I am using a counter task to measure the frequency of an incoming pulse train. What is the maximum frequency (Hz) that I can measure and what is its accuracy (ppm)?
For low frequency measurements with one counter, you measure one period of your signal using a known timebase (usually the on-board clock). The maximum frequency you can measure, as well as its accuracy, will depend in the card that you have. Follow the next steps to understand how to get this information:
Image: Low Frequency measurement with One Counter. Source: X Series User Manual.
Note: Find more information about the meaning of these specifications here: Specifications Explained: NI Multifunction I/O (MIO) DAQ
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