OWON HDS 200 Handheld Oscilloscope w/ builtin DMM/AWG

[TrendX]

100MHz Version looks nice.

Teardown would be interesting to see if it really has 500Msps and how they did it.

[Wintel]

100MHz Version looks nice.

Teardown would be interesting to see if it really has 500Msps and how they did it.

ADC is HAD1511.

[blurpy]

ADC is HAD1511.

Interesting. Isn't that the same as the Siglent SDS1000X-E models? Sounds like a good (and expensive) upgrade.

[tunk]

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$.

[rn777]

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

[saresigi]

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

[BetterAndBetter]

"So strange that I didn't even try to describe it."

Can you make a video to describe that?

[saresigi]

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.

[giovannirat]

Same HW and firmware release.

Same wrong behavior on my HDS272s.

Hopefully we will get a firmware upgrade ......

[BetterAndBetter]

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. 

[sequoia]

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?

[saresigi]

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.

[eti]

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.

[eti]

Someone ran "Oscillofun" on it

[coromonadalix]

   loll   

[rn777]

It is fake. Parameters on screen is statics.

[eti]

It is fake. Parameters on screen is statics.

[hobbeeist]

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.

[dophuc]

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

[rn777]

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.

[hobbeeist]

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

[sequoia]

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).

[hobbeeist]

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 shows a side-port module.

[sequoia]

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...)

[tly]

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 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 - 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.