Transmission line connection testing apparatus
专利汇可以提供Transmission line connection testing apparatus专利检索，专利查询，专利分析的服务。并且PURPOSE: To test a connecting condition simply and positively, by supplying predetermined forward- and backward phase pulse train signal in a duty period to a pair of transmission line for receiving signals in a differentially and deriving a judgement from their integral output levels.
CONSTITUTION: By a test signal transmitting unit 7, pulse train signals of relatively forward and backward phases outside a duty ratio of 50% are supplied to a pair of transmission line 2, the both end of which being terminated with terminating resistances 1, 6 and connected to connecting boxes 3W5. Further, the signal is received through a differential receiver 20 of a test signal receiving unit 8, integrated by resistances R
1 , R
2 and capacity C, and compared by comparing voltage and comparing circuit 22 from a comparing voltage generating circuit 21. When the integral output level is almost equal to zero, the connection is judged as normal and an output is not generated from a circuit 22 and the LEDD is not ignited and when said level is judged as abnormal with a level higher than zero, the LEDD is ignited for testing whether the connection condition is corrected or not in a simple and positive manner.
COPYRIGHT: (C)1986,JPO&Japio，下面是Transmission line connection testing apparatus专利的具体信息内容。
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