I have just got a copy of HFSS for evaluation. Things are fine unitil I get to the defining the ports bit, then the confusion sets in. All I want to do is mimick connecting voltage sources of certain impedance to conductors, or connecting a network analyser to these conductors. The sort of things I will be looking at initially are simple things like a wire over ground, parallel wires etc etc (only because I know what the answers should be). I can get clever later (maybe if I havent given up). Anyway, can anyone explain in simple speak for the layman who normally uses test equipment not simulators, how to set these port things up. More importantly some idea of what should be used and why would be nice (there seem to be a vast selection of methods to connect up to the conductors). All help and suggestions welcome Steve (Confused new user) ------------------------------------------------------------------ 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