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Hardware triggered digital acquisition

Hi,

 

I would like to measure frequency of rotation of an encoder after let's say bit number n of a known digita waveform is constant for 3 seconds. I assume I need to use counters to measure frequency but I don't know how I should use the trigger signal. Is there any example that can help me on this 

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Hi tintin,

 

What kind of encoder are you trying to measure?

 

If the output is just a standard pulse train of varying frequency, you can use DAQmx functions to measure it.

 

Here's an example that will do just that.

 

https://decibel.ni.com/content/docs/DOC-13039

 

Good luck!

Josh E
Applications Engineer
National Instruments UK & Ireland
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