Keith, You also might consider something in addition to what Kai is talking about. Make sure your connector(s) are rated for the frequency that you are working at. I ran into a legacy connector (in this case the end connector to a high speed coax cable) that was only rated to 1 ns. Didn't work too well at < 500 ps. Ken -----Original Message----- From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Kai Keskinen Sent: Friday, August 10, 2001 5:44 AM To: 'kowal@xxxxxxxx'; si-list@xxxxxxxxxxxxx Subject: [SI-LIST] Re: jitter introduced by a mated connector Keith: The jitter introduced by the connector will be what is called deterministic jitter which is bit pattern dependent. Do you have access to any version of spice? You can get a pretty good idea of this jitter by running a bit sequence through the single line connector model (obtained from your connector vendor). Cross-talk will also add to your jitter but the simulation gets more complicated. Kai Keskinen Signal Integrity Advisor C-MAC Engineering Inc. 425 Legget Drive Kanata, ON K2K 2W2 kkeskinen@xxxxxxxxxxx -----Original Message----- From: Kowal, Keith [mailto:kowal@xxxxxxxx] Sent: Thursday, August 09, 2001 12:54 PM To: si-list@xxxxxxxxxxxxx Cc: Kowal, Keith Subject: [SI-LIST] jitter introduced by a mated connector Can some point me in the right direction regarding the min/max jitter introduced by connectors within a backplane system ?? - I'm looking into GBit Ethernet type signals and wondering how many passes through connectors The system can withstand.. .... I know this is a tough question... I don't mind learning some new math tricks...Assume that the signals of interest are diff-pairs / FR4 , etc...18" between connectors (max)... Does anyone have any experience with Diff pair signal integrity using a QualitySemiconductor / quickswitch and passing GB diff pair signals thru this type of device? feel free to email me direct, if you want. Thanks, keith kowal Digital Networks, andover MA... ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field 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 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 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