Jean,
Supplying a netlist for testing would have caught this. The netlist needs
to be generated prefferably from your cad. The fabricator should accept
IPC-D-356, the info is in there. They can then run a check against the
tooling before submitting tooling to the floor. There are a number of 3rd
party programs for generating these types of files from different CAD
programs. The ACT product has the capability for you to generate a netlist
file.

Neil Diamond

At 02:03 PM 3/5/98 -0500, Jean Cortjens wrote:
>Yes, it is a good idea to view your own files, but nothing guarantees an
error free board.  We had a board made by the same board house at least ten
times.  There is one custom aperture used one time on one connector on this
board.  They got it right everytime except the last time.  Unfortunately,
they made 6000 boards.  The pad was wrong on the inner layers and tied
power and ground together.  I do all of the steps you have outlined below.
When I viewed the Gerbers, it was right.  How do you prevent this?
>Jean
>

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