> Ken,
>
> I would recommend gerber RS 274X. This form of gerber has the aperture
> definitions, paint/scratch definitions, etc. all contained within the
> gerber file. With this format, you would have one RS 274X file per
layer.
> Every CAM package I know of can read this format.
>
> With regards to drill data, I would suggest either supplying an RS 274X
> file with the rest of the data or Excellon format. Regardless of the
> format you supply, the fab house will read it into their CAM software for
> panelization, etc.
>
> Independent of the format of the data files, a good readme file
describing
> what layers each file represents and any other information not contained
in
> the gerber and drill files.
>
> Finally, an X,Y netlist such as an IPC-D-356 file should also be
supplied.
> This allows the fab house to compare a netlist extracted from the gerber
> and drill data to the supplied netlist to verify that the data is
correct.
>
> Dave Roesler
> TRI-C Design, Inc.
>
> ----------
> > From: Ken Patel <[log in to unmask]>
> > To: [log in to unmask]
> > Subject: [TN] What is gerber & what format is good....
> > Date: Thursday, January 08, 1998 12:56 PM
> >
> > I am writing a layout house deliverable. Can any one suggest what is
the
> > best format I should receive the gerber data from our layout house. Or
> let
> > me put this way - what fab house normally wants to do better, faster
and
> > error free job in terms of gerber and associated stuff if any?
> >
> > When we say gerber does that include drill file, aperture list, etc? Is
> is
> > gerber carry everything?
> >
> > Is there any real importance to specify to use certain cad package like
> > allegro, etc? or this what we have to decide to standardize the gerber?
> >
> > Please excuse me as I do not know much on this side.
> >
> > re,
> > ken patel
> > ______________________________________________________
> > Ken Patel Phone: (408) 490-6804
> > 575 Cottonwood Dr. Fax: (408) 490-6859
> > Milpitas, CA 95035 Beeper: (888) 769-1808
> >
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