With all this talk about visualizing reflections, our transmission line simulator might be useful. It will give you a visual view of the dynamics of the signal going down the line (and back) under different source and destination termination configurations and for different driving waveforms. To download it, go to www.ultracad.com Click where it says "Click here to go to the book's resource page" Click where it says "Software demos:" Under the heading "UltraCAD's Transmission Line Simulator" click where it says "Download this simulator here." Doug Brooks UltraCAD Design, Inc ------------------------------------------------------------------ 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 FAQ wiki page is located at: http://si-list.org/wiki/wiki.pl?Si-List_FAQ List technical documents are available at: http://www.si-list.org 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