DAQmx gives higher analog value than traditional DAQ

[praveenda@gmail.com]

Hi

I have successfully ported an traditional DAQ application to DAQmx. But I am facing a problem in the value of analog data read in DAQ and DAQmx.

Application uses the NI-60123 PCI card and traditional DAQ used DAQ_Op() to read the analog data.
In DAQmx I created an analog voltage channel and read the samples using DAQmxReadBinaryI16.

I a getting data slightly higher than the data from traditional DAQ.

What is the reason for this value difference? Is it becacuse that the DAQmx is more accurate than Traditional DAQ?

praveenda

[Mark_SAI]

Hello,

This article may provide some insight into a possible reason for your data readings.

Hope this helps!