Be careful with planes. I made a pallet of 2 boards, and two of the planes
changed nets. If I didn't catch it reviewing the gerbers, BOOM! Instant
shorts.
Sean James
PCB Designer
Telecast Fiber Systems, Inc.
102 Grove Street
Worcester, MA 01605
(TEL) 508.754.4858 x33
(FAX) 413.541.6170

----- Original Message -----
From: "Anthony Whitesell" <[EMAIL PROTECTED]>
To: "Protel EDA Forum" <[EMAIL PROTECTED]>
Sent: Friday, December 28, 2001 3:57 PM
Subject: Re: [PEDA] Ground Planes


>
> Rene,
>
> There is a big difference between a plane and a polygon fill.  Planes
don't
> get repoured unlike polygons.  Planes are made as a negative gerber files
> which are much smaller.
>
>
>
> Steve,
>
> I noticed this and didn't give it much thought an just went around and
> deleted the extra connections.  But now that you mention it, I too have
seen
> this behavior when autorouting a PCB with planes.
>
> Anthony Whitesell
> Sunrise Labs
>
>
> -----Original Message-----
> From: Rene Tschaggelar [mailto:[EMAIL PROTECTED]]
> Sent: Friday, December 28, 2001 3:49 PM
> To: Protel EDA Forum
> Subject: Re: [PEDA] Ground Planes
>
>
> Since the plane takes a long time drawing/refreshing, I
> usually place the plane as last action.
> I finish the layout without plane, then save it and copy
> to a new name usually  'mydesign_WP.pcb', eg adding the _WP
> postfix. Then I pour the plane. If the fill is not complete,
> eg there are holes, a few vias assigned to GND do the job,
> - repour.
>
> For HF prints, a bunch of via's connect the upper and the
> lower GND plane. It takes some iteration until the plane
> and the vias make sense.
>
> Rene
> --
> Ing.Buero R.Tschaggelar - http://www.ibrtses.com
>
> Steve Pfeifenroth wrote:
> >
> > Hello everyone,
> >
> > In Protel everything is connected by a net. Fine. When you go to lay
> tracks
> > on boards (If you let Protel do some of the work by auto routing)
connects
> > like nets in a pin to pin fashion. I know I can configure some of the
> > routings in the design rules section. But here is my question. Take for
> > instance I create a ground plane that runs along the bottom whole length
> of
> > a board. How can I get Protel to net off the ground plane using the
> shortest
> > distance to a part? It seems to me that even if I create a ground plane
> > (Calling it GND) and use the auto route it still connects from the pad
> > instead of the plane. I can do it by hand but was hoping that I can have
> > Protel do most of the work.
>
>

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