Hi, This is regarding ibis model parameters. The parameters Vmeas, Cref, Rref, Vref are optional âRef: Page No 47, Table 5.3 â IBIS [Model] Sub parameters, IBIS MODELING COOKBOOK For IBIS Version 4.0 The datasheet of a particular device mentions timing measurements against some specific loading which is different from its ibis model Cref and Rref . In this case can one edit the Cref and Rref in the ibis model to match datasheetâs loading values so that timing values specified in datasheet can be used in the timing model of Signal Integrity simulation tool ? -- Best Regards, Balamanikandan.K ------------------------------------------------------------------ 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 forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu