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FFT1024 for THD measurement   Message List  
Reply | Forward Message #639 of 794 |
Re: FFT1024 for THD measurement

Thank you for the response,

Do you know the equations for use with the GetRe and GetIm to yield
phase?

I am still trying to learn FFT so that I can use the control to get my
result, any help with how the GetPowerPt result is scaled would also be
appreciated.

Thanks.




Thu Dec 6, 2007 4:50 am

wolbie76
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Message #639 of 794 |
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I am using VB6 to capture a 60 Hz sine wave at a sample rate of 12288. I am using a 120V outlet (with a DI-730) for testing. The sampled data goes through...
wolbie76
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Nov 30, 2007
3:23 am

To calculate the phase, you can use GetRe and GetIm methods. BTW, FFT1024 is open source...
xchen992000
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Dec 5, 2007
8:05 pm

Thank you for the response, Do you know the equations for use with the GetRe and GetIm to yield phase? I am still trying to learn FFT so that I can use the...
wolbie76
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Dec 6, 2007
4:50 am

Check out the discussion here http://physics.nyu.edu/grierlab/idl_html_help/signal8.html...
xchen992000
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Dec 6, 2007
3:19 pm
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