Simultaneous Differential and RSE Voltage Measurements with LabVIEW 8.2 and NI USB 6259

[hmcmillan]

I am trying to automate some voltage measurements using LabVIEW 8.2 and the NI USB 6259 DAQ device.  I want to measure both differential and RSE voltages simultaneously.  I know how to take these measurements individually already, but I have unsure how to take both measurements simultaneously.  Does anyone know how to acomplish this? 

[Sandra_T]

Hello hmcmillan,

Yes, it is possible to measure both differential and RSE voltages simulatneously using one analog input task. The task will have one sample clock which will determine the number of samples to take and also the sampling rate. You will have multiple DAQmx Create Channel vis grouped under one input task.

Take a look at the following related discussion forum posting:  DAQmx task won't work in LabVIEW, but works fine in NI-MAX
Here you will find more discussion and some example code. I hope this information helps.

Regards,
  Sandra T.

Applications Engineer | National Instruments