DSO4202C Pass/Fail Test Failed

Sead

Support needed!

The Pass/Fail test on my DSO4202C shows a large amount  (more than. 90%) of the failed frames.



System Information:
Model: DSO4202C
SW Version3.50.0(190613.0)
HW Version: 1020xffffa001

I need solution for this issue.

Sead

Can someone please advice me on how to contact Hantek Product Support?
I need urgently solution for pass/fail case as per above.
Thanks Sead

Sead

amy replied at 2019-11-5 14:53
Please upload a video to study.

Thanks for your reply. Please instruct on what kind of video you expect.Kind Regards, Sead

Sead

amy replied at 2019-11-7 16:40
Engineers want to see the dynamic video of waveform jitter.

Please find enclosed short movie. If you need longer sequences,
please provide upload link. Discuz!  does not allow longer files than
1000 k.Kind Regards /Sead

Sead

amy replied at 2019-11-9 10:26
Please give me the serial number of your scope.

Here you are:

T 1G/049 005857

Kind regards, Sead

Sead

amy replied at 2019-11-14 16:12
Our engineer will try to modify, please wiat for some days.

Thanks for informing me. Looking
forward for a solution.

Kind regards,
Sead

Sead

wangshuang replied at 2019-11-23 15:24
The lastest firmware has been released to the Official website,please download and update.
http: ...

Many thanks.

I downloaded "dso4kc_func_hantek_dso_dso4202c_20191123.0.up" and performed firmware upgrade, but no improvements. The Pass/Fail Test delivers now 100% Fails. To me it seems like there is a strong internal amplitude modulation of input signal with a quite high frequency. This probably distorts input signal and causes amplitude instability. This is a hypothesis onlu, you will certainly know better what t is and how to resolve the problem. Looking forward to your quick reply.

Kind regards, Sead

Sead

wangshuang replied at 2019-11-28 13:46
did you set the RULE, named "P/F Mask" in the second page of Pass/Fail function? Could you please  ...

No, I did not set the RULE. Please find attached the movie.

Regards, Sead

Sead

amy replied at 2019-12-12 15:33
Sir, I'm sorry, engineer doesn't have a good solution to solve the problem of high frequency signal  ...

Hello Amy,
Sorry to hear that. The Oscilloscope is new and with the valid guarantee.
What is your proposal? I expect that Hantek as a respectable company
that takes care of customers will replace this faulty unit.

Kind regards
Sead

Sead

Hello there,
Please advice on how to proceede with the oscilloscope still being under the guarantee
and having the serious fault that you can not fix?

Best regards,
Sead