Alcatel 1660SM System manual

8DG 15436 BAAA Ed.03
Installation Handbook
Alcatel 1660SM
STM-64 Multiservice Metro Node
1660SM Rel.5.4

8DG 15436 BAAA Ed.03
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1660SM REL.5.4 INSTALLATION HANDBOOK
03 080204 ECR61699 S. Maggio – G. Grassi A. Gorla
02 071022 ECR57448 S. Maggio – G. Grassi A. Gorla
01 070205 F. Magistrali – M.Severi A. Gorla
ED DATE CHANGE NOTE APPRAISAL AUTHORITY ORIGINATOR
1660SM Rel. 5.4
INSTALLATION GUIDE
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TABLE OF CONTENTS
1. HANDBOOK GUIDE.................................................................................................................................9
1.1. General information ..............................................................................................................................9
1.2. Scope....................................................................................................................................................9
1.3. Related document.................................................................................................................................9
1.4. Changes................................................................................................................................................9
1.5. Safety, labels and norms ....................................................................................................................10
1.5.1. Safety Rules...............................................................................................................................10
1.5.2. General Rules ............................................................................................................................10
1.6. List of abbreviation..............................................................................................................................11
1.6.1. Main acronym list .......................................................................................................................11
2. UNPACKING AND WAREHOUSING.....................................................................................................13
2.1. General ...............................................................................................................................................13
2.2. Unpacking...........................................................................................................................................13
2.2.1. Preliminary checks.....................................................................................................................13
2.2.2. Unpacking ..................................................................................................................................14
2.3. Warehousing.......................................................................................................................................14
3. MECHANICAL INSTALLATION.............................................................................................................17
3.1. 1660SM Subrack insertion into the rack.............................................................................................17
3.2. 21” rack (S9, OPTINEX) .....................................................................................................................17
3.2.1. Connection flanges assembling to the 1660SM subrack...........................................................17
3.2.2. S9 Rack......................................................................................................................................18
3.2.3. OPTINEX Rack ..........................................................................................................................18
3.3. Positioning of cables support..............................................................................................................20
3.4. Positioning of the installation tools support.........................................................................................21
3.5. Mechanical Structure..........................................................................................................................23
3.6. Fans subrack insertion into the rack...................................................................................................26
3.6.1. Fans shelf 21”.............................................................................................................................26
3.6.2. Fans shelf 19”.............................................................................................................................29
3.6.3. Subrack 3AL 89794 AB with FAN..............................................................................................31
4. 1660SM ELECTRICAL AND OPTICAL INSTALLATION......................................................................33
4.1. Equipping rules of the 1660SM equipment.........................................................................................38
4.2. 2 Mbit/s Tributary connections............................................................................................................43
4.2.1. 2 Mbit/s (75 ohm) connections...................................................................................................44
4.2.2. 2 Mbit/s (120 ohm) connections.................................................................................................45
4.3. 34 and 45 Mbit/s connections.............................................................................................................47
4.4. Electrical/optical STM-1 connections..................................................................................................51
4.4.1. 4 x STM-1 electrical ports 75 Ohm.............................................................................................51
4.4.2. 4 x STM-1 or 4 x 140/STM-1 switchable electrical/optical port..................................................55

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4.4.3. SM MM fiber connections.......................................................................................................59
4.5. Ethernet ports connections..................................................................................................................61
4.6. IP Matrix 1 Gbit/s 4xEthernet ports connections.................................................................................63
4.7. STM-1 IP Matrix connections..............................................................................................................64
4.8. Gbit Ethernet access connection.........................................................................................................65
4.9. PR_EA Matrix 1 x GB-ETH .................................................................................................................66
4.10. ISA GBEPORT connection..................................................................................................................67
4.11. 16xSTM-1 - 4xSTM-4 connections......................................................................................................68
4.12. Optical Access 12xSTM-1 connections...............................................................................................69
4.13. Electrical Access 16xSTM-1 connections...........................................................................................70
4.14. ISA Ethernet connection (ISA-ES16) ..................................................................................................71
4.15. STM-4 connections .............................................................................................................................72
4.16. STM-16 connections ...........................................................................................................................73
4.17. Optical BOOSTER connections ..........................................................................................................74
4.18. Optical 2,5 Gbit/s and 10 Gbit/s Preamplifier connection ...................................................................75
4.19. Optical STM-1 installation procedure..................................................................................................76
4.20. Electrical STM-1 installation procedure...............................................................................................79
4.21. ISA_PR connections ...........................................................................................................................81
4.22. STM-64 port S-64.2, L64.2C, L-64.2E and I-64.1 connection.............................................................83
4.23. STM-64 port S-64.2E and I-64.1E connection....................................................................................84
4.24. STM-16 slim port UP/SFP...................................................................................................................85
4.25. Installation procedure for Ethernet ports with single cable .................................................................86
4.25.1. ETHERNET ports installation on equipment already in service or installed the first time on
subracks mounting the old duct...............................................................................................................86
4.25.2. Mounting ETHERNET ports on equipment installed for the first time with subracks equipped
with the new duct.....................................................................................................................................89
4.25.3. Ethernet cable connectorization specification (single cable)......................................................89
4.26. 4xANY Host connections.....................................................................................................................92
4.27. Optical ATM 4 x 4, ATM 4 x 4 V2, ATM 4x4 D3 and ATM 8 x 8 connection.......................................93
4.28. ISA Ethernet port connections (ES4-8FE) ..........................................................................................94
4.29. ISA Ethernet switch connections (ES1-8FE).......................................................................................95
4.30. ISA (ES1-8FX) connections ................................................................................................................96
4.31. DVB-ASI connections..........................................................................................................................97
4.32. Installation hardware procedure........................................................................................................100
4.32.1. ISA BCE ports installation on the 1660SM equipment already in service or installed the first
time on subracks mounting the old duct................................................................................................101
4.33. 7xFX SFP ES-16 access connection ................................................................................................103
4.34. 4xGE SFP ES-16 access connection................................................................................................104
4.35. STM-64 port XFP pluggable connection...........................................................................................105
4.36. L-6434 connection.............................................................................................................................106
4.37. 8xDCC Concentrator connections (P8DCN).....................................................................................107
4.38. Housekeeping and Remote Alarms Connections .............................................................................108
4.39. RM Interface Connections (Rack lamps) ..........................................................................................109
4.40. QMD (Q2) Interface Connections......................................................................................................110
4.41. Q3 10 base 2 (BNC) Interface Connections......................................................................................111
4.42. Q3 10 base T (RJ45) Interface Connections.....................................................................................111
4.43. G.703, RS 232 and V11 Aux. Channels............................................................................................112
4.44. Ext. 2MHz Sync.2 Mbit/s Auxiliary channel Connections..................................................................114
4.45. RJ11 Telephone extension Connections ..........................................................................................116
4.46. RJ45 Telephone extension Connections ..........................................................................................116
4.47. Phone Jack........................................................................................................................................116
4.48. Power Supply Connections...............................................................................................................118
5. CWDM CONNECTION..........................................................................................................................121
5.1. 2xCH Transponder SFP W/O optics connections.............................................................................123
5.2. COMDX8 connections modules........................................................................................................124
5.3. COADM connections modules..........................................................................................................125
6. FANS ELECTRICAL CONNECTIONS FOR 21” FAN SHELF.............................................................127
6.1. Remote alarms connections..............................................................................................................127
6.2. Connections toward Rack lamps.......................................................................................................127
6.3. Fans power supply connections........................................................................................................127

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7. FANS ELECTRICAL CONNECTION FOR 19” FAN SHELF ..............................................................131
7.1. Power supply connections................................................................................................................132
7.2. Remote alarms connections .............................................................................................................133
ANNEXES......................................................................................................................................................135
ANNEX A PARTS MAKING UP THE INSTALLATION SET....................................................................135
ANNEX B SUGGESTED CABLING ......................................................................................................... 138
ANNEX C FANS SUBRACK PART LIST (21” VERSION) ...................................................................... 139
ANNEX D KIT CABLING ETHERNET......................................................................................................139
ANNEX E FANS SUBRACK PART LIST (19” VERSION) ...................................................................... 140

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LIST OF TABLES AND FIGURES
Tables
Table 1 – Numbering, functions and paragraphs referred to the Connection Points.......................................36
Table 2 – Matrix Gbit/s 4xEthernet...................................................................................................................63
Table 3 – Wires table .......................................................................................................................................63
Table 4 – Relation between Port Card Ethernet and Gigabit Access Module .................................................65
Table 5 – Relation between SFP and board....................................................................................................68
Table 6 – Relation between Port Card Ethernet and Access Module..............................................................69
Table 7 – Relation between SFP and board....................................................................................................69
Table 8 – Relation between Port Card Ethernet and Access Module..............................................................70
Table 9 – Relation between Port Card ISA-ES16 and Gigabit Access Module...............................................71
Table 10 – Insertion wires table .......................................................................................................................91
Table 11 – Matrix Gbit/s 4xEthernet.................................................................................................................94
Table 12 – Matrix Gbit/s 4xEthernet.................................................................................................................95
Table 13 – Relation between SFP and board..................................................................................................96
Table 14 – Relation between Port Card ISA ES-16 and ETH-AFX board .....................................................103
Table 15 – Relation between ISA ES-16 and GETH-AGR board..................................................................104
Table 16 – Matrix Gbit/s 4xEthernet...............................................................................................................107
Table 17 – Fan shelf alarm connections ........................................................................................................133
Figures
Figure 1. Connection flanges assembling to the 1660SM ...............................................................................17
Figure 2. Insertion of the 1660SM subrack into the 21” rack ...........................................................................19
Figure 3. Positioning of cables support............................................................................................................20
Figure 4. Positioning of the tools support.........................................................................................................21
Figure 5. Use of the extraction tools.................................................................................................................22
Figure 6. Mechanical structure of the subrack code 3AL 89794 AA................................................................23
Figure 7. Mechanical structure of the subrack code 3AL 89794 AB................................................................24
Figure 8. Kit fiber duct (code 3AL 81639 AA)...................................................................................................25
Figure 9. Fans subrack insertion into the rack .................................................................................................26
Figure 10. Insertion of fans modules into the subrack .....................................................................................27
Figure 11. Fan cables insertion........................................................................................................................28
Figure 12. Insertion of fan shelf 19” into the rack.............................................................................................29
Figure 13. 19” fan shelf ....................................................................................................................................30
Figure 14. Subrack code 3AL 89794 AB with the fan units installed ...............................................................31
Figure 15. Procedures for the correct installation of the fans ..........................................................................32
Figure 16. Connection points for installation....................................................................................................34
Figure 17. Connection points for installation....................................................................................................35
Figure 18. Port card (2 Mbit/s) and access module relationship......................................................................43
Figure 19. 21x2 Mbit/s (75 ohm) module connections.....................................................................................44
Figure 20. 7x2 Mbit/s (120 ohm) physical connection (T1-T3).........................................................................45
Figure 21. 21x2 Mbit/s (120 ohm ) Module connections..................................................................................46
Figure 22. Port card (34/45 Mbit/s) and access module relationship...............................................................48
Figure 23. Port card (34/45 Mbit/s) and access module relationship in 1+1 EPS protection...........................49
Figure 24. 3x34/45 Mbit/s Module connections................................................................................................50
Figure 25. 4 x STM-1 Electrical Port card ( 75 Ohm ) and access module relationship..................................52
Figure 26. 4 x STM-1 Electrical Port card ( 75 Ohm) and access module relationship in 1+1 EPS
protection.........................................................................................................................................53
Figure 27. 4 x STM-1 Electrical Module connections.......................................................................................54
Figure 28. 4 x STM-1 electrical/optical port and access module relationship..................................................55
Figure 29. 4 x STM-1 electrical/optical connections.........................................................................................57
Figure 30. Cable assembly for STM-1 Electrical module (ICMI)......................................................................58
Figure 31. Patch cord SM MM.....................................................................................................................59

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Figure 32. Patch cord SM-MM installation.......................................................................................................60
Figure 33. Port card (Ethernet) and access module relationship ....................................................................61
Figure 34. Ethernet ports connections.............................................................................................................62
Figure 35. IP Matrix 1 Gbit/s 4xEthernet..........................................................................................................63
Figure 36. STM-1 IP Matrix connections .........................................................................................................64
Figure 37. GETH-AG Gbit Ethernet access connection ..................................................................................65
Figure 38. ISA-PR_EA Matrix 1 x GB-ETH......................................................................................................66
Figure 39. ISA-Gigabit ETHERNET board.......................................................................................................67
Figure 40. 16xSTM-1 - 4xSTM-4 port front view..............................................................................................68
Figure 41. Optical Access 12xSTM-1 unit connections...................................................................................69
Figure 42. Electrical Access 16xSTM-1 connections ......................................................................................70
Figure 43. ISA Ethernet connection (ISA-ES16)..............................................................................................71
Figure 44. STM-4 connections.........................................................................................................................72
Figure 45. STM-16 connections.......................................................................................................................73
Figure 46. STM-Booster connections ..............................................................................................................74
Figure 47. Optical 2,5 Gbit/s and 10 Gbit/s preamplifier connection...............................................................75
Figure 48. Optical STM-1 connections and fiber protections positioning ........................................................77
Figure 49. Optical STM-n connections ............................................................................................................78
Figure 50. Electrical STM-n connections.........................................................................................................80
Figure 51. Units ISA_PR..................................................................................................................................81
Figure 52. ISA_PR Main Board and Access Module relationship ...................................................................82
Figure 53. STM-64 port S-64.2, L64-2C, L-64.2E and I-64.1 connection........................................................83
Figure 54. STM-64 port S-64.2E and I-64.1E connection ...............................................................................84
Figure 55. STM-16 slim port UP/SFP ..............................................................................................................85
Figure 56. Fibers removed from duct...............................................................................................................86
Figure 57. Ethernet port cable positioning.......................................................................................................87
Figure 58. Fibers support mounting.................................................................................................................87
Figure 59. Fibers support with withdrawable part............................................................................................88
Figure 60. Ethernet ports installed...................................................................................................................88
Figure 61. Assembly cable instruction.............................................................................................................89
Figure 62. Assembly cable instruction.............................................................................................................89
Figure 63. Assembly cable instruction.............................................................................................................90
Figure 64. Assembly cable instruction.............................................................................................................90
Figure 65. Assembly cable instruction.............................................................................................................90
Figure 66. Assembly cable instruction.............................................................................................................91
Figure 67. Assembly cable instruction.............................................................................................................91
Figure 68. 4xANY Host connections................................................................................................................92
Figure 69. ATM 4x4 and ATM 8x8 cards – front view .....................................................................................93
Figure 70. ISA - ES4-8FE port front view ........................................................................................................94
Figure 71. ISA - ES1-8FE port front view ........................................................................................................95
Figure 72. ISA - ES1-8FX port front view ........................................................................................................96
Figure 73. Units DVB-ASI................................................................................................................................97
Figure 74. ASI Main Board and ASI ABNC access board relationship............................................................98
Figure 75. ASI Main Board and ASI ABNC access board relationship with protection...................................99
Figure 76. ISA BCE board .............................................................................................................................100
Figure 77. 7xFX SFP ES-16 access connection front view...........................................................................103
Figure 78. 4xGE SFP ES-16 access connection front view ..........................................................................104
Figure 79. STM-64 port XFP pluggable front view.........................................................................................105
Figure 80. L-6434 front view..........................................................................................................................106
Figure 81. 8xDCC Concentrator front view....................................................................................................107
Figure 82. Housekeeping and Remote Alarm connections ...........................................................................108
Figure 83. R/M Interface connections............................................................................................................109
Figure 84. QMD (Q2) Interface connections..................................................................................................110
Figure 85. Q3 10 base 2 and Q3 10 base T..................................................................................................111
Figure 86. Physical connection......................................................................................................................112
Figure 87. G.703, RS 232 and V11 Aux. Channels connections...................................................................113
Figure 88. SIEMENS Balum assembly instruction.........................................................................................115
Figure 89. ITT Cannon Balum assembly instruction......................................................................................116
Figure 90. AUX, 2 Mbit/s Sync and telephone extension connections..........................................................117
Figure 91. Power supply connections............................................................................................................119
Figure 92. Linear topology.............................................................................................................................121
Figure 93. Add Drop.......................................................................................................................................122

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Figure 94. Regenerator ..................................................................................................................................122
Figure 95. COWLA2 front view.......................................................................................................................123
Figure 96. COMDX8 front view ......................................................................................................................124
Figure 97. COADM2 front view ......................................................................................................................125
Figure 98. Fans unit electrical installation......................................................................................................128
Figure 99. Fans unit remote alarms connections...........................................................................................129
Figure 100. Fans units power connections ....................................................................................................129
Figure 101. 19” Fans subrack cover front view..............................................................................................131
Figure 102. Electrical connections of fan unit ................................................................................................132
Figure 103. Cable for the alarm connections of the Fan shelf .......................................................................134
Figure 104. FAN-CONGI connections through DDF......................................................................................134

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1. HANDBOOK GUIDE
1.1. General information
The current procedure defines the installation modality for the 1660SM equipment.
In the present document the installation of the 1660SM equipment into the rack is not described, for the rack
and system installation see the document "System installation handbook OMSN High Capacity and Low
Capacity".
Each component utilized on the links is tested at the Factory’s Final Acceptance dept. during the system test
phase.
1.2. Scope
The scope of the following operating procedure concerns the standard configured equipment 1660SM –
Rel.5.4 installation.
1.3. Related document
DOCUMENT TYPE PART NUMBER
Technical Handbook 8DG 15436 AAAA
System Installation Low Capacity 3AL 38207 AAAA
System Installation High Capacity 3AL 38270 AAAA
1.4. Changes
EDITION DATE CHANGE NOTE
01
02
03
070205
071022
080204
First edition
Second edition
Third edition

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1.5. Safety, labels and norms
WHEN CARRYING OUT THE GIVEN OPERATIONS OBSERVE THE NORMS STATED IN THE
HANDBOOK GUIDE SECTION OF THE TECHNICAL HANDBOOK
1.5.1. Safety Rules
The Safety Rules describe the operations and/or precautions to observe to safeguard operating personnel
during the working phases and to guarantee equipment safety.
Please read them properly before starting each action on the equipment.
1.5.2. General Rules
• Check that the equipment is operating with all the shields properly positioned (dummy covers, ESD
connector protections, etc.)
• Carefully observe the front-panel warning labels prior to working on optical connections while the
equipment is in-service
• To reduce the risk of damaging the electrostatic sensitive devices, it is mandatory to use the elasticised
band (worn around the wrist) and the coiled cord connected to the rack ground when having to touch
the equipment.
FIXING THE UNITS (AND MODULES) INTO THE SUBRACK
(caution to avoid equipment damage)
The screw tightening torque for fixing the units (and modules, if any and if screw-fastened) into the
subrack must be:
2.8 kg x cm (0.28 Newton x m) ± 10 %
Exceeding this value may result in screw breaking.
ATTENTION EMC NORMS
SAFETY RULES
Carefully observe the front-
panel warning labels prior to working on
the optical connections while the equipment is in-service.

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1.6. List of abbreviation
1.6.1. Main acronym list
ADM Add/Drop Multiplexer
AIS Alarm Indication Signal
ALS Automatic Laser Shutdown
ATM Asynchronous Transfer Mode
AUX Auxiliary
AU4 Administrative unit -level 4
BATT Battery
BER Bit Error Rate
BST Optical Booster
CT Craft Terminal
DDF Digital Distribution Frame
EMI/EMC Electromagnetic interference / Electromagnetic compatibily
EPS Equipment Protection Switching
ESD Electrostatic discharges
ETSI European Telecommunication Standards Istitute
GND Ground
ICS Item Change Status
IN Input
LOSS Loss Of Signal
MS-MSPRing Multiplex Section Shared Protection Ring
ODF Optical Distribution Frame
OFA Optical Fiber Amplifier
OUT Output
ppm parts per milion
Rx Reception
SDH Synchronous Digital Hierarchy
SNC-P Subnetwork Connection Protection
STM-N Synchronous Transport Module
TRIB Tributary
Tx Trasmission
URG Urgent

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2. UNPACKING AND WAREHOUSING
2.1. General
The following procedures have been issued and must be observed when unpacking the equipment.
The reciprocal operation must be done for repacking. In such case it is recommended to use the original
packing material.
The following sturdy outer packing material is utilized in order to protect the equipment against mechanical
and climatic stresses to which they are subjected:
wooden crates for transport by ship, air, on road for periods longer than 60 days
ply-wood crates for transport by ship, air, on road for periods of 30 to 60 days
cardboard boxes for transport by air or on road for periods of less than 30 days
2.2. Unpacking
2.2.1. Preliminary checks
The following information should be printed on the outer crate:
•International symbols
side up :
keep dry
fragile
•trade mark/address of the manufacturing company;
•labels (or templated marks) indicating information on the contract and destination site of the
product;
•an envelope holding among others the packing list
Upon receipt check:
•that the final destination of the crates is that indicated on the label;
•that no damage was made to the cases
Report any shipping damages to the Company’s representative or the Shipping Agent.

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2.2.2. Unpacking
When having to unpack proceed as follows:
•make sure that the packing has been properly positioned, refer to the symbol
•open the case;
•remove the shockproof material;
•remove the goods from the case;
•remove prepacking, the polyethylene bag and any other protection;
•remove the plastic bags cellotaped to the rack and containing accessories;
•remove the dehydrating bags;
•ascertain that the goods are not damaged and that they correspond to those indicated on the
packing list enclosed in the envelope. Conversely,contact the agency’s representative.
N.B. When unpacking it is advisable to handle the packing material with care; it might be reused
for packing again if it must be reshipped.
2.3. Warehousing
If having to store the packed material, the following requirements must be met:
•the cardboard boxes must be placed indoors in airy rooms;
•the wooden or plywood cases can be placed outdoors, provided they are protected against rain
and direct sunlight.

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Caution to avoid equipment damage
Right operations for unit insertion
A B C D
a) Open the levers before to plug the unit.
b) To mate the plastic body of the connectors. Pushing on the front panel, balancing the strain without
push on the levers.
c) Push on the levers in order to finish the connector mating.
d) Fix the unit to the subrack by means of screws, before to insert another unit.
Forbidden operations for unit insertion
A B C
a) Don’t push just on one lever only.
b) Don’t force the units.
c) Avoid impact during the units handling.
NO
Screws

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Right operations for unit extraction
A B C
a) Unscrew the top and bottom screws before extracting the unit.
b) Act on the levers opening gently as shown in the picture.
c) Pull the unit as shown in the picture.
S crews

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3. MECHANICAL INSTALLATION
3.1. 1660SM Subrack insertion into the rack
The subracks can be inserted into the 21 inches “S9” rack or “OPTINEX” rack. The paragraphs that follow
illustrate the procedure adopted for both.
3.2. 21” rack (S9, OPTINEX)
Subrack fastening to the rack ensures ground protection in that the rack is wire-
connected to the station protection ground.
3.2.1. Connection flanges assembling to the 1660SM subrack
See Figure 1 on page 17.
•Fix the connection flanges (1) to the subracks by means of screws (2) and washers (3).
All the required materials are comprised in the 1660SM 19”/21” adapter (3CA 08540 AAAA)
1
1
3
3
2
2
Figure 1. Connection flanges assembling to the 1660SM
SAFETY RULES

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3.2.2. S9 Rack
•Locate the six holes on the bracket (1) used to fasten the subrack and to insert the special screws
(10).
•Insert the caged nuts (2) into the six holes on the brackets (1).
•N.B. to easily install the subrack onto the rack, tightly fasten the two special screws (10) to the
rack by means of additional caged nuts (2) set next to one of the two internal holes on the
connection flange (9).
•Place the subrack onto the special slotted screws (10)
•Fasten the subrack to the rack by inserting the screws (7) and the washers (8) into the holes on
the connection flange (9) and screw them fast into the corresponding holes (with caged nuts) on
the brackets (1) of the rack.
•Remove the special screws (10).
•Insert the two “union optical fiber duct” (11) into the subrack in the right way as indicated in detail
“C” and “D” of Figure 2. on page 19.
The caged nuts end special screws are provided with the S9 Installation kit (3AL78913AAAA), the
screws and washers are supplied together the subrack.
3.2.3. OPTINEX Rack
•Locate the six holes on the bracket (1) used to fasten the subrack and to insert the special screws
(10).
•N.B. to easily install the subrack in the rack, tightly fasten the two special screws (10) in the
rack using the two internal holes on the connection flange (9).
•Place the subrack out the special slotted screws (10).
•Fasten the subrack to the rack by inserting the screws (7) and the washers (8) into the holes on
the connection flange (9) and screw them fast into the corresponding holes (6) on the brackets (1)
of the rack.
•Insert the two “union optical fiber duct” (11) into the subrack in the right way as indicated in detail
“C” and “D” of Figure 2.on page 19.
The screws and washers are supplied together the subrack.

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X
X+20
X+28
2
1
7
FOR OPTINEX RACK ONLY FOR S9 RACK ONLY
Union optical fiber duct orientation when
the optical cable direction is from the "top"
DETAIL "C"
Union optical fiber duct orientation when
the optical cable direction is from the "bottom"
DETAIL "D"
DETAIL "A" DETAIL "B"
DETAIL "A"
DETAIL "B "
See
See
9
10
7
8
11
11
11
10
7
7
8
8
9
11
11 11
FIBER DUCT
FIBER DUCT
10
8
1
6
7
8
Free holes for
handling
Holes for Fan Shelf 19"
Free holes for
air circulations
7
8
Figure 2. Insertion of the 1660SM subrack into the 21” rack

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3.3. Positioning of cables support
(See Figure 3. on page 20)
•Fasten the two cables support (1) or (1’) to the subrack by means of the three screws (2).
The screws and the cables support are supplied together with the 1660SM subrack.
1
2
1
In alternative to the cable support (1)
1'
Figure 3. Positioning of cables support
N.B.:The cable support (1) is for 75 ohm coax cable.
The cable support (1’) is for 120 ohm pair cable.