From Saturday, Nov 23rd 7:00 PM CST - Sunday, Nov 24th 7:45 AM CST, ni.com will undergo system upgrades that may result in temporary service interruption.

We appreciate your patience as we improve our online experience.

Home Community Discussion Forums Most Active Software Boards LabVIEW Topic

LabVIEW

cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

FFT phase shift

FFT phase shift

‎12-12-2014 08:43 AM

I am using LabView7.1 and am trying to understand how the FFT measures the phase difference between 2 analog input signals.  The 2 signals have about the same amplitude and their phases will be about the same. I am getting a phase difference of exactly 0.000000 but there should still be a difference. Not sure how the FFT block compares the two signals. Do I need to specify which is the reference signal? If so, how do I go about doing that?

 

Thanks,

SparkEE

phase.JPG

0 Kudos
Message 1 of 1
(2,681 Views)
Reply