Fiber Patch Cord Management GuideThe fiber jumper is likely to be the weakest part in the Copper cable and fiber optic

network infrastructure. In the management of both copper cable and fiber jumpers, we must

follow the correct operating procedures in order to achieve the best performance and reliability .

At all levels to implement the best practices can minimize related costs.

Best practices of fiber patch cord management can be divided into four parts:

Planning

Preparation

Wiring

Verification

Planning

Read design guidelines carefully ,outfit fiber jumper

Ensure that you have grasped  the specification and design of fiber-optic cabling. The jumper

must match with the cable has been installed, because the different types of fiber optic jumper

can not be mixed.

Efficient routing

 

To select the appropriate length of the jumper, we must first determine the best route between

the two connection points. Usually we can choose the shortest route through horizontal and

vertical cable channel, and must not impede or hinder the other jumpers or connectorsin

the patch panel.

 

Avoid the jumper pass through a gridlocked cable channel.

Determine the vertical and horizontal dimensions

 

Determine the fiber jumper optimal routing obtain the required length by sum of the horizontal

and vertical distance

Try to reduce the relaxation

 

When you select, install and  cross-connect the fiber patch cable, should avoid excessive slack

and make sure fiber cable have a neat appearance. Jumper too tight will increase the tension on

the connector, while over-relaxation jumper will bring trouble to fiber patch cable management,

and more increasing the difficulty of the management of patch panels.

Efficient management

Ensure that the appropriate length jumpers have been ready, fiber patch panels have been

installed the right kind of cable management accessories.

 

In general, every two rack unit needs to use a horizontal jumper cable management. In the

specific operation, we need depend on fiber optic patch panels or light guide Interconnect Unit

(LIU) types.

At the part of fiber optic patch panel or LIU, you must make the fiber jumper symmetric

extension along the both sides of the vertical cable management pipeline to avoid one side

overload.

Old and new cable maintenance

Do not mixed use different jumper cable with core diameter.  Different fiber optic standard

connector have been color-coded to help users easily to avoid confusion.

Diameter of the cable core

 

Fiber jumper cable core diameter must be same with the main cable. When a 62.5μm jumper

connected with and  50μm trunk fiber optic cable, there will be a larger attenuation

Fiber optic safety precautions and responsibility

 

The optical transmission of information with the laser may cause damage on the retina but can

not be cured. Do not look directly at the power cable, a microscope or other magnifying devices

may not be connected to the power fiber optic. Be sure to wear appropriate eye protection

equipment, and ensure that unused ports have been covered.

Preparation

In order to reduce the interruption, try to do more preparation before the implementation of

management activities.

Research management records

Determine the location of the port need to connect or reconnect. To ensure that the technician

clearly understand the task information, including the tag information of the relevant port.

 

Check the fiber jumper

 

Must ensure that the type and quality of the jumper accuracy, clean, and in good condition.

Should check the fiber jumpers, excluding physical damage, including:

 

1. Stress mark on the sheath due to the bending stress

2. The fiber optic  is pulled out from the connector

3. There are cracks or scratches found the end of the fiber in the connector through

the fiber optic inspection microscope

 

In the fiber optic connections, cleaning is essential and so must  carefully Attorney the following:

1. The connector end of the jumper

2. Connector end of the patch panel

3. Connector end of the network equipment

Wiring

Distribution frame work once begin, we must immediately complete each phase of the mission

based on best practices。 Fiber Jumper operation

 

Knot, burr, pinch, and poor connection are likely to substantially reduce the performance of fiber

jumpers. To avoid such problems, should focus on the following factors:

 

Bend Radius

 

The required minimum bend radius of fiber optic jumper cable depend on core diameter. 1.6 mm

and 3.0 mm cable core, the minimum no-load bending radius is 1.4 inches (3.5 cm), but the

install PATCH Plus of MPO jumpers cable minimum bend radius is 10 times of the core diameter.

Exceed the bending radius may lead to more signal attenuation, and adversely affect the

performance information channel。Tensile and Stress

 

In the process of  Wiring, do not use excessive force. Or may increase the stress on jumpers and

connectors, resulting in performance degradation. If you have to pull, it indicates that there

must be some problem. Find and fix the problem, and then the next step.

 

Banding

Bundled cable enables patch panels looks neat, but if the strapping too tight, it will increase the

probability of extrusion. Do not over-tighten the clamp, make each jumper free rotation is

appropriate. Please use the specific products, consider select the product without tools for

repeated use, such as Velcro.

 

Make Jumper through the cable channel

 

If the existing jumper the appropriate length can be used again. At this point, should completely

remove the jumper to make it through the cable channel, re-wiring. This is the only way to avoid

jumper tangle, knot or deformation.

 

The steps of removal and adding fiber jumper

 

1 find the TR / FD or ER two regions' existing circuit

2 Remove the plug at the end of  jumper

3 Gently upward to lift the jumper, get up slowly until you can perceive to mobile

4 jumper removed from the line set

5 Locate the other end , and allocated under the plug

6 Determine the location of the new circuit

7 plug one end of the jumper into the fiber coupler

8 make sure jumper routing in place

9 In the region away from the switch or the computer port, find the location of the new

connection point

10 plug the other end into the fiber optical coupler

 

Verification

 

The last visual inspection, closed patch panel

      

Due to an error could lead to costly disruption and rework, so wiring must be success one time.

Spend more time on the connection to the final visual inspection is worth doing. After the patch

panel installed in the cabinet must take the cabinet firmly locked up. Ensure jumper relaxation

part not kinked, not griped by cabinet door .

 

Update records

The final step is to update records according to the current configuration, and request related

work orders for completed changes.

 

 

End-to-end cabling connection of all types only as strong as their weakest link, so you need to be

sure you manage patch cords properly. Patch panels that look

like this compromise the performance and relilty of the network.

 

planning-moves, adds or changes should be with a change request, which may be paper based

or electronic

attempting to save time by not following proper cord routing will eventually lead ti mistakes and

difficulty routing cords.

the performance of the end-to-end channels determined by the lowest performing component.

Make sure you know the specification and design of your cabling infrastructure, and ensure

cords are matched to the canling

once you know you have the right cords, consider how they will be installed on the patch panel.

Key factors are routing ,

patch cord length and density. For efficient routing, find the best path between the ports to be

connected.

when working with optical fiber cords, pay attention to the core diameter

A large attenuation penalty will occur when using 62.5μm jumper connected with and  50μm

cabling plant, and vice versa

Single mode cords must be used with single mode cabling, also matching the mode field

diameter of the installed cable

Inspect fiber cords for physical damage including stress marks from sharp bends on the

sheath ,or damage to connectors

cleaner is vital in fiber optic connection, including lc. sc and mpo connection. Special care is

needed with connector ends on patch cords.

connector ends on park, and connector end on network equipment.

Ensure unused optical fiber ports are covered. The laser used in optical fiber may cause damage

to the retina. Never look into am energized fiber

Always maintain the correct tend radlus for copper and optical cords

Be careful not to use excessive force during the patching process. This can stress cords and

connectors reducing performance

If you need to use force when pulling a cord, something is wrong. and fix it before proceeding

Correct bunlding of cords is also key to efficient cord management

Any unused cords should always be removed from the panel before new ones are added.

Accurate labeling is essential ,labels should be visible and durable