When I acquire data continuously (analog trigger), the program just stop acquiring the data. WHat could be wrong?

[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." I am using Component Works with Measurment Studio, programming with Visual C++.

[Filipe A.]

Hello;

Firts of all, you need to double check the specification for Sampling Rate for that board of yours. Scan Rate is the rate which all channels will be acquired. So, if you are using 8 channels, the rate per channel will be the Scan rate/8 channels.
Try out one of the NI-DAQ shipping examples and see if you can achieve the board specs as far as Scan rate. If you can't, there is something wrong with your board.
Hope this helps.
Filipe