> I was reading about signal reflections. I do not > understand the formula rho = (zo-zterm)/(z0+zterm) > Could anyone explain it/give some tech article, more Explain the formula? Sure. "zo" is the characteristic impedance of the transmission line. "zterm" is the termination or load impedance on the end (or at whatever boundary you have) of the same transmission line. "rho" is the resulting reflection coefficient. Andy ------------------------------------------------------------------ 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 technical documents are available at: http://www.si-list.net 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