| 摘要 |
A system for controlling daisy-chain testing of removable printed circuit boards (156, 158) installed along a backplane bus (152) 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 (154) to a removable circuit board (156) and then from circuit board to circuit board as installed consecutively along the backplane bus (152), and from the last circuit board installed on the bus (152) to a pattern comparator (154) which determines whether the pattern matches an expected pattern to isolate components on the circuit boards which are not functioning properly. |
