HI, You could try the SPEED2000 software,there is a downloadable version on the sigrity site. The site is www.sigrity.com[1]. Regards Prathap >From: "npischl" >Reply-To: npischl@xxxxxxxxx >To: si-list@xxxxxxxxxxxxx >Subject: [SI-LIST] looking for (differential) crosstalk calculator on the web >Date: Fri, 03 May 2002 04:26:48 -0000 >>>I would appreciate if anyone could let me know if there is a free >crosstalk calculator available somewhere on the web. I know of the >one on www.ultracad.com, and on www.bay-technology.com. However, I am >not sure if they are appropriate for electrically long lines. >>I have many differential pairs about 5'-6" long, offset and embeded >between two planes, side-by-side traces in each pair, Zo=100 Ohm, >carrying 100 ps edge-times, Zsource about 20 Ohm, Zload=100 Ohm >(differential only), and due to the PCB constrains I must place the >traces and the pairs relatively close together (the chip vendor >recommends 0.2" between the pairs, I can maybe have 0.05"). The >requirement is -50 dB of maxcrosstalk between the pairs. I could use >a single-ended crosstalk calculator and get the differential >crosstalk from the matrix of single ended crosstalks between the >traces, but unless I know that the calculation takes into account the >electricaly long lenghth of the line I am not confident in the >results. >>Eventually I will get Hyperlynx, but that will be too late for this >particular problem that I have now. Until then, I'd appreciate if >anyone can tell me if there is some freebie that may help. >>Thak you, Neven Pischl >>------------------------------------------------------------------ >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 >> ---------------------------------------------------------------------------- Get your FREE download of MSN Explorer at http://explorer.msn.com[2]. --- Links --- 1 http://www.sigrity.com 2 'http://g.msn.com/1HM103401/37' ------------------------------------------------------------------ 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