New Hantek DSO2X1X models?

[petr_cz]

I already tried new dso3kb_20220118 firmware but the bug with time zoom is not fixed yet.
I don't understand why firmware doesn't contain release notes about fixes?!

[DavidAlfa]

Don't buy this crap. Seriously.
I've trying to follow 50MHz signal pulses lasting 50-100us.
Larger Time division than 10-5us shows nothing or garbage.
In the zoom view, you can't scroll through the whole screen, so another useless feature.
SPI decoding keeps failing. No *** way to decode anything.

*** Hantek designers. Never again. Not even free, damn.
This scope is just crap.

[raphaelCoelho]

Hello friends, my name is Raphael, I speak from Brazil!
I have been working with electronics for many years. Today I have a tektronix tds1001b oscilloscope, and I am thinking of buying one  hantek, it seems to be a great value for money.
Reading this and other interesting threads here, I saw that it has a lot of problems.
Still I ask:
Is it worth buying Hantek?
Would it work better than my old tektronix?
Thank you very much!
Best regards!!!

[raphaelCoelho]

DavidAlfa, i was asking the question above when you posted. Apparently, I'll stick with the old tektronix...

[masta_k74]

There is a new Firmware (dso3kb_20220118.upk) on official Website.

[Maxie]

There is a new Firmware (dso3kb_20220118.upk) on official Website.

Thanks masta ; Anyone knows what it fixes?
I really don't understand why they are uncapable of creating a short TXT file for the release.
Wungshang said he will notify us when there is a new FW that fixes our memory spikes.
I haven't been notified. Have you?

[raphaelCoelho]

Does anyone know if Hantek will incorporate the bode plot feature, as these oscilloscopes have a built-in function generator?

[masta_k74]

@Maxie
I was not notified either. I tested it very briefly this morning and everything looked fine. I will test extensively tomorrow morning.

[Algoma]

There is certainly the hardware for it, and plenty of resources to have bode plotting features.

Likely they left it out to prevent overlap with their other scopes. Perhaps there are left over references to the missing feature left in the firmware.

As the onboard software allows remote control through USB, I'm curious if a Virtual USB interface in the onboard Linux could take control of the scope's firmware.

[.rpv]

Someone published a new bug on the eediscuss forum about the CSV export feature saving the incorrect time...always the same:

https://www.eediscuss.com/forum.php?mod=viewthread&tid=15927&extra=page%3D1

I checked on a test I did a few time ago I didn't noticed this 
But yes, there is a bug there:

Code: [Select]

Time [s],CH1 [V]
4.000000e-09,-4.560000000000,
4.000000e-09,-4.560000000000,
4.000000e-09,-4.560000000000,
4.000000e-09,-4.560000000000,
4.000000e-09,-4.560000000000,
4.000000e-09,-4.560000000000,
...
4.000000e-09,-4.640000000000,
4.000000e-09,-4.640000000000,
4.000000e-09,-4.640000000000,
4.000000e-09,-4.560000000000,
4.000000e-09,-4.560000000000,
4.000000e-09,-4.560000000000,
4.000000e-09,-4.640000000000,
4.000000e-09,-4.560000000000,
4.000000e-09,-4.640000000000,

[.rpv]

Does anyone know if Hantek will incorporate the bode plot feature, as these oscilloscopes have a built-in function generator?

Hi, do you mean a software to create your own waveforms for the function generator?, if so yes, the supplied software includes this function.

[raphaelCoelho]

Hello .rpv, I am referring to the bode plot.
An example on a keysight oscilloscope:



Watch the video starting at 4:44

[.rpv]

Hello .rpv, I am referring to the bode plot.
An example on a keysight oscilloscope:



Watch the video starting at 4:44

Ehmmm, no, that looks like a VNA stuff, but I'm not really an expert on this matter, also the scope on the video it's a 1k usd+ scope, you're probably asking too much for this scope.

[tautech]

Hello .rpv, I am referring to the bode plot.
An example on a keysight oscilloscope:



Watch the video starting at 4:44

Ehmmm, no, that looks like a VNA stuff, but I'm not really an expert on this matter, also the scope on the video it's a 1k usd+ scope, you're probably asking too much for this scope.

That certainly is Bode plot/FRA traces of amplitude and phase and certainly you can do these in scopes today with scopes with these features. VNA's can do this too but some are more limited to higher frequency work than is possible in a scope.
Here's one I did with the SDS1104X-E on a bandpass filter when Siglent added this feature:
https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg1435854/#msg1435854
Later additional channels were used measuring different parts of the filter:
 https://www.eevblog.com/forum/testgear/siglent-sds1204x-e-released-for-domestic-markets-in-china/msg1436912/#msg1436912

Since those days when it was added into the 4ch X-E scopes it has been reworked for even better results:
https://www.eevblog.com/forum/testgear/siglent-sds1x04x-e-bodeplot-ii-(sfra)-features-and-testing-(coming)/

[raphaelCoelho]

Well, they already have the hardware they need to make the bode plots. It doesn't cross my mind that they don't have that option...

[masta_k74]

As far as Bode Plots is concerned, I would also like it, but the guys at Hantek can't even get a handle on the countless bugs. Should they really integrate more functions?

@Maxie:
I have now tested it again more extensively. It seems to me that this problem occurs less often now (i.e. in fewer measuring situations). But it has definitely not been completely eliminated. Too bad, otherwise this oscilloscope is really great for this price.

[popy5]

I have problem with DSO2D10. The oscilloscope freeze after zooming horizontal domain with displayed cursors. I tray following steps many times with same result.

1. Connect signal on Chanel 1
2. Set the cursors A and B in mode Track
3. Zoom the horizontal axis by clicking Sec/Div button
4. Change the time(horizontal) range, after zoom the cursors are not in window (out of display on zoomed part)
5. Click to clicking Sec/Div button, try to exit
6. The device doesn't response, display is frozen

I have DSO2D10 have with SW 20220105

Do you also have this problem or is it only my own problem?

Edited: The cursor type should be in mode Track, cursor in mode Manual works correctly

Ok, I've contacted again with Hantek support, related the issue "Display is frozen and the oscilloscope doesn't response with cursor mode to Track" (originally posted by @petr_cz), and they have responded by sending me a new update (dso3kb_20220124.upk) that fixes it.

I have uploaded the file to David Alfa's GDrive inside the folder 'Writable (anyone can drop their files here) > popy5_dso3kb_20220124':


Direct link: https://drive.google.com/drive/folders/18N1eQCTghcII_PdQUem_CWvtxvnFD_fZ?usp=sharing

[petr_cz]

I have problem with DSO2D10. The oscilloscope freeze after zooming horizontal domain with displayed cursors. I tray following steps many times with same result.

1. Connect signal on Chanel 1
2. Set the cursors A and B in mode Track
3. Zoom the horizontal axis by clicking Sec/Div button
4. Change the time(horizontal) range, after zoom the cursors are not in window (out of display on zoomed part)
5. Click to clicking Sec/Div button, try to exit
6. The device doesn't response, display is frozen

I have DSO2D10 have with SW 20220105

Do you also have this problem or is it only my own problem?

Edited: The cursor type should be in mode Track, cursor in mode Manual works correctly

Ok, I've contacted again with Hantek support, related the issue "Display is frozen and the oscilloscope doesn't response with cursor mode to Track" (originally posted by @petr_cz), and they have responded by sending me a new update (dso3kb_20220124.upk) that fixes it.

I have uploaded the file to David Alfa's GDrive inside the folder 'Writable (anyone can drop their files here) > popy5_dso3kb_20220124':


Direct link: https://drive.google.com/drive/folders/18N1eQCTghcII_PdQUem_CWvtxvnFD_fZ?usp=sharing

Thanks for FW dso3kb_20220124.upk, i can confirm that freezing is fixed. The remaining problem is cursor malfunction in zoomed window when cursors go out of zoomed area during zoom in 3x or more. The cursors are moving in main signal, but are stuck on left edge of zoomed signal and don't move.

[masta_k74]

I will only use this oscilloscope until I buy a Siglent SDS1202X-E.
After that, it will go into the cupboard as a reserve device...
The service of this manufacturer is getting on my nerves. 

[LZ4TU]

It's a sad situation, when these models came on the market more than a year ago, they was very promising. In fact their Chinese programmers are trying to fix reported bugs, but when they are in hurry, maybe not on this model only, things mess up and this lead customers to dissatisfaction. Unfortunately this guys from Hantek are not enough open minded to accept the open source model. If the firmware was open source it would be great, there are so many talents between us, that DSO2x1x could become the perfect cheap oscilloscope. But when something great and open sourced comes from Europe or US, like the Arduino and thousands other, the Chinese factories and sellers on ali, banggood and ebay are happy. These days even Microsoft accepted the open source model, but our Chinese comrades are a way behind.

So everybody is welcome to give a vote on this poll:

http://poll-maker.com/poll4140993x39d44050-129

The results will be sent to Hantek support with a covering letter. Who knows, maybe if this can't be the perfect oscilloscope, at least  can become the perfect R&D device.

[radud5]

I succeeded reduced the consumption almost with 1W by replacing the 2x SS310 diodes on the +8V line with a FERD40L60C diode and using tantalum capacitors on the opposite side of the components.

[Maxie]

Cool radud5, I love modding.
Would you please explain deeper how and why, so we not only copy you but learn something as well?

[radud5]

Diode SS310 have 0,85V for 2A and FERD40L60C have 0,3V for 5A. Total power consumption decreased from 9,9W to 8,9W for 230V/50Hz input. This 1W power is it is released in the form of heat from older diode SS310. The + 8V line voltage is also used to power the -8V converter.

Now I have noise problem. What does a 100mV / 100kHz signal look like to you on 10x probe?
What is the source of the noise?

[eevbstedt]

I'm guessing this is relevant?

ST - FERD technology outperforms Schottky diodes [2018-07]
https://www.st.com/resource/en/flyer/flferd0718_lr.pdf

[daf0x]

Looks Hantek pulled the latest update 20220212 / 20220210 (why do they always have two different dates for each update??) as I'm getting a 404. Either that or they managed to bungle their release procedure...
Did anyone manage to grab it and/or know why it was pulled?