发明名称 |
Submarine equipment and fault-locating method for a submarine communication system |
摘要 |
A fault locating method and submarine equipment for detecting the location of a fault developed in a communication system including an optical submarine cable and submarine equipment such as repeaters and branching units inserted in the cable, which is supplied with operating current via a feed line of the cable. The submarine equipment has a main processing circuit for transmitting signals via the submarine cable; an power unit inserted in the feed line so as to supply operating power for the main processing circuit by receiving the operating current from the feed line; a nonlinear resistance device which is connected to the feed line and the resistance value of which increases as a current flowing through it decreases, and a charging/discharging resistor disposed in parallel to the nonlinear resistance device. The fault locating method detects the location of an open-circuit fault occurring in the cable by measuring the capacitance of the open-circuit cable. The capacitance measurement is quickly and accurately carried out by charging and discharging the cable capacitance through the charging/discharging resistor. |
申请公布号 |
GB2275152(B) |
申请公布日期 |
1997.01.15 |
申请号 |
GB19930024453 |
申请日期 |
1993.11.29 |
申请人 |
* FUJITSU LIMITED |
发明人 |
YOSHIYUKI * INOUE;MAKOTO * SUMITANI |
分类号 |
G01R31/08;G01R31/02;H04B3/44;H04B3/46;H04B17/02;(IPC1-7):H04B3/44 |
主分类号 |
G01R31/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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