optix_rtn_980l_v100 (1).pdf

HUAWEI TECHNOLOGIES CO., LTD.
Address: Huawei Industrial Base
Bantian, Longgang
Shenzhen 518129
People's Republic of China
Website: http://www.huawei.com
Email: support@huawei.com
No part of this document may be reproduced or transmitted in any form or by any means without prior
written consent of Huawei Technologies Co., Ltd.
and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.
All other trademarks and trade names mentioned in this document are the property of their respective
holders.
The purchased products, services and features are stipulated by the contract made between Huawei and
the customer. All or part of the products, services and features described in this document may not be
within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,
information, and recommendations in this document are provided "AS IS" without warranties, guarantees
or representations of any kind, either express or implied.
The information in this document is subject to change without notice. Every effort has been made in the
preparation of this document to ensure accuracy of the contents, but all statements, information, and
recommendations in this document do not constitute a warranty of any kind, express or implied.
Issue 03
Date 2019-12-31

Safety Precautions
General safety precautions
 To ensure human and equipment safety, observe all the safety precautions marked on the equipment and
provided in this document. The , , and marks in the document do not cover all
the safety precautions that must be followed; they only supplement general safety precautions as a whole.
 When performing operations on Huawei products or equipment, strictly observe related safety precautions and
special safety instructions. The safety precautions in this document are only some that Huawei can predict.
Huawei is not liable for any consequences that result from violation of common safety regulations or equipment
production and usage regulations.
Local rules and regulations
When operating a device, obey local rules and regulations.
Personnel
Installation and maintenance personnel must be trained to perform operations correctly and safely.
Device safety
 Before operating a device, check the electrical connection of the device to ensure that the device is securely
grounded.
 Electrostatics produced by human bodies may damage electrostatic-sensitive components on boards, for
example, a large-scale integration (LSI). Therefore, take proper safety measures, such as wearing an
electrostatic discharge (ESD) wrist strap or ESD gloves, to avoid damage to the components when
operating the boards.
 When operating storage batteries, take steps to prevent battery short circuits and electrolyte overflow or
leakage. Electrolyte overflow may corrode metal parts and boards, and ultimately cause equipment rust or
board short circuits.
Elevated locations
The RTN 980L is usually installed in an elevated location, such as on the roof of a building. Adhere to the following
guidelines for installations in elevated locations:
 Installation personnel must have the proper training and qualifications, and meet health requirements.
 Installation personnel must wear helmets and safety belts and should work in pairs or teams.
 Do not work in high places during thunderstorms, blizzards, gales, or other extreme weather conditions. When
working outdoors, installation personnel must wear clothes and gloves appropriate to the weather conditions,
and anti-slip footwear.
 Hoisting tools should be tested before use.
 All installation personnel and visitors onsite must wear helmets.
Hoisting heavy objects
 Before hoisting heavy objects, clear the area to avoid hurting anyone
nearby.
 Before hoisting heavy objects, ensure that the hoisting tools are complete
and in good condition.
 Before hoisting heavy objects, ensure that the hoisting tools are fixed to a
secure object or wall with good weight-bearing capacity.
 Ensure that the angle between the two lifting slings is less than or equal to
90 degrees during the hoisting, as shown in the figure.
Devices and installation components
When operating devices and installation components, wear clean gloves.
Avoid direct contact with devices and installation components with bare
hands or dirty gloves.
Corrosion
Anti-corrosion measures are required if an RTN 980L is installed in a location that is prone to corrosion. Contact
your local Huawei office for details. A location is prone to corrosion if it is:
 Within 3.7 km (12139 ft ) of an ocean or a salt water lake.
 Within 3 km ( 9843 ft ) of a heavy pollution source, such as a smelting factory or coal mine.
 Within 2 km ( 6562 ft ) of a medium pollution source, such as a chemical, rubber, or electroplating plant.
 Within 1 km ( 3281 ft ) of a light pollution source, such as a food or leather processing plant or industrial
boiler.
Max 90°
Microwave
High-power radio frequency signals are harmful. Avoid exposure to transmissions from the antennas of
microwave equipment that has the radiation warning symbol . When you are installing or performing
maintenance on an antenna located on a tower that has multiple antennas, be careful not to exposure yourself
to radiation from the other antennas.
IF Cable
Before installing or removing an IF cable, turn off power switch.
1

Installation Precautions in a Harsh Environment
Antenna installation requirements
 If glue dispensing is not done on the rivets or screws of the center plate and reflective surface of an antenna
before delivery, apply matching outdoor adhesive to them.
 Apply thread adhesive to screws used for installing antennas. This can prevent the screws from becoming
loose and improve corrosion resistance.
 After you finish installing screws, spread oil or spray paint on the surface of the screws.
 In areas with many birds, install protective covers to prevent birds' droppings from corroding antennas.
Definition of harsh environment
Within 3.7 km (12139 ft ) of an ocean or a salt water lake
When outdoor equipment or cabinets are installed in a harsh environment, ensure that the following requirements
are met:
Branching unit installation requirements
 Spread oil or spray paint onto the clamps of flexible/elliptical waveguides.
 After you finish installing exposed screws, spread oil or spray paint on the surface of the screws.
 In areas with many birds, install protective covers to prevent birds' droppings from corroding branching units.
IDU cabinet installation requirements
 Outdoor cabinets must be equipped with heat exchangers or air conditioners.
 The air exhaust vent of an air conditioner must not face equipment.
 Equipment rooms must be airtight. Equipment rooms and dust filters of equipment must be cleaned regularly.
 Equipment room doors must not face the wind.
 Install filler panels in vacant slots of the IDU to prevent dust accumulation in the slots and corrosion caused by
salt fog.
2

h2
120mm (4.7
in)<h1<180mm (7.1 in)
h3
One-pole installation
Space
r
Flexible
waveguid
e
1.8 m
(5.9
ft)
flexible
wavegui
de
Flexible
waveguid
e
Two-pole installation
Site Preparation
Pole requirements
A pole must meet the following requirements:
 A pole must be able to withstand the total weight of the antenna, branching uniting, and RFU.
 The diameter of a pole is 114 mm ( 4.5 in.).
 The pole length varies depending on the branching unit and antenna installation mode. The flexible waveguide length
also varies accordingly. For details, see the table below.
 When installing a branching unit and an antenna onto one pole, adjust the distance (h2) between the branching unit
and antenna based on the antenna diameter to ensure that the branching unit does not block the antenna during
antenna alignment.
 If three BUs need to be installed on a pole, the spacing between the upper and lower BUs must be greater than or
equal to 0.3 m. The actual spacing can be adjusted based on the length of the flexible waveguide.
 If the antenna is far from the branching unit, connect them using two flexible waveguides. Install a spacer between
the two flexible waveguides.
 Branching units are cascaded using 1.8 m (5.9 ft )flexible waveguides.
 The following table describes the wind resistance requirements for a pole after a branching unit and an antenna are
installed onto it.
 At a 30 m (99 ft)/s or lower wind speed, an antenna must not rotate beyond one-third of the antenna's half-power
angle.
1. It is recommended that you preferentially select a single-pole installation mode.
2. If two poles are used, the pole positions vary according to onsite environment, and flexible waveguide lengths must be determined according to
site survey. Flexible waveguide lengths provided in this table are recommended values.
3. The table above shows the minimum pole length required in different installation modes. It is recommended that the pole length selection
criteria be simplified as follows:
 If the minimum pole length required is less than or equal to 1.0 m (3.3 ft), select a 1.0 m (3.3 ft) pole.
 If the minimum pole length required is greater than 1.0 m (3.3 ft) and less than or equal to 2.0 m (6.6 ft), select a 2.0 m (6.6 ft) pole.
 If the minimum pole length required is greater than 2.0 m (6.6 ft) and less than or equal to 2.5 m (8.2 ft), select a 2.5 (8.2 ft) m pole.
 If the minimum pole length required is greater than 2.5 m (8.2 ft) and less than or equal to 3.0 m (9.9 ft), select a 3.0 m (9.9 ft) pole.
 If the minimum pole length required is greater than 3.0 m (9.9 ft) and less than or equal to 3.7m (12.1 ft) , select a 3.7 m (12.1 ft) pole.
 If the minimum pole length required is greater than 3.7 m (12.1 ft) and less than or equal to 4.7 (15.4 ft) m, select a 4.7 m (15.4 ft) pole.
3
Wind resistance requirements
Antenna
Diameter
Installation
Mode
Recommended Pole Length (≥) Flexible Waveguide Length
4+0 8+0 12+0 16+0 24+0 4+0/8+0
12+0/16+0/
24+0
0.9m (35.4 in) 单抱杆 1.6m(5.2 ft) 2.2m(7.2 ft) 3.2m (10.5 ft) 1.8m (5.9 ft)
1.2m (3.9 ft) 单抱杆 1.9m (6.2 ft) 2.5m (8.2 ft) 3.5m (11.5 ft) 1.8m (5.9 ft)
1.8m (5.9 ft)
单抱杆 2.2m (7.2 ft)
2.7m (8.9
ft)
2.9m (9.5
ft)
3.8m (12.5 ft) 1.8m (5.9 ft)
1.8m (5.9
ft)+0.9 m (3.0
ft)
双抱杆
天线 2.0m (6.6 ft) 2.0m (6.6 ft) 2.0m (6.6 ft) 1.8m (5.9
ft)+0.9 m (3.0
ft)
1.8m (5.9
ft)+1.8m (5.9
ft)
Branching
Unit
1.0m (3.3 ft) 1.6m (5.2 ft) 2.2m (7.2 ft)
2.4m (7.8 ft)
单抱杆 2.8m (9.2 ft)
3.3m
(10.8 ft)
3.5m
(11.5 ft)
4.2m (13.8 ft) 1.8m (5.9 ft)
1.8m (5.9
ft)+0.9 m (3.0
ft)
双抱杆
天线 2.0m (6.6 ft) 2.0m (6.6 ft) 2.0m (6.6 ft)
1.8m (5.9 ft)+1.8m (5.9 ft)
Branching
Unit
1.0m (3.3 ft) 1.6m (5.2 ft) 2.2m (7.2 ft)
3.0m (9.8 ft)
单抱杆 3.0m (9.9 ft)
3.5m
(11.5 ft)
3.7m
(12.1 ft)
4.4m (14.4 ft)
1.8m (5.9
ft)+0.9 m (3.0
ft)
1.8m (5.9
ft)+1.8m (5.9
ft)
双抱杆
天线 2.7m (8.9 ft) 2.7m (8.9 ft) 2.7m (8.9 ft)
1.8m (5.9 ft)+1.8m (5.9 ft)
Branching
Unit
1.0m (3.3 ft) 1.6m (5.2 ft) 2.2m (7.2 ft)
3.7m (12.1 ft)
单抱杆 4.0m (13.2 ft)
4.5m
(14.8 ft)
4.7m
(15.4 ft)
5.4m (17.7 ft)
1.8m (5.9
ft)+0.9 m (3.0
ft)
1.8m (5.9
ft)+1.8m (5.9
ft)
双抱杆
天线 2.7m (8.9 ft) 2.7m (8.9 ft) 2.7m (8.9 ft)
1.8m (5.9 ft)+1.8m (5.9 ft)
Branching
Unit
1.0m (3.3 ft) 1.6m (5.2 ft) 2.2m (7.2 ft)
Antenna
Diameter
Operating Wind
Speed
Survival Wind
Speed
Antenna
Diameter
Operating Wind
Speed
Survival Wind
Speed
0.9m (35.4 in)
200 km (656168 ft)/h 250 km (820210 ft)/h
1.8m (5.9 ft)
200 km
(656168 ft)/h
200 km
(656168 ft)/h
2.4m (7.8 ft)
110km
(360892 ft)/h
3.0m (9.8 ft)
1.2m (3.9 ft) 3.7m (12.1 ft)

DC Power Supplier
4
Purchase List (North America)
4
Ground bar
(5) IDU ground
cable terminal
(connected to an
IDU)
(6) IDU ground
cable terminal
(connected to a
ground bar)
(4) IDU ground
cable
(13) RFU ground
cable terminal
(connected to an RFU)
(3) IDU power
cable terminal
(connected to an
IDU)
(2) IDU power cable
terminal (connected to
a power supply device)
(7) IF cable
connector
(connected to an
IDU)
(8) IF cable
connector
(connected to an
RFU)
(9) IF jumper
(10) IF cable
(1) IDU indoor
power cable
(14) RFU ground cable
terminal (connected to a
ground bar)
Purchase List (North America)
(11) Ground clip for
an IF cable
(12) RFU ground
cable
(12) BU ground cable
ground bar)
BU)
Item Sub-item Remarks
IDU power cable
(1) IDU indoor power cable 10 AWG electronic power cables, each of which spans over a maximum distance of 3 m (10 ft)
(2) IDU power cable terminal (connected to a power supply device) Terminal specifications depend on the power supply device.
(3) IDU power cable terminal (connected to an IDU) OT bare crimp terminal, 10 AWG, M6
IDU ground cable
(4) IDU ground cable You are advised to use 6 AWG electronic power cables.
(5) IDU ground cable terminal (connected to an IDU) Dual OT-M6 terminal, stud spacing 15.875 mm (0.625 in.)
(6) IDU ground cable terminal (connected to a ground bar) Terminal specifications depend on the ground bar.
IF cable
(7) IF cable connector (connected to an IDU) RF coaxial connector, type TNC connector, 50 ohms, elbow/plug, male, nut installation
(8) IF cable connector (connected to an RFU) Coaxial connector, type N connector, 50 ohms, straight/plug, male, nut installation
(9) IF jumper
If cables with a diameter larger than 7.6 mm (0.3, in.) such as RG-8U or 1/2 inch cables, are used as IF cables, IF jumpers are required to
facilitate cable routing.
(10) IF cable -
(11) Ground clip for an IF cable Ground clips matching IF cables must be used for surge protection.
IF cable fixing clip IF cable fixing clips must match IF cables.
Cable tie -
RFU/BU ground cable
(12) RFU/BU ground cable You are advised to use 6 AWG electronic power cables, which support a maximum transmission distance of 20 m (65.62 ft).
(13) RFU ground cable terminal (connected to an RFU)/BU ground cable terminal (connected to a BU) Single OT-M6 terminal
(14) RFU ground cable terminal (connected to a ground bar)/BU ground cable terminal (connected to a ground bar) Terminal specifications depend on the ground bar.
The following materials are not included in the auxiliary material package provided by Huawei. You need to purchase them before installation. The installation operations in this document are for reference only.

Installation Tools
Measuring tape Phillips screwdriver Flat-head screwdriver Adjustable wrench
Level Crimping tool
Socket suite Torque wrench Hex key
Wire clippers Wire stripper Diagonal pliers COAX crimping tool Needle-nose pliers Combination pliers
Open-end wrench
File
Claw hammer
Hammer drill Marker Safety gloves
Heat gun
Multimeter ESD gloves
ESD wrist strap
Network cable tester
COAX stripper
Ladder Soldering iron Fiber binding tape PVC tape
Impact tool Vacuum cleaner
Segmented blade
utility knife
RJ45 crimping tool
Waterproof
insulation tape
Pulley Lifting sling Compass Flaring tool kit Hoisting grip Hacksaw Protection belt
Safety belt Slip-proof glove
Safety helmet Anti-skid shoes
5

1 Branching Unit (SD)
Equipment Components
2 Branching Unit (Non-SD)
6
Main cascade port
SD cascade port
Main antenna port SD antenna port Ground bolt
RFU port
Lifting eye
Guide trough
Cascade port
Antenna port
Ground bolt
RFU port
Lifting eye
Guide trough
610mm (24.03 in.)
220mm (8.67 in.)
310mm
(12.21 in.)
Size：
Wight： 25kg (55.1 lb) 610mm (24.03 in.)
220mm (8.67 in.)
310mm
(12.21 in.)
Size：
Wight： 25kg (55.1 lb)

3 RFU
RFU
4 Mounting Kits
5 Load and Short-circuit module
Load at a antenna port
or a cascade port
Load at an RFU port
Facing
upwards
Loads or short-circuit modules must be installed on
RFU ports, cascade ports, and antenna ports that are
not in use to prevent signal reflection.
Guide pin
IF port
Ground screw
RSSI test port
U-shaped clamp
7
228 mm (9
in.)
228 mm (9
in.)
91 mm
(3.58 in.)
Size:
Wight: 5.5kg (12lb)
Short-circuit module

Ground cable
 The ground terminal can be connected to the ground bar or U-shaped ground clip. Connect the ground
bar to whichever is most appropriate for the scenario.
 See the usage instructions released with the ground clip for more details.
Flexible waveguide
IF cable
Elliptical waveguide
RG-8U cable or 1/2-inch cable
5D cable
RF coaxial cable connector,
N-type, male
RF coaxial cable connector,
TNC-type, male
6 Cables
Naked crimping connector (OT type)
Ground bar
PGND cable
7 IDU
RTN 980L IDU
Logical slot layout of the RTN
980L IDU
SD cable
8
The SD cable can be used only for the
connection between the BU and the SD
antenna.

1 4+0/3+1 (Single-polarized Antenna)
Installation procedure
1 Install the RFU under the tower. For details,
go to Page 16.
2 Install the branching unit. For details, go to
Pages 16 and 17.
3 Install the antenna.
5 Install the flexible waveguide. For details, go to
Pages 18, 19 and 20.
4 Install ground cables for the branching unit
and RFU. For details, go to Page 18.
6 Install the IF cables. For details, go to Pages 25
and 26.
Installation Scenarios
IF cable
2 4+0/3+1 (Single-polarized Antenna, SD)
Flexible waveguide
Ground cable
Ground cables must be installed for all branching
units and RFUs.
For details about how to install the antenna, see the
installation guide provided by the supplier.
Branching unit Antenna
Flexible waveguide
connection
Branching unit
Antenna
IF cable
Flexible
waveguide
Ground cable
Elliptical
waveguide
1 Install the RFU under the tower. For details,
go to Page 16.
2 Install the branching unit. For details, go to
Pages 16 and 17.
3
6 Install the elliptical waveguide or SD cable. For details,
go to Pages 21-25.
7 Install the IF cables. For details, go to Pages 25 and 26.
units and RFUs.
For details about how to install the antennas, see
the specific installation guide.
Install the antennas.
5 Install the flexible waveguide. For details,
go to Pages 18, 19 and 20.
Branching unit
Connection of the flexible waveguide/elliptical waveguide
Main antenna
SD antenna
Flexible
waveguide
Use an elliptical waveguide plus a flexible waveguide or an SD
cable to connect an SD antenna port and an SD antenna.
9
Branching Unit
SD
Antenna
Main
Antenna
Load
Load

Antenna
3 8+0/7+1 (Dual-polarized Antenna)
4 8+0/7+1 (Dual-polarized Antenna, SD)
1 Install the RFU under the tower. For details, go
to Page 16.
2 Install the branching units from the top
downwards. For details, go to Pages 16 and 17.
3 Install the antennas. 5 Install the flexible waveguides. For details, go to Pages
18, 19 and 20.
4 Install ground cables for the branching unit and
RFU. For details, go to Page 18.
units and RFUs.
to Page 16.
3 Install the antennas.
5 Install the flexible waveguides. For details, go to Pages
18, 19 and 20.
4
units and RFUs.
6
Install the elliptical waveguide or SD cable. For details,
go to Pages 21-25.
For details about how to install the antennas, see the
7
Install ground cables for the branching unit and
Install the IF cables. For details, go to Pages 25 and 26.
cable to connect an SD antenna port and an SD antenna. SD
cables are recommended for the 5 GHz LH.
10
Branching Unit-2
Branching Unit-1
Flexible
waveguide
IF cable
Branching
Unit-1
Branching Unit-2
Ground
cable
Branching Unit-1
Main
Antenna
Branching Unit-2
SD
Antenna
Branching
Unit-1
SD
Antenna
Main
Antenna
Branching Unit-2
Flexible waveguide
connection
Connection of the flexible
waveguide/elliptical waveguide
Ground
cable
Flexible
waveguide
IF cable
Flexible
waveguide
Elliptical
waveguide
Load
Load

to Page 16.
3 Install the antenna. 5 Install the flexible waveguides. For details, go to Pages
18, 19 and 20.
units and RFUs.
Flexible
waveguide
Ground
cable
Branching
unit-1
Branching unit-2
IF cable
Branching unit-2
Branching unit-1
Antenna
Flexible waveguide connection
 When two branching units are cascaded, the frequencies of the TX high and TX low sites are arranged
in an opposite order. As shown in the following figure, f1-f8 are in ascending order, and f'1-f'8 are in
ascending order.
 Determine the TX high or low site type of a branching unit based on its nameplate. Determine the
frequencies of the main and secondary branching units based on the nameplates of the RFU ports.
11
TX low site
TX
frequency
f ’1 f ’2 f ’3 f ’4 f ’5 f ’6 f ’7 f ’8
f 1 f 2 f 3 f 4 f 5 f 6 f 7 f 8
TX spacing
TX high site
Load
Nameplate of the branching unit
TX high/low site
RFU Port1 RFU Port2 RFU Port1 RFU Port2
Branching
Unit-1
Branching
Unit-2
Branching
Unit-1
Branching
Unit-2
RFU Port3 RFU Port4 RFU Port3
RFU Port1 RFU Port2
RFU Port1 RFU Port2
RFU Port3 RFU Port4 RFU Port3
TX low site TX high site
f1
f3
f2
f4
f ’4
f ’2
f ’3
f ’1
RFU Port4
RFU Port4
Pole
Top Side Top Side
Pole
Pole
Pole
Top Side Top Side
f5 f6
f7 f8
f ’8 f ’7
f ’6 f ’5

6 8+0/7+1 (Single-polarized Antenna, SD)
Branching
unit-1
Branching unit-2
SD
antenna
Main
antenna
Flexible
waveguide
Ground cable
Branching unit-1
Main
antenna
Connection of the flexible
waveguide/elliptical
waveguide
IF cable
Elliptical
waveguide
Branching unit-2
SD
antenna
1 Install the RFU under the tower. For details, go to
Page 16.
3 Install the antennas.
5 Install the flexible waveguides. For details, go to Pages 18,
19 and 20.
4
Ground cables must be installed for all branching units
and RFUs.
6 Install the elliptical waveguide or SD cable. For details, go
to Pages 21-25.
For details about how to install the antennas, see the
Install ground cables for the branching unit and
Install the flexible waveguide connecting the SD antenna and
elliptical waveguide upon installation of the elliptical waveguide.
Flexible
waveguide
cable to connect an SD antenna port and an SD antenna.
12
 When two branching units are cascaded, the frequencies of the TX high and TX low sites are arranged in an
opposite order. As shown in the following figure, f1-f8 are in ascending order, and f'1-f'8 are in ascending order.
 Determine the TX high or low site type of a branching unit based on its nameplate. Determine the
frequencies of the main and secondary branching units based on the nameplates of the RFU ports.
TX low site
TX
frequency
f ’1 f ’2 f ’3 f ’4 f ’5 f ’6 f ’7 f ’8
f 1 f 2 f 3 f 4 f 5 f 6 f 7 f 8
TX spacing
TX high site
TX high/low site
Load
Branching
Unit-1
Branching
Unit-2
Branching
Unit-1
Branching
Unit-2
f1
f3
f2
f4
f ’4
f ’2
f ’3
f ’1
Pole
Top Side
Pole
Top Side
Pole
Top Side
Pole
Top Side
f5 f6
f7 f8
f ’8 f ’7
f ’6
f ’5

Branching Unit-2
20/21 >>
Branching
Unit-2
Branching Unit-1
Branching Unit-3
Branching Unit-1
Antenna
Branching Unit-3
Flexible
waveguide
Ground cable
Load
Load
Connection of the
flexible
waveguide/elliptical
waveguide
IF cable
5 Install the flexible waveguides. For details, go to Pages
18, 19 and 20.
to Page 16.
3 Install the antenna.
4 Install ground cables for the branching unit and
Ground cables must be installed for all branching units
and RFUs.
14
 When two branching units are cascaded, the frequencies of the TX high and TX low sites are arranged in an
opposite order. As shown in the following figure, f1-f8 are in ascending order, and f'1-f'8 are in ascending order.
 Determine the TX high or low site type of a branching unit based on its nameplate. Determine the frequencies
of the main and secondary branching units based on the nameplates of the RFU ports.
TX low site TX frequency
f ’1 f ’2 f ’3 f ’4 f ’5 f ’6 f ’7 f ’8
f 1 f 2 f 3 f 4 f 5 f 6 f 7 f 8
TX spacing
TX high site
f 9 f 10 f 11 f 12 f ’9 f ’10 f ’11 f ’12
RFU Port2
RFU Port1 RFU Port2
Branching
Unit-1
Branching
Unit-2 Branching
Unit-2
Branching
Unit-3
RFU Port4
RFU Port3
RFU Port1 RFU Port2
RFU Port1 RFU Port2
RFU Port3
RFU Port4
RFU Port3
f1
f3
f2
f4
f ’4
f ’2
f ’3
f ’1
RFU Port4
RFU Port4
RFU Port2
Branching
Unit-3
RFU Port4
f9
f11
f10
f12
Branching
Unit-1
RFU Port1 RFU Port2
RFU Port3
f ’12
f ’10
f ’11
f ’9
RFU Port4
Pole
Top Side
Pole
Top Side
Pole
Top Side
Pole
Top Side
Pole
Top Side
Pole
Top Side
f ’8 f ’7
f ’6 f ’5
f5 f6
f7 f8
TX high/low site

7 Height Difference Between the Main Antenna and SD Antenna Being Greater Than 20 m (66 ft)
 The waveguide length difference between the BU-to-main antenna and BU-to-SD
antenna must less than 25 m (82 ft).
 If SD is configured and the height difference between the main antenna and SD
antenna is greater than 20 m (66 ft), the BU must be installed at the middle position
between the two antennas, and elliptical waveguides are used to connect the BU and
antennas. Usually, a flexible waveguide is used to connect the BU and the upstream
elliptical waveguide.
Δh > 20 m (66 ft )
Example (Single-Polarized Antennas) Example (Dual-Polarized Antennas)
Main antenna
SD antenna
BU/RFU
14
Wave guide
Length ≤ 25 m
(82 ft )
Wave guide
Length ≤ 25 m
(82 ft )
Flexible
waveguide
Elliptical
waveguide
Elliptical
waveguide
Flexible
waveguide
Flexible
waveguide
Flexible
waveguide
Elliptical
waveguide
Elliptical
waveguide
Flexible
waveguide
Flexible
waveguide
Wave guide
Length ≤ 25 m
(82 ft )
Wave guide
Length ≤ 25 m
(82 ft )
When the elliptical and flexible waveguides are connected to the SD antenna, they can
be replaced by SD cables. This replacement does not apply to the main antenna. You
are advised to use the elliptical and flexible waveguides for both the SD and main
antennas.

When hoisting a branching unit, tie the branching unit to the
lifting sling using a pulley or hoisting ring, with the goal of easily
hoisting the branching unit and reducing friction damage to the
lifting sling.
Installation References
1Installing RFUs Under a Tower 2 Installing Branching Units
Installing One Branching Unit
a
1
Align the guide pin on the RFU with the guide trough on the BU. Install the RFU onto the BU.
 Install a load on any port on the branching unit that is not mounted with an RFU.
For details about how to install a load, go to Page 18.
 Be careful not to damage the gas-proof film over the waveguide port of a
branching unit.
 After the RFU is unpacked, it must be powered on within 24 hours to avoid
moisture accumulation in it.
 Do not damage the coating when you install or replace an RFU.
Partially tighten the four M6 screws of the RFU and then fully tighten them in a diagonal sequence.
Lead the lifting sling through the lifting eyes of the branching unit, tie the branching unit securely, and tie the handle
securely using traction slings. Lift the branching unit to the pole.
Guide pin
Guide trough
No touch
Gas-proof film
Apply anti-seize grease to the four M6 captive
screws and the hook on the RFU.
1
2
3
4
Check whether the frequency band information about the RFU to be installed is consistent with that about the corresponding
RFU port on the branching unit.
Frequency band
information about the
RFU port
RFU frequency
information
15
Screwing-stop surface
Installation surface
If the screwing-stop surface of the captive screw
is in complete contact with the installation surface
of the bolt holes, it indicates that the screws are
tightened.
Fixed pulley
Lifting sling
Traction sling
If RFUs were purchased half a year ago and now they need to be
installed on BUs, do not use the anti-seize grease with the RFUs.
Instead, you must locally purchase new anti-seize grease by yourselves.
2 3
Fit U-shaped clamps into the installation holes
on the branching unit.
Tighten the screws on the U-shaped clamps using
a wrench. Untie the lifting slings.

2Installing Branching Units
Installing Two Branching Units
1 5
Install an upper branching unit. Refer to the operations for installing one branching unit.
Install the upper branching unit first.
Tighten the screws on the U-shaped clamps using an adjustable wrench.
Untie the lifting slings.
b
16
4 Fit U-shaped clamps into the installation holes on the branching unit.
3 Adjust the azimuth of the branching unit to facilitate installation of the
U-shaped clamp.
2
Lead the lifting sling through the lifting eyes of the branching unit, tie the branching unit
securely, and tie the handle securely using traction slings. Lift the branching unit to the
pole.
The elevation angle between two branching units must be between 135 degrees to
180 degrees.
α

Installing Loads Or Short-circuit Modules
 Ground cables must be installed for all branching units
and RFUs.
 Apply anti-rusting grease to the ground bar or ground
point after installing the ground cable.
Ground bar
Installing Flexible Waveguides
Installing Ground Cables
Tighten the M6 screws
securely.
Align the arrow on the load
with the guide trough. Fit the
load into the RFU.
Loads or short-circuit modules must be installed for RFU
ports that are not in use.
1
2
Connecting a Flexible Waveguide
a
Use flexible waveguides when connections are required:
 The branching unit and the main antenna
 Two branching units
 In the SD configuration, the elliptical waveguide is connected to the antenna through a flexible waveguide.
1 After verifying that the flexible waveguide and the waveguide cavity of the branching unit or antenna are in the same
direction, tighten the screws. Fix the flexible waveguide using fixtures.
Spacer
M5 screw
 The flexible waveguide is available in multiple types. This procedure for
installing the flexible waveguide is provided for reference only. In actual
installation, follow the instructions delivered with the flexible waveguide.
 Spacers are used for optimal waterproof performance when PDR flange
interfaces are interconnected.For example, Spacers are required when a
flexible waveguide is connected to a 6 GHz antenna.
 Upon delivery, the antenna ports of branching unit have been covered with protective caps. Loads have been installed
on cascade ports. Do not remove the caps or loads until these ports are going to be used.
 Waterproof the connectors between the flexible waveguide and the branching unit or antenna. For details about how to
waterproof the connectors, see "Waterproofing Outdoor Connectors".
Flexible
waveguide
Spacer
17
Apply waterproofing and anti-corrosion treatments
on the connecting point of the flexible waveguide
Wrapping area:
 Distance (H) from the connecting point of the flexible waveguide to
the connector side ≥ 1 cm.
 Distance (L) from the connecting point of the flexible waveguide to
the cable side ≥ 10 cm.
Wrapping Method:
 Wrap one layer of PVC tape around the Wrapping area.
 Wrap three layers of waterproof insulation tape outside the PVC
tape.
 Wrap three layers of PVC tape outside the waterproof insulation
tape.
 Secure the tape by using outdoor binding straps at the positions 1
cm to the wrapping edges.
In this example, a flexible waveguide is
connected to an antenna. The procedure for
connecting a flexible waveguide to another
device is the same.
H≥1cm
L≥10cm
outdoor
binding
straps
2

Precautions for Installing Flexible Waveguides
b
The flexible waveguide can be bent only within its maximum twist angle and at the side with a larger area. The E-bend radius and
H-bend radius cannot be smaller than the minimum bending radius. For details about the minimum bending radius, see the
following table.
Flexible waveguide over bent
Waveguide damaged
because of being over bent
Waveguide deformed
because of being over bent
Keep protective covers of flexible waveguides well for future use.
Protective covers for flexible waveguides
H-Plane E-Plane
Server deformation
Cracks
18
Frequency Band
Minimum
H-bend radius ①
Minimum
E-bend radius ②
Maximum
Twist Degree
5 GHz 272 mm (10.7 inch) 136 mm (5.4 inch) 155 (deg/m)
6 GHz 204 mm (8.0 inch) 102 mm (4.0 inch) 214 (deg/m)
7/8 GHz 152 mm (6.0 inch) 76 mm (3.0 inch) 264 (deg/m)
10/11 GHz 127 mm (5.0 inch) 64 mm (2.5 inch) 310 (deg/m)

Fixing a Flexible Waveguide
b
Nut
Fix a flexible waveguide fixture on a pole using a hose clamp, and then adjust the length of the bolt
according to the position of the flexible waveguide.
Components of a Flexible Waveguide Fixture
Fixing a flexible waveguide fixture on a pole
1
Supporting bolt
Flexible
waveguide
sheath
Flexible
waveguide
clip
Hose clamp Fixture
19
Installing flexible waveguide sheaths
2
When fixing a 4G flexible waveguide, use the 4G flexible waveguide sheath.
5G
4G
When fixing a 5G flexible waveguide, use both the 4G and 5G flexible waveguide sheaths. Place the flexible waveguide in the 5G flexible
waveguide sheath, and then place the 5G flexible waveguide sheath in the 4G flexible waveguide sheath.
When fixing a 6G flexible waveguide, use the 6G flexible
waveguide sheath.
10/11G 7G&8G
When fixing a 7G&8G flexible waveguide, use the
7G&8G flexible waveguide sheath.
When fixing a 10/11G flexible waveguide, use both the 7G&8G and 10/11G waveguide sheaths. Place the flexible waveguide in the 10/11G
flexible waveguide sheath, and then place the 10/11G flexible waveguide sheath in the 7G&8G flexible waveguide sheath.
Fix the flexible waveguide in the fixture securely.
Installing a flexible waveguide clip
3
Fasten the
screws
Tighten the flexible
waveguide clip
Fastening screws
4
Flat-head screwdriver
Hex key

Installing Elliptical Waveguides
Installation Process
a Assembling Connectors
b
Cutting an elliptical waveguide
Keep the cutting area down, in order to avoid dirt or
copper shavings falling into the waveguide.
When cutting an elliptical waveguide and
assembling connectors, clear residues in the
elliptical waveguide.
Assembling connectors
For the method of assembling connectors for elliptic
waveguides, see the delivered connector assembling
description.
1
2
Start
① Assemble connectors.
Hoist an elliptical waveguide.
Lay out and install the elliptical
waveguide.
Waterproof connectors.
End
②
③
④
When assembling an elliptical waveguide connector,
ensure that the connector is intact and all screws are
tightened.
The elliptical waveguide connector is over
hammered, the surface of the elliptical waveguide
connector is uneven and has cracks.
Elliptical waveguide connector with
good quality
20
①
③
②
③
④
③
Flexible
waveguide

Branching Unit
Hoisting an Elliptical Waveguide
c Laying Out and Installing an Elliptical Waveguide
d
Laying out an elliptical waveguide
Hoisting grip
Sling tie
Sling tie
Elliptical
waveguide
1
Changing the bending plane of an
elliptical waveguide
Bend an elliptical waveguide by applying
force evenly along the bent parts. Do not
apply force only on the bent parts.
Bending an elliptical waveguide
h ≥ 50cm (20 in.)
Antenna Flexible
waveguide
 The part behind an elliptic waveguide connector must be kept
straight for a certain length before being bent.
 When connecting an elliptical waveguide to the branching unit,
route the elliptical waveguide straightly for at least 50cm (1.6 ft)
before bending it.
 Ensure that the bending radius of an elliptical waveguide is
larger than the minimum value of each plane.
 Do not twist an elliptical waveguide. To change the direction of
a plane, bend it twice.
Elliptical Waveguide Parameters
Protect the
connector.
r
The elliptic waveguide
must not be over bent.
The bending radius
must be large enough.
 Use a hoisting grip to hoist an elliptical waveguide
to prevent the elliptical waveguide from being
deformed due to unbalanced force.
 When using the hoisting grip, firmly secure the two
ends of the hoisting grip.
 After hoisting an elliptical waveguide, remove the
hoisting grip and keep it well, because it can be
used again if the elliptical waveguide needs to be
replaced in the future.
 Before hoisting an elliptical waveguide, use clean
cloth or paper to wrap elliptical waveguide
connectors for protection.
(Optional) Bending tool
Purchase bending tools as required for bending elliptical waveguides.
21
Item
Frequency Band
5GHz L6/U6GHz 7/8GHz 10/11GHz
Andrew model EWP43 EWP63-59W EWP77-71W EWP90S
Minimum bending radius of
plane E (mm) (in.)
381 (14 in.) (bent
multiple times)
280 (10 in.) (bent once)
260 (10 in.) (bent multiple
times)
times)
times)
Minimum bending radius of
plane H (mm) (in.)
889 (34 in.) (bent
multiple times)
740 (29 in.) (bent
multiple times)
times)
480 (19 in.) (bent
multiple times)
Outer diameter (mm) (in.) 71 (3 in)×41 (2 in) 51.1 (2 in)×29.5 (1 in) 43.6 (2 in)×25.4 (1 in) 33.5 (1 in)×20.3 (1 in)
Flange type PDR48 PDR70 PBR84 PBR100

Laying Out and Installing an Elliptical Waveguide
d
Securing the elliptical waveguide
Install clamps.
Secure the elliptical waveguide.
 Install clamps at 1m (3.28 ft) intervals in the horizontal or vertical direction.
 Install clamps at the two ends of each bent part.
a. Assembling fixture b. Screw
a. Install a clamp onto the elliptic waveguide. b. Tighten the screw on the clamp until the gap is 8
mm (0.3 in.).
8mm (0.3 in.)
Connect the elliptical waveguide to the branching unit.
Connect the elliptical waveguide to the flexible
waveguide.
Connecting the elliptical waveguide
2 3
a
b
b
a
c
Connect the flexible waveguide to the antenna.
SD antenna port
Elliptical
waveguide
Blind via
Antenna
Elliptical
waveguide
Spacer
Flexible
waveguide
Through-hole
 A spacer is required when a flexible waveguide is
connected to a 6 GHz antenna.
 A spacer is required when an elliptical waveguide is
connected to a flexible waveguide.
 When elliptical waveguides, flexible waveguides, antennas,
and branching units are connected, fix long screws into
through-holes and short screws into blind vias.
 Fasten all screws for connecting elliptical waveguides,
flexible waveguides, antennas, and branching units.
6 GHz antenna
Spacer
Flexible
waveguide
Flexible
waveguide
22

Waterproofing Connectors
e
Installing Elliptical Waveguides Installing SD Cables
Route an SD cable. Fix the SD cable.
1 2
The SD cable can be used only for the connection between the BU and the SD antenna.
Install the SD cable.
3
Install waveguide-to-coaxial converters.
a
SD
cable
Clamp
Clamp
SD cable
SD antenna
port
6G Antenna
Washer
Waveguide-to-
coaxial converter
A washer is required when a waveguide-to-coaxial converter
is installed on a 6 GHz antenna port.
Waveguide-to-
coaxial converter
 Waterproof the connectors between the elliptical waveguide and flexible waveguide and
between the elliptical waveguide and branching unit.
 For details about how to waterproof elliptical waveguide connectors, see "Waterproofing
Outdoor Connectors” on page 27.
23

Installing IF Cables
a Routing IF Cables and Making Drip Loops
Route an IF cable.
A. The IF cable should be routed from the top downwards
and should be bound at the time of routing.
B. Make drip loops for IF cables below the RFU and near
a room entry.
C. The bending radius of the IF cable should be larger
than 30 cm (11.8 in.).
D. The IF cable should be bound using outdoor cable ties
or feeder clamps every meter (3.28 ft).
Fix the IF cable using outdoor cable ties or feeder clamps.
Outdoor binding straps Feeder clamps
Make drip loops.
Drip loop
After making a drip loop for an IF cable below
the RFU, coil the IF cable around the pole to
form a loop with a diameter of 0.6 m ( 23.6 in.)
for future antenna position adjustment.
Bind the labels of IF cables.
20 cm (8 in.)
 It is recommended that you bind IF cable
labels to two ends of an IF cable and the
exit from the tower.
 It is recommended that you use the
silkscreen of an RFU port on the branching
unit as the label identification, for example,
To RFU Port 1.
Drip loop
For details about how to make an IF cable, go to Pages 29 and
30.
3
1
2 4
Installing SD Cables
b Connect the SD cable to the branching unit and antenna.
Waterproof the connectors between the SD cable and the branching unit or antenna. For details about how to waterproof
the connectors, see "Waterproofing Outdoor Connectors".
4
Waterproof area
24

Installing IF Cables
Connecting an RFU to an IDU
b
Grounding IF Cables
c
 Bind the IF cable first to prevent its type-N connector from being pulled out.
 Make drip loops for IF cables below the RFU and near a room entry.
1.7 N·
m
IF jumper
IF cable
Waterproof the connector. For details,
see "Waterproofing Outdoor
Connectors".
 If the equipment is configured with N+1 protection, the IF cable connecting to the RFU that provides the active
channel is connected to the IF jumper from the main IF board. The IF cable connecting to the RFU that
provides the standby channel is connected to the IF jumper from the standby IF board.
 If the XPIC function is enabled on the IF boards, the IF cable connecting to the vertically polarized RFU is
connected to the IF jumper from the IF board that processes vertically polarized waves, and the IF cable
connecting to the horizontally polarized RFU is connected to the IF jumper from the IF board that processes
horizontally polarized waves.
°
IDU
The place about 0.5 to 1 meter (1.64 ft to 3.28 ft ) away from
the cable entry of the equipment room or outdoor cabinet
The place on the roof edge about 1 meter (3.28 ft ) away from
the turning point of the wiring ladder
The middle point of the cable (when the cable is longer than 60
meters (197 ft ))
The ground point depends on the installation mode and the
length of the IF cable. Generally, the IF cable should be
grounded to a minimum of two points. When the IF cable is
longer than 60 meters (197 ft), add a grounding point for every
extra 30 meters (98.5 ft).
Select ground points.
Install the ground clip.
Select the installation position of the ground clip and strip off the cable sheath.
Fix and waterproof the ground clip. For details, see "Waterproofing Outdoor
Connectors".
1 2 3
1 2 3
The angle of the ground cable of the
clip and the IF cable should not be
larger than 15 degrees. When the IF
cable is vertically routed, the ground
cable of the clip should be led
downwards.
As recommended in ITU K.56, the IF cable does not need to be
separately grounded under the RFU if the RFU is properly
grounded.
1
2
a
b
c
a
b
c
a
b
25

Waterproofing Outdoor Connectors
Use the outdoor bundling strap to bind the PVC tape tight at both ends. Cut off the extra cable strap after the PVC tape is
tightened.
Waterproof the following outdoor connectors and components:
 Connectors between the elliptical waveguide and branching unit
 Connectors between the elliptical waveguide and flexible waveguide
 Connectors between the flexible waveguide and branching unit
 Connectors between the flexible waveguide and antenna
 Connectors between the IF cable and RFU
 Ground clips for IF cables
The following part describes how to waterproof the connectors between the elliptical waveguide and flexible waveguide and
connectors between the IF cable and RFU as an example. The method for waterproofing other outdoor connectors or
components is the same.
Connectors between the elliptical waveguide
and flexible waveguide
Connectors between the IF cable and RFU
Connectors between the elliptical waveguide
and flexible waveguide
Connectors between the IF cable and RFU
3
1
2
4
Wrap one layer of PVC tape.
Wrap three layers of waterproof insulation tape.
Wrap three layers of PVC tape over the waterproof insulation tape.
Connectors between the elliptical
waveguide and flexible waveguide
Connectors between the IF
cable and RFU
Connectors between the elliptical
waveguide and flexible waveguide
Connectors between the IF
cable and RFU
26

Checking Installation of Cables
Installation Check
Checking Installation of the Branching unit, RFU, and antenna
27
No. Requirement
1 Poles can bear the weight of branching units and antennas.
2
The installation position and direction of branching units meets the requirements specified in the
engineering design document.
3
The installation position and direction of antennas meets the requirements specified in the
engineering design document.
4
Antennas are correctly installed. Specifically, the side with a wider shroud faces upwards and the
side with a narrower shroud faces downwards.
5 Branching units are securely installed on poles. The connections meet wind loading requirements.
6 Antenna supports are securely installed on poles. The connections meet wind loading requirements.
7 Loads are installed for cascade ports, and RFU ports that are not in use on branching units.
8 All branching units and RFUs are grounded.
9
Branching units, flexible waveguides, and elliptical waveguides, and antennas are securely
connected.
10
The frequency bands of RFUs are consistent with these of the TX high and low sites of branching
units.
11
The main antenna ports, SD antenna ports, and cascade ports on branching units are connected
correctly.
12 Branching units are not damaged or deformed.
13
The bending radius and twisted angle of flexible waveguides and elliptical waveguides are within
the allowed range.
14
Antennas, branching units, and RFUs are in the protection range of the lightning arrester. (The
protection angle of the lightning arrester for antennas is less than 45 degrees. In mountainous and
thunder prone areas, the angle is less than 30 degrees).
15 An antenna support bar must be vertical with an antenna radome.
16
Ensure that the drainage holes on an antenna are on a vertical line. After the antenna is installed,
open the lower drainage hole.
No. Requirement
1 All outdoor connectors and ground clips are waterproofed.
2 IF cable connectors are made according to specifications. They are in good condition.
3 IF cables are not bent or twisted. The shield layer is not exposed.
4 Drip loops are made for IF cables that are led out of an RFU.
5 Before IF cables enter windows, they are grounded and have drip loops.
6 The minimum bending radius of IF cables is larger than 30 cm (11.8 in.).
7 IF cables are routed separately and tidily.
8 When IF cables are bundled on the cable ladder or cable rack, a spacing of 1 m (3.28 ft) is left.
9 Excess cables are reserved for future use.
10
IF cable labels are attached and bundled according to related requirements. The labels are
arranged neatly, facing the same direction.
11
Redundant IF cables are coiled around a pole or tower to form a loop with a diameter of at least 60
cm (23.62 in.).
12 IF cable ground points meet requirements.
13 IF cables are not bent within a range 0.5 m (1.64 ft) above and below the ground clip.
14
Ground cables are led from the top downwards and the angle between ground cables and IF cables
is less than 15 degrees.
15 For an elliptical waveguide, the portion 50 cm (1.64 ft ) to the connector is straight.
16 Elliptical waveguides are not damaged or deformed.

IDU
RFU
Making IF Cables
Making Connectors for IF Cables
a
Appendixes
Making Type-N/TNC Connectors for IF Cables
b
Clamp 2
Cut off the redundant part of
the shield layer.
Fold back the braided shield to cover clamp 1,
and bind the braided shield using clamp 2.
6 mm
0.5 mm
File the core wire head into an arc shape.
Strip off the dielectric insulation layer.
Strip off the cable sheath.
Lock nut Clamp 1
Glide the lock nut and clamp 1 over the cable.
Connect an RG-8U cable or 1/2-inch cable to an IDU through an IF jumper.
IF jumper Type-N
connector
RG-8U cable or 1/2-
inch cable
Connect a 5D cable to an IDU directly.
TNC connector
Type-N
connector
5D cable
IDU
3
1 2
4
1
2
28
16mm
(
0.63
in
)
(0.27 in.)
(0.02 in.)
RFU

Making IF Cables
Making Type-N/TNC Connectors for IF Cables
b
Appendixes
Rotate to tighten
the lock nut.
Tighten the
connector.
15 N·
m
Install the body of the connector.
Type-N
connector
cap
Assembling a Type-N connector
TNC connector
cap
Rotate to tighten the
lock nut.
Tighten the
connector.
15 N·
m
Assembling a TNC connector
Testing IF Cable Connectivity
c
Short-
circuiting line
At one end of the IF cable, use a short-circuiting line to short circuit the internal and external conductors, and then
use a multimeter to test the resistance. The resistance should be 0 ohms.
Remove the short-circuiting line, and use a multimeter to test the resistance between the internal conductor and the
external conductor The resistance is infinite.
5
a
b
29

HUAWEI TECHNOLOGIES CO., LTD.
Huawei Industrial Base Bantian Longgang
Shenzhen 518129
People's Republic of China
www.huawei.com
BNC Voltage (for RSSI) and Receive Signal Level
Look Up Table
Appendixes
30

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