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January 2000

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Subject:
From:
"Stephen R. Gregory" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Fri, 7 Jan 2000 13:33:57 EST
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In a message dated 01/07/2000 12:13:03 PM Central Standard Time,
[log in to unmask] writes:

<< or we move it to the lower left corner of the board or the panel. This
makes locating the image on the metal sheet in the laser system just a little
easier.

 So, no rule, just a guideline.

 Regards, Ahne Oosterhof,
 A-Laser, Inc
 (503)641-9428 >>

Hi Donna!

I'd like to echo Ahne's guidelines too...from an assemblers perspective.
Sometimes, if we ask real nice, we'll get a file of the X/Y centroids for the
SMT components in with the Gerbers, and it makes things real easy to generate
the pick and place program if zero-zero is at either the lower left or lower
right of the board. If we get real lucky, all the theta rotations in the  X/Y
file for the parts will match our machines too...and if we get REALLY lucky,
each X/Y will have the part number, reference designator, and package type
too! But I know sometimes that's asking a lot...hehehe.

-Steve Gregory-

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