Cyrus,
And that spec. basically tells you to test every pad and land on the
board.
Rick
>-----Original Message-----
>From: Cyrus Ringle [SMTP:[log in to unmask]]
>Sent: Thursday, December 09, 1999 11:17 AM
>To: [log in to unmask]
>Subject: Re: [TN] electrical testing of bareboards
>
>There is a standard IPC-ET-652. Guidelines and Requirements for Electrical
>Testing of Unpopulated Printed Boards
>
>This is what we use and reference in our documentation.
>
>
>Cyrus Ringle
>Sr. CAD Specialist
>Inter-Tel, Inc. http://www.inter-tel.com
>7300 West Boston Street
>Chandler, AZ 85226
>Voice: (480) 961-2263
>Email: [log in to unmask]
>
>
>
>
>"Erat, Wolfgang" <[log in to unmask]> on 12/09/99 09:21:46 AM
>
>Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please respond
>to
> "Erat, Wolfgang" <[log in to unmask]>
>
>To: [log in to unmask]
>cc: (bcc: Cyrus Ringle/Inter-Tel)
>
>Subject: Re: [TN] electrical testing of bareboards
>
>
>
>Thanks Blaine
>
>well... I guess my question is answered
>
>so, back to square one
>
>Any ideas how this could be addressed as a move towards standardization ?
>
>Wolfgang
>
>> -----Original Message-----
>> From: Test Engineering [SMTP:[log in to unmask]]
>> Sent: Thursday, December 09, 1999 8:06 AM
>> To: [log in to unmask]
>> Subject: Re: [TN] electrical testing of bareboards
>> Importance: High
>>
>> Wolfgang,
>>
>> I have the same concerns and issues as you. We have been faced with
>> complaints of ICT failures due to TPvias not being probed whereas there is
>> no definition or distinguishing factors that separate vias and endpoint
>> vias. To add to this, several of our long term customers have supplied
>> aperture sizes specific to TPvias but have added a new design house that
>> did not define these vias. To many variables are leaving the test world to
>> second guess design and testability.
>>
>> Taking notice to the responses before mine, I seen the words "most have",
>> "could be", "usually are", in those statements. To those gentlemen, please
>> don't take offense, I point these out as the variables I mentioned.
>>
>> For us to do our job correctly and accurately, a standard definition would
>> be perfect. I had stated this to designers during the IPC BBT expo in May
>> 99 with little positive response. This is one of many issues where it has
>> become imperative for the test and design worlds to converge and together
>> deliver the product our customers expect and deserve.
>>
>> Blaine R. Shelkey
>> Test Engineering Manager
>> TYCO PCG/Melbourne
>> 600D John Rodes Blvd.
>> Melbourne, Fl. 32934
>>
>> 321.308.8843 (Ph)
>> 321.308.8868 (Fax)
>> Email: [log in to unmask]
>> <http://www.iu.net/aqc>
>>
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