The application results show that the instrument can perfectly satisfy the requirement for automatic testing the communication cable fault point rapidly in a local telephone network.

实践证明，在区域性电信网络中，电信电缆监测仪可以快速地实现电缆故障点自动定位。

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Based on the investigation of development state of the cable sheath fault location devices home and abroad, a new cable sheath fault testing device is designed in this thesis.

本文在对国内外电力电缆护层测距仪的现状进行分析的基础上，设计了一种新型的电力电缆护层故障测试仪。

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The principle of cable-type temperature detector is introduced. The fault mechanism of the device is analysed. A bodily example of life testing is given also.

介绍了电缆型温度探测器的工作原理，分析了损坏性的和漂移性的失效机理，并举例介绍了寿命试验。

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