Hi, Can anyone tell when a signal is considered as a high speed signal? Is there any definition for high speed signal in time domain and frequency domain? I know that a rise time and PCB trace/Interconnect legth is one of the parameters to define a signal as high speed signal. Can any body provide me the formula Can any body share a FAQ on high speed signals and Cross talk Regards, Rama Mohan Reddy ------------------------------------------------------------------ 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