On 19/09/2012 16:56, Kardasinski, Milosz wrote: > SigView. It is shareware, but I do believe that it is fully functional fo= r 21 days. Thanks! The demo is excellent and I've got an FFT in a few minutes.=20 Bit of fiddling to get a logarithmic Y axis in dB but no real problems.=20 Interesting to play with data from the scope on the PC. Scilab is still loading the data. In the time it has taken I read your=20 mail, downloaded SigView and have the results. In Scilab I had to: // Do this or EXCEPTION ACCESS violation.. stacksize("max") M=3Dread_csv("C:\NewFile1.csv") And this hasn't completed yet, despite me having a fairly powerful PC. It seems Sigview will do what I need for now, even if it isn't free in=20 the longer term. Regards, David --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .