By Stephen Scheiber
Written in a transparent and considerate type, development a profitable Board-Test process, moment version bargains an built-in method of the complex strategy of constructing the try techniques such a lot fitted to a company's profile and philosophy. This e-book additionally presents entire insurance of the specifics of digital try gear in addition to these broader problems with administration and advertising that form a manufacturer's "image of quality."
In this new version, the writer provides nonetheless extra "war stories," correct examples from his personal event, in order to consultant his readers of their decisionmaking. He has additionally up-to-date all technical points of the 1st version, protecting new machine and attachment applied sciences, new inspection suggestions together with optical, infrared and x-ray, in addition to vectorless tools for detecting surface-mount open-circuit board disasters. The bankruptcy on economics has been greatly revised, and the bibliography comprises the most recent fabric in this subject.
*Discusses ball-grid arrays and different new units and attachment technologies
*Adds a entire new bankruptcy on optical, infrared, and x-ray inspection
*Covers vectorless thoughts for detecting surface-mount open-circuit board disasters
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Additional info for Building a Successful Board-Test Strategy, Second Edition (Test and Measurement Series)
Another drawback to this approach is that oftentimes people conducting tests at field installations are much less familiar with the product and the test program than are their counterparts in the factory. New boards may contain technology that field people have rarely seen. As a result, board testing and repair can take much 34 BUILDING A SUCCESSFUL BOARD-TEST STRATEGY longer than in the factory, and identifying the actual cause of a subtle failure may be difficult or impossible. If, as with governments and military contracts, customers demand unusual conditions such as particular test equipment in the field, there is no alternative but to comply.
For example, a product early in its life may require in-circuit testing. As the process matures, a manufacturing defects analysis may suffice. The simpler test is faster, less expensive to develop, and less expensive to conduct. If the in-circuit tester is not needed elsewhere, it can also execute the new test, avoiding the necessity to acquire additional equipment. Constructing a test strategy requires answering one other very important question: How much will it cost? The next section begins to address this critical issue.
Some years ago, a Japanese television manufacturer decided to perform no testing until final product turn-on just before shipment. By carefully controlling vendor product quality and the manufacturing process, the company achieved a 96 percent turn-on rate. With that type of quality directly from the process, the most cost-effective strategy would probably be to test only those products that fail. An American company trying to implement the same strategy fared less well. They managed a turn-on rate of only 36 percent.
Building a Successful Board-Test Strategy, Second Edition (Test and Measurement Series) by Stephen Scheiber