1. What is fiber jumper? Fiber optic patch cords are mainly used to connect network devices at both ends and are mainly used in the following three scenarios. - Between devices
- Between equipment and fiber distribution frame
- Between fiber optic distribution frames
Classification of optical fiber Classification by optical fiber interface - FC connector: Uses metal sleeve for external reinforcement and is fixed with screw fasteners. Generally used on ODF (mostly used on MDF)
- SC connector: connects GBIC modules, has a rectangular shell, and the pins are locked and fixed without rotation. (Most commonly used on routers and switches)
- ST connector: Commonly used in ODF, the shell is round and fixed with screw fasteners. (ST is usually used for 10Base-F.)
- LC connector: used to connect SFP modules, it is made of an easy-to-operate modular jack (RJ) locking mechanism. (Commonly used in routers)
For more details, see: What are the types of fiber optic connectors? How to choose According to length There are 1.5m, 2m, 3m, 5m, 10m, 15m and 20m to choose from, and can also be customized. According to usage - LC interfaces are often used between devices.
- In ODF, FC interface is often used to connect to the remote core.
- SC interface is commonly used in ODF and equipment.
2. What are the layout principles for fiber optic patch cords? In order to reduce the difficulty of subsequent operation and maintenance, it is best to follow the following principles during deployment. - Fiber optic patch cord operations must follow the principles of less cross-connection, neat and beautiful wiring, easy operation, and less space.
- The length of the fiber optic patch cord must be controlled within the remaining length range of 500 mm.
- Patch cables of inappropriate length shall not be used, and the use of flanges to connect two patch cables is not allowed.
- The curvature radius of each fiber jumper should be greater than 400mm.
- Connect one end of the optical fiber to the device port, pass the other end through the wiring trough, pull out the fiber tray, wind the excess optical fiber into a circle, lay it on the fiber tray, wrap it with a fiber tape, push it onto the fiber tray, and connect the other end to the device or ODF rack.
- General requirements for fiber optic cabling: ① For fiber optic cabling from the top, arrange the cable downward on the outside of the ODF rack, select the most suitable disk fiber column with the remaining fiber, route it upward on the inside of the ODF rack, horizontally along the bottom edge of the rack, and vertically upward to the corresponding terminal. ② A fiber jumper is only allowed to go up once (along the outside of the ODF rack) or up once (along the inside of the ODF rack) in the ODF rack. It is prohibited to entangle, cross, or hang between multiple fiber optic columns, that is, no fiber optic winding is allowed on the top edge of each fiber column. ④ All jumpers must be laid inside the ODF cabinet, and it is strictly prohibited to lay or fly outside the cabinet.
- Do not wrap a single fiber between multiple fiber trays.
- When the optical fiber passes through the cabinet, use a sleeve to protect the optical fiber from being squeezed by other cables. If there is a distribution frame, lay the optical fiber in the distribution frame.
- When connecting optical fiber, do not pull it too tight and make the connector at a right angle.
- All optical fibers must be laid in the wiring trough. Do not lay optical fibers or spread cables outside the rack.
- Do not use an optical fiber that is insufficiently long. Do not use an adapter to connect two optical fibers.
- Clean the fiber end face when inserting the fiber. In a production environment, do not touch the fiber end with your hands or let the fiber end touch objects.
- When connecting the optical fiber, insert the optical connector vertically into the optical port. The entire optical fiber connector should be inserted into place. The commonly used SC and LC connectors will have a click sound indicating that they are in place.
- Do not pull the optical fiber forcibly. Otherwise, the optical fiber and connector may break.
- Do not twist the fiber. To avoid twisting the fiber, coil the fiber according to its natural slack.
3. What is the process of laying out fiber optic patch cords? After understanding the concept and wiring principle of fiber optic patch cords, you can start to lay out fiber optic patch cords, which includes six steps: - 1. Preparation
Prepare tools, materials and hardware information according to business needs. - Tools: marker, tube sleeve, label, oil pen, notepad, pliers, electrical tape.
- Materials: optical fiber, optical module, optical fiber binding tape (nylon adhesive tape). The quantity, type or length of the corresponding materials depends on the requirements.
- Hardware preparation: Understand the IDC, device location, and ODF, and record them.
- Get ribbons in various colors to distinguish fiber optic patch cords for different purposes.
- 2. Choose optical fiber
- Select the appropriate optical fiber according to the interface type and length.
- Select the corresponding optical fiber according to the interface, beam splitter, and flange head on the fiber splitter box.
- Select the length of the optical fiber so that the excess optical fiber length is within 50 cm.
- 3. Laying optical fiber
Arrange the optical fibers according to the fiber jumper rules. - Locate the port, splitter, or fiber optic splitter.
- Remove the fiber optic connector.
- Plug the connector on the fiber optic end into the corresponding device port.
- Lay optical fibers along the wiring area to corresponding devices.
- Plug the connector on the other end of the fiber into the corresponding device port.
- 4. Attach the label
- To facilitate equipment maintenance, labels should be affixed to both ends of each optical fiber 1cm to 2cm away from the connector.
- All fiber labels must be machine marked, no handwriting is allowed.
- When placing multiple optical fibers at the same time, first mark the fibers with a marker to avoid confusion, and affix fiber labels after placement.
- Both ends of the optical fiber need to be labeled.
- After affixing, the labels should face the same direction. For vertical cables, the head of the label usually faces left. For horizontal cables, the head of the label usually faces downward.
5. Bundling optical fibers - Use optical fiber bundling tape to bundle optical fibers at a certain interval.
- When bundling optical fibers, the spacing between the bundling tapes is 20 cm.
- When the optical fiber is bent, tie the binding tape on both sides of the corner to prevent the fiber core from being broken due to excessive force at the bend. The bending radius of 2mm optical fiber cannot be less than 30mm. The bending radius of 3mm optical fiber cannot be less than 40mm.
- The contact surface between the strapping tape and the optical fiber is a rough surface, and the hook surface of the strapping tape does not contact the optical fiber.
- The optical fibers should be straightened before bundling. The optical fibers should be tied tightly with the optical fiber bundling tape. Do not tie the optical fibers too tightly. Do not cross the optical fibers.
6. Finishing work - Tool organization: Organize the tools used during installation into designated locations.
- Residue recycling: Recycling project residues.
- Clean up debris: Clean up the garbage generated by the installation and ensure a clean environment.
- Complete the installation report: Forward the on-site installation report to the relevant person in charge. If the site is running normally, notify the operation and maintenance personnel that the fiber jumper has been completed.
Standardized fiber optic patch cords can make the optical cable look neat, facilitate future project maintenance, and make it easier to find your fiber or locate faults. This is a good thing that will last forever. Source: fibermall |
