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by jelinj8
Fri Dec 30, 2016 5:35 pm
Forum: DSO Shell
Topic: Trouble with calibration (C5 has no effect, bat test signal)
Replies: 5
Views: 9008

Trouble with calibration (C5 has no effect, bat test signal)

Hello, I like the scope, but I have trouble with calibration (and usage). The testing signal is OK on 3.3V, but the 0.1V square isn't at zero - it has about 3V offset (tested with a Owon 60MHz DSO). I have tracked the test signal generation to voltage divider (R16 and R31). R31 is rated in the schem...