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Zoom FFT in Labview

I want to build a Zoom FFT vi. I know that the sampled signal must be low-filtered and decimated, but first of all frequency shifted. I want to do this by multiplying the real waveform and e^(-jwt) just as reported here zone.ni.com/reference/en-XX/help/370371K-01/smtlvconcepts/guid-30bbfeac-4f9e-40e8-9d06-1d9aea6f062e/

I wonder how to do this complex modulation and then do FFT of this complex waveform.

Thanks

PS: I don't want to use extra labview toolkit.

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Hi Desk,

the link you provided doesn't work. 

I want to point that what you're try to develop, already exist in a LabVIEW toolkit:

http://zone.ni.com/reference/en-XX/help/372416B-01/svtconcepts/zoom_fft_analysis/

 

 

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