| 摘要 |
Devices (1) for detecting problems in cable systems (2) comprising cables (20- 24) and loads (31-34) are provided with injectors (11, 12) for injecting first investigation signals into the cables (20-24), receivers (13) for receiving first reflection signals comprising first reflections of the first investigation signals from the cables (20-24), and processors (14). The processors (14) convert the first reflection signals into reflection values and determine differences between the reflection values and reference values. A firstly occurring significant difference of the differences is indicative for the problem, and a moment in time of the firstly occurring significant difference is indicative for a location of the problem. Previously received reflection signals comprising reflections from previously injected investigation signals that have been injected at moments in time at which there were no problems in the cable system (2) may be converted into the reference values. |
