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Defect Coverage for Non-Intrusive Board Tests
SMTnet - Electronic Industry Hub

Defect Coverage for Non-Intrusive Board Tests

NBTNon-intrusive board test (NBT) is an emerging test methodology that integrates several complementary embedded-instrumentation-based test technologies to restore test coverage lost due to diminishing physical (probe) access to printed circuit boards (PCBs).

The non-intrusive test, embedded instrumentation-based technologies that make up NBT include boundary-scan-test, processor-controlled test, and built-in self test. In fact, these technologies form a perfect complement. They are all non-intrusive, typically requiring access only to the common board-level debug/test access port, but each one brings its own distinct elements of defect coverage to the NBT strategy.

Boundary-scan test provides a core capability of test for PCB structure (e.g. shorts & opens); processor-controlled test adds elements of test for production function (e.g. test execution at full processor speed); and built-in self test delivers aspects of test for system performance (e.g. on-margin/measurement).

Credit / Source: Adam Ley | ASSET InterTech, Inc.

Read Article...

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Forum

X-Ray Inspection of Plated PCB | Posted by smt_guy

I have a PCB that is bonded on an aluminum plate. The size of PCB is 11" x 8" and 0.065" Thick, The aluminum plate has the same size and thickness as the PCB... »»

Profiling on rail vs mesh conveyors | Posted by jammm

I need to profile a single sided board thats width is less than the profiler. Is there a difference in profiles when one is completed using the rail conveyor... »»

Temperature Profiling | Posted by Craig

I'm just getting into temperature profiling our PCB's. We recently bought a new reflow oven. What is the preferred way to attach the thermocouples to the PCB locations of interest?... »»

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Data Conversion...

Inspection Drawings...

Tin wash...

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Forum

Shock and Drop Testing of Electronic Assemblies

Seminar/Course | Tue, February 16 | Sponsored by: CALCE

Abhijit Dasgupta conducts his research on the mechanics of engineered, heterogeneous, active materials, with special emphasis on the micromechanics of constitutive and damage behavior... »»

Lead Free Solder Training

Seminar/Course | January 2010 | Sponsored by: Precision PCB Services, Inc

This one day hand-on course will be offered on a daily basis during the month of January, 2010. Students will be taught the differences between lead free and tin-lead solder for solder joint touch up and rework... »»

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Trade Show / Exhibition | Wed, January 20 | Sponsored by: Reed Exhibitions Japan Ltd

Asia's largest exhibition which showcases equipment, materials and technologies needed to manufacture SMT and electronic products.... »»

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Industry Associations Events

SMTA

SMTA - Surface Mount Technology Association is a non-profit international association of companies and individuals (totalling 4,000) involved in all aspects of advanced electronics assembly, surface mount and related technologies. Membership Info | SMTA International | Bookstore

Next Event: LA/OC SMTA Chapter Training - Lean & Green by Phil Zarrow - January 21


IPC

IPC - Association Connecting Electronics Industries is a US-based trade association dedicated to the competitive excellence and financial success of its nearly 2,600 member companies which represent all facets of the electronic interconnection industry, including design, printed wiring board manufacturing and electronics assembly. Membership Info | Training & Certification Programs | Standards & Publications - Online Store

Next Event: Introduction to EMS Training and Program Management - January 15 - 16


SMTnet Express
December 17, 2009

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