边界扫描技术在电路板故障诊断中的应用

Boundary Scan Technology's Application in Board Fault Diagnosis

现代飞机中使用的电路板大量采用集成度很高的IC,尤其是BGA器件。传统的测试方法已经无法进行或者测试效率很低,并且测试的覆盖率也不高,电路板调试工作极为困难,迫切需要一种高效的测试手段来解决硬件测试中遇到的难题。文章采用边界扫描技术设计的电路板自动测试设备(ATE)很好的解决了高性能电路板测试的难题。

In modem aircraft, a large number of high integrated IC are used in PCB, especially BGA device. The traditional test method can＇ t be used or the efficacity is very low, and the test coverage is not high. The working of PCB debugging is extremely difficult. An efficient testing means to solve the problems encountering in the test hardware is urgently needed. Using automatic test equipment （ATE）in the boundary scan technique provides a good solution to a high performance PCB testing.