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I recently got my Hantek 2C42 and found out that in Single trigger mode scope just randomly triggers on nothing, showing a flat 0 V line or a voltage spike.
Later i dicovered that it happens even if coupling is set to GND, so i tried to take a better look at what's happening using roll mode and saw distinct voltage spikes happening randomly.
And there is another problem in roll mode, when channel coupling is set to GND, channel trace lifts up independent of vertical scale. So, for example at 100 mV/Div trace lifts to 52 mV, at 1 V/Div trace lifts to 520 mV and so on.
But when AC or DC coupling is selected, trace stays near 0 V.
I would like to know why this is happening and how to fix it.
I assume this is due to errors in firmware and hope it will be fixed soon.
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