[PCB_FORUM] Re: Testprep Problem
- To: <icu-pcb-forum@xxxxxxxxxxxxx>
- Date: Wed, 19 Jan 2005 10:10:26 -0500
For future reference .....
According to the testprep.log file Dennis attached, all the failures on
the nets are due to one of two different reasons:
'too-close=<n>' ... <n> points (e.g. pins or vias) failed because
they were either
too close to other already existing testpoints
(minimum spacing
of 5.00), OR in fact the testpoint would create
DRC errors. The
'too-close' category combines both situations.
'pad undef=<n>' ... <n> pin or via points on the net failed because
with BOTTOM side
testing enabled, the pin or via point does not
have a pad
existing on the BOTTOM side for probing.
Ed Hickey
Allegro Technical Marketing Manager
Cadence Design Systems
Chelmsford, MA 01824
978-262-6545
-----Original Message-----
From: Carrow, Dennis P. [mailto:Dennis.Carrow@xxxxxxx]
Sent: Wednesday, January 19, 2005 8:12 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Testprep Problem
Got it! Thanks for all the replies! Actually it was someone else's
problem that I was asked to help out on. He had an anagnd plane on one
layer that he had neglected to void. Apparently, the drc's kept the
Auto Probe program from selecting those pins with drc's(but allowed
Create Probe to work). I voided the plane for a test and ran it again
and low and behold all connector pins became test points! Thanks again!
-Dennis
-----Original Message-----
From: Kevin McCowan [mailto:kmccowan@xxxxxxxxxxxxxx]
Sent: Wednesday, January 19, 2005 6:52 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Testprep Problem
It looks to me like you have a rules problem.
From what the log file says, anyway.
It says that if the pad is not defined on the bottom it is too close to
some other feature to allow it to place the test pad.
Check your rules. Not just for the test points but also all metal rules.
You might want to set the test point grid to something smaller than 10
mils. Maybe set displacement to something larger than 0 to allow for
testpoint landing sites that don't fall on the grid.
Hope I'm right and this helps,
Kevin McCowan
Sr. PCB Designer
TSI Telsys
Carrow, Dennis P. wrote:
> Hello All,
> I'm having a slight problem. I cannot get the Auto Testprep
program to assign testpoints. I have thru hole connectors that I want
to test. It will allow me to use 'Create Probe' and select an
individual pin on the connector but when I run the auto program it fails
on all nets but one(anagnd). I have attached the log file.
Can someone tell me what I'm doing wrong? Thanks in advance! (using
14.2)
>
> <<testprep.log>>
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