Bob,

Thanks for the offer, but I already have the dummies document. I was hoping
to fix the Protel output. Your suggestion on "no_conn" net is probably the
way to go.

> -----Original Message-----
> From: Bob Jones [mailto:[EMAIL PROTECTED]]
> Sent: Friday, February 15, 2002 17:21
> To: Protel EDA Forum
> Subject: Re: [PEDA] IPC-D-356 problem
> 
> 
> I also had the same problem. The quick fix for me was to 
> attach a new net
> ( I called it "no_conn") to all the un-connected pins and re 
> -generated the
> IPC file. I told the board house to ignore pins connected to 
> this net. This
> seemed to work.
> I have a "IPC-D-356 for dummies" word document that I can 
> forward to you if
> you like, maybe that will help.
> 
> 
> ----- Original Message -----
> From: "Darryl Newberry" <[EMAIL PROTECTED]>
> To: "'Protel EDA Forum'" <[EMAIL PROTECTED]>
> Sent: Friday, February 15, 2002 2:40 PM
> Subject: [PEDA] IPC-D-356 problem
> 
> 
> > I included an IPC test point (net list) output in my latest 
> board. The
> board
> > house compared the Gerber-generated net list to the IPC net 
> list and came
> up
> > with discrepancies. But the board house was too stupid to find the
> problem.
> >
> > Protel puts unconnected pads in the .IPC file and leaves 
> the net name
> field
> > blank for all unconnected pads. The board house front end 
> system created a
> > spurious net based on this, and assigned all the 
> unconnected pads to it.
> The
> > order (quick turn) was placed on hold. So I guess I lost a day.
> >
> > I scrubbed the web a little, and according to what I found, 
> Columns 4-17
> are
> > supposed to contain unique net ID's in alphanumeric form. 
> "N/C" may be
> used
> > in columns 4-6 for single point networks, in place of a 
> unique net ID. If
> > columns 4-17 are blank when column 2 is a 1 or a 2, it should be
> considered
> > a fatal error.
> >
> > So my conclusion would be that neither Protel output or the 
> board house
> > system is strictly compliant on this point. I don't have a copy of
> > IPC-D-356, so can anybody confirm?
> >
> > Darryl Newberry
> > Freedom Scientific
> > 11800 31st Court N
> > St Petersburg FL 33716
> > (727) 803-8000 tel
> > (727) 803-8001 fax
> > http://www.freedomscientific.com
> >
> 
> 

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