Optical fiber cabling system jumper management specification
For the integrated wiring, the telecommunication room and the equipment room are the gathering places of the three types of services of data, voice and image, and its importance is self-evident. But they have made great efforts in their overall design, equipment shaping, hardware configuration, construction and maintenance and other aspects. However, the construction party often ignores the maintenance and installation guarantees of the largest number of equipment in the telecommunication room and equipment room-cables and optical fiber jumpers, and ignoring this problem will bring a lot of trouble to our computer room management. Therefore, ZR Cable believes that it is necessary to properly manage the jumper.
Generally speaking, reasonable jumper management can be divided into 5 stages: planning, preparation, wiring, testing, and verification.
Jumper Management Specifications
Jumper Operation Specifications
Everything is pre-planned, and no pre-planning is a waste. To do anything, you need to make a detailed plan in advance. For jumper management, the current and future demand planning should be done.
(1.1.1) Change Requests. Various administrative activities, moves, additions or changes (MACs) begin with a change request. The change request must contain all necessary information to initiate the planning process.
(1.1.2) Search records. After receiving the request form, the records should be searched to determine the circuit path used.
(1.1.3) Correct routing. Before determining the correct patch cord length, first find the best route between the ports to be connected. Typically the shortest route through horizontal and vertical cable conduits and must not obstruct or obstruct other jumpers or connectors in the patch panel. When choosing jumper wires, excessive slack should be avoided to ensure a clean appearance. If the jumper is too tight, it will increase the pulling force on the connector, and if the jumper is too loose, it will bring trouble to the management of the jumper and increase the difficulty of the management of the patch panel.
After making the jumper management plan, you should follow the plan made in advance, and then you should do the jumper management preparations. Prepare as much as possible and study management records before implementing management operations. Determine where ports need to be connected and reconnected and the label information for the associated ports.
(1.2.1) Check the type of jumper that needs to be jumped first, and then check the quality of the jumper. In order to ensure that the quality of the jumper is correct, it is necessary to check whether the jumper is damaged. In order to check whether it is damaged, of course, it can be checked from the appearance of the jumper. If there are conditions, it can be checked with a professional instrument.
(1.2.2) Next, check the condition of the connection parts to avoid physical damage to the connection parts.
(1.2.3) Finally, it is necessary to clean the jumper connectors and connection parts.
There are contact and non-contact methods for cleaning fiber optic connectors:
Contact cleaning method:
(1) Wiping paper and anhydrous alcohol, using virgin wood pulp with special processing technology, ultra-low dust, pure texture, efficient water absorption, fine paper, will not scratch the surface of the quilt, use low-dust wiping paper with no Wipe the fiber optic connector with water alcohol;
(2) Non-woven fabric, no lint, strong, without any chemical impurities, silky soft, will not cause allergic reactions, and not easy to fluff and shed, it is produced or tested as optical fiber connectors or pins It is an ideal choice for cleaning the optical fiber connector during use.
(3) Cleaning cotton swabs, specially designed to clean the inside of the ceramic sleeve, or to clean the end face of the ferrule that is not easy to reach in the flange (or adapter);
(4) Professional cleaners, special cleaners for fiber optic connectors use special rolls of wiping tapes, which are housed in a rollable casing, without alcohol, and each cleaning is very effective and produces a new surface, which is convenient and practical.
(1) Ultrasonic cleaning method, which turns the cleaning liquid into an ultrasonic "liquid column" and sends it to the end face of the connector, and recovers and sucks the waste liquid in the same small space;
(2) High-pressure air blowing method, its principle is to apply cleaning liquid on the end face of the connector, and then blow it with high-pressure air at the end face of the connector;
(1.2.4) Check the cleanliness of optical fiber connectors
After cleaning the fiber optic connector, the termination face must be inspected. The general practice is to use a magnifying glass of 100, 200 or 400 times for inspection.
Jumper management personnel, no matter what method is used, it is still difficult to clean some seriously polluted connectors, and it is necessary to use cotton swabs and alcohol and other cleaning solutions to deal with them.
After this series of preparatory work, it means that the wiring work of jumper management can be started.
The installation of the patch panel should be completed according to the operating procedures. Kinks, burrs, pinching, and poor contact during patch cord construction can significantly degrade patch cord performance. To avoid such problems, the following factors should be important to consider:
(1) Bending radius
The minimum allowable bend radius of the jumper is subject to the jumper manufacturer's operating specifications.
The standard specifies that the minimum bend radius for unshielded twisted pair (UTP) should be four times the cable diameter, and for shielded twisted pair eight times the cable diameter. The minimum bending radius of a 2-core or 4-core horizontal optical cable is greater than 25mm. If the bending radius is smaller than this standard, the relative position of the wires may change, resulting in reduced transmission performance.
(2) Jumper tension and stress
Do not use excessive force during wiring, as this may increase the stress on the jumpers and connectors, resulting in reduced performance.
Jumpers do not necessarily need to be bundled. If bundled, the manufacturer's bundling principles should be followed. Do not bundle them too tightly, otherwise the twisted pair will be deformed. Do not over-tighten the clips, it is advisable that each jumper can rotate freely. Use specialized products, and consider choosing products that can be used repeatedly without tools, such as Velcro.
(1) Although the jumper wiring is completed, it may not be considered whether the optical fiber link or copper cable link fully conforms to the operating specifications or the international and national standards for integrated wiring, then the optical fiber or copper cable test should be carried out. After meeting the test standard, it can be judged whether the test standard is passed or not.
(1) It's worth taking the time to do a final visual inspection of the connections. Make sure the jumper slack is not kinked or pinched by the cabinet door.
(2) The last step is to update the record according to the current configuration and close the work order related to the completed change request.
Now the jumper is one of the important components in the integrated wiring system, especially the good management of the jumper in the data center project is particularly prominent. It is believed that as long as the construction management personnel manage and operate the jumper correctly and reasonably, the entire integrated wiring will become a truly advanced, scientific, practical and reliable system.
With the large-scale application of 10G/40G/100G networks in data centers, the installation and management of on-site patch cords becomes more and more important. The quality of patch cord management sometimes affects the overall channel attenuation. Good management ensures that Fibre Channel data transmission is at the highest level. In order to ensure the best state, the process operations such as planning, preparation, wiring, testing, and verification are of great significance to ensure the quality of the system.