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Hi Marshall,
The "connection to overlapping split planes" message often relates to
a via or pad that is connected to one of the planes, but is located
too close to the plane boundary ("too close" being a function of the
design rules in force). The error markers from a full DRC usually
highlight where this is happening.
I've not seen the "intersecting board outline" error before, so I can't
help with that one.
John Haddy
> -Original Message-
> From: Marshall Edge [mailto:[EMAIL PROTECTED]]
> Sent: Friday, 5 October 2001 3:43 AM
> To: Protel EDA Forum (E-mail)
> Subject: [PEDA] Overlapping split planes
>
>
> Hello all,
>
> I am new to Protel (currently using the trial version) and have a few
> questions/inquiries.
>
> I have created a 4 layer (2 signal and 2 plane) board with one of
> the IBMAT
> bus templates. My first concern was that I couldn't find any schematic
> symbols that matched the footprint pin outs used in the template. No
> problem, I created my own schematic symbol. But, is there a library that
> actually matches to the templates provided? It seems rather odd
> that Protel
> would provide board templates that use footprint modules that don't match
> any of the provided schematic symbols.
>
> For the board layout I have split the ground plane into two separate
> grounds, and the power plane into 4 separate powers. When I run the DRC I
> am getting two internal plane warnings and one rule violation.
> I have pasted as excerpt of the report here. Split Power is the
> name of my
> power plane and GND is the name of my split ground plane.
> ---
> Internal Plane Warnings:
> Split Planes intersecting board outline:
> Split Power
>
> Processing Rule : Broken net constraint
> Violation Net: GND
> Warning - Connection to overlapping split planes
> ---
>
> I cannot find where my split power plane intersects with the
> board outline.
> However, it does intersect (actually overlap) with my keepout layer. I
> thought that it might be that the board outline of the template, is not
> closed at the edge connector location. But if so, then why is there not a
> problem with my GND layer. It is also split with two GND's.
> Should I close
> the board outline at this location? Why would it be left open on the
> template?
>
> What is a connection to an overlapping split plane? My GND plane is split
> but there it only two different nets. I guess that they are
> overlapping but
> that is how the manual indicates that a split plane is created.
> There is no
> split plane within a split plane.
>
> Thanks in advance for any help to clear up my confusion.
>
> Marshall
>
>
>
>
>
>
>
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