公开(公告)号：US5066139A

公开(公告)日：1991-11-19

申请号：US399686

申请日：1989-08-28

申请人： Paulmer M. Soderberg ,  Kristin K. Foss ,  Thomas E. Giles ,  Ralph A. Narciso

发明人： Paulmer M. Soderberg ,  Kristin K. Foss ,  Thomas E. Giles ,  Ralph A. Narciso

IPC分类号： H04B3/46 ,  H04B10/08

CPC分类号： H04B10/07

摘要： A coupler verification test circuit includes first and second circuits one of which is disposed at a head end of an optical fiber network and the other of which is disposed at a subscriber interface unit to be attached to the network when the head end is not operational. The subscriber interface circuit transmits instructions to a transceiver board in the subscriber interface unit for transmission to the network head end whereat the circuit thereat generates either no return signal, an acknowledgment return signal, or a default return signal. The test circuit at the subscriber interface unit then analyzes the return signal and visually indicates to a craftsman whether or not the transceiver board and other components of the SIU are operating correctly, e.g. whether or not the acknowledgement signal was returned and detected.

摘要翻译： 耦合器验证测试电路包括第一和第二电路，其中之一设置在光纤网络的头端，另一个电路设置在用户接口单元，以便在头端不可操作时附接到网络。 用户接口电路向用户接口单元中的收发器板发送指令以传输到网络头端，其中电路不产生返回信号，确认返回信号或默认返回信号。 用户接口单元上的测试电路然后分析返回信号，并向工匠直观地指示收发器板和SIU的其他部件是否正常工作，例如， 是否返回并检测到确认信号。