Fault Isolation Via Active Connector Partitioning
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09
This article describes a fault-isolation scheme which partitions a system into line replaceable units with independent failure mechanisms. This concept allows flexibility to mix interface technologies within a system. Systems interconnected via serial communication lines (point-to- point, rings, loops, etc.) are frequently designed for self-test and fault isolation. A case in point is where each unit is microprocessor- based and each micro contains diagnostic code for testing. When a unit or function fails, the test routines and data are used to isolate the fault. One of the weak areas in system implementation is found at the interfaces. Faults are difficult to isolate because a driver, receiver and/or cable can cause identical symptoms.