DSO4102c Error displaying the trigger.

pavlenkoa · Post time 2020-4-16 23:26:21

At any frequency, when switching the sweep, there is a delay in the display of the signal by 550 ns from the trigger line to the sweep value of 2 μs. Further switching from 800 ns or less eliminates the error.

It can be seen that after 800 ns - everything is perfect.
I hope for an answer. Thanks in advance.

wangshuang · Post time 2020-4-20 16:56:42

Please perform self-calibration, disconnect all probes and cables from CH1, CH2 and EXT.TRIG.

pavlenkoa · Post time 2020-4-20 23:22:20

Edited by pavlenkoa at 2020-4-20 23:23

wangshuang replied at 2020-4-20 16:56
Please perform self-calibration, disconnect all probes and cables from CH1, CH2 and EXT.TRIG.

This is the first thing I have done. Plus reset all settings to default. This occurs on both channels equally and independently of the frequency of the input signal.

Model: DSO4102C
sw version: 3.50.0(200410.0)
hw version: 1020xffffa000
serial number: T 1G/049 006360
boot count: 113
upgrade count: 2
lcd.front.ts: 3.0.0

wangshuang · Post time 2020-4-26 16:51:13

I have feedback your problem to the engineer, I will reply you after processing.

FSC · Post time 2020-4-30 21:06:23

Hi,
I observed exactly the same behaviour on my DSO4072: At 20us timebase everything is ok. But then from 8us down to 2us I have this offset. And at 800ns everything is fine again. Seems that the "one digit us timebase" have a problem...

pavlenkoa · Post time 2020-5-1 02:49:26

FSC replied at 2020-4-30 21:06
Hi,
I observed exactly the same behaviour on my DSO4072: At 20us timebase everything is ok. But then ...

want to upset you, but the same picture is observed at 20 us, if you only increase it ...

Надеюсь инженеры исправят эту системную ошибку.
I hope the engineers fix this system error.

wangshuang · Post time 2020-5-12 09:51:27

pavlenkoa replied at 2020-5-1 02:49
want to upset you, but the same picture is observed at 20 us, if you only increase it ...

Please take a photo of System Information: Utility->F1.

wangshuang · Post time 2020-5-12 14:28:55

Please use this firmware to try:
https://fil.email/vDsqXuI8

pavlenkoa · Post time 2020-5-12 23:50:34

wangshuang replied at 2020-5-12 14:28
Please use this firmware to try:
https://fil.email/vDsqXuI8

Thank you so much! Installed the update. Here are the results:
In normal mode, everything returned to normal. Many thanks.
Now there is no delay.

But in dual-window mode, the fault remained. Nothing changed. Perhaps you need some more where to modify the software. Thanks for the support!

pavlenkoa · Post time 2020-5-13 03:19:02

Here is another supplement. The error disappeared with a memory depth of 4k. With a memory depth of 20k and 40k, it remained!

DSO4102c Error displaying the trigger.

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