On Tue, Sep 18, 2012 at 3:52 PM, David wrote: > All, > > I have collected a megabyte worth of waveform data from my scope which I > would like to perform a FFT on. The data is from a sine wave which was > generated 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 > have 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 > acceptable, harmonics are <-32dB down. However I'd like to visualise it > on the PC if possible. > > Thanks, > > David > If you can get the samples in a .wav file, try Audacity. The menu option is "frequency analysis". Regards, Mark markrages@gmail --=20 Regards, Mark markrages@gmail --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .