Optical cable distribution
1. The optical cable distribution plate should calculate the total length of the optical cable laying and the transmission quality requirements of the entire optical fiber according to the retest route, and choose a single-disc laying to reduce the intermediate joints.
2. Optical cables should be laid as much as possible to reduce intermediate joints.
3. The length of the first and second sections of the optical cable on the equipment side should be greater than 1 km as much as possible.
4. On the equipment side, the optical fiber cable with small deviation and good consistency should be selected for the geometric size, numerical aperture and other parameters of the optical fiber.
5. For different laying methods and different ambient temperatures, suitable optical cables should be selected according to the design regulations.
6. After the optical cable is distributed, the joint point should meet the following requirements:
1) When the business copper wire adopts the induction, the average deviation of the induction pitch should be less than 2%, and the individual induction pitch should not be greater than 5%.
2) Pipe optical cable joints should avoid traffic crossings;
3) The empty optical cable connector should fall on the pole or beside the pole for about 1 meter.
7. When the business copper wire adopts the induction, the average deviation of the induction pitch is less than 2%, and the individual induction pitch is not more than 5%.
8. The result of optical cable distribution should be filled in “Relay Section Optical Cable Distribution Diagram”. The format is shown in Table 1 of Appendix III. At the same time, the hop segment where the optical cable of the reel is located and the number of the distribution plate should be marked on the selected optical cable reel according to the distribution diagram.
9. The end of the optical cable should meet the following requirements:
1) The long-distance optical cable line should be regulated by the geographical location of the office (station): the north (east) is the A end, and the south (west) is the B end;
2) For the local telephone optical cable line, in the city where the tandem relay mode is adopted, the tandem office is the A end, and the branch office is the B end. Between two tandem offices, the office with the smaller office number is the A side, and the office with the larger office number is the B side. For cities without tandem offices, the central office with larger capacity (the leading office) is the A-side, and the opposite office is the B-side.
3) The ends of the branched optical cables should obey the ends of the main optical cables. fibconet.com
dwdm fiber cable
dwdm fiber cable
fiber optic cable laying
1. The bending radius of the optical cable should not be less than 15 times the outer diameter of the optical cable, and should not be less than 20 times during the construction process.
2. The traction of the optical cable should not exceed 80% of the allowable gravitational force of the optical cable. The instantaneous maximum pulling force shall not exceed 100% of the allowable tension of the optical cable. The main traction force should be added to the strength member (core) of the optical cable.
3. The prefabrication of the optical cable pulling end can also be made on site. Direct buried or underwater armored optical cable, can be used as mesh sleeve or traction end.
4. In order to prevent twisting and damage to the optical cable during the pulling force, a swivel should be added between the pulling end and the pulling cable.
5. When laying out the optical cable, the optical cable must be released from the top of the cable drum and maintain a loose arc. There should be no twist in the process of laying the optical cable, and it is strictly forbidden to make small circles, surges and other phenomena.
6. When mechanical traction is used for the laying of optical cables, centralized traction, intermediate auxiliary traction or decentralized traction or decentralized traction should be selected according to factors such as traction length, terrain conditions, and traction tension.
7. The tractor used for mechanical traction shall meet the following requirements:
1) The traction tension can be adjusted and has automatic stop performance, that is, when the traction force exceeds the specified value, it can automatically issue an alarm and stop the traction;
2) The traction tension can be adjusted and has automatic stop performance, that is, when the traction force exceeds the specified value, it can automatically issue an alarm and stop the traction;
8. The laying of optical cables must be closely organized and commanded by a special seat. There should be good means of contact during the traction process. Prohibit untrained personnel and work without contact tools.
9. After the optical cable is laid, check whether the optical fiber is in good condition. fibconet.com
dwdm fiber cable
dwdm fiber cable
dwdm fiber cable
