I'm using the new NIDAQmx.h header file and I'm trying to read data from the USB-6009 device. Can someone help with this. The header file doesn't have a lot of commenting, so I'm not sure which function to use.
Have you tried looking in the NI DAQmx C reference help? It is located at All Programs >> National Instruments >> NI-DAQ folder of the start menu. It includes documentation for all of the functions that are available. There is also a good Development Zone article on using DAQmx in text based languages here:
