All,

I have collected a megabyte worth of waveform data from my scope which I=20
would like to perform a FFT on.  The data is from a sine wave which was=20
generated with a TTL crystal oscillator and a filter.  I'd like to see=20
just how well the filter is reducing the harmonics and how clean the=20
sine is.

Can anybody recommend a simple Windows program for doing this?  I don't=20
have access to Matlab and both Octave and Scilab seem to have a learning=20
curve that I'd rather tackle another time.

For what it is worth the scope (a Rigol DS1052) has FFT which looks=20
acceptable, harmonics are <-32dB down.  However I'd like to visualise it=20
on the PC if possible.

Thanks,

David
--=20
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