What are the technical requirements for optical cable termination?

I. Laying requirements in overhead cables (x0d\ 1) When laying optical cables on the flat ground in overhead cables, use hooks to hang them, lay optical cables in mountainous areas or steep slopes, and use binding methods to lay optical cables. The optical cable connector should be located on a straight rod that is easy to maintain, and the reserved optical cable should be fixed on the rod with a reserved bracket. \x0d\ 2) The optical cable on the overhead pole needs U-shaped telescopic bends every 3-5 gears, and about 1 5m is reserved every1km. \x0d\ 3) Overhead (wall) optical cable shall be protected by galvanized steel pipe, and the nozzle shall be blocked by fireproof mud. \x0d\ 4) Warning signs of optical cables should be hung at intervals of about 4 gears, and should be hung at special sections such as road crossing, river crossing and bridge crossing in aerial cable. \x0d\ 5) Tripod protection tubes shall be added at the intersection of overhead suspension lines and power lines, and the elongation at each end shall not be less than1m.. \x0d\ 6) The poles near the highway shall be covered with luminous rods with a length of 2m. \x0d\ 7) In order to prevent the injury caused by the induced current of the messenger wire, it is required that each pole cable be electrically connected with the messenger wire, and each cable position should be equipped with a cable-type grounding wire, and the messenger wire should be directly connected with the lining ring and directly grounded at the terminal. \x0d\ II。 Requirements for laying optical cables in pipelines (x0d) Before laying optical cables, sub-holes should be placed in the pipe holes, and the sub-pipes with the same color in the 1 hole should always pass through, and the nozzles of all spare sub-pipes should be protected by plugs. \x0d\ 2) Considering the way of manual laying, in order to reduce the loss of optical cable joints, pipeline optical cables should be laid in the whole tray; \x0d\ 3) In order to reduce the traction during laying, the whole optical cable should be laid from the middle to both sides, and personnel should be arranged in each manhole to assist traction in the middle. \x0d\ 4) The hole position of the optical cable should meet the requirements of the design drawings, and the pipe hole must be cleaned before laying the optical cable in the pipeline. The remaining length of the sub-hole in the hand hole should be exposed to the tube hole about 15cm. \x0d\ 5) The interface between the sub-tube in the handhole and the plastic textile network management tube is bound with PVC tape to avoid sediment infiltration. \x0d\ 6) Optical cables shall be installed in manholes. If there is a support plate in the manhole, the optical cable should be fixed on the support plate; If there is no support plate, the optical cable should be fixed on the expansion bolt, and the hook of the expansion bolt should face down. \x0d\ 7) The cable outlet hole should not be bent in the range of 15cm. \x0d\ 8) Plastic signs are used on each handhole, as well as the optical cable and ODF rack in the computer room to show the difference. \x0d\ III。 Requirements for laying optical cables on the wall \x0d\ 1) Except for the upper part of underground optical cables, it is forbidden to lay armored or oil-hemp optical cables on the wall. \x0d\ 2) When crossing a street or a passage in a hospital, the lowest point of the cable should not be less than 4.5m from the ground. \x0d\ 3) The stringing scheme adopts 7/2.2 and 7/2.6, the bracket spacing is 8 ~10m, and the distance between the terminal fixing and the first intermediate bracket should not be more than 5m. \x0d\ 4) When the messenger wire is laid horizontally or vertically on the wall, the terminal fixing and intermediate support of the messenger wire shall comply with the provisions of Code for Acceptance of Communication Line Engineering in Local Network. \x0d\ 5) The fixing screws must be on the same side of the optical cable. Optical cables should not be laid along the wall by hook type. \x0d\ 6) When it is unavoidable, a sleeve should be added to the optical cable for protection. When the optical cable is laid along the hanging line extending out of the indoor floor wall, the hook distance is 1 m. \x0d\ IV。 Requirements for laying optical cables in the office \x0d\ 1) Optical cables in the office shall be bound through wire racks and bends (front and back), and the vertical ascending section shall be bound in sections (the length of the section is not more than 1m). The upper and lower walkways or walls shall be bound for 2 ~ 3 times every 50 cm, and the binding parts shall be padded with rubber pipes. \x0d\ 2) When the procedures of local optical cables have not been changed, PVC flame-retardant tape should be used for fire prevention treatment, and the incoming holes should be blocked with fire-retardant mud. \ x0d \ 3) The terminal board of ODF frame shall clearly indicate the local direction and serial number of each terminal. \x0d\ 4) The reserved coil of optical cable in the office is bound and fixed on the rack or wall, and the optical cable in the base station can be reserved on the terminal pole outside the base station. \x0d\ 5) Usually, the local telephone optical cable is led from the hand well in front of the local telephone office to the optical transmission equipment through the underground wire entry room. Optical cables in the office should be hung with identification plates made in accordance with relevant regulations for easy identification. \x0d\ 6) The optical cable shall be placed in a safe position in the incoming room, and protective measures shall be taken when it is in a position vulnerable to external damage. \x0d\ 7) The optical cables in the office should be laid neatly and beautifully, and the optical cables laid along the online well should be tied to the online reinforcement bar. \x0d\ 8) The optical cable reserved by the equipment side according to regulations can be left in the transmission room or the incoming room. The reserved optical cable has special requirements and should be reserved according to the design requirements. \x0d\ 9) After the optical cable is introduced into the local station, the water inlet hole shall be blocked, and no water seepage or leakage is allowed. \ x0d \ v. Cable termination \x0d\ 1) Reserve enough optical cables according to regulations or design requirements. \x0d\ 2) The installation position of optical cable terminal connector in the machine room should be stable and safe, away from heat sources. \x0d\ 3) The terminated optical cable and single-core flexible optical fiber led out from the optical cable terminal connector shall be wired according to ODF specifications, and protected and bound according to the design requirements. \x0d\ 5) The connector of single-core soft fiber shall be inserted into the optical distribution frame (distribution frame) according to the design requirements. \x0d\ 6) The interface end of optical fiber distribution frame (switchboard) without soft optical fiber shall be covered with plastic dust cover. \x0d\ 8) The coil wire of soft optical fiber in the rack shall be larger than the specified radius of curvature. \x0d\ 9) At the end of optical fiber distribution frame (ODF), the metal parts are led out by copper-core PVC sheathed cable and connected to the protective ground wire. \x0d\ 10) Soft optical fiber shall be marked with direction and number in a conspicuous position.