Hello,si-list=A3=AC =09i found in the EBD file(part of an IBIS Specification) the path= description is represented by RLC params when Len is not zero. I= am trying to use this inform in a lossy transmission line with= no cutoff freq. given. For example, the Z =3D sqrt{(Rdc += jwL)/(Gdc+jwC)}.but i found that the LC value is for per= arbitary unit ,while R is for the whole section value . So i get= confused with the question whether I can use such a model to= represent a path section ? =09so it come to the problem of length unit again.From one of the= former Q/A,someone say it is not a problem for the calculation= of z=3Dsqrt(l/c) and td=3Dsqrt(len/lc) will devide the unit off(not= a good statement,but i think u can understand my points). This= time who can give me an answer? =09Or shall I use the R value information in another way? =09Any response will be appreciated. =A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1 =09=09=09=09 =A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1cat =A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1cat_carl@xxxxxxxxx =A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A1=A12003-09-11 =09=09=09=09=09With best regards ------------------------------------------------------------------ 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