Hi I got a package model from HFSS, which is s8p file, including two differential signal run up to 10Gbps one power pin and one ground pin close to the differential signal. For AC simulation I need to add 50 ohm termination in both sides of power/ground pin/pad to get same AC response match with S-parameter. My question is if I want to run trancient simulation with this S-parameter, whether I can use the power/ground ports in the package model to provide power supply from pin to pad? My feeling is this will make transcient simulation un-accuraccy due to no termination. Thanks Tony ------------------------------------------------------------------ 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 forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu