My DAQmx Log File is Not Showing All of My Data

Updated May 3, 2018

Reported In

Software

  • LabVIEW Full
  • LabVIEW Base
  • LabVIEW Professional

Driver

  • NI-DAQmx

Operating System

  • Windows

Issue Details

I am acquiring data with the DAQmx functions and writing it to a log file. When I open the log file, I'm not seeing all of my data. How do I resolve this?

Solution

A possible cause is that you have the 'number of samples per channel' of your DAQmx Read function wired up (see below). 
 
This will limit the number of samples that DAQmx Read is pulling into LabVIEW memory from the PC buffer. In the first case in the image, the DAQmx Read will only read and display 10 samples.

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