Construction and testing system for wiring looms - has connection to cable via multiplexer with processor control of supply to cable

摘要

A wiring loom is checked by a unit that has a number of contacts (1-4) that can be coupled to specific wires in the loom, e.g. 5. Each contact has an associated LED (7) that connects with a multiplexer (10) that can be addressed by a measurement u7nit (17) and is controlled by a processor (15). A control switch (8) allows the cable to be connected alternately between a supply voltage and ground. The change in the signal observed on the appropriate LED indications is a measure of the wire condition. ADVANTAGE - Simplifies testing of cables.