Digital I/O

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Low frequency measurement with digital input



I started using LabVIEW recently and I would like to know if it is possible to calculate or measure the frequency of a digital signal (pulse train) using a regular digital input (no counter or analog input available). I have a cDAQ with an NI 9425 module. The characteristics of the pulse train signal that I'm trying to measure are: Frequency = 100 Hz, Duty cycle = 50%.


Any help or example would be appreciated.


Thank you.

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Message 1 of 3

You can capture the digital waveform and post-process it for frequency.

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Message 2 of 3

Thanks for the advice. This is the built example that worked for me.



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Message 3 of 3