FFT intricacies

[Raiko]

Hello guys,

I've tried to do a little FFT. I created a sinus signal with 10 Hz perisodicity, but both, FFT and CFFT, return a different frequency. There must be some basic problem with my setup, but I can't figure it out.

I's appreciate any clue

Raiko

P.S. I'm using MC 15 on a Win7 machine

[AndyWesterman · Accepted solution]

FFT should return frequencies based on the sampling time so change f to 1/t.s in the frequency calculation.

Regards

Andy

[Raiko]

Thank you Andy