I'm tring to use Hantek6022BL to measure small values (0.01 mV), but even if probe not connected or connected to ground i can't see 0 mV on screen.
I see noise from -8mV to 3 mV.
Than i press "Menu-Utility-Calibrate" i see dialog box "Calibration", but after "Ok" nothing happens and nothing changes.
How can i fix it?
Rustem
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