Hi, I got ds0138 I use it with no problem for while. But yesterday I get some bad measurements with no clue.
If I turn it on .. I instantly get GND around -1,4 V and if I connect GND to GND and Probe to 5V line .. I get just about 1,4-1,6 V measurement. Did I have some bad setting or it is error ? I try update to latest firmware and measure all voltage on board by troubleshot guide but all seems ok .. Maybe I'm just stupid and do not know how use DS0138.
Thanks for help