SigView. It is shareware, but I do believe that it is fully functional for =
21 days.

-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of=
 David
Sent: Tuesday, September 18, 2012 5:52 PM
To: Microcontroller discussion list - Public.
Subject: [EE] FFT for Windows

All,

I have collected a megabyte worth of waveform data from my scope which I wo=
uld like to perform a FFT on.  The data is from a sine wave which was gener=
ated with a TTL crystal oscillator and a filter.  I'd like to see just how =
well the filter is reducing the harmonics and how clean the sine is.

Can anybody recommend a simple Windows program for doing this?  I don't hav=
e access to Matlab and both Octave and Scilab seem to have a learning curve=
 that I'd rather tackle another time.

For what it is worth the scope (a Rigol DS1052) has FFT which looks accepta=
ble, harmonics are <-32dB down.  However I'd like to visualise it on the PC=
 if possible.

Thanks,

David
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