There is Appcad, downloadable for free from HP. It has a section that lets you calculate impedances of traces.
Rene ************************************************************************ * Tracking #: CBAAFC93EC61A640B1C99DD5AC91F0C70AEB36AD * ************************************************************************ -- Ing.Buero R.Tschaggelar - http://www.ibrtses.com & commercial newsgroups - http://www.talkto.net Shuping Lew wrote: >Hello, Everybody, > >Impedance control has been discussed before. I know Protel Stack manager >and Design rule/Signal integrity/impedance constraint can do something >with it. But there is minimum information in the Designer's Handbook or >Protel on-line help. I am still confused and do not know how to start. >Can you give me some basic steps or guidelines for this topic? > >P.S. It is 6 layers board(4 signal and 2 planes). Impedance is 100 ohms. > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * To post a message: mailto:[EMAIL PROTECTED] * * To leave this list visit: * http://www.techservinc.com/protelusers/leave.html * * Contact the list manager: * mailto:[EMAIL PROTECTED] * * Forum Guidelines Rules: * http://www.techservinc.com/protelusers/forumrules.html * * Browse or Search previous postings: * http://www.mail-archive.com/[email protected] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
