How to measure and generate a frequency signal through the digital channels on the NI daq card
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In the daq card instruction manual, there is a function of this card called 'counter', which can be used to measure and generate the frequency signal. But I have no idea on calling this function from matlab. Could you please let me know if it is possible and how to use it? If you can let me have an simple example, I would be grateful.
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Mark Shore
2011-2-13
National Instruments makes many DAQ boards. You'll have to be more specific.
And you will likely need either MATLAB's Data Acquisition or Instrument Control Toolbox, or NI's LabVIEW to interface with the board.
http://www.mathworks.com/products/daq/supportedio14005.html
http://www.mathworks.com/products/instrument/hardware/national-instruments.html
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Mark Shore
2011-2-16
Hi Yan. My NI hardware is quite different, and I'm happy for now to use LabVIEW for the data acquisition end, and then MATLAB for post-processing. The linking step I did was to rewrite large TDMS files into a binary format easily read by MATLAB. I just envisioned too many complications otherwise, and it was cheaper to purchase and learn LabVIEW.
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