Long Haul System Installation Manual

ZXWM-32 (V1.10)

DWDM Optical Transmission System

Installation Manual

For Long Haul System

ZTE CORPORATION

11

© ZTE Corporation. 2001, Shenzhen, P. R. China

All rights reserved. No part of this publication may be excerpted, reproduced, translated, annotated or edited, in any form or by any means, without the prior written permission of the copyright owner.

ZXWM-32 (V1.10)

DWDM Optical Transmission System

Installation Manual for Long Haul System

* * * *

3/F., A Wing, ZTE Plaza, Hi-Tech Industrial Park, Shenzhen, P. R. China

Tel: (0086) 755–26770192

Fax: (0086) 755–26770160

Post-code: 518057

* * * *

December, 2001 First Edition, First Print

Preface

In recent years, with the rapid development of the global telecommunication market, especially the

emergence of new services, such as the Internet, high-quality videoconference system and multi-media etc,

there arises a burgeoning need of large-scale, high-performance network transmission. Because of its “one-

wavelength-in-one-fiber” mode, the traditional fiber transmission system SDH and PDH is so restricted by

the characteristics of its own equipment that neither its transmission capacity nor expansion mode can meet

the need, while leaving the massive bandwidth resources of fibers far from being fully exploited. Dense

Wavelength Division Multiplex (DWDM), a new transmission technology, has become the most effective

and practical means for the fiber expansion.

The ZXWM-32 DWDM optical transmission system is the DWDM product developed by ZTE

CORPORATION. This manual introduces the system structure of ZXWM-32 DWDM optical transmission

system, and describes the installation and testing, packaging, delivery and storage of this product, which

focuses on the hardware installation, NMS system installation and system testing and debugging.

This manual applies to ZXWM-32 (V1.10), which has the introductions of many new functions added on

the basis of Version 1.0, such as the descriptions of OADM equipment, those of the system optical

multiplexer section protection function, details of NMS functions and some updates, serving as a reference

for the engineering and O&M personnel.

This series of document contains 5 manuals. The other manuals are:

ZXWM-32 (V1.10) DWDM Optical Transmission System Technical Manual

ZXWM-32 (V1.10) DWDM Optical Transmission System installation manual for VLH system

ZXWM-32 (V1.10) DWDM Optical Transmission System installation manual for ZXONM E300

ZXWM-32 (V1.10) DWDM Optical Transmission System Operation and Maintenance Manual

for ZXONM E300

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Statement: Since the products and technologies are being continuously updated and perfected by

ZTE CORPORATION, the contents in this manual may differ from the actual product. To get newly

updated information of the product, please contact our local service office.

Contents

1 SYSTEM STRUCTURE......................................................................................................................................3

1.1 SYSTEM MECHANICAL STRUCTURE.................................................................................................................3

1.2 SYSTEM COMPOSITION...................................................................................................................................10

1.2.1 Rack system configuration.....................................................................................................................10

1.2.2 OA sub-rack structure............................................................................................................................11

1.2.3 OTU sub-rack structure.........................................................................................................................14

1.2.4 Configurations of sub-rack board plugging area..................................................................................16

1.2.5 Diagram of connections of optical fibers between Optical Terminal Multiplexer Equipment Boards..22

1.2.6 Diagram of connections of optical fibers between Optical Line Amplifier equipment boards.............23

1.2.7 Diagram of connections of optical fibers between Optical Add-Drop Multiplexer equipment boards.23

1.3 INTERFACE DESCRIPTIONS.............................................................................................................................24

1.3.1 Descriptions to the interface of power supply alarm units inside rack.................................................24

1.3.2 Internal electric interfaces of rack........................................................................................................28

1.3.3 Optical interface....................................................................................................................................31

2 INSTALLATION PREPARATIONS AND INSTALLATION FLOW..........................................................44

2.1 EQUIPMENT ROOM ENVIRONMENT REQUIREMENTS.......................................................................................44

2.2 PREPARATION OF INSTALLATION TOOLS.........................................................................................................44

2.3 UNPACKING INSPECTIONS..............................................................................................................................45

2.4 INSTALLATION FLOW DIAGRAM.....................................................................................................................46

3 HARDWARE INSTALLATION.......................................................................................................................47

3.1 RACK INSTALLATION.....................................................................................................................................47

3.1.1 Installation on the equipment room floors.............................................................................................47

3.1.2 Rack top installation..............................................................................................................................49

3.2 POWER SUPPLY ALARM UNIT INSTALLATION.................................................................................................50

3.3 SUB-RACK INSTALLATION..............................................................................................................................51

3.3.1 Structural installation............................................................................................................................51

3.3.2 Electric connection................................................................................................................................51

3.4 FAN INSTALLATION........................................................................................................................................51

3.4.1 Structural installation............................................................................................................................51

3.5 EXTERNAL POWER SUPPLY INSTALLATION.....................................................................................................53

3.6 BOARD INSTALLATION...................................................................................................................................55

3.6.1 Board installation..................................................................................................................................55

3.7 CAMOUFLAGE BOARDS INSTALLATION..........................................................................................................56

3.8 OPTICAL CABLE CONNECTION.......................................................................................................................56

3.8.1 Terminal equipment optical line connections........................................................................................56

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11

3.8.2 Line equipment optical line connections...............................................................................................60

3.8.3 OADM equipment optical line connections...........................................................................................61

4 SYSTEM TESTING AND DEBUGGING.......................................................................................................64

4.1 RACK POWER-ON TEST..................................................................................................................................64

4.2 BOARD POWER-ON TEST................................................................................................................................64

4.3 RACK ALARM LAMP TEST..............................................................................................................................65

4.4 HARDWARE TEST...........................................................................................................................................65

4.4.1 Terminal NE1 test..................................................................................................................................65

4.4.2 Line NE test............................................................................................................................................67

4.4.3 Combined adjusting of system...............................................................................................................67

4.5 SOFTWARE TEST.............................................................................................................................................68

4.6 SYSTEM SHUT-DOWN.....................................................................................................................................69

5 PACKAGING, DELIVERY AND STORAGE................................................................................................70

5.1 PACKAGING...................................................................................................................................................70

5.1.1 Packaging of PCBs................................................................................................................................70

5.1.2 Packaging of cables...............................................................................................................................70

5.1.3 Complete Product Packaging................................................................................................................71

5.1.4 Computer packaging..............................................................................................................................71

5.2 DELIVERY......................................................................................................................................................71

5.3 STORAGE.......................................................................................................................................................72

APPENDIX:...........................................................................................................................................................73

A. “OPTICAL TRANSMISSION EQUIPMENT INSTALLATION REQUIREMENTS”...........................73

1 INSTALLATION OF THE EQUIPMENT...................................................................................................................73

2 CABLE INSTALLATION.......................................................................................................................................74

3 EQUIPMENT APPEARANCE AND ON-SITE CLEANUP...........................................................................................76

B “Connectors and adapters introduce”.................................................................................................................76

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22

1 System Structure

1.1 System mechanical structure

ZXWM-32 employs the standard 19-inch rack of single-cabinet configuration.

Three height options for the complete products are provided (2.0m, 2.2m and 2.6m). Figure 1-1 to 1-4 show

the appearance of the cabinet, which are installed by the same method.

The whole product line of ZXWM-32 system contains 8/16/32/40×2.5Gb/s optical terminal multiplexer

equipment(OTM), optical add-drop multiplexer equipment(OADM), and optical line amplifier

equipment(OLA). For the structure diagrams of OTM, OADM, and OLA equipment, please refer to figure

1-2, figure1-3, and figure 1-4 respectively.

The sizes and weights of the main components are listed in table 1-1.

Table 1-1 Sizes and weights of rack components

Name Size: H×W×D (mm) Unit Weight (kg)

Rack (2.0m/2.2m/2.6m) (2000, 2200 or 2600)×600×300 75, 80, 90

OTU rack 488.5×480.5×256 20

OA rack 622×480.5×256 20

Power supply plug-in box 177×482.6×85.5 10

Installation base (optional)H×560×280 (H is up to users’

decision) 15

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33

ZXWM-32 (V1.10) DWDM Optical Transmission System Installation Manual for Long Haul system

Figure 1-1-1 External size of a cabinet

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Chapter 1 System Structure


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Figure 1-2 Optical terminal multiplexer equipment (OTM) structure diagram

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Figure 1-3 Optical add-drop multiplexer equipment (OADM) structure diagram

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Figure 1-4 Optical line amplifier equipment (OLA) structure diagram

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1.2 System composition

1.2.1 Rack system configuration

Figure 1-5 is the schematic diagram of ZXWM-32 rack system.

Figure 1-5 Rack system schematic diagram

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A complete product consists of three OTU sub-racks and one OA sub-rack.

The 322.5G system optical terminal unit comprises three racks, each consists of OTU sub-rack 1, OTU

sub-rack 2 and OA sub-rack.

The optical line amplifier equipment comprises one rack, which consists of a single sub-rack, the OA sub-

rack. Each cabinet is equipped with a power supply alarm unit, providing power supply and audio/light

alarms for the system.

1.2.2 OA sub-rack structure

An OA sub-rack consists of a common interface area, board plugging area, optical fiber wiring area and fan

area. The OA sub-rack structure is shown as in figure 1-6.

Figure 1-6 OA sub-rack structure diagram

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With simple mechanical structure, the rack is composed of the aluminum front/rear beam, left/right side

board and the guide rail bar.

The public interface area includes the electrical port and the signal connection port.

The board plugging area comprises 14 guide rail slots, with a spacing of 30mm between every two slots.

There is the fiber winding tray inside the wiring area, used for optical fiber winding and wiring.

The fan plug-in box contains the plug-in box mechanical parts, three fans, one power switch and one power

supply port.

The OA subrack interface area is shown in Fig. 1-7.

Fig. 1-7 The schematic diagram of the OA subrack interface area

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Description of the subracks in the OA subrack interface area is given below:

STOP-RING: The control interface to stop the ring.

POWER: The –48V power supply interface.

2MHz: The 2MHz external synchronous clock interface.

2Mbps: The 2Mbps external synchronous clock interface.

PHONE1: The orderwire telephone interface.

PHONE2: The orderwire telephone interface.

WARN: The alarm output interface.

ALM-IN: The alarm input interface.

V.35: The V.35 interface. (Reserved)

RS232: The RS232 interface. (Reserved)

RS485: The RS485 interface. (Reserved)

USER RS232: The RS232 transparent user interface.

USER RS422: The RS422 transparent user interface.

RJ45: The RJ 45 NM interface.

AUI: The AUI interface (reserved).

DATA1: The 64-core bus data interface.

DATA2: The 64-core bus data interface.

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1.2.3 OTU sub-rack structure

An OTU sub-rack consists of a common interface area, board plugging area, optical fiber wiring area and

fan area. The sub-rack structure is shown as in figure 1-8.

Figure 1-8 OTU sub-rack structure diagram

With simple mechanical structure, the rack is composed of the aluminum front/rear beam, left/right side

board and the guide rail bar.

The public interface area includes the electrical port and the signal connection port.

The board plugging area comprises 14 guide rail slots, with a spacing of 30mm between every two slots.

There is the fiber winding tray inside the wiring area, used for optical fiber winding and wiring.

The fan plug-in box contains the plug-in box mechanical parts, three fans, one power switch and one power

supply port.

The OTU subrack interface area is shown in Fig. 1-9.

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Fig. 1-9 The schematic diagram of the OTU subrack interface area

The description of the OTU subrack interface area is given below:

POWER: The –48V power supply interface.

DATA: The 64-core bus data interface.

Note: The OTU subrack on the upper side of the rack is defined as the OTU1 subrack while the one on the

lower side is defined as the OTU2 subrack.

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1.2.4 Configurations of sub-rack board plugging area

1.2.4.1 A typical configuration of the board plugging area of the sending terminal equipment

A typical configuration of the board plugging area of the sending terminal equipment OTU-1 sub-rack is

shown as in figure 1-10.

OTU sub-rack fan area

O

T

U

1

O

T

U

2

O

T

U

3

O

T

U

4

O

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5

O

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O

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O

T

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13

O

T

U

14OTU sub-rack common interface area

Optical fiber area

Figure 1-10 Sending terminal equipment OTU-1 sub-rack plugging area configuration diagram

A typical configuration of the board plugging area of the optical multiplexer terminal equipment OA sub-

rack is shown as in figure 1-11.

Figure 1-11 Sending

terminal equipment

OA sub-rack plugging area

configuration diagram

A typical configuration of the board plugging area of the sending terminal equipment OTU-2 sub-rack is



O

M

U

O

T

U

15

O

W

O

S

C

N

C

P

O

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16

O

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17

O

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18

O

B

A

Fan

Optical fiber area

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O

T

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O

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20

O

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O

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O

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O

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O

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U

26

O

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27

O

T

U

28

O

T

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29

O

T

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30

O

T

U

31

O

T

U


Optical fiber area

Figure 1-12 Sending terminal equipment OTU-2 sub-rack plugging area configuration diagram

1.2.4.2 A typical configuration of the board plugging area of the receiving terminal equipment

A typical configuration of the board plugging area of the receiving terminal equipment OTU-1 sub-rack is



O

T

U

R

1

O

T

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R

2

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O

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R


Optical fiber area

Figure 1-13 Receiving Terminal equipment OTU-1 sub-rack plugging area configuration diagram

A typical configuration of the board plugging area of the optical demultiplexer terminal equipment OA sub-

rack is shown as in figure 1-14.

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Figure 1-14 Receiving

Terminal equipment OA

sub-rack plugging area

configuration diagram

A typical

configuration of the board plugging area of the receiving terminal equipment OTU-2 sub-rack is shown as

in figure 1-15.


O

T

U

R

19

O

T

U

R

20

O

T

U

R

21

O

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O

T

U

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29

O

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30

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R

31

O

T

U

R


Optical fiber area

Figure 1-15 Receiving terminal equipment OTU-2 sub-rack plugging area configuration diagram

1.2.4.3 A typical configuration of the board plugging area of the optical add-drop equipment

A typical configuration of the board plugging area of the optical add-drop equipment OTU-1 sub-rack is



O

T

U

1

O

T

U

2

O

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3

O

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4

O

P

A

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A

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N

C

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15

O

D

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Fan

Optical fiber area

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1 2 3 4OTU sub-rack common interface area

Optical fiber area

Figure 1-16 Optical add-drop multiplexer equipment OTU-1 sub-rack plugging area configuration diagram

A typical configuration of the board plugging area of the optical add-drop equipment OA sub-rack is shown

as in figure 1-17.

Figure 1-17

Optical add-drop multiplexer

equipment OA sub-rack

plugging area configuration

diagram

A typical configuration of the board plugging area of the optical add-drop equipment OTU-2 sub-rack is



O

T

U

R

1

O

T

U

R

2

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T

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R

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O

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D

O

P

A

O

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U

1

O

T

U

2

O

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3

O

T

U

4

OTU sub-rack common interface area

Optical fiber area

O

B

A

O

W

O

S

C

N

C

P

O

B

A

Fan

Optical fiber area

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Figure 1-18 Optical add-drop multiplexer equipment OTU-2 sub-rack plugging area configuration diagram

1.2.4.4 A typical configuration of the board plugging area of the line amplifier equipment

A typical configuration of the board plugging area of the line amplifier OA sub-rack is shown as in figure

1-19.

O

L

A

O

W

O

S

C

N

C

P

O

L

A

Fan

Optical fiber area

Figure 1-19 Line equipment OA sub-rack plugging area configuration diagram

Features of the board structure:

1. The size of all sub-rack boards is 300 mm×210 mm

2. A single board consists of the front panel, board extractor, and the PCB. Plugs are provided on the PCB

to connect to the sockets on the back plate.

3. On the front panel you will see the board name corresponding to the board slot of the sub-rack.

The board types are listed in table 1-2.

Table 1-2 Board type list

No. Full Name

1 Optical Transponder Unit (OTU)

2 Optical Multiplex Unit (OMU)

3 Optical Demultiplex Unit (ODU)

4 Optical Amplifier Optical booster amplifier

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(OA)

(OBA)

Optical preamplifier (OPA)

Optical line amplifier (OLA)

5 Order Wire Board (OW)

6Optical Supervision

Channel Board(OSC)

Optical Supervision Channel

terminal (OSCT)

Optical supervision Channel

line (OSCL)

6 Net Control Processor (NCP) Board

7 Optical Add-Drop Board(OAD)

8 Optical Performance Monitor Board(OPM)

9 Optical Protection Board(OP)

Note: The OW board must be plug in the 6th slot, the osc board can be plug in the 7th or 9th slot , the NCP

board must be plug in the 8th solt , except that the OW, OSC and NCP board are fixed in the plugging area,

all boards of the main optical channel is allowed to be located freely as per requirements. Mixed plugging

is allowed in the plugging area. Figure 1-10 to Figure 1-19 are the diagrams of the recommended board

plugging. You may make flexible configurations as per requirements.

Each board slots on the back plate of a sub-rack consists of two sockets: a signal socket and a –48V power

supply socket. On all back plates, every power supply socket is the 12-pin socket. The signal definitions are

shown in figure 1-20, in which the upper two rows are for –48V grounding and the lower two rows are for

–48V power supply.

Figure 1-20 Back plate 12-pin power supply socket

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1.2.5 Diagram of connections of optical fibers between Optical Terminal Multiplexer Equipment Boards

The connection of optical fibers between optical terminal multiplexer equipment boards (take the 32-

channel system as an example) is shown as in figure 1-21.

Figure 1-21 Optical fiber connection diagram of ZXWM-32 optical terminal multiplexer equipment

1.2.6 Diagram of connections of optical fibers between Optical Line Amplifier equipment boards

The connection of optical fibers between line amplifier equipment boards is shown in figure 1-22.

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Figure 1-22 Optical fiber connection diagraph of ZXWM-32 optical line amplifier equipment

1.2.7 Diagram of connections of optical fibers between Optical Add-Drop Multiplexer equipment boards

The connection of optical fibers between optical add-drop multiplexer equipment boards is shown in figure

1-23.

Figure 1-23 Optical fiber connection diagraph of ZXWM-32 optical add-drop multiplexer equipment

1.3 Interface descriptions

1.3.1 Descriptions to the interface of power supply alarm units inside rack

The power supply alarm unit consists of the power supply alarm plug-in box and the alarm light boards.

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The power supply alarm unit has the following functions and features:

1. It features the 10A overcurrent protector;

2. It provides power for up to three subracks, with identically defined interfaces.

3. It provides power for up to three sets of fan units, with identically defined interfaces.

4. It provides power supply inputs with 1+1 protection function.

5. It also provides the audible and visual alarm function.

The main specification of the power supply alarm unit are:

1. Output voltage ranges from –40V to –60V, with the rated voltage of –48V.

2. The maximal output current in the power supply output interface of each subrack is 10A.

3. The maximal output current of each fan interface is 3A.

The Fuse has the following features:

1. Size: Ф5mm×20mm package (glass)

2. Specification: 10A/250VAC; F10AL; FAST; low-breaking

Alarm lights boards are in the middle top of a rack. Green-lamp lighting solely means that the power supply

is normal and no alarms in the rack; both green-lamp and red-lamps lighting means that there are urgent

alarm(s) in the rack; both green-lamp and yellow-lamp lighting means that there are non-urgent alarm(s) in

the rack.

Some examples are as following:

“OTU input LOS alarm” is an urgent alarm, both red-lamp and green-lamp light.

“OTU low input power alarm” is a non-urgent alarm, both yellow-lamp and green-lamp light.

Fig. 1-24 shows the structure of the power supply alarm plug-in box.

The dimension of power supply alarm box is 177mm×482.6mm×85.5mm.

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Fig. 1-24 The structure diagram of the power supply alarm plug-in box

The front view of the power supply alarm unit is shown in Fig. 1-25

Fig. 1-25 The front view of the power supply alarm plug-in box

The description of each interface in this front view is given below.

OUT1~OUT3: The –48V power supply overcurrent protectors of the three subracks, each of which should

be inserted by a 10A fuse.

LAMP: The alarm indicator interface, connected to the alarm indicator board (LED board).

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-48V (I): The air switch 1.

GND (I): The connection terminal 1.

PGND: The grounding terminal.

GND (II): The connection terminal 2.

-48V (II): The air switch 2.

The back view of a power supply alarm unit is shown in Fig. 1-26

Fig. 1-26 The rear view of the power supply alarm plug-in box

The description of each interface in this rear view is given below.

OUT1~OUT3: -48V output to the subracks. The schematic diagram of the socket pins is shown in Fig. 1-

27. The signal definitions of the power supply output interfaces are listed in Table 1-3.

Fig. 1-27 The schematic diagram of the OUT1~OUT3 power suppluy socket on the backplane of the

power supply alarm plug-in box

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Table 1-3 The description of the pin signals of the OUT1~OUT3 power supply socket on the

backplane of the power supply alarm plug-in box

Pin No. Signal description

1 -48V.

2 -48V.

3 -48V.

4 Protection ground

5 -48V ground

6 -48V ground

FAN: With -48V output, it provides power supply for three fan plug-in boxes. Fig. 1-28 shows the

schematic diagram of the fan socket pin while Table. 1-4 lists the power supply output interface signals of

the fan.

Fig. 1-28 FAN power supply socket on the back panel of the power supply alarm plug-in box

Table 1-4 The description of the pin signals of the FAN power supply socket on the back panel of the

power supply alarm plug-in box

Pin No. Signal description

1 -48V.

2 -48V.

3 -48V.

4 -48V ground

5 -48V ground

6 -48V ground

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BUZZER: The buzzer interface

WARN: The alarm interface, from the OA subrack.

ALM_OUT: The external output alarm interface

This interface is used to be connected to the column head cabinet or to other supervision unit. And all

signals are isolated by the relay.

1.3.2 Internal electric interfaces of rack

The internal electric interfaces of a rack is shown as in figure 1-29 (A front view. The broken-lined ovals

indicate that the plugs are at the back).

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Figure 1-29 Schematic diagram of the internal electric interfaces in a rack

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Explanations to the codes in the diagram is shown in table 1-5.

Table 1-5 Electric interface descriptions table

Interface No. Interface name Interface No. Interface name

4 Alarm light signal input socket 20OA sub-rack-48 power supply

input

5 Buzzer signal output interface 212MHz external synchronization

input clock interface

6 alarm signal input interface 22

2Mbps external

synchronization input clock

interface

7 Alarm light signal output socket 23 OW interface 1

8 Alarm signal output interface 24 alarm signal output interface

9-48V power supply output

interface 125 OW interface 2


interface 226

monitoring alarm input

interface


interface 327 V.35 interface (reserved)

12Fan power supply output

interface28 RS232 interface (reserved)

13OTU sub-rack 2 –48V power

supply input29 RS485 interface (reserved)

14

OTU subrack 2 64-pin data

socket 30, 31user transparent channel

interface 1, 2

15 Fan power supply input socket 32 RJ45 interface

16OTU sub-rack 1 –48V power

supply input33 AUI interface (reserved)

17OTU subrack 1 64-pin data

socket34, 35 64-pin data interface

18 Fan power supply input socket 36Fan power supply input

interface

19 ring trip signal input socket 37 Fan power supply switch

38 Fan power supply switch 39 Fan power supply switch

OTU sub-rack common interface area includes the following interfaces:

A power supply interface PWR (13) or PWR (16)

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A bus data interface DATA (14) or DATA (17).

OA sub-rack common interface area includes the following interfaces:

Two OW phone connection interfaces PHONE1 (23) and PHONE2 (25).

Two transparent user interfaces USER232 (30) and USER422 (31)

NMIs, including a RJ45 (32) interface.

Two 64-pin bus data interfaces DATA1 (34) and DATA2 (35).

A –48V power supply interface PWR (20)

Two alarm interfaces, which are respectively the alarm output interface WARN (24), and the alarm

input interface ALM_IN (26).

Two 2M external synchronization clock interfaces 2MHz (21) and 2Mbps (22).

A ring trip control interface STOP_RING (19).

1.3.3 Optical interface

1.3.3.1 OTU

The interfaces on OTU are shown as in figure 1-30.

Figure 1-30 OTU front panel schematic diagram

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The indicators of the OTU front panel are described as follows:

1. ALM (red): the alarm indicator.

2. NOM (green): the normal work indicator.

Dimensions of the OTU board are（300mm×210mm×30mm）.

The interfaces of the OTU front panel are described as follows:

1. OUT: optical output interface (SC/PC connector);

2. IN: optical input interface (SC/PC connector);

OTU Interface Specifications

1. Interface specification of 2.5Gb/s OTU at thetransmit-side (OTUT)

Table 1-6 Transmit-side 2.5Gb/s OTU interface specifications of ZXWM-32(V1.10) DWDM system

Items Unit Parameters

The point parameter at the OTU output end

Spectral

characteristics

Maximum –20dB

spectral width nm ≤0.2

minimum side mode

suppression ratio dB >=35

Mean launched power dBm -3 ～ +1

Extinction ratio dB >=8.2

Eye pattern mask In compliance with G.957 requirements

Central frequency THz 192.1 ～ 195.2

Channel spacing GHz 100

Maximum central frequency deviation GHz +/-20

Output jitter UI

B1(5kHz～20MHz): <=0.5

B2(1MHz～20MHz): <=0.1

The point parameter at the OTU input end

Receiver sensitivity dBm <=-18/-28[Note]

Receiver Overload power dBm >=0/-9[Note]

Receiver reflectance dB <=-27

Note : in the table, for the PIN OTU board, the receiver sensitivity is <=-18dBm, overload power is >=0dBm; For the APD

OTU board, the receiving sensitivity is <=-28dBm, overload power is >=-9dBm.

-33-


2. Interface specification of 2.5Gb/s OTU at the receiving end (OTUR)

Table 1-7 Receive-side 2.5Gb/s OTU interface specifications of ZXWM-32(V1.10) DWDM system


The point parameter at the OTU output end

Spectral

characteristics

Maximum –20dB

spectral width nm ≤1

minimum side mode

suppression ratio dB >=35

Mean launched power dBm -3 ～ +1

Extinction ratio dB >=8.2

Eye pattern mask In compliance with G.957 requirements

Output wavelengh nm 1280～1335/1500～1580[Note]

Output jitter UI

B1(5kHz～20MHz): <=0.5

B2(1MHz～20MHz): <=0.1

The point parameter at the OTU input end

Receiver sensitivity dBm <=-28

Receiver Overload power dBm >=-9

Receiver reflectance dB <=-27

Note : in the table, for the 1310nm OTUR board, the range of wavelengh is 1280～1335nm; For the 1550nm OTUR board,

the range of wavelengh is 1500～1580nm.

1.3.3.2 OMU

The OMU interface is shown as in figure 1-31.

-34-


Figure 1-31 OMU front panel schematic diagram

The indicators of the OMU front panel are described as follows:



Dimensions of the OMU board are（300mm×210mm×120mm）.

The interfaces of the OMU front panel are described as follows:

1. CHn: 8/16/32/40 optical input interfaces (SC/PC connector);


3. MON: local optical monitoring interface

Major performance parameters of OMU of ZXWM-32 (V1.10) optical transmission system are listed in

Table 1-8.

Table 1-8 Performance parameters of OMU of ZXWM-32 (V1.10) optical transmission system

Item Unit Parameters

Insertion loss dB <=17

The maximum insertion loss difference of various channels dB <=3

-35-


1.3.3.3 ODU

The ODU interface is shown as in figure 1-32.

Figure 1-32 ODU front panel schematic diagram

The indicators of the ODU front panel are described as follows:



Dimensions of the ODU board are（300mm×210mm×120mm）.

The interfaces of the ODU front panel are described as follows:

1.CHn: 8/16/32/40 optical output interfaces (SC/PC connector);


3. UDG: upgrade interface (SC/PC connector).

Major performance parameters of ODU of ZXWM-32 (V1.10) optical transmission system are listed in

Table 1-9.

-36-


Table 1-9 Performance parameters of ODU of ZXWM-32 (V1.10) optical transmission system


Insertion loss dB <10

Separation of adjacent channels dB >=25

Separation of non-adjacent channels dB >=25

1.3.3.4 OBA

The interfaces on OBA is shown in Fig. 1-33.

Figure 1-33 OBA front panel schematic diagram

Dimensions of the OBA board are（300mm×210mm×60mm）.

The optical interfaces of the OBA front panel are described as follows:

1. IN: 1550 input interface (SC/PC connector);

2. OUT: line output interface (SC/PC connector);

3. SIN: the 1510 input interface from the supervisory channel (SC/PC connector);

4. MON: local monitoring output interface (SC/PC connector).

Performance parameters of the optical booster amplifier of the ZXWM-32 (V1.10) WDM optical

transmission system are listed in Table 1-10.

-37-


Table 1-10 Performance parameters of ZXWM-32(V1.10)DWDM system optical booster amplifier


Total input power range dBm -8~-3

Maximum total output power dBm 20

Noise coefficient dB <=6

Input return loss dB >=27

Output return loss dB >=27

Gain flatness dB <=2

Gain tilt dB/dB <=1.6

Polarization related gain change dB <=2

1.3.3.5 OPA

The interfaces on OPA is shown in Fig. 1-34.

Figure 1-34 OPA front panel schematic diagram

Dimensions of the OPA board are（300mm×210mm×60mm）.

The optical interfaces of the OPA front panel are described as follows:

1. IN: Line input interface (SC/PC connector);

-38-


2. OUT: 1550 output interface (SC/PC connector);

3. SOUT: the 1510 output interface to the supervisory channel (SC/PC connector);

4. MON: local monitoring output interface (SC/PC connector);

Performance parameters of the preamplifier of the ZXWM-32 (V1.10) WDM optical transmission system

are listed in Table 1-11.

Table 1-11 Performance parameters of ZXWM-32(V1.10)DWDM system preamplifier










1.3.3.6 OLA

The interfaces on OLA is shown in Fig. 1-35.

-39-


Figure 1-35 OLA front panel schematic diagram

Dimensions of the OLA board are（300mm×210mm×60mm）.

The optical interfaces of the OLA front panel are described as follows:

1. IN: line input interface (SC/PC connector);

2. OUT: line output interface (SC/PC connector);

3. SOUT: the 1510 output interface to the supervisory channel (SC/PC connector);

4. SIN: the 1510 input interface from the supervisory channel (SC/PC connector);

5. MON: local monitoring output interface (SC/PC connector).

Performance parameters of the optical line amplifier of the ZXWM-32 (V1.10) WDM optical transmission

system are listed in Table 1-12.

Table 1-12 Performance parameters of ZXWM-32(V1.10)DWDM system optical line amplifier










1.3.3.7 OSCT

The interfaces on OSCT are shown as in figure 1-36.

The optical interfaces are as below:

OUT: the output optical interface to the supervision channel

IN: the input optical interface to the supervision channel

-40-


Figure 1-36 OSCT front panel schematic diagram

Dimensions of the OSCT board are（300mm×210mm×30mm）.

The interfaces of the OSCT front panel are described as follows:

1. OUT: supervisory channel output interface (SC/PC connector);

2. IN: supervisory channel input interface (SC/PC connector).

1.3.3.8 OSCL

The interfaces on OSCL are shown as in figure 1-37.

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Figure 1-37 OSCL front panel schematic diagram

Dimensions of the OSCL board are（300mm×210mm×30mm）.

The interfaces of the OSCL front panel are described as follows:

1. OUT1: supervisory channel output optical interface 1;

2. IN1: supervisory channel input optical interface 1;

3. OUT2: supervisory channel output optical interface 2;

4. IN2: supervisory channel input optical interface 2

The interface parameters of OSC are listed in Table 1-13.

Table 1-13 Main performance specification of OSC in the ZXWM-32(V1.10) optical transmission system


Working wavelength nm 1510±10

Average signal transmission power dBm -7~0

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1.3.3.9 OAD

The interfaces on OAD are shown as in figure 1-38.

Figure 1-38 OAD front panel schematic diagram

The indicators of the OAD front panel are described as follows:



Dimensions of the OAD boardare（300mm×210mm×60mm）.

The interfaces of the OAD front panel are described as follows:

1. IN: combination signal input interface (SC/PC connector);

2 DROPn: four-channel/eigtht-channel signal output interface (SC/PC connector);

3. ADDn: four-channel/eigtht-channel signal input interface (SC/PC connector);

4. OUT: combination signal output interface (SC/PC connector)

The interface parameters of OAD of ZXWM-32(V1.10) DWDM optical transmission system

-43-


are listed in Table 1-14.

Table 1-14 The interface parameters of OAD


Insertion loss of input-drop interface dB <=5

Insertion loss of add-output interface dB <=5

Insertion loss of input-output interface dB <=8

Separation of adjacent channels at drop interface dB >=35

Separation of non-adjacent channels at drop interface dB >=22

Separation of output interface to drop channel dB >=33

Optical return loss dB >=40

1.3.3.10 OPM

The interfaces on OPM are shown as in figure 1-39.

Figure 1-39 OPM front panel schematic diagram

The indicators of the OPM front panel are described as follows:



Dimensions of the OPM board are（300mm×210mm×60mm）.

-44-


The interfaces of the OPM front panel are described as follows:

1. INn: two optical input interfaces (SC/PC connector), and n indicates 1~2.

-45-

2 Installation Preparations and

Installation Flow

The internal structure components of the equipment shall be well installed during the cabinet assembly, and

the boards inside the cabinet shall be packaged separately for delivery. No particular requirements during

the installation.

2.1 Equipment room environment requirements

Space requirements:

The room reserved for opening doors at either side shall not be less than 800mm.

Operation temperature:

To guarantee performance indexes:0℃~ +50℃

To guarantee working: -5℃ ~ +55℃

Relative humidity:

To guarantee performance indexes:10% ~ 95%(+35℃)

To guarantee working: 5% ~ 95%(+35℃)

Cleanness: The density of dust particles larger than 5μm in diameter shall be ≤ 3×104 particle/m3; non-

conductive, non-magneto-conductive and non-corrosive dust particles.

Required DC power supply range: -40V ~ -60V.

2.2 Preparation of installation tools

Prepare the following tools:

A percussive electric drill, Φ16 drilling bit, a hammer, a mandrill specially for installing bulge nuts, a cross

screwdriver, and a wrench.

The following documentation shall be prepared:

-46-

4646

Chapter 2 Installation Preparations and Installation Flow

ZXWM-32 DWDM Optical Transmission System Technical Manual 1

ZXWM-32 DWDM Optical Transmission System Operation and Maintenance Manual 1

ZXWM-32 DWDM Optical Transmission System Installation Manual 1

2.3 Unpacking inspections

Check the arrival of the total articles.

Check the conditions of the packaging boxes to see if there is any damage, and make records.

Unpack carefully, and check the inside pieces against the shipping bill and the packing list.

Check if there is any loosened part or visual damage on the rack. Check the completeness and

conditions of the connectors, cables, optical fibers and jumpers.

If there is any damage or loss, contact the local maintenance center of our company, so as to make

compensations as soon as possible.

-47-


2.4 Installation flow diagram

The installation flow is shown as in figure 2-1.

Figure 2-1 ZXWM-32 DWDM optical transmission system installation and testing flow

-48-

3 Hardware Installation

3.1 Rack installation

3.1.1 Installation on the equipment room floors

The bottom of a rack is shown as in figure 3-1.

Figure 3-1 The dimensional drawing of drilling on a rack installation base (mm)

On the equipment room floor that is provided, mark the positions of the base lines of the rack and the

positions of the installation holes.

3.1.1.1 Direct installation on the concrete floor

Fittings for the installation are as below:

Bulge nuts (with taper pin) M12×50 4

hexagonal bolts M12×25(GB5783-86) 4

Spring washers 12 (GB93-87) 4

Flat washer12 (GB97.1-85) 4

-49-

4949


Big flat washer12 (GB96-85) 4 (optional)

Install following the steps as below:

1. As per the dimensions shown in figure 3-1, drill four Φ16 round holes at the installation positions on the

concrete floor, and the holes are as deep as 50mm.

2. Clear the dust and earth off the floor, and put four M12×50 steel bulge nuts into the holes, and then put

the taper pins into the nuts. Hammer the taper pins with the hammer and the special-purposed mandrill, so

that the bottoms of the taper drills and the nut bottoms will be on the same level.

3. Move the rack to the working place, and adjust its bottom level.

4. Remove the adjusting bolts off the rack bottom, and point the installation holes on the rack bottom to the

nut holes, and then put on the flat washers and the spring washers in turn. Finally, screw down the M12×25

hexagonal bolts into the nuts.

3.1.1.2 Installation on the suspended floor

Fittings for the installation are as below:

Bulge nuts (with taper pin) M12×50 4

hexagonal bolts M12×25(GB5783-86) 8

Spring washers 12 (GB93-87) 8

Flat washer12 (GB97.1-85) 12

Big flat washer12 (GB96-85) 4 (optional)

Nut M12 (GB6170-86) 4

Install following the steps as below:

1. As per the dimensions shown in figure 3-1, drill four Φ16 round holes at the installation positions on the

concrete floor, and the holes are as deep as 50mm.

2. Clear the dust and earth off the floor, and put four M12×50 steel bulge nuts into the holes, and then put

the taper pins into the nuts. Hammer the taper pins with the hammer and the special-purposed mandrill, so

that the bottoms of the taper drills and the nut bottoms will be on the same level.

3. Move the installation base to the working place.

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Chapter 4 NMS System Installation

4. Point the installation holes on the rack bottom to the nut holes, and then put on the flat washers and the

spring washers in turn. Finally, screw down the M12×25 hexagonal bolts into the nuts, so as to fix the

installation base onto the ground.

5. Remove the adjusting bolts off the rack bottom, and point the installation holes on the bottom to the

corresponding installation holes on the installation base.

6. Use the M12×25 hexagonal bolts, flat washers, spring washers and nuts to fix the rack with the

installation base.

3.1.2 Rack top installation

The installation dimension of the rack top is shown as in figure 3-2.

420

600

230

300

4-φ 16

Outline of the equipment

Figure 3-2 The dimensional drawing of rack top installation (mm)

In the upward outgoing line mode, use four angular section pieces (X, X1, Y and Y1, which are determined

by the wiring troughs of the office side and the relative installation position of the rack). Fix one side of a

angular section piece onto the top rims of the rack by using the M6 (or M8) bolts, nuts, and plat and spring

washers, and fix the other side of it onto the wiring trough of the office side. Refer to figure 3-3.

-51-


Figure 3-3 Angular section piece diagram

3.2 Power supply alarm unit installation

This part shall be installed before delivery. Please check the following parts:

1. Check if the M6 fixing bolts between the alarm box fixing board and the external-tooth washer of the

rack is loose. Fix it if it is loose.

2. Check the power supply alarm boards and the alarm light boards, leads, buzzer and other parts, which

shall be complete.

3. Check the appearance of the power supply alarm boards and the alarm light boards, leads, buzzer and

other parts, which shall be free of damage or stain.

4. Check it against figure 1-25. The LAMP (7) and the alarm lamp board interface 4 (the input socket of

alarm lamp signals) shall be connected through cables. The 9-pin socket shall be perfectly connected.

5. Check it against figure 1-25. The fuses in the fuse seat OUT1, OUT2 and OUT3 shall be well installed.

6. Check it against figure 1-26. The BUZZER interface shall be perfectly connected with the buzzer.

-52-


3.3 Sub-rack installation

3.3.1 Structural installation

Set the OA or OTU sub-rack on the stainless tray of the rack according to configurations, and guide it into

the rack cautiously. Fix it to the external-tooth washer with the M6 bolts after it is in the right position.

3.3.2 Electric connection

Make the connections according to figure 1-18 and table 3-1 and 3-2.

Table 3-1 Internal connections of a rack

A-end Interface B-end interface Connection cable

PWR ( 20 ) OUT1 ( 9 ) 1.2m 054L33 power supply cable

WARN ( 24 ) WARN ( 6 ) 1.5m 054L38 alarm cable

STOP_RING ( 19 ) Ring trip switch 0.35m 054L39 ring trip cable

DATA1 ( 34 ) DATA ( 17 ) 0.32m 054L40 data cable

DATA2 ( 35 ) DATA ( 14 ) 1.4m 054L41 data cable

PHONE1 ( 23 ) Internal OW telephone Telephone self-provide line

Table 3-2 External connections of a rack


RJ45 ( 32 ) NMS computer 054L13 network line (the actual length is

determined by actual configurations)

2MHz ( 21 ) Office side Coaxial cable (the actual length is determined by

actual configurations)

2Mbps ( 22 ) Office side Coaxial cable (the actual length is determined by

actual configurations)

USER1 ( 30 ) Computer 5m 054L20 transparent user channel line

USER2 ( 31 ) Computer 5m 054L21 transparent user channel line

PHONE2 ( 25 ) OW telephone 054L16 2-core network line (the actual length is

determined by actual configurations)

V．35 ( 27 ) Reserved

RS232 ( 28 ) Reserved

RS485 ( 29 ) Reserved

3.4 Fan installation

3.4.1 Structural installation

Procedures of sub-rack fan installation:

1. Unpack and take out the fan and check the appearance to see if there is any damage.

-53-


2. Set the fan on the stainless tray of the rack, and guide it in carefully. Screw down the bolts after it is in

the right position.

Procedures of OA sub-rack fan installation:

1. Unpack and take out the fan and check the appearance to see if there is any damage.

2. After opening the backdoor of the rack, set the fan on the stainless tray of the rack, and guide it in

carefully. Screw down the bolts after it is in the right position.

Note: the power supply switch of the OA sub-rack fan shall be positioned facing the front opening of the

fan box. Install the OA sub-rack fan from the back of the sub-rack, and install the OTU sub-rack fan from

the front of the sub-rack.

Make the connections according to figure 1-18 and table 3-3, 3-4 and 3-5.

Table 3-3 Table of configuration and connections of the three sub-racks of the terminal equipment


OTU1 sub-rack fan air socket

(18)FAN (12)

0.7/1.8/1.95 m 054L36 fan cable OA sub-rack fan air socket (36) FAN (12)


(15)FAN (12)

Table 3-4 Table of configuration and connections of the dual sub-racks of the terminal equipment



(18)FAN(12)

0.7/1.8m 054L35 fan cable

OA sub-rack fan air socket (36) FAN(12)

Table 3-5 Table of configuration and connections of the single sub-rack of the line equipment


OA sub-rack fan air socket (36) FAN(12) 1.8m 054L37 fan cable

-54-


3.5 External power supply installation

The connection of power supply is shown as in figure 3-4.

Figure 3-4 External power supply accessing connection diagram

The ZXWM-32 signal rack equipment provides two groups of –48V power supply inputs (it is allowed to

select any one of them, and it is recommended to introduce both, so as to provide protection), including two

–48V terminals, one –48GND signal ground terminal, and one PGND protection ground terminal.

-55-


Connection methods for the first group of –48V input:

1. Peel the multi-strand black leads of over 4mm2 (10mm2 is recommended) in length, and plug it into the

GDN (I) connection terminal. Tighten it with a screwdriver. The other end of the copper wire is connected

the –48V ground provided in the equipment room.

2. Peel the multi-strand blue leads of over 4mm2 (10mm2 is recommended) in length, and plug it into the –

48V (I) air switch. Tighten it with a screwdriver. The other end of the copper wire is connected the –48V

ground provided in the equipment room.

Connection methods for the second group of –48V input:

1. Peel the multi-strand black leads of over 4mm2 (10mm2 is recommended) in length, and plug it into the

GDN (I) connection terminal. Tighten it with a screwdriver. The other end of the copper wire is connected

the –48V ground provided in the equipment room.

2. Peel the multi-strand blue leads of over 4mm2 (10mm2 is recommended) in length, and plug it into the –

48V (I) air switch. Tighten it with a screwdriver. The other end of the copper wire is connected the –48V

ground provided in the equipment room.

The connection method for the protection grounds(PGND):

1. Peel the multi-strand yellow leads of over 10mm2 in length, and weld it onto the 100A connection lug,

and install it to the protection ground end of the rack. The other end of the lead is connected to the

protection ground provided in the equipment room.

2. Peel the multi-strand yellow leads of over 10mm2 in length, and weld it onto the 100A connection lug,

and install it to the protection ground end of the rack. The other end of the copper wire is connected to one

end of the PGND of the grounding terminal. Please make sure to tighten the connections.

3. Fix the two lugs that are crimped to the protection ground terminal tightly using bolts.

Cautions:

1. All external power supplies of a rack must be led in through the lead grooves either on the top or at the

bottom of the rack. The upward wiring mode is preferential.

2. Before the connection, use a multimeter to test the voltage output of the equipment room. The rating is –

48V, and the allowed flowing range is –40V~-60V.

3. Connect the power supply at the ZXWM-32 rack side first. And after make sure that the equipment room

power supply output end is in the disconnected status, connect the power distribution terminals at the office

end according to the office application requirements.

-56-


4. Before the connection, make sure the air switch is in off status. Switch to the “OFF” position to turn it

off, and “ON” to turn it on.

5. Connect the –48V ground and the protection ground (the protection ground is preferentially

recommended) before connecting the –48V power supply.

6. It is allowed to use thicker leads as the power wire and the grounding wire according to actual

conditions, however, their diameters shall not exceed the aperture of connection terminals.

3.6 Board installation

3.6.1 Board installation

Installation procedure

1. Take the board out of the anti-static bag, and check if there is any external mechanical damage. Be

cautious not to damage the optical fiber interface. After making certain that there is no abnormality, start

the installation.

2. Plug the board to the corresponding slot according to the board type marked on the front panel, and

according to the configuration table. Underprop the board with your balm to insert it into the slot. Close the

extractor with your thumb. Push the board into the right position along the guiding rail carefully.

3. Fix the board on the sub-rack using the board fixing bolt on the baffle.

Cautions:

1. Before installation, put on the anti-static wrist strap, so as to connect the human body to the protection

ground of the rack.

2. Pay attention to point the board to precisely to the corresponding socket on the back plate, and it shall be

plugged in the guiding rail vertically.

3. On-line swapping is supported. Nevertheless, it is recommended to plug the board after turning off the

power.

4. Pay attention not to damage the fiber tail when you plug the optical board.

5. The power supply alarm boards and the alarm lamp boards shall be well installed before delivery. Please

check if they are loose or missing.

3.7 Camouflage boards installation

Each sub-rack may have a certain number of blank slots due to different configurations. Each blank slot is

equipped with standard fascia panel. During the installation, move the baffles slightly leftwards or

-57-


rightwards, to adjust the gaps between slots, and to even the gaps. And then, fix the board on the sub-rack

using the board-fixing bolt on the baffle.

3.8 Optical cable connection

The typical configurations of fiber tails: 10m in length; one end of the optical fiber jumper shall be SC/PC,

which is inside the rack, and the other end shall be FC/PC, which is outside of the rack. The optical fiber

inside the rack shall all be the 1.5m jumper with both ends being SC/PC.

3.8.1 Terminal equipment optical line connections

For the terminal optical line connection, refer to figure 3-5 and 3-6 (take the 32-channel system as an

example, and the actual front panel of a board as the standard).

-58-


Figure 3-5 A-direction sending terminal equipment optical line connection diagram

-59-


Figure 3-6 A-direciton receiving terminal equipment optical line connection diagram

-60-


The connection relationship of the optical line shown in figure 3-5 and 3-6 are listed in table 3-6 and 3-7.

Table 3-6 A-direction sending terminal equipment optical line connection relationships

End A End B Remarks

The A-direction STM signal input fiber

outside the rackEach OTU IN n

Optical fibers are connected

in one-to-one correspondence

OTU OUTn OMU IN nOptical fibers are connected


OMU OUT OBA IN

OSCT OUT OBA SIN

OPA SOUT

(B-direction receive terminal

equipment)

OSCT IN

OBA OUTThe A-direction optical line output (to ODF)

outside the rack

Table 3-7 A-direction receiving terminal equipment optical line connection relationships

End A End B Remarks

The A-direction optical line input (to

ODF) outside the rackOPA IN

OPA OUT ODU IN

OPA SOUTOSCT IN

(B-direction sending terminal equipment)；

ODU OUTn Each OTUR INOptical fibers are connected


Each OTUR OUTnThe A-direction STM signal output fiber

outside the rack

Optical fibers are connected


Note:

OMU MON is used for performing optical signal monitoring. ODU MON is used for performing optical signal monitoring. “N” indicates the number

of channels, which is generally 4/8/16/32.

Cautions:

-61-


1. Figure 3-5 and 3-6 show the connection methods of optical fiber. During actual operations, set the optical

fiber jumper in the wiring area, and make sure that the diameter of the jumper curve shall be over 10cm.

2. Before connecting the jumper connectors, we have to make sure that the fiber tips of the connectors are

cleaned properly. Cleaning the fiber is very important and should be done perfectly. The cleaning should be

done with a clean and new lens tissue. During cleaning one should not touch the fiber tip with hands. The

perfect cleaning can be done using absolute alcohol.

3. During the extraction of optical fiber, nip the jumper head lightly and plug it into the socket gently. If

you hear a “click” sound, it indicates that the jumper is in right position. Make sure the connection in the

right position.

4. It is forbidden to pull or drag the soft line of the fiber.

5. The optical fiber between sub-racks is connected via the optical fiber wiring area and the diversion

trench on the side of the rack. The wire guide of the rack is used for the fiber coming in or going out of the

rack.

3.8.2 Line equipment optical line connections

The line equipment optical line connection is shown as in figure 3-7 (take the actual front panel of the

board as the standard).

Figure 3-7 Line equipment optical line connection diagram

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The connection relationship of the optical line shown in figure 3-7 is listed in table 3-8.

Table 3-8 Line equipment optical line connection relationship

End A End B

The A-direction optical line input (to ODF) outside the rack OLA1 IN

OLA1 SOUT OSCL IN1

OSCL OUT1 OLA1 SIN

OLA1 OUT The A-direction optical line output (to ODF) outside the rack

The B-direction optical line input (to ODF) outside the rack OLA2 IN

OLA2 SOUT OSCL IN2

OSCL OUT2 OLA2 SIN

OLA2 OUT The B-direction optical line output (to ODF) outside the rack

3.8.3 OADM equipment optical line connections

For the OADM equipment optical line connection, refer to figure 3-8 (take the 32-channel OADM system

as an example, and the actual front panel of a board as the standard).

-63-


Figure 3-8 OADM equipment optical line connection diagram

The connection relationship of the optical line of A-direction shown in figure 3-8 is listed in table 3-9.

-64-


Table 3-9 The Oadm equipment A-direction optical line connection relationship

End A(1) End A(2) Remarks

The A-direction optical line input (to

ODF) outside the rack

OPA IN

OPA SOUT OSCL IN1

OPA OUT OAD IN

OAD Dn The A-direction STM signal input fiber

outside the rack (To SDH receiver).

Optical fibers are

connected in one-

to-one

correspondence

The A-direction STM signal input fiber

outside the rack (From SDH transmitter)

.

OTU INN Optical fibers are

connected in one-

to-one

correspondence

OTU OUTN OAD An Optical fibers are

connected in one-

to-one

correspondence

OAD OUT OBA IN

OBA OUT The B-direction optical line output (to

ODF) outside the rack

OSCL OUT1 OBA SIN

-65-

4 System Testing and Debugging

4.1 Rack power-on test

1. Before the power-on test, check the connections of each interface mentioned above.

2. Turn on the rack power supply switch. If the green lamp on the rack top flashes, it indicates that the rack

power supply works normally.

3. Switch on the fan, to see if it works properly.

4. Test the sub-rack voltage, and the rating shall be –48V.

Cautions:

1. Before power-on, make sure that the input voltage of the rack is normal, with the rating as –48V, and the

allowed floating range as –40V~–60V.

2. Turn on the rack power supply switch. If the green lamp on the rack top doesn’t flash, shut off the air

switch, and check the power supply access, and the connection of alarm lamp cable.

3. Make sure the protection ground and the –48V signal ground and other electric potential is 0V.

4. If the fan doesn’t move, please check the power access.

4.2 Board power-on test

1. Make sure that the boards are correctly installed.

2. Connect the air switch, to power on the sub-racks.

3. After the setting, only the green lights flash.

Cautions:

1. At the moment of board power-on, the red and green lamps flash alternatively, indicating that the boards

are normally powered on, and are ready for configurations.

2. After the configuration, if the green lamp flashes, and the green lamp is constantly on, it indicates that

the configuration is completed, but there is alarm, which might be caused by the lack of input optical

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Chapter 5 System Testing and Debugging

signals. Please recognize the alarms according to actual conditions.

3. Before the boards are delivered from the factory, the user programs on them shall be well installed. If the

both the red and the green lamp flash at the same time, it might be caused by the lack of user program on

the board, and it is needed to download the program on-line.

4.3 Rack alarm lamp test

The rack alarm lamp is in the middle of the rack top. If only the green lamp is on, it indicates that the rack

power-on is normal without alarms, and the equipment works normally. If both the green and the red lamps

are on, it indicates that the rack has urgent alarm. If both the green and the yellow lamps are on, it indicates

that the rack has non-urgent alarm.

If there are alarms, it is possible to check the alarm contents through the “fault” function of the SMCC

network management system.

4.4 Hardware test

The equipment test at the project stage is relatively simple that is limited by the conditions, which mainly

concerns the testing of system operations. The required testing instrument includes optical power meter,

multi-wavemeter SDH analyzer, etc.

At the phase of project testing, the hardware testing of ZXWM-32 mainly includes the testing and adjusting

of main optical channel performances, involving the testing of optical power, optical SNR, error code

performances, and jittering performance, and the selection of optical attenuator, in addition, the optical

monitoring channel performance test, the order wire performance test, etc.

The test can be conducted through the combined testing method, starting from the 1~N lines of NEs of

terminal NE1 to the terminal NE2.

4.4.1 Terminal NE1 test

The procedures are as follows:

1. Test the input and output optical power of OTU

The allowed input power range of the PIN type receiver module is 0~-18dBm, and that of the APD type

receiving module is -8~-25dBm. If the input optical power exceeds the above range, it is necessary to add

a proper attenuator to the input end.

The output power range of the optical transmitting module is 0~-10dBm, and the typical value is 0dBm.

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Note: If no modulating optical signal is added to OTU, the output optical power will be different in some

way.

2. Test OMU output optical power

If the optical power meter is used for the testing, OMU output optical power can be calculated in the

following way:

General output power of OMU=the average value of the input power of each channel+10*lgN-insertion

loss

Here, “N” is the number of optical channels.

If the multi-wavemeter is used for the testing, the insertion loss is the difference between the output optical

power of each OMU channel and each OTU output power.

The insertion loss of a 8-channel system shall be less than 10dB. The insertion loss of a 16-channel system

shall be less than 14dB,and the 32-channel system shall be less 10dB(for thin film or AWG-type) or

17dB(for couple-type).

3. Adjust OBA input optical power, and test the output optical power.

Caculate the gain of OBA, to see if it meets the requirements of the specifications. The typical gain value

is 25dB.

4. Test the input and output optical power of OPA

Add an attenuator to OBA output, which accesses the OPA input end, testing the optical power of each

optical interface. OPA output gain is 17, 22, or 27dB.

5. Test the output optical power of each channel of ODU

Generally speaking, the average output optical power of each ODU channel is 5dB less than the input value

of each channel.

6. Test the input and output optical power of OSC

OSC input optical power shall be higher than –48dBm, and the typical value of output optical power is

within 0~-7dBm.

7. At the end of optical interface performance testing, connect the optical fiber of OBA and OPA.

4.4.2 Line NE test


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Chapter 5 System Testing and Debugging

1. Test the loss of line fiber

Purpose: The actual testing of line fiber loss can help to choose the volume of the optical attenuator, to

guarantee the input and output power of each optical devices to be within the working range.

Method: Measure the output optical power of the OA of the previous NE and the optical power of the line

to the current NE, and the difference between the two is the line power loss of this section, which includes

the optical fiber loss and the inserting loss.

2. Test the input and output optical power of OLA1

Test the output gain of OLA1 board, to see if it meets the specification requirements.

The typical gain of a 8×22dB system is 22dB. The typical gain of a 5×30dB system is 30dB. The typical

gain of a 3×33dB system is 33dB.

3. Test the input and output optical power of OLA2

Add an attenuator to OLA1 output, which accesses the OLA2 input end, testing the optical power of each

optical interface. The typical gain value of OLA2 is the same as that of OLA1.

4. Test the input and output optical power of OSC

OSC input optical power shall be higher than –48dBm, and the typical value of output optical power is

within 0~-7dBm.

5. At the end of optical interface performance testing, connect the optical fiber of OLA1 and OLA2.

4.4.3 Combined adjusting of system


1. Measure the signal frequency, optical power, and OSNR of each optical channel by using the multi-

wavemeter, to see if they meet the specification requirements.

It is required that the signal frequency difference be within 5GHz. The typical value of the Max. power of

each channel is 6dBm. The OSNR of MPI-R point is more than 22dB.

2. The error code of channel loopback test and the jittering performance

Perform loop testing on each channel, and use the SDH analyzer to test the error code performance and the

jittering performance.

According to the specifications, each channel shall be free of bit error in 24 hours, and the output jittering

value shall be less than 0.15UI (for the B2 filter). In addition, if conditions allow, it is also possible to test

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whether the input jittering allowance and the jittering transfer function meet the corresponding

requirements.

3. Test OW performance

Test the addressing call, group call and three-way call function of the OW telephone.

If one party calls another, he is only required to dial the OW number of the another party directly. Method

for group call: The caller dials 999, and then dials the password of the local telephone (the default password

is the local telephone number). Method for the 3-way call: the caller presses #, and then dials the number of

the second party. After hearing the answer of the second party, he then presses # again and dials the third

party number.

4.5 Software test

Log in the user and access software interface; log in the sub-network and access the sub-network

management window, to perform the following tests:

1. Set alarms and query the current and historical alarm status.

2. Set the performance and query the current and historical performance.

3. Set the security management.

4.6 System shut-down

Turn “off” the two air switches on the power supply alarm unit on the upper part of the rack, so that the

rack is in the status of power breakdown.

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5 Packaging, Delivery and Storage

5.1 Packaging

The packaging of all parts of the ZXWM-32 equipment adopts the practical vibration absorption and other

protection measures to ensure the safety of equipment during transportation.

5.1.1 Packaging of PCBs

First of all, seal the bottom seams of the packing box and write down the box numbers. Then put foam

cards for equipment into the box. Operation workers should wear anti-static wrist straps and use the air

pressure gun to clear the dusts off the inside and outside of the rack. Then connect the grounds for the rack.

Pull out the PCBs from the rack and put each PCB into an anti-static plastic bag with its connector

downward, together with two bags of desiccants. Seal the bag with transparent tape and put the bag into the

PCB packing box. Two foam cards are placed on both inter sides of the box, and one foam card is placed

between every two PCBs. Finally, put a foam card on the top of the box, together with the packing list.

If a box is not fully packed, use the foam cards to fill it. Pay attention to the degree of tightness so that the

box is in proper tightness and the PCBs will not shake in the box. The PCB should not be pressed and

damaged.

5.1.2 Packaging of cables

First, put the camouflage boards at the bottom layer, which shall cross each other and are separated with

foamed boards.

Put another layer of foam on the camouflage boards, and then put in the cables, order-wire phones, and the

coaxial cable heads that are well sealed with plastic bags.

Put some foam on the top and put in the optical fiber, and then the packing list.

If the packing box is not full, use the foam cards to fill it. Pay attention to the degree of tightness so that the

box is in proper tightness and the PCBs will not shake in the box. The PCBs should not be pressed or

damaged.

5.1.3 Complete Product Packaging

Paste the labels for anti-static wrist strap sockets on both sides of the rack, where the anti-static wrist strap

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sockets are placed.

Place two foam cards respectively on the front and the back of the rack, as well as on the two sides. Bind

them with the sealing tapes. And then, use foam to wrap the rack wholly. Enlace the rack on its upper,

middle and bottom part with tapes, and cover it with plastic bag and then enlace the rack again in the same

way. Finally, suspend the rack and seal the plastic wrap with tapes tightly without any leak. Then suspend

the rack and place it steadily into the packing box. Fill the box with foams around the rack so that the rack

does not shake in the box. Put into the packing list.

5.1.4 Computer packaging

1. Packing monitors

Pack the monitor, and seat it steadily on the foam slots in the cartoon with bottom down. And then, cover it

with another foam with the smooth surface of the foam outward. Seal the seam with tapes.

2. Packing the CPU

Pack the CPU cabinet in a plastic bag and seat it onto the foam slot evenly with bottom downward. Then

place another piece of foam on the CPU cabinet. Note that the computer number should be consistent with

the box number.

3. Packing Keyboards

Stick the label of the product serial number to the keyboard, and then put the keyboard into the keyboard

box. Then place the keyboard box on the foam in the box neatly.

4. Packing accessories

Put power wires, network lines, user manuals and software accessories into the accessory box, and then the

accessory box into the cartoon. The accessory box and the keyboard box should be parallel. After

making sure of the completeness, seal the cartoon.

5.2 Delivery

1. During shipping, products shall be handled gently so that they are not damaged. No tossing or rough

handling is allowed.

2. The products shall be placed neat and tidy on transportation vehicles, compact, safe, and reliable, so as to

prevent damage to the products during transportation due to shaking. Note that computers and board

boxes should be placed on the tops of other heavy objects.

3. During long distance transportation, the products shall not be put in open ships or trucks, and during the

transit halfway, they shall not be put in outdoor warehouses. Avoid shipping them in the same vehicles

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Chapter 6 Packaging, Delivery and Storage

together with easily combustible, explosive, and corrosive goods, and they shall not be exposed to rain,

snow, or other liquid.

5.3 Storage

1. During storage, products should be placed in the original packing. The original protective package

should be kept. Pay attention to keep the completeness of the parts and prevent losses.

2. The storehouse of the products should be kept in order and the storage amount shall be marked. The

storage environment should be kept clean and dry, with the temperature of 0℃~45 and relative℃

humidity of 5%~95%. Moisture-proof, dust-proof and anti-corrosion measures should be taken in the

storehouse.

3. Generally, the storage period should be less than half a year.

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Appendix:

A. “Optical Transmission Equipment

Installation Requirements”

1 Installation of the equipment

1. General requirements

(1) Make sure that the optical communication equipment to be installed is consistent with the principle

diagram, the installation shop drawing and the technique documents. The modifications or substitutes of

all materials, components and techniques cannot be conducted without the approval of specified

programs.

(2) The layout and wiring of complete products shall be practical, easy for assembly, testing, adjusting and

maintenance.

(3) The installation methods shall be decided as per the requirements of the technical documents. No

damage to the installation components or the declining of performances is allowed during the

installation. If mechanical processing is necessary, be sure not to damage any assembled apparatus or

component.

(4) For the installation that require fixed structures, it is required to install them firmly. Avoid such

phenomena as inclining, rocking, shaking, rotating, or deflecting.

(5) All types of gaskets shall cling to the assembly parts, and no crimple or rupture is allowed.

(6) The components at the locked position shall be smooth at locking after installation and adjusting.

(7) At the end of the installation, there shall be no remaining of metal filings or other debris.

2. Installing iron frames and racks

(1) The installation position of all iron frames and racks shall meet the requirements of the plan of

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7474

Appendix

equipment room design.

(2) The posts of iron frames shall be vertical, and the difference of both ends shall not exceed 1% of the

total length of the post.

(3) Racks shall be firmly fixed, and it shall not swag during the extracting of boards, optical fiber or cables.

(4) All fastening pieces must be tightened, and for screws of the same type, the part outside the screw cap

must be of the same length.

3. Installing boards

(1) It is required to wear the anti-static wrist strap during board extracting or plugging, and be sure that the

wrist strap is reliably connected with the screening ground of the rack.

(2) Take out the board out of the anti-static bag carefully, and check if there is any mechanical damage.

(3) Insert the board into the corresponding slot of the sub-rack following the requirements of the technical

specifications, and tighten the screws.

2 Cable installation

1. Installation cables

(1) The norm and pattern of cables shall meet the requirements of the design, and construct as per the shop

drawing.

(2) Reserve enough optical cable and optical soft lines as per the standards and designing requirements.

(3) The optical cable terminal connectors shall be installed at proper position. Keep away from any hot

source or other unsafe factors. _

(4) The optical fiber soft lines shall be laid separately, which shall be put inside the troughs or plastic

sleeves, to avoid being twisted. The curve radius shall meet the standard requirements. It is not allowed

to bind the optical fiber soft lines with other lines, in order to avoid the damage of soft lines.

2. Installing optical connectors

(1) The norms and types of all optical connectors shall meet the designing requirements, and meet the

requirements of connection loss, repeatability, and interchangeability. Make proper test on the

connection loss between installation.

(2) Keep the installed connectors clean. The connectors installed on the fiber tails that is led out of the

optical cable terminal connectors must be plugged into the optical distributors as per the construction

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requirements. The optical connectors that are not inserted into the optical distributor temporarily shall

be well covered with plastic jacket. It is forbidden to stain the surface of the optical connector.

(3) The optical fiber connector on the optical distributor shall be firmly installed, meeting technical

requirements.

3. Laying cables

(1) The norms and types of cables shall meet requirements, and the DC electric features shall meet the

related standards.

(2) The cuts of cables shall be even, and the cores or the insulation parts shall not be damaged.

(3) The high-frequency cables shall be bound individually, which shall be kept straight without crossing,

and the degree of curves shall be in consistent with other cables.

(4) The walkway cables shall be bound firmly with proper tightness. No obvious twisted lines can be seen.

The cables shall not extend out of the troughs, and no dead corner at the turning. No tapping in the

middle of the cables.

(5) Use insulation protection for the screening lines or naked lines that are possible to be short circuited.

4. Welding cable cores

(1) The insulation layer of the part of a lead terminal head that needs welding shall be peeled off, before

screwing it tight and making the process of flow soldering.

(2) Try to success in welding the welded point at one time, avoiding repeated welding or overlong welding.

(3) The welded point shall appear smooth and firm. No remained welding flux on the surface after welding.

(4) No rosin joint, missed or wrong welding.

3 Equipment appearance and on-site cleanup

1. At the end of the installation, please clean the surface of the equipment. Crew tight the rack and boards,

and close the doors.

2. Adjust the directions of optical cable and the electric cables, making sure they look neat.

3. Clean up the equipment room. Put the empty packing boxes and bags in proper place. Specified

personnel shall be appointed to keep the related documentation and accessories.

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Appendix

B “Connectors and adapters introduce”

Connectors:

1. FC/PC connector:

The FC/PC connector is a one-piece, easy assembly connector designed to be fully compliant to the NTT-FC

connector. Pre-dome zirconia ferrule and Telcordia compliant boot minimizes assembly time in the field and in

production environments.

Description:

The FC Connectors are fiber optic connectors designed to minimize assembly time in the field and in production

environments.

The connectors feature pre-assembled, one-piece construction and offer the user the added feature of a key-

adjustment mechanism.

The bodies are machined in nickel-brass and include a single mode grade, zirconia ceramic, pre-dome ferrule with

a concentricity of less than 1.0µm. The new series accommodates 3mm, 2mm, and 0.9mm fiber types.

Technical specification (Dimensions in mm):

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2. SC/PC connector:

The SSC-PE Series is a one-piece, easy assembly connector designed to be fully compliant to the NTT-SC

connector. Pre-dome zirconia ferrule and Telcordia compliant boot minimizes assembly time in the field and in

production environments.

Product FC/PC Patch cord

Mode Single mode Multi mode

Insertion loss ≤0.3dB ≤0.3dB

Return loss ≥45dB --

Repeatability ΔIL≤0.1dB, ΔRL＜5dB

Heat Cycle (-40℃~70℃) ΔIL≤0.2dB, ΔRL＜5dB

Operating Temp -40℃~+75℃

Storage Temp -45℃~+85℃

Cable Length Option

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Appendix

Description:

The SSC-PE Series SC/PC Connectors are fiber optic connectors designed to minimize assembly time in the field

and in production environments.

The connectors feature pre-assembled, one-piece construction with push-pull coupling and offer the user the

added feature of a key-adjustment mechanism.

The bodies consist of a lightweight, compact plastic housing and include a single mode grade, zirconia ceramic,

pre-dome ferrule with a concentricity of less than 1.0µm. The new series accommodates 3mm, 2mm, and 0.9mm

fiber types (Dimensions in mm).

Product SC/PC Patch cord

Mode Single mode Multi mode

Insertion loss ≤0.3dB ≤0.3dB

Return loss ≥45dB --

Repeatability ΔIL≤0.1dB, ΔRL＜5dB

Heat Cycle (-40℃~70℃) ΔIL≤0.2dB, ΔRL＜5dB

Operating Temp -40℃~+75℃

Storage Temp -45℃~+85℃

Cable Length Option

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3. SC/PC-FC/PC (Dimensions in mm)

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Appendix

Adapters:

1. FC/PC adapter:

The FC/PC adapter is a high quality; flange mount adapter designed for single mode NTT-FC connector

applications. The female-female threaded adapter is fully compliant with JIS-C-5970 and can be ordered with

either a single mode grade Phosphor Bronze or Zirconia Ceramic sleeve. Mounting is accomplished via two self-

tapping screws.

Metal body adapters are made from precision milled nickel/brass construction and incorporate ultra-pure

Phosphor Bronze or Zirconia Ceramic compliant split sleeves (Dimensions in mm).

2. SC/PC adapter:

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The SSC-A1 Series is a tight tolerance; plastic bodied flange mount adapter designed for single mode NTT-SC

connector applications. The female-female push-pull adapter is fully compliant with JIS-C-5973 and can be

ordered with either a single mode grade Phosphor Bronze or Zirconia Ceramic sleeve. Mounting is via two metal

locking tabs attached to the body or use of two self-tapping screws.

Plastic body adapters are made from high-impact plastic injection molded to SII's exacting standards for finish and

fit. Available in standard SC to SC or hybrid SC to FC formats, the adapters are equipped with either Phosphor

Bronze or Zirconia Ceramic compliant split sleeves.

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Documents

Long Haul System Installation Manual