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From [log in to unmask] Fri Apr 11 12: |
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[log in to unmask] wrote:
>
> Does anyone know anything about specifications or IPC standards or guidelines or anything about design for automated testing such as Gen Rad? We want to incorporate this but we don't know how.
> PLEEEEAAAAASE HELP ME!!!
Dan,
Preparing for ICT involves two parts - you need the correct
features on the assembled board (accessible test points) and
you need to work out data transfer to the testing resource.
The upcoming replacement for IPC-D-275 has worthy info on
the testpoint features, but I forget its number and I sus-
pect it's not released yet.
The data transfer part of the problem is generally worked out
by either your CAD system vendor or the front-end tools that
your testing house uses. This will require explicit knowledge
of which tester is to be used.
There are a host of engineering issues as well, the most vis-
ible in design are the presence of soft-ties (pullup/pulldown)
on all logical commits - no direct ties to planes for other
than supply.
Your best resource will almost certainly be the house that
will eventually do the testing. They will likely have some
printed material for you.
If I can help further, email me offline.
Regards,
--
Jeff Seeger Applied CAD Knowledge Inc
Chief Technical Officer Tyngsboro, MA 01879
[log in to unmask] 508 649 9800
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