Re: on 100% PCB test & the new Sierra boards

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From: Wayne Burdick (burdick@interval.com)
Date: Fri Dec 01 1995 - 21:32:06 EST


>Tell us what a bed-of-nails fixture is (if you have time ...)

Ooops, sorry Jack. It's a PC board test fixture that has uses "nails"
(contact pins) to make contact with each pad/hole on the board. You use it
in conjunction with a computer to verify continuity and circuit isolation.
There's usually a $100 to $200 tooling charge (or more depending on the
complexity of the board). Standard procedure for big-company production
boards, but apparently not for most small companies!

If you don't do it, you'll occasionally get PC boards that have hairline,
nearly-invisible traces between adjacent circuits.

73,
Wayne


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