> In the first case one way is to use the command print > print PAR('(v(outputpos)-v(outputneg))') I think it's simpler than that; all you need to do is: .print tran V(outputpos,outputneg) which is standard SPICE syntax. Also depending on the waveform display program you use, you can usually derive the differential waveform from the raw node data, using subtraction in the plotting program. Regards, Andy ------------------------------------------------------------------ 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