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- Tue Jul 04, 2017 6:11 am
- Forum: DSO 112 & 112A (Coral)
- Topic: Negative voltage on input
- Replies: 2
- Views: 7757
Hello everyone. Please, excuse my poor English. :roll: I have a DSO112 that sometimes after power it on the input just showed a maximum negative signal, independent of scale. After some fiddling, it worked again as normal. But now it’s doing permanently, always negative both on AC and DC coupling bu...