| 摘要 |
PURPOSE:To test always correctly a network to be tested, by comparing and collating the voltage measurement result of each measuring terminal with preliminarily stored terminal voltage data of every network to be tested to retrieve the type or the like of the network to be tested. CONSTITUTION:Terminals 111-11n of a network 10 to be tested are inserted to measuring terminals 61-6n, and the start switch of a CPU2 is turned on. The CPU2 controls a driver 15 to operate relays RL01-RL0n successively to cause a digital voltmeter 13 to measure voltages of measuring terminals 61-6n successively through a switching circuit 12, and results are sent to the CPU2 through a buffer memory 14. They are compared and collated with data of combinations of voltage values of every network stored in a memory 1 to retrieve the type or the like of the network 10 connected to measuring terminals. The CPU2 reads out information of the classification of each terminal of the pertinent network 10 in accordance with the retrieval result and controls a driver 7 to perform connections in a connecting circuit 5 similarly to a conventional case. Hereafter, the testing operation of the network 10 is performed similarly to the conventional case. |
