Re: [SI-LIST] : AC Coupling vs DC Coupling

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From: Scott McMorrow (scott@vasthorizons.com)
Date: Mon Apr 17 2000 - 14:36:36 PDT


"Greim, Michael" wrote:

> What is an effective method of quantifying
> ISI's effect on jitter. Within a simulation, would
> the narrowing of an eye pattern indicate this.

Yes, a good comparison would be to simulate
a pseudo random pattern and then compare it
to a simple pattern with a large number of ones
followed by a large number of zeros.

>
> Would the difference between a pseudo random
> bit sequence and a clock creating the eye show
> this for a given topology?

Yes, this third comparison is also quite useful

regards,

scott

> Thanks for the help.
>
> MG
>
> > So ... whether on not non-DC balanced data will work in a system is
> > dependent upon the available jitter and skew margin at the receivers
> > and other sources of noise, jitter and skew in the system. ISI can
> > be simulated to determine the upper bounds on it's contribution to
> > jitter.
> >
>
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--
Scott McMorrow
Principal Engineer
SiQual, Signal Quality Engineering
18735 SW Boones Ferry Road
Tualatin, OR  97062-3090
(503) 885-1231
http://www.siqual.com

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