When I acqure data continuously (analog trigger), the program just stop acquiring itself.

[DrObb]

What could be wrong? not enought buffer? or did i set some of the property wrong. I can only do continuous DAQ at a low sampling rate. We need at least 1 MHz sampling rate. Is it possible to do that? Also, what is the relation between sample and sample rate. It seems like it can do the job when I set certain values of sample and sample rate. If I decrease sample or increase sample rate, the program just stop acquiring data.

[Chris Matthews]

This forum is for discussing Measurement Studio for Visual C++. Your question is related to Multifunction DAQ and should be posted here. It doesn't sound like you are checking for errors. Most likely, you aren't keeping up with reading from the board quickly enough and you are getting an error returned from one of the functions telling you this. Check for error codes returned from the functions and you can look up the error in the NI-DAQ documentation.

Best Regards,

Chris Matthews
National Instruments