Problems with GND

Instruments PC Oscilloscopes and Recorders
1

Hello.

I have a problem with the GND of PCSU1000.

The DC source has the 0V joint to GND. The same GND of the computer and the oscilloscope (all linked via USB).

I can’t measure the polarity of the source nor the voltage inside a circuit, becase the point where I conect the GND terminal of the oscilloscope get 0V.

How can I solve this?.

Thanks.

2

You may use the CH1 and CH2 probes to measure a “floating” voltage difference.
Keep the GND leads of both probes connected to the common ground.
Connect the tips of the probes to the two circuit points of interest. Use Math function “CH1-CH2” to view the waveform.
Also you can use the View menu option “Waveform Parameters” to display the voltage levels.

3

Thanks again