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Zoom FFT Real Values

Hova
Member

Zoom FFT Real Values

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I am having issues running my VI using Zoom FFT and plotting the Real Values of the FRF.  I generated a signal with noise and am attempting to focus on the region between 0 and 500 with the most amount of lines possible (is there a max number of lines that LabView can preform?).  When I attempt to graph the real values of the FRF I get a blank graph.  I attempted to output the Y values of the real portion of the FRF in an array and get all zeros.  Can someone please advise?

4 REPLIES 4
Peñata
Active Participant

Re: Zoom FFT Real Values

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Hi Hova,

 

I ran the VI you posted and plotted data to the Real Part of FRF graph without any issue. What zoom settings are you using?

 

Aaron P

National Instruments

Applications Engineer

http://www.ni.com/support

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Hova
Member

Re: Zoom FFT Real Values

Ha really? Could there be an issue with the version I am running? Version 8.2? Whenever The program runs nothing is plotted except the original graph.

 

Thanks

 

hova

Peñata
Active Participant

Re: Zoom FFT Real Values

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Hi Hova,

 

Have you seen this on multiple VIs or just with this VI? If it's just this VI, try copying the block diagram from this VI to a fresh VI and running it.

 

Aaron P

National Instruments

Applications Engineer

http://www.ni.com/support

Hova
Member

Re: Zoom FFT Real Values

I just tried copying and pasting the block diagram into a new VI and it still doesn't work.  Any other suggestions??