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Many test strategies exist in the board test world. It would be nice to think that each of these has been honed over many years of study and measured performance to yield the optimal balance of cost, quality,and service required by each enterprise. In reality, most strategies evolve in isolation to satisfy current objectives stemming from market demands. When we look across the many markets for electronic assemblies, we see a whole range of test strategies based on the product's end use. We can speculate on the technical justification for these differences in test strategies, but someone looking from outside our industry would quickly suspect that the product test strategy is related more to the selling price the market attracts than its technical content. It could be argued that the highest technology products attract the highest price because they also require extensive testing. But if this were wholly true, why does a PC motherboard production test strategy differ from a telecommunications switching card? Both use similar component packaging styles and assembly technologies. Both have been sold in the millions globally. Of course, this is an oversimplification of a complex set of problems, especially when we consider the requirement to comply with a whole range of regulations, but it raises issues we should not ignore.

B. Sutton, "Board Test and the Product Life Cycle: Get Wise to Board Test Strategies," in IEEE Design & Test of Computers, vol. 16, no. , pp. 28-33, 1999.
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