thanks Dave.
I'll let you know what happens.
Robert

"Blake, Dave" wrote:
>
>         Talk with the team at ADI ..Automata Design Design....Herndon
> Virgiinia
>                                               703-742-9400  ext 21  Bob
> Lowery  President/CEO
>         Absolutely GREAT Folks!!!  witha great product ...or two!!!!
>
> We have used their CAM tools for yesrs  ADI DRC    and ADI XNetview for our
> vallidation and analysis of gerber data vs the CAD database...........with
> netlist compare..and other greta features..
>
> Dave Blake
> Mgr ECAE Physical Tools              Compaq Computer Corp
> 281-514-9965                                  20555 SH 249
> Fax 281-514-9541                           Houston Texas 77070
> [log in to unmask]             CCA8 - 8440
>
> -----Original Message-----
> From: Ed Cosper [mailto:[log in to unmask]]
> Sent: Monday, May 24, 1999 2:24 PM
> To: [log in to unmask]
> Subject: Re: [TN] Fab E/T Gerber comparisons
>
> Hi all,
>
> Got a question regarding electrical test net list Vs Gerber data. Our
> existing software package ( Tibor Darvis ) will generate a net list file
> from supplied gerber data. They call this snap grip and it is used as a base
> line for comparing net list ends to edited gerbers. The purpose is to have a
> customer supplied base line end point configuration to compare against after
> you have panelized and optimized customer supplied one up gerber data.
>
> My question is this. Does anyone know if there is a software medium that
> compares the end item gerber data to the design schematic?  Basically my
> customer is asking me if I have a way to detect any designs problems in his
> supplied gerber files  as it relates to the original design intent. Based on
> my conversations with my customer, apparently he has had problems in the
> past where a person or company that originated some plots inadvertently
> built in a short which our net list test didn't detect. He indicated that he
> could provide the IPC-D-356 net list file and feels that if we check the
> gerbers against this file we should detect any difference. However, It is my
> understanding that the D-356 net list file is generated from gerber data and
> should not be different.
>
> Any thought or help would be appreciated.
>
> Ed Cosper
>
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