage range, not unusably off, but enough that it bothers me. a 16vpp signal reads 15.6 on channel 2, and reads 15.92 on channel 1. that's about 2.5% from what it should be, so still within spec, but still annoying to see, especially when the other channel reads much closer to the actual value.
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hey, a got the hds272s. hw version 2.1 and software 7.2. Does anyone know if there is a newer firmware for this one?
thanks