determine phase difference between a reference and measurement signal

[GlenS]

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?

[jschwartz]

Hi Glen,

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

[lab_boy · Accepted solution]

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

[GlenS]

Awesome, thankyou.