Re: Clean-up RS232 Signal

On a sunny day (10 Dec 2006 15:43:02 -0800) it happened white.brad@xxxxxxxxx
wrote in <1165794181.982928.122510@xxxxxxxxxxxxxxxxxxxxxxxxxxx>:

Isn't this just Gibbs Phenomenon? If that is the case your equipment
is working fine and calibrated correctly. The overshoot is just a
consequence of trying to make a waveform with a discontinuity.
Mathematically I think the overshoot is 9%. Just do a wikipedia
search to see if that is what is happening to you.

http://en.wikipedia.org/wiki/Gibbs_phenomenon

I think Gibbs is the other way around, from that page:
<quote>
J. Willard Gibbs pointed out in 1899 that the oscillations were
a mathematical phenomenon, and would always occur when synthesizing
a discontinuous function with a Fourier series.
<end quote>

He is not doing a reverse Fourrier.
.