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How do you count the frequency of a booloen signal?

Hi, I'm new to LabVIEW, so I suspect this is propbably quite a simple problem.

 

I'm developing an optical tacometer for a model gas turbine engine. I have a boolean signal in labview switching between 4 and 26Hz. I need a live readout of the frequency of this signal.

 

Does anyone know how I could do this? Any help would be really appreciated!

 

Many thanks

 

Will

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http://forums.ni.com/ni/board/message?board.id=170&message.id=481337

Rich Roberts
Senior Marketing Engineer, National Instruments
Connect on LinkedIn: https://www.linkedin.com/in/richard-roberts-4176a27b/
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