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Correlated Digital Inputs

Hello All,

I am using DAQ PCI 6221 card for analog inputs as well as for analog
outputs....but I want to know that how can I use correlated digital
inputs for motor speed measurements...as I have never done any kind of
motion control or speed measurements nor I have used correlated digital
inputs , so some senior pros please put some light on my problem or
provide me some link for the related problem.

Thanks & Regards
James

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I assume as you are looking at digital inputs that we are talking about some form of encoder.

If we are then, I suggest a counter rather than a digital input. Check out the Counter/Timer forum if you get into trouble but the examples are pretty cool so they should get you going.

Counter/Timer forum
http://forums.ni.com/ni/board?board.id=40

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