"rickman" wrote in message Yes, it is good to start
with a signal that has less harmonic content.
Can your function generator put out a sine wave? I bet that has pretty
low harmonic content...


Yes my function generator can put out square, triangle and sine waves. I
was just using the square waves to refresh my memory on what hapens when
they go through a low pass filter. I have not played with that in many
years.



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