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Devashish Dhyani

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About Devashish Dhyani

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    One hit wonder!

LabVIEW Information

  • Version
    LabVIEW 2015
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  1. Hey @mross I have a very similar issue. Your help would be greatly appreciated. I am trying to get the FFT of a 1D array which is basically an excited sine wave (or what many know as a 'chirp'). However, the data points seem to be too large in magnitude. Is there a scaling factor or anything of that sort that I may be missing? I have made sure that the inputs to the FFT block are what I am expecting and that the FFT is set to process a 1D array. Since this partial work-product, I am unable to supply the VI but have added extensive pics detailing the issue. 'Alpha 4' shows the chirp mid way and shows the waves are clean and without distortion at a high frequency. 'Beta 1' shows the same thing but at a lower frequency. 'AlphaOut' is the signal that I want and I have probed/zoomed to verify this. The top 4 graphs are all the same (i.e. a sine wave being excited from 0-1500Hz in 5 secs at a rate of 300Hz/second). All graphs have been zoomed in at different points to show clarity. The 'Real Part' graph is where I am stuck. Please let me know if any other info is needed. Any ideas or help would be greatly appreciated. Thanks
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