I've been using uCap spice for most of my simulations and building a from scratch lumped parameter model for the transformers. uCap has = three different ways to enter the values for these. All three seem to work equally well. Are you simulating PAM5 full-duplex modulation? --- mkp=20 -----Original Message----- From: Painter, Chris [mailto:Chris.Painter@xxxxxxxxxxxxxxxxxxx] Sent: Tuesday, October 21, 2003 1:19 PM To: Si-List (E-mail) Subject: [SI-LIST] Ethernet simulations Does anyone one this forum have experience running simulations of = Ethernet signals? If so, where do you get models of the isolation transformers? Christopher Painter (chris.painter@xxxxxxxxxxxxxxxxxxx) Electrical Design Engineer Tyco Electronics Austin Division Phone: 512-250-6934 Fax: 512-250-6940 ------------------------------------------------------------------ ------------------------------------------------------------------ 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