Hello Sanjeev, have a look at TNT/MMTL (google for "TNT field solver", it's on Sourceforge). This is a public domain 2D field solver. It has a graphical frontend which includes a simple sweep function, but nothing forces you to do that - you can just use the calculation engine by itself; also the model files are simple ASCII files so you could auto-generate them with the appropriate parameters, launch the simulator from a script, and then post-process the resulting output file (again, simple ASCII format). The program is free, but you actually get quite a bit more than you pay for ;-) Wolfgang Sanjeev Gupta <skgupta.sanjeev@xxxxxxxxx> Sent by: si-list-bounce@xxxxxxxxxxxxx 03/16/2009 10:41 PM To si-list@xxxxxxxxxxxxx cc Subject [SI-LIST] command line impedance calculator Hello all, I want to create worst case stack-up models, I need to do lot of iterations for Z0 calculation. is there any command line impedance calculator, which can be embedded into scripts. I should be able to specify input parameter in text file and get output in txt format. I am not interested in GUI based calculators. Thanks Sanjeev ------------------------------------------------------------------ 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 ------------------------------------------------------------------ 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