Working on high with home made circuitry is very dangerous. It is better to use a special crafted instrument for this https://nl.rs-online.com/web/p/multimeter-test-leads/4428294/ You can attach this to the picoscope and measure over long periods of time. Thanks for replying. I already have that hi...

We are trying to measure a 2V signal across a current resistor at -17kV from ground. HV_Isns.jpg There is no way we can put the resistor on the ground side. We can measure this signal with a multimeter, taking care to keep it isolated. But can anyone thing of a trick to log data from it for a long p...