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.
PS: I don't want to use extra labview toolkit.
the link you provided doesn't work.
I want to point that what you're try to develop, already exist in a LabVIEW toolkit: