David,

When I use to work for a fab house we use to take and push the buss bar down from the board edge and add in vias.  These vias were used to access the "top" side of the board.  "Top" being the opposite side you are testing.  You may ask how we got rid of the buss bar.  One of two ways, shear it or rout it.  If you shear it I would highly recommend the use of shear marks.

Jeff Garland
Lavenir Technology, Inc.
[log in to unmask]


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From: 	DAVID DUROSS[SMTP:[log in to unmask]]
Sent: 	Monday, June 30, 1997 5:52 AM
To: 	[log in to unmask]
Subject: 	Test probes for gold fingers

I am currently looking for a convenient way to test gold fingers on a bare 
board top and bottom at the same time using a Mania Cube tester. This is a 
single sided tester. (Yes I know, believe it or not some of us still use 
single sided testers) Testing the fingers on the pin side is not a problem, 
but testing the fingers on the far side at the same time is. We currently jump 
through hoops to guarantee a 100% test on boards of this type. In the past 
we've resorted to using clam shells (expensive), flip test (useless with 
tented vias) and strips of thin core material (a pain to make). The thin core 
material has a finger pattern that matches the board. The part of the strip 
that contacts a far side finger has a dimple. The other end of the strip 
contacts a probe from the bed. The strip is held in place by tape. It works 
but it's very inconvenient. Is there any one that makes a plug in probe off 
the shelf that we could buy that connects to the test bed while bending over 
somehow to test the gold finger on the far side?

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