WIRING CHECK SYSTEM FOR COMMUNICATION EQUIPMENT

摘要

PURPOSE:To easily find out a wiring error and to confirm a wiring error even at the point of time of installation. CONSTITUTION:A function to set a wiring check mode to output a voltage signal for wiring check to a communication line L is provided to a master station A. A slave station B is provided with a light emitting diode LD1 lighted through the reception of the voltage signal fed to the communication line L. When the slave station B is connected to the communication line L in the correct polarity, the light emitting diode LD1 is lighted to indicate it that there is no wiring error.