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AI Differential Mode software settings

I need to use AI differential mode on NI 6014.
 
On the hardware side, I connect the two ends of the differential signal to pin AI0 and pin AI8.
 
On the software side, I am using C API provided by NIDAQmx on Linux. I looked through the C API functions and I did not find one for setting the AI differential mode.
 
My questions are:
1) Do I need to configure something at all on the software side? 
2) Or no software configuration is actually needed and the data from "Dev/ai0" is already the AI differential signal that I need.
 
Thanks a lot  
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Hi

In NI DAQ( legacy), there was AI_ configure function call to do this.

But I have not seen what is its equivalent in DAQmx.

Do this. Find the examples mentioned in this link and you might get a code that will help you find the equivalent function call in DAQmx

also do search in development library

Hope this helps

Regards

Dev

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Hi All-

The "terminalConfig" parameter of the DAQmxCreateAIVoltageChan() function selects the AI reference configuration to use.  Allowable values for the NI 6014 are as follow: 

  • DAQmx_Val_NRSE   Nonreferenced single-ended mode 
  • DAQmx_Val_Diff   Differential mode 

Hopefully this helps-

Message Edited by Tom W [DE] on 07-25-2006 09:34 AM

Tom W
National Instruments
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Thanks! Problem solved Smiley Tongue
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Hi apd-

Glad I could help- good luck with the rest of your DAQmx experiment.Smiley Happy

Tom W
National Instruments
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