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DC voltage measurement on PNA-X

Question asked by kozy on Dec 3, 2007
Latest reply on Dec 3, 2007 by kozy
I noticed that the PNA-X can measure DC voltage trough "Power I/O" connector at rear panel.  It seems to be very effective, for instance, for the direct evaluation of the PCE of the rectifier.  I have a question regarding the connections to the "Power I/O" connector.

When measuring DC voltage with AnalogIn1(AI1) terminal (Pin7) on the "Power I/O" connector, for instance, should GND terminal of the DUT be connected to ACOM terminal (Pin5) or to GndSense terminal (Pin6) ?  What's the difference between ACOM and GndSense terminals?