Electronics > Beginners
SDS1104x-e AC Coupling offset
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BrianHG:
Have you done a scope self-calibration recently?  Many DSOs have one buried in the utility menu somewhere.

On my old Tektronix, I've done a scope self-calibration once with an active probe in one channel, and, there was a DC offset error on my channel 1 until I redone the scope self-calibration.  The self calibration was originally needed since the DC offset drifted out of alignment by around 0.3v over a year of use.

The DC offset would still show in AC coupled mode since this drift is after the DC probe filter in the scope electronics.
Steamer:

Calibration was done several times, and that didn't make a difference.

The problem isn't resolved yet. As far as I know Siglent is looking into it, I've opened a support case.

Emile
Steamer:

They replaced my faulty SDS1104X-E with a new one. (I only had it for about a week)

This one is working as expected. Thank you for the service Batronix/Siglent.

Emile
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