Installing and routing the fiber jumpers

Fiber connectors...2 Fiber holes on the top of the cabinet...3 Fiber holes on the bottom of the cabinet...3 Upward cabling for fiber jumpers...5 Attaching a label...6 Downward cabling fo

10 Installing and Routing Fiber Jumpers 1

8.1 Fiber Jumpers 2

8.2 Installing and Routing External Fiber Jumpers 3

10.1.2 The Fiber Hole and Corrugated Pipe 3

10.1.3 Procedure for Upward Cabling 4

10.1.4 Procedure for Downward Cabling 7

10.2 Installing and Routing Internal Fiber Jumpers 9

10.2.1 Routing Fiber Jumpers Between Boards 9

10.2.2 Routing Fiber Jumpers Between the Subrack and COA 12

10.3 Checking the Fiber Jumper Installation 14

Fiber connectors 2

Fiber holes on the top of the cabinet 3

Fiber holes on the bottom of the cabinet 3

Upward cabling for fiber jumpers 5

Attaching a label 6

Downward cabling for fiber jumpers 8

Fiber spooling modes 10

Routing fiber jumpers between Boards 11

Routing fiber jumper between the subrack and COA 13

10 Installing and Routing Fiber Jumpers About This Chapter

 Note

Remove the side doors and the front door before installing and routing cables Reinstall all these doors after installing and routing all cables and fibers Refer to Chapter 12 "Installing the Doors of the Cabinet"

This chapter guides you to install and route fiber jumpers

The fiber jumpers of the OptiX OSN 3500 are divided into internal fiber jumpers and external fiber jumpers

Internal fiber jumpers are used for connecting optical interfaces within a cabinet While external fiber jumpers are used for connecting optical interfaces of a cabinet with those of other cabinets or peripherals

The following table lists the contents of this chapter

Section Description

8.1Fiber Jumpers Describes the connectors and types of the fiber jumpers 8.2Installing and Routing

External Fiber Jumpers

Describes how to install and route the external fiber jumpers.

10.2Installing and Routing Internal Fiber Jumpers

Describes how to install and route the internal fiber jumpers.

10.3Checking the Fiber Jumper Installation

Describes the check points of fiber installation.

8.1 Fiber Jumpers

The fiber jumpers are used to connect the optical boards on one subrack with those in other cabinets or other equipment All fiber jumpers can be transferred by

an external optical distribution frame (ODF)

Figure 1.1 shows the connectors used for the OptiX OSN 3500

Protective cap

FC/PC connector

LC/PC connector

SC/PC connector

Protective cap

Protective cap

Figure 1.1 Fiber connectors

Caution

The optical interfaces of the SLT1/SLO1/R1SLQ1/R1SL4/R1SLD4/R1SL1 cannot be connected with a fixed optical attenuator The “OUT” optical interfaces

of all Optical boards cannot be connected with a fixed optical attenuator

8.2 Installing and Routing External Fiber Jumpers

This section describes the procedure to install and route external fiber jumpers The corrugated pipe is used to protect the fibers between the cabinet and the ODF

10.1.2 The Fiber Hole and Corrugated Pipe

The Fiber Hole

There are fiber holes on the top and bottom of the cabinet Route the fiber jumpers through the fiber holes

Figure 1.1 and Figure 1.2 show the fiber holes

Figure 1.1 Fiber holes on the top of the cabinet

Fiber hole Fiber hole

Figure 1.2 Fiber holes on the bottom of the cabinet

The Corrugated Pipe

When routing fiber jumpers outside the cabinet, a corrugated pipe or a winding pipe must be added for protecting the fiber jumpers

One corrugated pipe can contain 12–15 pieces of fiber jumpers One 12 mm winding pipe can wind thirty pieces of fiber jumpers, while one 6 mm winding pipe can wind eighteen pieces

In this section the corrugated pipe is taken as an example.

Appropriate length of the corrugated pipe is required This length is the distance from the cabinet to the ODF plus the length the pipe will extend into the cabinet and the ODF (so long as the fiber jumpers do not touch the upper beam when routing inside the cabinet)

10.1.3 Procedure for Upward Cabling

Purpose This procedure guides you to connect and route the fiber

jumpers between the subrack and the ODF.

Tools/Materials Corrugated pipe or winding pipe

Binding strap Labels

Prerequisites The ODF in the equipment room has been installed

properly, with interfaces reserved for use.

Required/As needed Required if the fiber jumpers are upward routed.

Caution

The bend radius of the fiber jumper must be greater than its minimum curvature radius Specifically, the minimum curvature radius for the 2 mm fiber jumper is 40

mm, and that for the 3 mm fiber jumper is 60 mm

 Note

Routing the fiber jumpers on the right of the cross-connect and timing board is taken as an example in the description below Routing on the left side is the same

Step 1 Attach temporary labels to both ends of the fiber jumpers

Step 2 Measure and cut the corrugated pipe and wrap the incision with adhesive tape to

protect the fiber jumpers

Step 3 Route the fiber jumper through the corrugated pipe It is forbidden to force the

fiber jumper in

Step 4 Route the corrugated pipe into the cabinet (3cm) through the fiber hole on the top

of the cabinet

Step 5 Route the fiber jumpers downward along the fiber path on the right of the cabinet

and then into the subrack cabling trough See Figure 1.1

Cable distribution plate

Subrack cabling trough

Fiber hole

Fiber path

Figure 1.1 Upward cabling for fiber jumpers Step 6 Route the fiber jumpers out of the subrack cabling trough

Step 7 Take the protective cap off the fiber connector and clean the fiber connector with

special cleaning tissue Keep the protective caps well for possible use in the future

Step 8 Align the fiber connector against the optical interface and insert it in along the

slide rail with appropriate strength until you hear a click

Step 9 Coil the redundant fiber jumpers in the fiber spool box

Step 10 Trim the fiber jumpers and bundle them with binding straps For details, refer to

Appendix E "Binding Strap for Fiber Jumpers" Do not bind the fiber jumpers too tight

Step 11 Install and route the fiber jumpers on the ODF side

Step 12 Remove the temporary labels on the cables

Step 13 Fill in the labels referring to Appendix D "Engineering Labels for Cables"

Step 14 Attach the labels 2 cm away from the connectors at the two ends See Figure 1.1

TO:

A03 33 33 33 33 Label

Fold to the right

Fold upwards

Figure 1.1 Attaching a label

End

10.1.4 Procedure for Downward Cabling

Purpose This procedure guides you to connect and route the fiber

jumpers between the subrack and the ODF.

Tools/Materials Corrugated pipe or winding pipe

Binding strap Labels

Prerequisites The ODF in the equipment room has been installed properly,

with interfaces reserved for use.

Required/As needed Required if the fiber jumpers are downward routed.

Caution

The bend radius of the fiber jumper must be greater than its minimum curvature radius Specifically, the minimum curvature radius for the 2 mm fiber jumper is 40

mm, and that for the 3 mm fiber jumper is 60 mm

 Note

Routing the fiber jumpers on the right of the cross-connect and timing board is taken as an example in the description below Routing on the left side is the same

Step 1 Attach temporary labels to both ends of the fiber jumpers

Step 2 Measure and cut the corrugated pipe and wrap the incision with adhesive tape to

protect the fiber jumpers

Step 3 Route the fiber jumper through the corrugated pipe It is forbidden to force the

fiber jumper in

Step 4 Route the corrugated pipe into the cabinet (3cm) through the fiber hole on the

bottom of the cabinet

Step 5 Route the fiber jumpers upward along the fiber path on the right of the cabinet and

then into the subrack cabling trough See Figure 1.1

Fiber hole

Corrugated pipe

Fiber path

Subrack cabling trough

Figure 1.1 Downward cabling for fiber jumpers Step 6 Route the fiber jumpers out of the subrack cabling trough

Step 7 Take the protective cap off the fiber connector and clean the fiber connector with

special cleaning tissue Keep the protective caps well for possible use in the future

Step 8 Align the fiber connector against the optical interface and insert it in along the

slide rail with appropriate strength until you hear a click

Step 9 Coil the redundant fiber jumpers in the fiber spool box

Step 10 Trim the fiber jumpers and bundle them with binding straps For details, refer to

Step 12 Remove the temporary labels on the cables.

Step 13 Fill in the labels referring to Appendix D "Engineering Labels for Cables"

Step 14 Attach the labels 2 cm away from the connectors at the two ends

End 10.2 Installing and Routing Internal Fiber Jumpers

This section guides you to install and route internal fiber jumpers Internal fiber jumpers are used to connect boards in a subrack or connect the boards with other devices (COA, for example) in the cabinet

Internal fiber jumpers can be routed:

 Between optical interface boards in the subrack In this case, the fiber spool box is installed above the subrack

 Between the subrack and other devices (for example, SS62COA) in the cabinet In this case, the fiber spool box is installed below the subrack and above the COA

For details of the fiber spool box, refer to Chapter 8 "Installing the Fiber Spool Box" For details of the COA, refer to Chapter 7 "Installing the COA and DCM"

 Note

This section describes the routing of fiber jumpers at the left side of the cross-connect and timing board The routing at the right side is the same

10.2.1 Routing Fiber Jumpers Between Boards

Purpose This procedure guides you to connect and route the fiber

jumpers between optical boards within one cabinet.

Tools/Materials Binding strap

Fiber spool box Labels

Prerequisites The subrack and the fiber spool box are installed properly in

the cabinet with interfaces reserved for use.

Required/As needed Required there are fiber jumpers between optical boards in a

cabinet.

Step 1 Attach a temporary label to each end of the fiber jumper.

Step 2 Remove the protective cap from the optical connector at each end of the fiber

jumper and clean the optical connectors with special cleaning tissue

Step 3 Align one fiber connector against the optical interface and insert it in along the

slide rail with appropriate strength until you hear a click

Step 4 Insert the fiber jumper downward to the subrack cabling trough below the optical

board and route it leftward

Step 5 Lead the fiber jumper out of the subrack cabling trough then through the cabinet

cabling channel, and route it upward through the orderwire fixing frame to the fiber spool box

Step 6 Spool the fiber jumpers

 If the optical interface board is at the same side of the cross-connect board, operate as shown in Figure 1.1 (a) or (c)

 If the optical interface board is at different side of the cross-connect and timing board, operate as shown in Figure 1.1 (b) or (d)

(a)

(b)

(c)

(d) Tunable optical attenuator

Tunable optical attenuator (a) Without attenuator (the source and destination

of fiber jumpers are in the same side of the cross-connect and timing board)

(b) Without an attenuator (the source and destination of fiber jumpers are in different sides of the cross-connect and timing board) (c) With attenuators (the source and destination of

fiber jumpers are in the same side of the cross-connect and timing board)

(d) With attenuators (the source and destination of fiber jumpers are in different sides of the cross-connect and timing board)

Figure 1.1 Fiber spooling modes

cabling trough to the optical interface board at the other end See Figure 1.1.

Power Distribution Unit

Fiber spool box Orderwire frame

Figure 1.1 Routing fiber jumpers between Boards

Step 9 Align the connector of the other end against the optical interface, and insert it in

along the slide rail with appropriate strength until you hear a click

Step 10 Bind the fiber jumper using binding strap

Step 11 Remove the temporary labels on the cables

Step 12 Fill in the labels referring to Appendix D "Engineering Labels for Cables"

Step 13 Attach the labels 2 cm away from the connectors at the two ends

End

10.2.2 Routing Fiber Jumpers Between the Subrack and COA

Purpose This procedure guides you to connect and route the fiber

jumpers between the subrack and the COA.

Tools/Materials Binding strap

Labels

Prerequisites The subrack and other devices are installed properly in the

cabinet with interfaces reserved for use.

Required/As needed Required if the COA is installed.

Step 1 Attach a temporary label to each end of the fiber jumper

Step 2 Remove the protective cap from the optical connectors at both ends of the fiber

jumper and clean the optical connectors with special cleaning tissue

Step 3 Align one fiber connector against the optical interface and insert it in along the

slide rail with appropriate strength until you hear a click

Step 4 Insert the fiber jumper downward to the subrack cabling trough below the optical

board and route it leftward

Step 5 Lead the fiber jumper out of the subrack cabling trough then through the cabinet

cabling channel, and route it downward to the fiber spool box

Step 6 Spool the fiber jumper See 10.2.1 I I Step 6Figure 1.1

 If the optical interface board is at the same side of the cross-connect and timing board, operate as shown in 10.2.1 I I Step 6Figure 1.1 (a) and (c)

 If the optical interface board is at different side of the cross-connect and timing board, operate as shown in 10.2.1 I I Step 6Figure 1.1 (b) and (d)

Step 7 Lead the fiber jumper out of the fiber spool box, route it downward to connect to

the optical interface See Figure 1.1

OptiX OSN 3500

Power Distribution Unit

Fiber spool box

COA

Figure 1.1 Routing fiber jumper between the subrack and COA Step 8 Bind the fiber jumper using binding strap

Step 9 Remove the temporary labels on the cables

Step 10 Fill in the labels referring to Appendix D "Engineering Labels for Cables"

Step 11 Attach the labels 2 cm away from the connectors at the two ends

End

10.3 Checking the Fiber Jumper Installation

The following requirements should be met when the fiber jumper installation is completed:

 The labels are attached neatly at two ends of the fiber jumper, facing the same direction The contents on them are correct and clear

 The connection between the fiber jumper and the optical interface board or the flange is firm

 The connecting point for the fiber jumper is clean

 All fiber jumpers are nicely bundled in even spacing with appropriate tightness

 Fiber jumpers can be moved freely in the cable tie

 Fiber jumpers routed from the equipment to the ODF must be covered with a protective pipe Both ends of the protective pipe shall extend into the

equipment or the ODF

 In routing, the fiber jumpers shall not be pulled or dragged with great force or bent forcibly

 Fiber jumpers are routed in a way convenient for maintenance and capacity expansion

 Routing of the fiber jumpers complies with the engineering design

 The fiber jumpers are secured smoothly and interconnected reliably in the ODF The redundant fiber jumpers are coiled tidily

 There shall be no other cable or article on the fiber jumpers