Optical cable reel measurement work is as follows:
1. Inspection of optical cable equipment, factory test records, inspection of optical cable specifications, quantity and appearance.
2. Preparation of construction tools, machinery, instruments and vehicles. Construction tools and machinery are determined according to the type of construction.
3. Prepare for construction technology management. Familiar with engineering design, learn relevant content of construction acceptance regulations, prepare test forms for completion technical data records, and formulate construction quality assurance measures.
4. On-site inspection of the optical fiber cable should test the attenuation constant of the optical fiber and the length of the optical fiber, and carefully check whether there are cracks and non-uniformity along the length direction. Optical time domain reflectometer (0TDR) is generally used for inspection. If there is no such instrument, light source and optical power meter can be used for simple test. The test results should be consistent with the data provided by the manufacturer.
5. The electrical indicators of the copper wires used for business communication and remote supply in optical cables shall comply with the regulations on the electrical indicators of national communication cables.
6. After the inspection of the single reel, the sealing of the end of the optical cable and the packaging of the cable reel should be restored, and the reels should be numbered uniformly, and the mark of the outer end of the reel and the length of the optical cable should be indicated.
The inspected optical cables are discharged separately according to the category. Those with short sections should be arranged on one side of the same type of optical cable reel. At present, the nominal length of the optical cables of various manufacturers is not exactly the same as the actual length. Some are long enough to mark the cable length according to the conversion factor, some are marked with the length mark on the cable or the length of the digital tape inside the cable, and some are more fragile. The length of the optical fiber is the cable length (then OTDR is marked in the brackets). Some manufacturers have a positive deviation of several meters to 50m according to the requirements, and some may have a negative deviation. In order to match the reel according to the correct length, ensure the safe laying of the optical cable and not waste the optical cable, it is very necessary to retest the length of the optical cable in the single reel inspection.