Samsung Electronics Co RFV01U-D2A RRU (RFV01U) User Manual RFV01U D2A Rev 01 2

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Confidential
Chapter 3
Connecting
Cables
This chapter describes the procedures to connect the cables to the system and to
label the cables.
Cabling Procedure
The following figure depicts the procedure to connect system cables.
Figure 52. Procedure to Connect System Cable
Grounding
Ground Cable Connection
Power Cabling
Power Cable Connection
CPRI Cable Connection
UDA Cable Connection
External Interface Connection
RET Cable Connection
RF Cable Connection
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Chapter 3 Connecting Cables
Guidelines for Cable Connections
The following figure depicts the procedure for cable connections.
Figure 53. Cable Connection Procedure
Cable Path Inspection
Cable Cutting
Cable Installation
Connector Attachment
When assembling the
connector at the site
Connector Assembly
Cable Binding
Identification Tag Attachment
When cutting the cable after installation, make sure that the connector is
disconnected. The cable installation while the connector is connected to the system
may cause contact failure or damage to the assembled connector and the cable due
to cable tension or the operator’s mistakes.
The sequence of cable cutting and installation of the cable workflow can be
changed depending on the field situation such as ‘cutting after installing’ or
‘installing after cutting’.
Cable Path Inspection
When installing a cable that interconnects the rectifier, the Main Ground Bar
(MGB) and the backhaul device within the system, the cable path, the length, and
the cable installation method must be inspected.
To inspect the cable path, ensure the following:

A minimum cable length must be selected provided that it does not affect the
cable installation and maintenance.

The cable must be placed in a location where it will not be damaged by
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external factors such as power line, flooding, and footpaths.

In areas where the cable may be damaged by external factors, ensure that
measures are taken to prevent damage to the cable such as cable tray, ducts,
and flexible pipe.
Cable Cutting
Measure the exact distance after carefully checking the route, and cut the cable
using a cutting tool.
To cut the cable, ensure the following:

Cut the cable to the length determined in the Cable Path Inspection step.

Use a dedicated cable-cutting tool.

Cut the cable at right angles.

Be careful to keep the cable away from any moisture, iron, lead, dust, or other
foreign material when cutting.

Remove any foreign material attached to the cable using solvent and a brush.
Cable Installation
Cable installation involves running the cable along the cabling path to the target
connector of the system or an auxiliary device. This is done after cable path
inspection and cable cutting are completed.
To install the cable, ensure the following:

Be careful not to damage the cable.

If the cable is damaged, cut out the damaged section before installing, or
replace the cable.

Run the cable so that it is not tangled. In particular, when installing a cable
from a horizontal section to a vertical section, be careful not to reverse the
upper and lower lines of the cable.

Always use the maximum curvature radius possible, and ensure that the
minimum curvature radius specification is complied with.

If the cable needs to be protected, use a suitable protective cover. For example,
a PVC channel, spiral sleeve, flexible pipe, and cable rack.

Install the DC power cable and the data transmission cable away from the AC
power cable to prevent electromagnetic induction.

The following table details the recommended minimum allowed cable bend
radius of different types of cables.
Table 19. Recommended Minimum Allowed Cable bend Radius
No
Type
Allowed Cable Bend Radius
Ground/Power Cable
8 times of the cable external diameter
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No
Type
Allowed Cable Bend Radius
Optical Cable (indoor)
Unloaded Condition (Installed)
: 20 times of cable external diameter
Loaded Condition (During
Installation)
: 40 times of cable external
diameter
Optical Cable (Outdoor)
Unloaded Condition (Installed)
: 10 times of cable external diameter
Loaded Condition
(During Installation)
: 20 times of cable external
diameter
UTP/FTP/S-FTP Cable
4 times of the cable external diameter
1/2 in. Feeder Line (Flexible)
4.92 in. (125 mm)
If the allowed cable bend radius is specified by the manufacturer, comply with the bend radius specified.
Cable Binding
Cable binding involves fixing and arranging an installed cable using binding
thread, cable ties, binding wire, and ram clamps.
To bind the cable, follow the guidelines below:

Be careful not to damage the cable during binding.

Use proper cable binding tools according to the target location (indoor or
outdoor) and the type of the cable (power supply cable, optical cable, and
feeder line).

Do not let the cutting section of the cable tie and the binding line to be
exposed to the outside. This may cause damage to cables or cause personal
injury.

Cut off the remainder of the cable thread by leaving about 50 mm of extra
length to prevent the knot from easily being untied.

If there is a danger that a contact failure may occur in a connector connection
due to tension, bind the cable at the closest location to the connector.
Connector Attachment
Connector attachment involves assembling a connector to an installed cable or to a
device on the site.
To attach the connector, follow the guidelines below:

Ensure the operator is fully aware of the connector assembly method before
assembling the connector. Assemble the connector in accordance with its pin
map.

Each connector has a hook to prevent its core positions from being changed.

Check the corresponding grooves before the connecting a connector to another
connector.

Use a heat shrink tube at the connection of the connector for cables that are
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installed outdoor, such as feeder lines, to prevent water leakage and corrosion
from occurring at the part exposed to the outside.

Connect each cable of the connector assembly in a straight line.

Be careful when connecting the cable so that the contact failure does not occur
at the connection of the connector due to tension.
Identification Tag Attachment
Identification tag attachment involves attaching a marker cable tie, nameplate, and
label at both ends of the cable (connections to a connector) to identify its use and
cabling path.
To attach an identification tag, follow the guidelines below:

When installing the cable outdoor, use relief engraving and coated labels, and
so on to prevent the markings from being erased.

Since the form and attachment method for identification tags are different for
each provider, consult with the provider before attaching them.
When connecting the cables, always connect the ground cable first. If a worker
contacts the equipment, connects the cable, or performs maintenance without
connecting the ground cable, the system can be damaged or the worker may be
injured due to static electricity or short circuit.
When performing cable work for the system, proceed with the ground work before
any other work to prevent errors occurring due to static electricity or other reasons.
After completing cable installation, unused ports should be capped.
When installing, take care not to overlap or tangle the cables; also, consider future
expansion. Install the DC power cable and data transmission cable away from the
AC power cable to prevent electromagnetic induction.
Make sure the work is done by trained personnel.
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Cabling Diagram
The following figures depict the cabling connections of the RRH.
Figure 54. Cable Diagram_RF Connection: 2T2R
2) Power Cable
Rectifier
5) RET Cable
RF Antenna
1) Ground Cable
3) CPRI Cable
4) UDA Cable
6) RF Cable
CDU
External Device
MGB
[Bottom View]
* When using the TMA, the RET cables are not connected.
Figure 55. Cable Diagram_ RF Connection: 2T4R, 4T4R
2) Power Cable
Rectifier
3) CPRI Cable
1) Ground Cable
6) RF Cable
4) UDA Cable
5) RET Cable
RF Antenna
CDU
External Device
MGB
[Bottom View]
The following table details the RRH cable connections.
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Table 20. RRH Connection Cable
From
To
Cable
MGB
RRH
1 Ground Cable
: AWG 8 × 1C
RRH
Rectifier
2 Power Cable
: AWG 8 × 2C
CDU
3 CPRI Cable
: Single Mode (Outdoor Type)
External Device
4 UDA Cable Assembly
RF Antenna
5 RET Cable Assembly
6 RF Cable
: 1/2 in. Feeder Line
If the cable is connected to the external equipment, the inlet hole finishing method
of the external equipment must be done after the consultation with the equipment
manufacturer (optical distribution box).
- The Cable: Power Cable, CPRI Cable, UDA Cable
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Grounding
Grounding is the process of operating an electronic system (for example, power
supplying system, communication system, and control system) stably from a
lightning, transient-current, transient-voltage, and electric noise and of preventing
injury from electric shock.
Ground equipment minimizes the electrical potential of the electronic device to
that of the ground, which is zero electrical potential, so that it can prevent the
device from occurring electrification.
Connect the ground cable first. In cabling, the connection of cables without the
connection to the ground cable may cause damage of the equipment or bodily
injury to personnel.
The purposes of the ground construction are as follows:

To prevent human life and the system from over-current, over-voltage, and
lightning.

To provide a discharge path for surge voltage generated by lightning and
power switch.

To protect the system from static electricity.

To eliminate or minimize the high-frequency potential in the system housing.

To provide a conductor for the balance and stability of high-frequency current.

To stabilize the potential of the circuit against the ground.
Connecting Ground Cable
To connect the ground cable, do the following:
1 Make sure you have the following items:
Table 21. Parts and Tools for connecting Ground Cable
Category
Description
Installation Section
MGB~RRH Ground Terminal
Cable
AWG 8 × 1C
Heat Shrink Tube
(Spec/Color/Length)
Ф 0.47 in. (12 mm)/Clear/1.96 in. (50 mm)
Pressure Terminal
MGB
Checking MGB specifications per site and preparing connecting parts
RRH




MGB
Checking MGB specifications per site and preparing connecting parts
RRH
M6 × 12L SEMS (Hex. +)/2 EA
M6 SEMS
43 lbf·in (50 kgf·cm)
Fastener
Recommended
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AWG 8
2 Hole
Hole diameter:1/4 in.(6.4 mm)
Hole spacing: 0.63 in. (16 mm)
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Category
Torque Value
Description
Working Tools








Cable Cutter
Wire Stripper
Crimping tool
Heating Gun
Nipper
Screw Driver (‘+’, No. 3)
Torque Driver (20 to 90 lbf·in.)
Screw Driver Bit (‘+’, No. 3)
For the pressure terminal of the cable, the UL listed products or equivalent should
be used.
For example, Manufacturer-Panduit
RRH: AWG8 Pressure Terminal (LCD8-14A-L)
2 Install the ground cable from the MGB to the RRH ground terminal.
Figure 56. Connecting Ground Cable (1)
Ground Cable
MGB
[Bottom View]
3 Assemble a pressure terminal and a heat shrink tube at the end of the RRH
ground cable.
4 Align the pressure terminal to the mounting hole of the RRH ground terminal.
5 Fix the pressure terminal firmly onto the RRH ground terminal using fasteners.
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Figure 57. Connecting Ground Cable (2)
Pressure Terminal
M6 SEMS (Hex. +)
Heat Shrink Tube (Clear)
Ground Cable
Support Bracket
* Install ground cable inside support bracket to have it
bound/installed with power cable
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Power Cabling
The following figure depicts the elements of the power supply device.
Figure 58. Power Equipment Elements
Commercial
Power
AC
AC Distributor
DC
Rectifier
System
Since power is applied to the system where the power cable is connected by
manipulating the circuit breaker of the rectifier, be sure to check the rectifier’s
breaker is turned off (open) before connecting the power cable to the power
connector. If the system is installed while the circuit breaker is on, the worker may
get critically injured if the cable is connected in the wrong way.
Handling the power cable incorrectly may damage the rack or cause an electric
short-circuit through the cable. Ensure the power switch on the rectifier or the
system is turned off before handling the power.
The fasteners for power cable must be tightly secured to prevent electrical
accidents.
The heat-resistant temperature of the power cable should be 90°C or more.
Install the power cable to the power port of the system by considering the radius of
curvature of its cable specification and then cut the cable. If the operator installs
the cable after cutting, there may be length difference among the core wires at the
end of the cable because of cable curvature. This may result in poor contact after
the cable is connected to the power port.
When using the same DC power source with an outdoor device, discuss with an
installation engineer of manufacturer to protect the CDU from residual surge
energy.
When using a DC power cable, it is possible to use up to 35 m for AWG 8.
However, the distance is under the condition that the cable is installed normally.
When the condition changes, the distance changes.
Install a circuit breaker to a rectifier (or power distributor) for the stable power.
The capacity of circuit breaker is 40 A. (Use UL listed circuit breakers.)
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Connecting Power Cable
To connect the power cable, do the following:
1 Make sure you have the following items:
Table 22. Parts and Tools for connecting Power Cable
Category
Description
Installation
Section
Rectifier~RRH Power Input Port
Cable
AWG 8 × 2C
(The color of the core wire can be changed according to the specification of the cable
used.)
Connector
Rectifier
Check specifications of rectifier output terminal per site and
prepare fasteners.
RRH
 JONHON
 Push Pull Type
 CT48J-1502TSCBM-07 to open
Working Tools





Cable Cutter
Wire Stripper
Compressor
Heating Gun
Nipper
The following table describes the pin connectors of the power cable.
Table 23. Power Cable/Connector Pin Map
Power Connector
Pin No.
Description
Color
Pin 1
-48 V DC
Pin 2
RTN
The color of the core wire can be changed according to the
specification of the cable used.
Bump
Groove
Pin 1
Pin 1
Pin 2
Pin 2
Groove
Bump
[System side Connector]
[Cable side Connector]
2 Install a DC power cable from the rectifier to the RRH.
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Figure 59. Connecting Power Cable (1)
Power Cable
Rectifier
[Bottom View]
3 Insert the connector aligning to the white dot of the cable side connector and
the system side connector, respectively.
4 When inserting the connector, push the shell to upper side.
Figure 60. Connecting Power Cable (2)
System side connector’s white dot
Cable side connector’s white dot
Shell
Push
When the connector is fastened tight, the white line on the system side connector
should be hidden.
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White Line
[White Line is invisible]
[White Line is visible]
The method for connecting/disconnecting the power connector is as follows:
- For connecting the connector, push the shell to upper side.
- For disconnecting the connector, pull the coupling nut to lower side.
Coupling Nut
Pull
Shell
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Push
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Interface Cable Connection
This section describes the procedures for connecting interface cables.
Remove/Insert Optical Module
If the optical module needs to be removed or inserted before connecting the cable,
follow the process below.
To remove the optical module, do the following:
1 Hang the hook of the Optical Transceiver Removal Tool on the bail of the
optical module within the system.
Figure 61. Optical Module Removal (1)
[System Inside]
Optical
Connector
Optical Module
[Front View]
Optical Transceiver
Removal Tool’s Hook
Location to hang
the Optical Transceiver
Removal Tool
Bail
2 Remove the optical module completely from the transceiver by pulling the
Optic Transceiver Removal Tool.
Figure 62. Optical Module Removal (2)
Transceiver
Optical Module
Optical Transceiver
Removal Tool
3 Remove the optical module and the jig by pressing the hook grip of the Optical
Transceiver Removal Tool.
Figure 63. Optical Module Removal (3)
To inset the optical module, do the following:
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Push the optical module into the transceiver within the connector.
Figure 64. Optical Module Inset
[System Inside]
Optical
Connector
Transceiver
Optical Module
Inset the bail of the optical module, facing the front of the system, to the port.
Optical Module Bail
Do not inset when the bail of the optic module is unlocked.
Optical Module Bail
[Raised: Lock]
[Lowered: Unlock]
Connecting CPRI Cable
To connect the CPRI cable, do the following:
1 Make sure you have the following items:
Table 24. Parts and Tools for connecting CPRI Cable
Category
Description
Installation Section
RRH L0 Port~CDU
Cable
CPRI Cable (Optical, Single Mode, for Outdoor Type)
Connector
RRH
Working Tools
Optical Connector Cleaner
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 JONHON
 Push Pull Type
 PDLC03T03 (DLC/UPC)
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In the system, the laser beam light runs through the optical cable. Handle the cable
carefully because the exposure of the laser beam on worker’s eye may cause
serious injury.
Remove the cap of the optical connector before connecting.
- Before connecting the optical cable, check if the ferrule of the connector is soiled.
Be careful to keep the cutting section away from dust or foreign material.
If the cable is soiled with foreign material, do not blow to remove them.
- Make sure to clean the connector in accordance with the cleaning directions in
Annex.
- Do not touch the ferrule at the end of optical cable because it is easy to be
damaged.
Cap
[Before Removing Cap]
[After Removing Cap]
Ferrule
Do not remove the cap of unused L1 port when installing since the CPRI cable is
connected to the L0 port only.
[L0 Port]
[L1 Port]
Using
Not Using
2 Install the CPRI cable from the RRH (L0 port) to the CDU.
Figure 65. Connecting CPRI Cable (1)
CPRI Cable
CDU
[Bottom View]
3 Separate the cap from the system side connector (L0 port).
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Figure 66. Connecting CPRI Cable (2)
UDA Port
L0 Port
L1 Port
L1 Port
Cap
L0 Port
4 Separate the cap from the cable side connector.
Figure 67. Connecting CPRI Cable (3)
Cap
Cap
Cap
Cap
DLC Plug
5 The latch of cable side connector should be toward the rear side.
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Figure 68. Connecting CPRI Cable (4)
Front Side
Rear Side
DLC Plug Latch
Cable side
connector’s
white dot
6 Insert the DLC plug to the optical module of the system side.
Figure 69. Connecting CPRI Cable (5)
System side’s optical
module
DLC Plug
7 Insert the connector aligning to the white dot of the cable side connector and
the system side connector, respectively.
8 When inserting the connector, push the shell to the upper side.
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Figure 70. Connecting CPRI Cable (6)
System side connector’s white dot
Cable side connector’s white dot
Shell
Push
When the connector is fastened tight, the white line on the system side connector
should be hidden.
White Line
[White Line is invisible]
[White Line is visible]
The method for connecting/disconnecting the CPRI (optical) connector is as
follows:
- For connecting the connector, push the shell to upper side.
- For disconnecting the connector, pull the coupling nut to lower side.
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Coupling Nut
Shell
Pull
Push
Connecting UDA Cable
To connect the UDA cable, do the following:
1 Make sure you have the following items:
Table 25. Parts and Tools for connecting UDA Cable
Category
Description
Installation Section
External Device~RRH UDA Port
Cable
UDA Cable Assembly (AWG24, 8C, CAT5e, SFTP)
Connector
External Device
Check specifications of external device output terminal
per site and prepare fasteners.
RRH
 JONHON
 Push Pull Type
 RJ45MF-CT-07
Working Tool




Cable Cutter
Wire Stripper
Nipper
LAN Tool
Table 26. UDA Cable Pin Map
System Side
Color Map
Rectifier Side
Description
White/Orange
TX+
Orange
TX-
White/Green
RX+
Blue
White/Blue
Green
RX-
White/Brown
Brown
Shell
Shield
Shell
FGND
2 Install a UDA cable from the external device to the RRH.
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Figure 71. Connecting UDA Cable (1)
UDA Cable
External Device
[Bottom View]
3 Separate the cap from the system side connector (UDA port).
Figure 72. Connecting UDA Cable (2)
UDA Port
L0 Port
L1 Port
Cap
4 Separate the cap from the cable side connector.
Figure 73. Connecting UDA Cable (3)
Cap
Cap
5 The latch of cable side connector should be toward the front of the system.
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Figure 74. Connecting UDA Cable (4)
Front Side
Rear Side
RJ45 Plug Latch
Cable side
connector’s
white dot
6 Insert the RJ-45 plug to the system side connector.
Figure 75. Connecting UDA Cable (5)
System side RJ45 port
RJ45 Plug
7 Insert the connector aligning to the white dot of the cable side connector and
the system side connector, respectively.
8 When inserting the connector, push the shell to upper side.
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Figure 76. Connecting UDA Cable (6)
System side connector’s white dot
Cable side connector’s white dot
Shell
Push
When the connector is fastened tight, the white line on the system side connector
should be hidden.
White Line
[White Line is invisible]
[White Line is visible]
The method for connecting/disconnecting the UDA (RJ45) connector is as follows:
- For connecting the connector, push the shell to upper side.
- For disconnecting the connector, pull the coupling nut to lower side.
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Coupling Nut
Shell
Pull
Push
Connecting RET Cable
To connect the RET cable, do the following:
1 Make sure you have the following items:
Table 27. Parts for connecting RET Cable
Category
Description
Installation Section
RF Antenna~RRH RET port
Cable
RET Cable Assembly
Connector
RF Antenna
Check the RF antenna (RETu) RET connector
specification per site
RRH
AISG 2.2
Table 28. RET Cable Pin Map
Pin No
Description
Cable Color
N/C (Not Connected)
N/C (Not Connected)
RS485 B
White
GND
Blue
RS485 A
Brown
+24 V DC
Red
DC Return
Black
N/C (Not Connected)
[Male: RRH Side]
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[Female: Antenna Side]
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Before fitting the RET connector, make sure to align the hole of the female
connector to the pin of the male connector.
Hole
[Female Connector]
Pin
[Male Connector]
2 Install an RET cable from the RF antenna to the RRH RET port.
Figure 77. Connecting RET Cable (1)
RET Cable
RF Antenna’s RET
[Bottom View]
3 Separate the cap from the system side connector (RET port).
Figure 78. Connecting RET Cable (2)
RET Port
RET Port (Female)
RET Cap
4 Connect the cable side RET connector to the system side RRH RET port.
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Figure 79. Connecting RET Cable (3)
RET Port
RET Connector
RET Cable
5 Tie the system side RET cap to the RET connector with a waxed string.
Figure 80. Connecting RET Cable (4)
RET Port
RET Connector
Waxed
String
RET Cap
Connecting RF Cable
The RF cable minimum radius of curvature must be observed.
Table 29. RF Cable Minimum Radius of Curvature
Category
Description
RF cable min. radius of
1/2 in. Feeder
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Super Flexible Type
1.26 in. (32 mm)
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Category
curvature
Description
Line
Flexible Type
4.92 in. (125 mm)
To connect the RF cable, do the following:

Make sure you have the following items:
Table 30. Parts and Tools for connecting RF cable
Category
Description
Installation Section
2T2R
Connection
RF Antenna~RRH ANT1, ANT2
2T4R, 4T4R
Connection
RF Antenna~RRH ANT1, ANT2, ANT3, ANT4
Cable
RF Cable Assembly (1/2 in. Feeder Line)
Connector
RF antenna
DIN Type-Male (Check the RF antenna specification and
prepare connecting parts.)
RRH
4.3-10 Type-Male
RF antenna
217 lbfin (250 kgfcm)
RRH
44 lbfin (51 kgfcm)
RF antenna
 Torque Wrench (100 to400 lbf·in)
 Torque Wrench Spanner head (apply Hex. Head: 32 mm)
 Spanner (32 mm)
RRH
 Torque Wrench (10 to 50 lbf·in)
 Torque Wrench Spanner head (apply Hex. Head: 22 mm)
 Spanner (22 mm)
Recommended Torque
Value
Working Tools
When the operator installs the antenna, the antenna must be within the protective
angle (left/right side 45° each from the central axis) to prevent from lightning
damage.
Lightning Rod
45
45
RF Antenna
To connect the RF cable_2T2R connection, do the following:
1 Install the RF cable from the RRH to the RF antenna.
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Figure 81. Connecting RF Cable_2T2R Connection (1)
RF Cable
RF Antenna
[Bottom View]
2 After connecting RF cable to the RF antenna port, push the JMA Boots up to
the connector connection.
Figure 82. Connecting RF Cable_2T2R Connection (2)
Antenna Port (Female)
JMA Boot
RF Connector (DIN Male)
RF Cable (1/2 in. Feeder Line)
As different connector types may be used depending on the RF antenna type,
check the antenna connector before connecting the cable.
3 Separate the cap of the RRH RF port (ANT1 and ANT2).
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Chapter 3 Connecting Cables
Figure 83. Connecting RF Cable_2T2R Connection (3)
ANT1 Port
ANT2 Port
Cap
Do not separate the cap of the unused RRH RF port (ANT3 and ANT4).
ANT1 Port
ANT2 Port
ANT3 Port
ANT4 Port
ANT1 Port
ANT2 Port
ANT3 Port
ANT4 Port
4 After connecting the RF cable to the RRH RF port (ANT1 and ANT2), push
the JMA Boots up to the connector connection.
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Chapter 3 Connecting Cables
Figure 84. Connecting RF Cable_2T2R Connection (4)
RF Port (4.3-10 Female) inside holes
RF Connector (4.3-10 Male)
RF Cable (1/2 in. Feeder Line)
JMA Boot
To connect the RF cable_2T4R (4T4R connection), do the following:
1 Install the RF cable from the RRH to the RF antenna.
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Chapter 3 Connecting Cables
Figure 85. Connecting RF Cable_2T4R, 4T4R Connection (1)
RF Cable
RF Antenna
[Bottom View]
2 After connecting the RRH and RF antenna, take waterproof treatment using
JMA boots (for more information, see ‘To connect the RF cable_2T2R
connection’)
Figure 86. Connecting RF Cable_2T4R, 4T4R Connection (2)
[RF Antenna side]
[RF Antenna]
[RRH side]
[RRH]
Checking RF Cable Connection
After connecting the RF cables, perform the continuity test and feeder cable return
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Chapter 3 Connecting Cables
loss to check if the RF cable is changed and measure VSWR of antenna and RF
cable.
Connection Part of System External Interface Connector
①
②
Antenna
Measure all cables of section ① and ②. The measured VSWR should be the
specification value or less. If the VSWR exceeds the specification value,
disassemble the connector and measure each section separately.
If the VSWR value for minimum cable bend radius and length of RF cable is not
applied, system may not work properly because RF signals cannot transmit or
receive smoothly. Therefore, the VSWR value for minimum cable bend radius and
length of RF cable must be checked and applied.
When measuring VSWR, if the operator opens the antenna port when the
transmission output is not completely off, a spike signal may flow into the
reception path, which may cause damage to LNA. Make sure the transmission
output is completely off when measuring VSWR.
When RF cable connection integrated RET signal and DC power is applied using
ANT1 port of RRH, RET cable should be installed separated from RF cable to RF
Antenna.
Depending on the supplier or manufacturer of antenna/arrestor, the connector type
may be different. In addition, the detail specifications of a connector may be
different depending on cable type even for the same connector type. Therefore,
check the detail specifications of the connector before preparing parts.
For example, DIN Type-Male: for 1/2 in and Feeder line, for 7/8 in. Feeder Line.
RF Cable Identification Tag Installation
Attach the identification tape to the RF cable as described in the following table.
Table 31. RF Cable Identification Tag
Category
Description
Installation
position
Attach the identification tag to the both ends of the antenna.
Materials
Use the material of aluminium coated by vinyl for the identification tag.
Fixing method
 Antenna side: Attach the tag to the feeder line using binding strings
through the two holes on the tag.
 Equipment Side: Cover up the feeder line with the tag and fix it
using binding strings through the two holes on the tag.
Identification
method
The markings must be prevented from being erased by using relief
engraving or coated labels.
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Chapter 4
Inspect the
Installation
This chapter describes the procedures to check the installation status.
The following figure depicts the overall procedure for inspecting the installation
status.
Figure 87. Installation Inspection Procedure
Inspection Plan
On-site Inspection
Inspection Checklist
Sharing Inspection Results
Inspection Checklist/Corrective Actions
Taking Corrective Actions
Checking the Results of
Corrective Actions
NO
YES
Sharing the Results of
Corrective Actions and
Preparing Preventive Plan
Inspection Plan
Create an inspection sheet per system and select an inspector to set an inspection
schedule per site.
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Chapter 4 Inspect the Installation
On-site Inspection and Inspection Checklist
The on-site inspection is to perform inspection visually or using instruments for
each specification, standard, and installation status based on the inspection
checklist at the site where the system is installed.
The inspector must record the results onto the inspection checklist during or after
field inspection.
Sharing Inspection Results and Taking Corrective Actions
The inspector must share the inspection results (inspection checklist/corrective
actions) with an installation operator and, the installation operator must take the
corrective actions if necessary after reviewing the requirements.
Checking the Results of Corrective Actions
The inspector must check if the corrective actions are properly taken. If they are
not sufficient, the inspector must ask the installation operator to take the corrective
actions again.
Sharing the Results of Corrective Actions and Preparing Preventive Plan
After the corrective actions are all completed, the inspector must share the results
with the installation operator and relevant departments. The inspector must prepare
a preventive plan to avoid the reoccurrence of the same or similar problems.
Construction Situation Checklist
The following table details the checklist for checking the installation of the RRH
and other devices.
Table 32. Construction Situation Check list
Category
Check Items
Criteria
Result
Pass
Installing
Equipment
Appearance of equipment
and mechanical parts
Equipment damage such as dent, scratch
and crack
Placement of equipment
and mechanical parts
Maintenance and horizontal/vertical
placement
Leveling condition of
equipment and
mechanical parts
Horizontal/vertical status
Validity of status and
specifications of fastening
bolt/nut/washer
Checking fasteners omission
Fail
Compliance with assembly order of
fasteners
Compliance with fastening torque value
Grounding
Insulation status
Checking electrical contact between
insulators (insulation resistance tester)
Installation of ground bar
Checking the separation of
communication/power/lightning grounding
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Chapter 4 Inspect the Installation
Category
Check Items
Criteria
Result
Pass
Cable specification
Checking the specification
Cabling
Cable damage
Fail
Proper installation route
Compliance with the radius of curvature
Cable binding status
Binding status
Binding interval
Checking binding materials
Cable connection
Assembly condition of a pressure terminal
Fastening condition of a pressure terminal
Checking compliance with fastening torque
value
Installation status of cable
tag
Position
Marking content
Checking tag installation method
Power
Installation status of power
supply
Power supply capacity
Output voltage (tester)
Installation of circuit
breaker
Checking circuit breaker capacity
Cable specification
Checking the specification
Cabling
Cable damage
Checking the limit distance
Proper installation route
Compliance with the radius of curvature
Cable binding status
Binding status
Binding interval
Checking binding materials
Cable connection
Checking cable connection (Pin Map)
Input voltage
Assembly condition of a pressure terminal
and connector
Fastening condition of a pressure terminal
and connector
Checking compliance with fastening torque
value
Installation status of cable
tag
Position
Marking content
Checking tag installation method
Other data
cables
Cable specification
Checking the specification
Cabling
Cable damage
Proper installation route
Compliance with the radius of curvature
Cable binding status
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Chapter 4 Inspect the Installation
Category
Check Items
Criteria
Result
Pass
Fail
Binding interval
Checking binding materials
Cable connection
Checking cable connection (Pin Map)
Assembly condition of a connector
Fastening condition of a connector
Checking compliance with fastening torque
value
Installation status of cable
tag
Position
Marking content
Checking tag installation method
RF
Antenna installation status
Checking specifications
Checking installation position
Checking fixing status
Checking gap between antennas
Cable specification
Checking the specification
Installation status of
arrestor
Checking the specification
Checking installation position
Checking fixing status
Cabling
Cable damage
Proper installation route
Compliance with the radius of curvature
Cable binding status
Binding status
Binding interval
Checking binding materials
Cable connection
Compliance with connector finishing
Installation status of cable
tag
Position
Marking content
Checking tag installation method
Checking compliance with fastening torque
value
Compliance with connector finishing
Installation status of cable
tag
Position
Reserved ports
Checking port cap fastening status
Cable inlet
status/Connection of
equipment I/O port
Checking fastening status (Conduit/Cable
Gland)
Cable tray and duct
Checking installation status
Status of inside/outside of
the equipment and system
surrounding area
Checking the stocking condition (waste
parts, waste materials and packing
materials)
Marking content
Checking tag installation method
Others
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Chapter 4 Inspect the Installation
Category
Check Items
Criteria
Result
Pass
Fail
Opinion
■
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Appendix A Acronyms
AC
CDU
CPRI
DC
DL
eNB
ERP
FTP
LTE
MGB
RET
RF
RRH
RTN
SEMS
UDA
UL
VSWR
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Alternating Current
Cabinet Digital Unit
Common Public Radio Interface
Direct Current
Down-Link
Evolved UTRAN Node-B
Effective Radiated Power
Foiled Twisted Pair
Long Term Evolution
Main Ground Bar
Remote Electrical Tilting
Radio Frequency
Remote Radio Head
Return
Pre-assembled Washers and Screws
User Defined Alarm
Up-Link
Voltage Standing Waveform Ratio
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Appendix B Sector Antenna
Installation
This appendix describes the procedure to install the sector antenna and the
precautions to be taken during the installation.
Cautions when Installing a Sector Antenna
When installing a sector antenna, follow the precautions below:

Sector antennas should be installed vertically. (±1°)

Antenna is the precise material, so be careful not to make damage or form
change.

When moving the antenna, use the tool suitable for rating. In addition, use the
rated carrying device that is at least 200 % or more than the antenna
considering the stability.

Be careful not to give too much pressure to the antenna.

If it rains, suspend the connection between the feeder cable and the antenna.

Fix it after adjusting the direction of antenna exactly.

Distance between the steel tower and the antenna and the distance between
send-receive antennas are based on the antenna layout.

Attach the antenna on the position specified in the drawing.

Install the antenna not to make a feature change of the antenna considering the
direction of the radiation

Connect the antenna not making the alien substance flowed so that Passive
Inter-Modulation Distortion (PIMD) is not affected.

Measure VSWR of all antennas and the value should be within the regulated
value.
When you install the antenna, the antenna must be within the protective angle
(left/right side 45° each from the central axis) to prevent the antenna from
lightning damage.
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Appendix B Sector Antenna Installation
Lightning Rod
45°
45°
Antenna
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Appendix B Sector Antenna Installation
Sector Antenna Installation
To install sector antenna, do the following:
1 Put up an antenna pole and insert the sector antenna into the antenna pole
using a fixing clamp.
2 Set the up and down tilt of the antenna to 0° and fix the fixing clamps at the
top and the bottom.
3 Adjust the tilted angle of the antenna considering the signal strength.
4 The bolts on the upper and the lower guide clamps must be loose to allow
angle adjustment of the antenna.
5 After adjusting the antenna angle, tighten up the four loose bolts on the upper
and the lower guide clamps.
Figure 88. Sector Antenna
Guide Clamp Bolt_3
Guide Clamp Bolt_1
Upper Fixing Clamp
Upper Guide Clamp
Guide Clamp Bolt_2
Pole
Main Radiation Direction
Lower Guide Clamp
Lower Fixing Clamp
Antenna Input Port
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Appendix C Clean the Optical
Connectors
Introduction
When connecting an optical cable to the system, the performance of the system
can be decreased or failures can occur if the core section of an optical connector is
dirty due to dust or foreign material. Therefore, the operator should clean the
optical connector before connecting the optical cable to the system.
When using the optical connector cleaner, use the products listed in the example
below or their equivalents.


Manufacturer-USCONEC (http://www.usconec.com)
IBCTM Brand Cleaner (P/N: 9393): For LC-LC and MU Connector
Cleaning
IBCTM Brand Cleaner (P/N: 9392): For SC Connector Cleaning
IBCTM Brand Cleaner (P/N: 12910): For ODC Connector Cleaning
Manufacturer-The Fibers (www.thefibers.com)
HuxCleaner 1.25 mm Type: For LC and MU Connector Cleaning
HuxCleaner 2.5 mm Type: For SC, FC and ST Connector Cleaning
Follow the manufacturer's instructions for cleaning the optical connectors.
Measuring the Optical Output and Connecting the Optical
Connector
To measure the optical output, do the following:
1 Using the optical power meter, check the optical output.
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Appendix C Clean the Optical Connectors
2 If the optical output measurement result meets the reference value, clean the
connector again and connect it.
3 If the measurement result does not meet the reference value, discard the cable,
replace it with a new cable, and then clean the new one and connect it to the
system.
[LC/PC Plug]
[Optical Power meter]
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Appendix D Standard Torque
When the operator fastens the bolt, refer to the standard torque value listed in the
following tables to prevent the equipment and the bolt from damage and secure by
fastening. When the torque value for each connection part is defined already, refer
to the defined value.
Table 33. Standard Torque Value for Fastening Bolts
Bolt Spec.
Torque Value (N·m)
Torque Value (lbf·in)
Torque Value (kgf·cm)
M3
0.63
5.6
6.4
M4
1.5
13
15
M5
2.8
25
29
M6
4.9
43
50
M8
12
110
127
M10
25
217
250
M12
42
372
428
Table 34. Brass Bolts Torque Value
Bolt Spec.
Torque Value (N·m)
Torque Value (lbf·in)
Torque Value (kgf·cm)
M6
2.9
26
30
M8
6.3
56
64
Table 35. Connector Connection Torque Value
Connector
Torque Value (N·m)
Torque Value (lbf·in)
Torque Value (kgf·cm)
SMA connector
0.59
5.2
TNC connector
0.88
7.8
N-type connector
17
20
DIN-type connector
25
217
250
4.3-10-type connector
44
51
The torque value can be different, depending on the material, characteristics, and
specification of the equipment and fastener. Make sure to check the proper torque
value for each specification of the equipment and the fastener.
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