Serielles Testen von steckbaren Leiterplatten, die auf einer Busleiterplatte angebracht sind

摘要

A system for controlling daisy-chain testing of removable printed circuit boards installed along a backplane bus facilitates the use of serial testing methods for circuit boards which are designed according to boundary-scan testing standards. The system automatically controls propagation of serial test data from a serial data pattern generator to a removable circuit board and then from circuit board to circuit board as installed consecutively along the backplane bus, and from the last circuit board installed on the bus to a pattern comparator which determines whether the pattern matches an expected pattern to isolate components on the circuit boards which are not functioning properly.