CORE WIRE FALSE CONNECTION POINT SEARCHING METHOD FOR COMMUNICATION BALANCING CIRCUIT

摘要

PROBLEM TO BE SOLVED: To easily search an erroneous connection point of communication equilibrium circuits by sending a pulse between the communication equilibrium circuits and measuring a transmission time of the reflection pulse appearing on a vertical circuit composed of a pair of leads and an earth. SOLUTION: A pulses is sent between measuring points (a), (b) of core wires 1, 2 so that a transmission time of the reflection pulse appearing between (c), (d) points of a vertical circuit composed of leads 5. A distance to the reflection point is calculated by a prescribed operation based on the measured transmission time and the pulse transmission speed specific to the cable. An erroneous connecting point is thus searched easily regardless of unpaired erroneous connection and erroneous connection without a quad.