Hi All, Im newly working on SI and as well as in SPEED2000 Tool. While i try to start the simulation of 2 layer board, i got error/warning like "There is no plane or patch (top or bottom) covers the trace segment". Also in tutorial, "by uncheck option providing reference to the trace or do unionize shape."Please let me know how to do this Also ill be thankful if some one provide me (SSO analysis tutorials, like wat are the parameters to be considered from the layout and How to do it in Speed2000 i.e procedure with example files) It will be helpful to know that im doing rightly Regards Prasguy ------------------------------------------------------------------ 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