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- Newsgroups: comp.lsi.testing
- Subject: Re: board test
- Message-ID: <1992Nov20.172046.4272@titan.ksc.nasa.gov>
- From: dlr@testeng.ksc.nasa.gov (Doug Reed)
- Date: 20 Nov 92 17:20:46 EST
- References: <1992Nov18.170306.4244@titan.ksc.nasa.gov> <lglr0dINN5oj@news.bbn.com>
- Organization: Voice Systems Engineering, Kennedy Space Center
- Nntp-Posting-Host: testeng.ksc.nasa.gov
- Lines: 37
-
- >So Doug, While I'm trying to formulate my next question, let's hear
- >one from you! Have you had any 1149.1 implementations tossed your way
- >in board test. Did your testers handle the task. Who wrote the b-scan
- >test vectors? Did you have any internal scan paths? Multiple paths?
- >What where the major hurdles? Did anything go completely wrong?
- >
- >Anyone else...?
- >
- >Ed Kearns
-
- Ed:
- So far we haven't had any 1149.1 designs come our way. I don't think
- that the design guys in NASA have really gotten into it yet... they
- are using XiLinx and Altera stuff to keep us pretty busy and I'm not
- sure that if they started using 1149.1 chips whether they would write
- on-board code for BIT or just for us board test people to crank out
- quicker tests. BTW, our board test equipment is being used for depot /
- interlevel repair of broke boards that used to work. So 1149.1 tests
- would be good for getting up a quick test of the board, but later
- (as time allows or testing requires) it would behoove us to write a
- more complete test. The built-in RAM tests that HP provides with the
- tester tests a minority of addresses, and while that ok for the
- manufacturing environment looking for incorrectly mounted or dead chips
- in quick test time, doesn't provide a thorough test in the depot
- environment.
-
- Major hurdles? Getting design to put in gates to disable ttl
- oscillators... :^) ... no flame intended. All things considered
- we actually have a pretty good rapport with the design people.
-
- Regards, Doug
-
- --
- +-----------+---------------------------------+--------------------------+
- | Doug Reed | HP3065AT Board Test Engineering | Kennedy Space Center, FL |
- | Ham Call N4QVY | #include <std_disclaimer> | Lockheed Space Operations |
- +----------------+---------------------------+---------------------------+
-