07-24-2006 12:40 PM
07-24-2006 01:46 PM - edited 07-24-2006 01:46 PM
Is it possible that you are specifying "-1" as the number of samples to read with each DAQmxBaseReadAnalogF64()? The behavior you describe (2 samples being returned) seems to point to the behavior that is often seen with that setting that was incorrectly documented in some early versions of NI-DAQmx Base. I would encourage you to upgrade to NI-DAQmx (which fully supports your device) and check out the CVI example that installs with that driver at C:\Program Files\National Instruments\CVI80\samples\DAQmx\Analog In\Measure Voltage\Cont Acq-Ext Clk-Dig Start
Hopefully this helps-
Message Edited by Tom W [DE] on 07-24-2006 01:47 PM
07-24-2006 06:35 PM
I was indeed specifying '-1' as the number of samples to read. I've switched everything over to DAQmx and it seems to be behaving more nicely. Thanks for the help.