Connecting analog voltage measurements to DAQs of PXI I/O modules

[martinbaumann94]

Hey together,

we would like to measure voltages with a bandwidth of up to 1 MHz, 40V by means of analog I/O module PXIe 6378.

This is the equipment we currently use for this purpose:

• passive probes such as Tektronix TPP0201 https://www.calplus.de/tektronix-tpp0201.html ,
• connecting probes to module via SCB box: https://sine.ni.com/nips/cds/view/p/lang/de/nid/210777 ,
• and appropriate 1 MOhm terminal resistances for the voltage divider of 10:1 passive probes https://de.rs-online.com/web/p/widerstande-durchsteckmontage/1649061/

We connect the probes as single-end connection with AI- and AIGND being shorted. We would like to have a isolation inbetween several analog inputs, probably a differential connection would be better.

What is the recommendation for voltage measurements with the described setup of PXIe analog modules? Which voltage probes are recommended or which alternatives for measurements with I/O modules are out there?

Thanks in advance for your help,

Martin

[VA.KI · Accepted solution]

Hello Martin,

Here you can find all information regarding on how perform measurements on this modules.

[martinbaumann94]

Thank you for your help.