As another board fabricator, AOI will not pick up on problems with plated
through holes. As a voided hole is another opportunity for an open circuit I
am skeptical as an out and out replacement for E.T. Of course it does pick
up trace reductions and spacing violations.

Bob Dube

-----Original Message-----
From: Franklin D Asbell <[log in to unmask]>
To: [log in to unmask] <[log in to unmask]>
Date: Friday, September 01, 2000 1:17 PM
Subject: [TN] Automatic Optical Test (AOT)


>Just read an article in "The Board Authority" regarding Automatic
>Optical Test (AOT).
>
>Just wondering what you assemblers or purchasers of bare boards thoughts
>are on fabricators performing 'optical testing' (visual, AOI)  instead
>of 'contact testing' (BON, probe)????
>
>An example: You state all boards to be electrically tested for
>opens/shorts, and instead of throwing the boards on our flying probe or
>bed-of-nails equipment I decide to put this on my AOI after setting it
>up to flag for opens/shorts, would you be satsified with this method?
>
>Franklin D Asbell
>Network Circuits, Inc.
>Irving, Texas 75061
>
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