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determine phase difference between a reference and measurement signal

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Hi,

 

I am using a PXI-1000B with two PXI-6133 DAQ cards and I need to measure the relative phase difference between a reference sinusoid, acquired on one card, and a measured sinusoid aquired on the other card.  So far my idea is to simply acquire N samples of both signas as waveform data and then compare.  My problem is that I see a way to extract the relative phase information.  How might I do this?  Is there a better way of achieving this end?

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Hi Glen,

 

Here is a  post on the NI community that sounds like what you want to do.

Regards,
Jim Schwartz
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Hey GlenS

 

Check this link. Use it a subVI pass one input as the input from the DAQ card and another your reference wave. It should work.

 

Good luck 🙂

 

-lab

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Awesome, thankyou.
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