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DSO5102p. Channel marker does not match the signal.

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Post time 2019-1-31 05:36:37 | Show all posts |Read mode
Edited by easa at 2019-1-31 06:30

When both probes are removed, on channel 1 the channel marker does not correspond to a signal with a sensitivity of 10 - 1 mV / div.  


After self-calibration or an hour-long warm-up, everything is fine, but it disappears if the oscilloscope is reset.

On channel 2, the marker and signal always are match up.



What could it be? Tell me please. I can solder, there is equipment.






















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Post time 6 day(s) ago | Show all posts



half an hour after starting up, and then make it self-correcting, hope that can be helpful.

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 Author| Post time 6 day(s) ago | Show all posts
Edited by easa at 2019-2-14 15:40

Thank you, but as I already wrote:
After self-calibration or an hour-long warm-up, everything is fine, but it disappears if the oscilloscope is reset.

calibration after warming up, helps before rebooting. Then again, half an hour or an hour you need to wait until the mark is aligned with the signal. It seems that the thermal compensation of channel 1 is not working well.

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