[solved] Rigol DSO1104Z 0V line not on 0V

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PsySc0rpi0n

Joined Mar 4, 2014
1,755
Hello.

I have a Rigol DSO1104Z scope and today I updated the firmware to the latest version. After that, if I attach the gnd lead to the scope probe itself, the voltage line should be right on top of the screen mid line, right?
But the voltage measuring line is around 400mV ~ 480mV above it. The coupling is DC, probe and setting are at 1x.

This is a screenshot of what is happening
DS1Z_QuickPrint2.png



What could be the problem?

Edited;
With Bandwidth Limitation (20Mhz) the 0V line stays above the screen mid-line. If I turn off the Bandwidth limit, the 0V line lies a bit below the screen mid-line!


Edited 1;
I just performed a self-calibration test and it's back on track!
 
Last edited:
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