> At 09:31 PM 6/4/2002 -0400, Mitch Berkson wrote: > >I'd like to draw graphical dashed lines in a schematic to indicate guard > >traces which should be placed during PCB layout. Is there a way to do > >this in Protel 99SE SP6? > > Others have noted how to place a dashed line, and also that such a line has > no incorporated intelligence, it is only a note to the PCB designer. > > However, it is possible to go further than that. > > I assume that the guard traces are to be grounded, since they would be > positively harmful if they were not.
Thanks for the useful information. Just as a point of interest - the type of guard trace I will be using is not necessarily connected to ground. It is guarding the high impedance input of an op amp with a low impedance signal at the same voltage in order to minimize leakage current into the high impedance node. Mitch Berkson * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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] * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
