Sunil, on the cheap Fast Henry is available free. It is the same engine that is under the hood of Allegro PI. CST, Ansoft, & SiSoft can all handle this problem. If the rise time on the 20MHz signals are slow and the power supplies are well bypassed you shouldn't have a problem passing just a few signals. Steve. sunil bharadwaz wrote: > Hi , > I have few signals (@ 80 Mhz & 20 Mhz) crossing the split Power > plane in the adjacent layer. > > The 20 Mhz signal is diffrerential signal.The 80 Mhz is a single > ended signal. > > I want to analyse the affect on Signal Integrity of these two > signals due to split plane. > > I believe one need to define his stack up (Including the > split) & then extract the layout to simulate. > > I'am not too sure if the prevalent SI tools have an option > of creating split planes . > > Pls suggest me a right tool to carry out this.Also , i'am > looking for a free tool to start with (even if the accuracy > is slightly limited). > > Thanks in Advance!! > > Regards > Sunil.Bh > > > --------------------------------- > Be a better pen pal. Text or chat with friends inside Yahoo! Mail. See how. > > ------------------------------------------------------------------ > 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 > > > > > -- Steve Weir Teraspeed Consulting Group LLC 121 North River Drive Narragansett, RI 02882 California office (408) 884-3985 Business (707) 780-1951 Fax Main office (401) 284-1827 Business (401) 284-1840 Fax Oregon office (503) 430-1065 Business (503) 430-1285 Fax http://www.teraspeed.com This e-mail contains proprietary and confidential intellectual property of Teraspeed Consulting Group LLC ------------------------------------------------------------------------------------------------------ Teraspeed(R) is the registered service mark of Teraspeed Consulting Group LLC ------------------------------------------------------------------ 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