Re: [PEDA] Internal plane problems
Thanks, Dave... Brian * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Internal plane problems
The instruction below is not correct. A primary or outer plane CAN completely enclose any number of secondary planes, it is secondary planes that must not enclose any other secondary planes. The example diagram in the manual is a little misleading in that it doesn't specifically show the outermost plane. Read the caption carefully. (P.571 in 99 manual) Dave Sanders -Original Message- From: Brian Sherer [mailto:[EMAIL PROTECTED]] Sent: Wednesday, December 11, 2002 6:28 AM To: Protel EDA Forum Subject: Re: [PEDA] Internal plane problems Also note that the Primary Plane must not be "closed", or completely enclosing any Secondary Plane. You must "break" the margin of the Primary Plane toward the edge of the board to create a gap in the Primary Plane for each Secondary Plane. Protel's Help system has an example, I believe. Check Plane current density and signal layer paths to determine the best place to create these gaps. Brian * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Re: [PEDA] Internal plane problems
Afshin, Addition of the secondary planes has to be done in a certain way, or Protel has trouble allocating the plane areas. To add secondary Split Planes, it's necesary to create "holes" on the Primary Plane by editing its vertices (ie, by doing Edit Move Polygon Vertices, selecting the polygon, then dragging the handle {a small cross in the middle of a side of the plane polygon} to a new location). Continue until sufficient space is created for the new Split Plane, and add the new plane. Though the edges of the Split Planes can coincide, be sure not to overlap copper areas of the various planes. Also note that the Primary Plane must not be "closed", or completely enclosing any Secondary Plane. You must "break" the margin of the Primary Plane toward the edge of the board to create a gap in the Primary Plane for each Secondary Plane. Protel's Help system has an example, I believe. Check Plane current density and signal layer paths to determine the best place to create these gaps. These are supposed to be hard and fast rules, but I've had boards that checked and ran OK even with small embedded Split Planes. But the procedure should be followed, since DRC results and plane connection assignment is unpredictable if it's not. I'm sure others have more tips. Brian * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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/proteledaforum@techservinc.com * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *