PXI-6704 in parallel with resistance measurement

[Mellobuck]

Hello,

I am performing two separate circuit analysis procedures. First I want to supply two pins with current and measure the circuit response elsewhere, and second I want to test the unpowered total resistance between those two pins. If I have a PXI-6704 current output wired to the pin pair, and set to 0 Amp output, will it interfere with the measurement of resistance at those pins (as a paralell resistor would) or will it exclude any signals and appear as an open circuit?

I can use the PXI switching to connect and disconnect the DMM for measurement, but the test specifications require no current supplies through the switch.

I do not have the hardware at-hand, I know that would be the quickest test. We are designing the circuit test fixture in parallel with the PXI testing chassis.

Thank you,

Mello

[Margaret F. · Accepted solution]

Hi Mello,

So, the output impedance of your card is 1GOhm, so unless what you are measuring is huge, then this shold appear as an open circuit. Hope this helps!

6704 User Manual