Perfect Test measures rotation, shift, and distortion of each individual
innerlayer within a package. Using the system, you can replot innerlayers
so that after all processing, the layers will more closely match design
dimensions. In addition, statistics are provided which helps to eliminate
"future" dimensional changes on designs using the same construction
materials and stack-up.

The system is also very good at helping to identify weaknesses in a
fabricator's tooling system and process by spotting differences within the
same lot of boards.

At 12:29 PM 10/24/00 -0700, you wrote:
>Fab and Design Expert,
>
>Does any one throw some light on Perfect test for PCB? I have heard that
>it's a patented method to find out registration problem.
>
>re,
>ken patel
>
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