Ray - We define random jitter as unbounded, truly Gaussian. Since crosstalk in two lines that are coherent is deterministic, the crosstalk in two non-coherent lines will be no worse, if a different distribution. Andrew Volk Intel Corp. -----Original Message----- From: Ray Anderson [mailto:Raymond.Anderson@xxxxxxx] Sent: Friday, May 17, 2002 1:24 PM To: si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Jitter from Crosstalk I've got a question on crosstalk to pose to the aggregate wisdom of si-list. In the problem's most simplistic form assume we have two transmission lines (an aggressor and a victim). The two lines are somewhat coupled. Further assume that the aggressor line has a very randomized signal on it (say a PRBS 2^31-1 pattern). Also assume that the signal on the victim line is completely non-synchronous with the aggressor signal. Now for the question: Is the jitter induced on the victim signal random in nature if the aggressor signal approximates a gaussian distribution in randomness ? Since the signals are non-synchronous, they will be "sliding" by each other in time and therefore the contribution to the victim signal jitter will be random in time. This will cause a somewhat 'periodic' contribution to the induced jitter. Is this a deterministic component ? So I guess the real question is, given the above assumptions, is the induced jitter Rj, Dj, or a combination of both. I'd be interested in hearing any opinions and/or references to studies on the topic. Thanks, Ray Anderson Sun Microsystems Inc. ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: //www.freelists.org/webpage/si-list For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu