Re: Clean-up RS232 Signal

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



On Dec 8, 6:03 am, Jan Panteltje <pNaonStpealm...@xxxxxxxxx> wrote:
On a sunny day (7 Dec 2006 13:45:16 -0800) it happened jecottrel...@xxxxxxxxx
wrote in <1165527916.007256.65...@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>:

Hello All,

This may be more suited to .basics, but I'll try here and prepare for
the possibility of being chastised for not addressing the appropriate
group :-).

Couple of questions regarding a RS232 signal, btw this is on both sides
of the 232 shifter. When looking at the signal on the 'scope the
leading edge over shoots by about 10-15% of the total level before it
settles.Assuming you calibrated the scope probe :-) no it does not matter.
the signal is limited, and sampled halfway the bit time anyways.

.