Hi,
I need more information to be able to answer this question.
What type of DAQ board are you using. What version of LabVIEW are you using? What version of NI-DAQ do you have and are you using traditional NI-DAQ or DAQmx (or the DAQ assistant)?
Best regards,
RikP
Applications Engineering
National Instruments
Rik Prins, CLA, CLED
Software Development Engineer