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DSO 6104L FFT Question

Question asked by erickulcyk on May 11, 2012
Latest reply on Sep 26, 2016 by bme

I am using a dso6104l low profile scope and I am programming it with Labview.  I am using the FFT of a signal, and I trying to understand what it is telling me.  I was wondering if someone could enlighten me on how the process works to compute and display the FFT.  Specifically, how do the FFT span and FFT center affect the results?  Also, does it filter out negative frequencies or leave them in?  Is the result scaled to account for the sampling.  What happens when 2*FFT_Span>FFT_Center?  How is anti-aliasing handled (I saw that the scope has an option to disable anti-aliasing).  I was looking through the user manual and programming manual, but all they seem to say is that the FFT is output...  Thanks for any input,