RE: [SI-LIST] : Eye pattern with differencial signals.

About this list Date view Thread view Subject view Author view

From: Ingraham, Andrew (Andrew.Ingraham@compaq.com)
Date: Mon Nov 06 2000 - 14:21:49 PST


> I'm working with differencial signals (PECL), and I'll like to know how is
> the correct way to
> generate eye pattern.
> Could I use one of the signal at a time? or must be one minus the second
> signal and then generate the eye pattern?
 
It should be the same way your circuits use the signal.

If the receivers look at one signal of the pair, generate eye patterns that
way.

If the receivers are differential, take one minus the second and then
generate the eye pattern.

(A real differential circuit may behave somewhere between the two due to
imperfect CMR, but it ought to be closer to the second.)

**** To unsubscribe from si-list or si-list-digest: send e-mail to
majordomo@silab.eng.sun.com. In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
****


About this list Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Tue May 08 2001 - 14:29:59 PDT