6232 cards interfere with each other

[Eric_G]

I have 2 6232 PXI cards installed in slots 2 & 3 in a PXI 1042 chassis.  It appears that the card in slot 2 is interfering with the signals in slot 3.  I am seeing 7 volts on some NRSE channels on the 6232 board in slot 3 when viewed with NIDAQ sw, even though I am physically reading 0 volts at the card terminals.  I am not reading any unusual / unexpected voltages on any of the terminals of the card in slot 2   If I unplug the cable to the card in slot 2, the card in slot 3 appears to read correctly again in NIDAQ.  Any thoughts on what could be causing this?  Thanks!!

[aNIta B]

Hi Eric,

      That's definitely unusual behavior that you're seeing. When you say you are using NIDAQ software- do you mean that you are viewing these results from the test panel in Measurement and Automation Explorer, or are you refering to code written with the DAQmx driver?  Additionally, I would be curious to know if you still see the same behavior if you separate the two cards by one or more slots (so, putting your cards in slots 2 and 4).  And finally- what kind of signal are you reading in on your card in slot 2?  Can you please give a little more detail of your test setup and what you are measuring?  Thanks!