Hello,
There is a spark when I connected O'scope Ground Probe to AGND pin on the circuit board (DUT). I then measured between AGND and chassis GND is about 28Vac by Fluke meter. So there is a float voltage between those points.
In order to avoid that spark, can I put a 2-pronge outlet from O'scope input voltage to isolate the ground? If I want to keep the 3-pronge on the outlet, what should I use on my Probe to avoid the spark?
Thanks for your time
There is a spark when I connected O'scope Ground Probe to AGND pin on the circuit board (DUT). I then measured between AGND and chassis GND is about 28Vac by Fluke meter. So there is a float voltage between those points.
In order to avoid that spark, can I put a 2-pronge outlet from O'scope input voltage to isolate the ground? If I want to keep the 3-pronge on the outlet, what should I use on my Probe to avoid the spark?
Thanks for your time