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What should be paid attention to when optical cable fault is judged and handled?

Matters that should be paid attention to in the diagnosis and treatment of optical cable faults:


1. Matters needing attention when troubleshooting and repairing
①When the long-distance optical cable line at the boundary of the province or the junction of two maintenance units breaks down, the two adjacent maintenance units should check and carry out emergency repairs at the same time.
②All levels of optical cable line maintenance units should accurately grasp the cable line information.Proficient in testing methods of obstacle points of optical cable line, able to accurately analyze and determine the location of obstacle points.Always maintain a certain rush repair strength, and master the line rush repair operation procedures and the use of rush equipment.
③Optical cable maintenance personnel should be familiar with optical cable line information, master the line emergency repair operation procedures, obstacle testing methods and optical cable connection technology, strengthen the management of emergency repair vehicles, ready for emergency repair at any time.Special equipment, tools, instruments, machinery and tools as well as traffic vehicles used for emergency repair must be relatively concentrated, with lists made and ready at any time, and generally may not be lent or misappropriated.


2. Matters needing attention in the processing process
①In the process of urgent repair of optical cable lines, attention should be paid to the safe operation and use of instruments and equipment. Before the optical fiber fault test, the optical fiber to be tested should be disconnected from the optical terminal machine at the opposite end.
②Once the fault is eliminated and passed the strict test, immediately notify the maintenance department to verify the transmission quality of the cable, and restore communication as soon as possible.
③Carefully make the fault inspection and repair record.After troubleshooting, the line maintenance department should organize relevant personnel to analyze the cause of the failure, sort out the technical data and report it in time according to the relevant regulations.Summarize experience and lessons and put forward improvement measures.
④Intervene or replace optical cable, should use the same type of optical cable with the same manufacturer, and as far as possible to reduce optical cable joint and as far as possible to reduce the loss of optical fiber connection.The length of the optical cable involved or replaced in the process of fault should generally not be less than 200m, and the same manufacturer and model of optical cable should be used as far as possible. The average joint loss of single-mode optical fiber should not be greater than 0.2dB/.The bending radius of the cable after fault treatment and modification should not be less than 15 times of cable diameter.






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