Thanks to all who responded to my earlier question on 4-port node numbering. After going over the many on list and off list responses it appears that the opinion is split about 50-50 on which of the two numbering schemes makes sense and should be used. There are persuasive arguments given for each case. So it looks like there currently is not any global standard to follow and that one must decide which makes sense from their own perspective and then at least standardize the node definitions within ones own company. Regards to all, -Ray Raymond Anderson Senior Signal Integrity Staff Engineer Product Technology Department Advanced Package R&D Xilinx Inc. ________________________________ From: Ray Anderson Sent: Tuesday, December 13, 2005 11:49 AM To: si-list@xxxxxxxxxxxxx Cc: Ray Anderson Subject: 4-port node numbering I have general question regarding 4-port s-parameter files. Does anyone know if there is a generally accepted industry standard for node numbering? ... .... .... ------------------------------------------------------------------ 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org 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