Comba Telecom RX4122-B UHF Public Safety Bi-directional Amplifier User Manual
Comba Telecom Ltd. UHF Public Safety Bi-directional Amplifier
User manual
UHF PUBLIC SAFETY
BI-DIRECTIONAL
AMPLIFIER
USER MANUAL
Public Safety BDA RX-4122 Class A & Class B
QE: 1-0-1
Comba Telecom Ltd.
CriticalPoint Public Safety BDA
INSTALLATION GUIDE FOR RX-4122
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The information contained herein is the responsibility of and is approved by the
following, to whom all enquiries should be directed:
This is an unpublished work the copyright in which vests in Comba International
("Comba"). All rights reserved.
The information contained herein is confidential and the property of Comba and is
supplied without liability for errors or omissions. No part may be reproduced,
disclosed or used except as authorized by contract or other written permission. The
copyright and the foregoing restriction on reproduction and use extend to all media
in which the information may be embodied.
INSTALLATION GUIDE FOR RX-4122
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0.1 CONTENTS
Section
Page
0.1 CONTENTS ................................................................................................................................. 3
0.2 INDEX TO FIGURES AND TABLES ......................................................................................... 5
0.3 HISTORY ..................................................................................................................................... 6
0.4 GLOSSARY OF TERMS ............................................................................................................ 7
0.5 SAFETY NOTICES AND ADMONISHMENTS ......................................................................... 8
1 GENERAL INFORMATION ........................................................................................................ 9
2 EQUIPMENT DESCRIPTION .................................................................................................. 10
2.1 FUNCTIONAL BLOCK DIAGRAM ........................................................................................... 10
2.2 EQUIPMENT LAYOUT ............................................................................................................. 11
2.3 EQUIPMENT CONSTITUTION ................................................................................................ 12
3 INSTALLATION ......................................................................................................................... 13
3.1 WARNINGS AND ALERTS ...................................................................................................... 13
3.2 SITE PLANNING CONSIDERATIONS .................................................................................... 14
3.2.1 SITE PLANNING ....................................................................................................................... 14
3.2.2 INSTALLATION CHECKLIST................................................................................................... 15
3.3 INSTALLATION PROCEDURES ............................................................................................. 16
3.3.1 GOODS INWARDS INSPECTION........................................................................................... 16
3.3.2 TOOLS ....................................................................................................................................... 16
3.3.3 PREPARATION ......................................................................................................................... 16
3.3.4 WALL MOUNTING .................................................................................................................... 17
3.3.5 DRIP-LOOP ............................................................................................................................... 17
3.4 EQUIPMENT CONNECTORS ................................................................................................. 18
3.4.1 PS BDA CONNECTORS .......................................................................................................... 18
3.4.2 PS BDA LED Indicators ............................................................................................................ 20
3.4.3 GROUNDING CONNECTION .................................................................................................. 20
3.4.4 RF CABLE CONNECTION ....................................................................................................... 20
3.4.5 ETHERNET CONNECTION ..................................................................................................... 20
3.4.6 DRY CONTACT CABLE CONNECTION ................................................................................ 21
4 COMMISSIONING .................................................................................................................... 23
4.1 PRE-COMMISSIONING TASKS .............................................................................................. 23
4.2 COMMISSIONING PROCEDURE ........................................................................................... 24
5 WEB GUI ................................................................................................................................... 26
5.1 WEB GUI CONNECTION ......................................................................................................... 26
5.2 WEB GUI INTRODUCTION ..................................................................................................... 27
5.2.1 [DEVICES] ................................................................................................................................. 27
5.2.2 [COMMISSIONING] .................................................................................................................. 29
5.2.3 [FIRMWARE] ............................................................................................................................. 29
5.2.4 [MANAGEMENT]....................................................................................................................... 31
5.3 COMMISSIONING PROCEDURE ........................................................................................... 41
6 MAINTENANCE ........................................................................................................................ 48
7 APPENDICES ........................................................................................................................... 49
7.1 APPENDIX A: ............................................................................................................................ 49
7.2 APPENDIX B: TOOLS .............................................................................................................. 51
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0.2 INDEX TO FIGURES AND TABLES
Figure 1: Front, Side and Bottom Views of the PS BDA Enclosure ................................................................ 9
Figure 2: PS BDA Functional Block Diagram ............................................................................................... 10
Figure 3: Layout of the PS BDA .................................................................................................................. 11
Figure 4: Mounting Rack Overview ............................................................................................................. 16
Figure 5: PS BDA Wall Mounting ................................................................................................................ 17
Figure 6: Equipment Connectors................................................................................................................. 18
Figure 7: Commissioning Procedure ........................................................................................................... 24
Figure 8: Input IP Address .......................................................................................................................... 26
Figure 9: Input Domain Name ..................................................................................................................... 26
Figure 10: Input User Name and Password ................................................................................................. 26
Figure 11: Web GUI Main Screen ............................................................................................................... 27
Figure 12: Overview Screen........................................................................................................................ 27
Figure 13: 400MHz Screen 1 ...................................................................................................................... 28
Figure 14: 400MHz Screen 2 ...................................................................................................................... 28
Figure 15: 400MHz Screen ......................................................................................................................... 29
Figure 16: [Commissioning] Screen ............................................................................................................ 29
Figure 17: [Firmware] Screen – MCU Firmware Upgrade ............................................................................ 30
Figure 18: [Firmware] Screen – Firmware Swap .......................................................................................... 30
Figure 19: [Firmware] Screen – Module Update .......................................................................................... 30
Figure 20: [Management] Screen ................................................................................................................ 31
Figure 21: Management – Import & Export .................................................................................................. 32
Figure 22: Management – IP Setting ........................................................................................................... 33
Figure 23: Management – Comm. Setting ................................................................................................... 34
Figure 24: Management – Security ............................................................................................................. 35
Figure 25: Modify Password........................................................................................................................ 36
Figure 26: Management – Device Reset ..................................................................................................... 36
Figure 27: Management – Device Info ........................................................................................................ 37
Figure 28: Management – Isolation ............................................................................................................. 37
Figure 29: Management – RF Setting ......................................................................................................... 38
Figure 30: Management – Alarm Setting ..................................................................................................... 38
Figure 31: Management – Report ............................................................................................................... 39
Figure 32: Management – Alarm Log .......................................................................................................... 39
Figure 33: Management – Clear History Alarm ............................................................................................ 40
Figure 34: Commissioning Procedure – Start .............................................................................................. 41
Figure 35: Commissioning Procedure – Site Info. Setting ............................................................................ 41
Figure 36: Device Information Setting ......................................................................................................... 42
Figure 37: Device Sub Band Setting-Class A .............................................................................................. 42
Figure 38: Channel parameters setting-Class A .......................................................................................... 43
Figure 39: Device sub-band setting-Class B................................................................................................ 44
Figure 40: Commissioning Procedure – Isolation Detection ......................................................................... 44
Figure 41: Commissioning Procedure – Isolation Detection Confirm ............................................................ 45
Figure 42: Commissioning Procedure – Isolation Detection Failed .............................................................. 45
Figure 43: Commissioning Procedure – Isolation Detection Finish ............................................................... 46
Figure 44: Commissioning Procedure – Center Frequency Setting .............................................................. 46
Figure 45: Commissioning Procedure – Channel Number Setting ............................................................... 46
Figure 46: Commissioning Procedure – Finish ............................................................................................ 47
Table 1: Equipment Connectors .................................................................................................................. 19
Table 2: LED Indicators .............................................................................................................................. 20
Table 3: Pin Definition of Dry Contact Cable ............................................................................................... 21
Table 4: Commissioning Task Explanation .................................................................................................. 25
INSTALLATION GUIDE FOR RX-4122
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0.3 HISTORY
Change No.
ENU
Details Of Change
1
1-0-0
This manual first created and issued in Jan. 2018.
2
1-0-1
Update to add the part for Class B in
.
INSTALLATION GUIDE FOR RX-4122
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0.4 GLOSSARY OF TERMS
Abbreviation
Definition
ALC
Automatic Level Control
ATT
Attenuator
BTS
Base Transceiver Station
CH
Channel
CSA
Cross Sectional Area
dB
Decibel
dBm
Decibels relative to 1 milliwatt
DL
Downlink
DT
Donor Terminal
DPX
Duplexer
FS
Frequency Selection
Hz
Hertz
ID
Identification
IF
Intermediate Frequency
LNA
Low Noise Amplifier
LOS
Line-of-Sight
MCU
Main Control Unit
MHz
Megahertz
MT
Mobile Terminal
MTBF
Mean Time Between Failures
NF
Noise Figure
OMC
Operation & Maintenance Center
OMT
Operation & Maintenance Terminal
PA
Power Amplifier
PLL
Phase Locked Loop
PSU
Power Supply Unit
RF
Radio Frequency
SMA
Sub-Miniature A Connector
UL
Uplink
VAC
Volts Alternating Current
VDC
Volts Direct Current
VSWR
Voltage Standing Wave Ratio
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0.5 SAFETY NOTICES AND ADMONISHMENTS
This document contains safety notices in accordance with appropriate standards. In the interests of conformity
with the territory standards for the country concerned, the equivalent territorial admonishments are also shown.
Any installation, adjustment, maintenance and repair of the equipment must only be carried out by trained,
authorized personnel. At all times, personnel must comply with any safety notices and instructions.
Specific hazards are indicated by symbol labels on or near the affected parts of the equipment. The labels
conform to international standards, are triangular in shape, and are colored black on a yellow background. An
informative text label may accompany the symbol label.
Hazard labeling is supplemented by safety notices in the appropriate equipment manual. These notices contain
additional information on the nature of the hazard and may also specify precautions.
Note: The grantee is not responsible for any changes or modifications not expressly approved by the party
responsible for compliance. Such modifications could void the user’s authority to operate the equipment.
For compliance with the general population RF exposure limits, each individual antenna used for this
transmitter must be installed to provide a separation distance greater than 60.62cm or more from all persons
during normal operation and must not be co-located with any other antenna for meeting RF exposure
requirements.
Warning Notices:
These draw the attention of personnel to hazards that may cause death or injury to the operator or others.
Examples of use are cases of high voltage, laser emission, toxic substances, point of high temperature, etc.
WARNING. This is NOT a CONSUMER device. It is designed for installation by FCC LICENSEES and
QUALIFIED INSTALLERS. You MUST have an FCC LICENSE or express consent of an FCC Licensee to
operate this device. The PS BDA can be configured as Class A or Class B Signal Booster. You MUST
register Class B signal boosters (as defined in 47 CFR 90.219) online at
www.fcc.gov/signal-boosters/registration. Unauthorized use may result in significant forfeiture
penalties, including penalties in excess of $100,000 for each continuing violation.
Note: The grantee is not responsible for any changes or modifications not expressly approved by the party
responsible for compliance. Such modifications could void the user’s authority to operate the equipment.
Alert: These draw the attention of personnel to hazards that may cause damage to the equipment. An example
of use is the case of static electricity hazard.
Caution notices may also be used in the handbook to draw attention to matters that do not constitute a risk of
causing damage to the equipment but where there is a possibility of seriously impairing its performance, e.g. by
mishandling or gross maladjustment. Warnings and Cautions within the main text do not incorporate labels and
may be in shortened form.
Disconnection of the 2 RF connectors may cause damage to the equipment when power is on.
The application antenna and RF cable are not provided.
WARNING!
Use only authorized and approved antennas, cables and/or coupling devices! The use of unapproved antennas,
cables or coupling devices could cause damage and may be of violation of FCC regulations. The use of
unapproved antennas, cables and/or coupling devices is illegal under FCC regulations and may subject the
user to fine.
End of Section
INSTALLATION GUIDE FOR RX-4122
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1 GENERAL INFORMATION
The RX-4122 is a new digital public safety Bi-Directional repeater (hereafter referred to as PS BDA) designed
to protect the lives of first responders and building occupants. Through the use of digital filtering technology,
the RX-4122 helps eliminate adjacent channel interference to allow band selectivity and support 400MHz
rebanding.
Main Features
PS UHF 400MHz.
Support 32 channels total (Class A) or dual sub-bands(Class B).
Channel selective or band selective, software programmable.
Auto diagnostic.
Uplink squelch, per channel (Class A).
User adjustable gain control (AGC), UL and DL independent per channel.
Built in isolation testing (Mandatory prior to commissioning the PS BDA).
Easy commissioning and setup via Web-based GUI.
Weatherproof enclosure, IP65/NEMA4X.
Fully compliant with the 2016 NFPA 1221 Code, FCC and UL standard.
Low power consumption: less than 85W
Weight: 77 lbs (not including mounting bracket and duplexers)
Alarming output to supervised circuits for: antenna failure, signal booster failure, and etc.
The following figure shows the enclosure of the PS BDA.
390
315
270
800
Figure 1: Front, Side and Bottom Views of the PS BDA Enclosure
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2 EQUIPMENT DESCRIPTION
2.1 FUNCTIONAL BLOCK DIAGRAM
Mobile
Ant
Donor
Ant
Mobile
Power
Supply
Alarm
Indicator Main Control Unit
OMT
LAN
DT MT
BTS
DL Subband 01
BIAS
Tee
DL Subband 02 PA
PA
DL_01
DL_02
UL_01
UL_02
DL_01
DL_02
UL Subband 01
UL Subband 02
UL_01
UL_02
Digital
Integrated
module
LNA
DL_01
DL_02
LNA
UL_01
UL_02
DL_01
DL_02
UL_01
UL_02
Figure 2: PS BDA Functional Block Diagram
In the downlink path, the BTS signals are received by the donor antenna of the repeater. After the circulator, the
signals are sent to downlink filter and then the LNA module for pre-amplification and to the digital RF integrated
module for digital filtering and frequency conversion. Then the DL signals will be sent to the downlink PA to
amplify power, and filter via downlink filter, the circulator, and last, the signals are transmitted at the MT port to
the service antenna.
In the uplink path, the mobile signals are received by the service antenna. After the circulator, the signals are
sent to uplink filter, and then to LNA, digital integrated module for digital filtering, then to the PA for power
amplification and to the uplink filter, the circulator, after that, the uplink signals are sent to the donor antenna for
transmission back to the BTS.
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2.2 EQUIPMENT LAYOUT
Shown below is the internal layout of the PS BDA.
黑色开关
MT
DT
避雷器
DL FilterUL Filter
DL FilterUL Filter
DT
/DL IN MT
/DL OUT UL IN UL OUT
Front Side of 3rd Layer
(Passive Unit)
Back Side of 2nd
Layer
Front Side of 2nd Layer
(Passive Unit)
Loop
Circulator
Circulator
UL Filter DL Filter
DL FilterUL Filter
PSU
Distribution
Board MCU
+28V
+28V
GND
RF OUT
RF IN
+28V
GND
RF OUT
RF IN
DL PA
Digital Integrated
Module
+28V
Ref IN
LNA1 OUT
LNA1 IN
LNA2 IN
LNA2 OUT
UL IN
UL OUT
DL OUT
DL IN
UL PA
OUT4
IN4
OUT3IN3OUT2
IN2
OUT1
IN1
LAN
RUN
ALM
PWR
OMT
Figure 3: Layout of the PS BDA
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2.3 EQUIPMENT CONSTITUTION
The typical PS BDA unit consists of the following components:
Downlink Power Amplifier (DPA): It provides power amplification for DL branches.
Uplink Power Amplifier (UPA): It provides power amplification for UL branches.
Main Control Unit (MCU): The MCU is used to monitor and control the operation of the repeater. It also
provides the communication interface for remote control and status indication. LED indicators provide the
operation status of the MCU.
Downlink Filter: The filter is used to restrain the uplink signals to achieve a better isolation between downlink
path and uplink path, to make sure the device can work in a normal duplex mode.
Uplink Filter: The filter is used to restrain the downlink signals to achieve a better isolation between downlink
path and uplink path, to make sure the device can work in a normal duplex mode.
Digital Integrated Module: Consists of RF module, digital process module and monitoring modules. The RF
module amplifies and converts the RF signal to IF signal. The Digital process module converts the IF signal into
baseband signal via AD conversion and extraction, and filtering. After that, the IF signal will be amplified and
converted to an RF signal by the RF module for RF filtering and amplification. The Monitoring module monitors
and controls the system parameters and it is the interface for both remote monitoring and local commissioning,
and at the same time control the charge and discharge of the backup battery.
Power Supply Unit (PSU): The PSU converts the input voltage into a stable DC supply to provide power for
the internal functional modules.
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3 INSTALLATION
3.1 WARNINGS AND ALERTS
Radio Frequency Energies
There may be situations, particularly for workplace environments near high-powered RF sources, where
recommended limits for safe exposure of human beings to RF energy could be exceeded. In such cases,
restrictive measures or actions may be necessary to ensure the safe use of RF energy.
High Voltage
The equipment has been designed and constructed to prevent, as far as reasonably practicable danger. Any
work activity on or near equipment involving installation, operation or maintenance must be, as far as
reasonable, free from danger.
Where there is a risk of damage to electrical systems involving adverse weather, extreme temperatures, wet,
corrosive or dirty conditions, flammable or explosive atmospheres, the system must be suitably installed to
prevent danger.
Protective Earthing
Equipment provided for the purpose of protecting individuals from electrical risk must be suitable for the
purpose and properly maintained and used.
Handling Precautions
This covers a range of activities including lifting, lowering, pushing, pulling, carrying, moving, holding or
restraining an object, animal or person from the equipment. It also covers activities that require the use of force
or effort, such as pulling a lever, or operating power tools.
Where some of the abovementioned activities are required, the equipment must be handled with care to avoid
being damaged.
Electrostatic Discharge (ESD)
Observe standard precautions for handling ESD-sensitive devices. Assume that all solid-state electronic
devices are ESD-sensitive. Ensure the use of a grounded wrist strap or equivalent while working with
ESD-sensitive devices. Transport, store, and handle ESD-sensitive devices in static-safe environments.
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3.2 SITE PLANNING CONSIDERATIONS
3.2.1 SITE PLANNING
Site Considerations
Outdoor equipment are designed to be waterproof, rainproof, and with snow protection. Temporary protection
should be taken when the equipment enclosure is opened for installation or maintenance in an outdoor
environment. The equipment must not be opened for installation or maintenance in bad weather (e.g. gale,
storm rainfall, extreme temperatures and high humidity)
Installation Location
Mounting surface shall be capable of supporting the weight of the equipment.
In order to avoid electromagnetic interference, a proper mounting location must be selected to minimize
interference from electromagnetic sources such as large electrical equipment.
Environmental
Humidity has an adverse effect on the reliability of the equipment. It is recommended to install the equipment in
locations having stable temperature and unrestricted air-flow.
The installation location for the product should be well ventilated. The equipment has been designed to operate
at the temperature range and humidity level as stated in the product specifications in the datasheet.
Direct sun light exposure to the equipment should be avoided. Provide additional shelter if necessary.
Power Supply
The power supply unit (PSU) provides power to all modules within the equipment. Depending on the product
variant, it is recommended that the PSU be operated on a dedicated circuit breaker or fused circuit.
Grounding Requirement
Verify that the equipment has been well grounded. This includes antennas and all cables connected to the
system. Ensure lightning protection for the antennas is properly grounded.
Cable Routing
Depending on equipment configuration, a variety of types of cables are required. Where applicable, ensure
cables are properly routed and secured so that they are not damaged.
Manual Handling
During transportation and installation, take necessary handling precautions to avoid potential physical injury to
the installation personnel and the equipment.
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3.2.2 INSTALLATION CHECKLIST
Working space available for installation and maintenance for each mounting arrangement. Ensure
unrestricted airflow.
Ensure earth ground point is within reach of the ground wire.
Ensure a power source is within reach of the power cord and the power source has sufficient capacity.
Where appropriate, ensure unused RF connectors are terminated.
Do not locate the equipment near large transformers or motors that may cause electromagnetic
interference.
Reduce signal loss in feeder cable by minimizing the length and number of RF connections.
Ensure VSWR of antennas system < 1.5:1.
Ensure equipment will be operated within the stated environment (see datasheet)
Observe handling of all cables to prevent damage. Donor antenna should have a narrow beamwidth and
positioned in line-of-sight (LOS) to the donor BTS site so that the donor signal level is maximized. This
allows the use of minimum gain to achieve the maximum DL output power. The UL gain is typically set
lower than or equal to the DL gain to minimize noise interference to the donor BTS
Service antennas should be selected based on the type of service area, e.g., indoor antenna for indoor
application, and panel antenna for outdoor application.
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3.3 INSTALLATION PROCEDURES
3.3.1 GOODS INWARDS INSPECTION
Verify the number of packages received against the packing list.
Check all packages for external damage; report any external damage to the shipping courier. If there is
damage, a shipping agent should be present before unpacking and inspecting the contents because
damage during transit is the responsibility of the agent.
Open and check each package against the packing list. If any items are missing, contact Comba.
Do not remove items from anti-static packing until ready for installation. If damage is discovered at the
time of installation, contact the shipping agent.
3.3.2 TOOLS
See Appendix A for a full list of the recommended tools required for installation and routine maintenance.
3.3.3 PREPARATION
Wall mounting with the masonry bolts supplied, which make use of the outer holes.
382
280
85
8- 14
530
Figure 4: Mounting Rack Overview
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3.3.4 WALL MOUNTING
Drill four holes on the wall using the position of four holes on the mounting rack as a guide. Fix the
mounting rack to the wall using four masonry bolts (M10x110mm).
Install the Mounting Rack to the wall.
Hang the equipment and secure the enclosure to the mounting rack.
Mounting Rack
Expansion Bolt
M10X110
Chassis
M8X25,Hexagon
Head,
Flat Gasket,Pad
Pylons Screw
Wall
Figure 5: PS BDA Wall Mounting
3.3.5 DRIP-LOOP
Comba recommends that every horizontal cable entry to the equipment forms a 'U' before its entry to the
equipment. Water on the cable will drip down at the bottom of the loop and will not accumulate at the equipment
connectors.
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3.4 EQUIPMENT CONNECTORS
3.4.1 PS BDA CONNECTORS
The PS BDA is designed for all cable entries from the right or left of the enclosure, as shown in the following
figure.
OMT LAN ALM1 ALM2 AUX
RUN
PWR
ALM
DT/DL IN MT/DL OUT UL OUT
IN1 OUT1 IN2 OUT2 IN3 OUT3 IN4 OUT4
Figure 6: Equipment Connectors
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Table 1: Equipment Connectors
Identifier
Descriptions
Power1
Power cable connector for a pre-installed power cord for connection to AC
(e.g. AC 100-240V 50Hz/60Hz).
DT /DL IN
N-Female connector, It is downlink input port and uplink output port for Duplex mode; It is
downlink input port only for Simplex mode.
MT/DL OUT
N-Female connector, It is downlink output port and uplink input port for Duplex mode; It is
downlink output port only for Simplex mode.
UL IN
N-Female connector, It is uplink input port for Simplex mode; It is useless for Duplex
mode.
UL OUT
N-Female connector, It is uplink output port for Simplex mode; It is useless for Duplex
mode.
INxx/OUTxx
Reserved for extension
ALM1
Connector for connection to dry contact alarm 1, 2 and 3
ALM2
Connector for connection to dry contact alarm 4, 5 and 6.
AUX
External alarm 1, 2, 3 and 4.
LAN
RJ45 connector for internet connection (Ethernet type only).
OMT
RJ45 connector for local connection by WEBOMT
1
The voltage identification is a variant due to electricity system diversity of global regions. The power cable connector might
be identified for AC 110V, AC 220V, AC 110V/220V, or DC -48V respectively. Please refer to specific product or contact
local sales if any doubt.
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3.4.2 PS BDA LED Indicators
The LED indicators help user to check the equipment status easily.
Table 2: LED Indicators
Identifier
Colour
Indication
PWR
Green
Power indicator. ON = power on; OFF = power off.
RUN
Green
Operation indicator, flashes every second to indicate normal operation.
ALM
Red
Alarm indicator. ON = alarm; OFF = no alarm.
3.4.3 GROUNDING CONNECTION
Ground Connection
To ensure safe operation of the product, a ground (earth) connection is required. For single phase AC power
source, the product must be grounded by connecting the “earth wire” of the power cord to the ground terminal
of the AC supply. For operating this product with DC power system (such as rectifiers), the product should not
be connected to power systems that switch open the return lead because the return lead could function as the
ground (earth) connection for the equipment.
Protective Ground Connection
The enclosure must be grounded securely by connecting a copper wire (CSA 16mm2) to the grounding terminal
on the equipment/rack, and the other end to a protective ground (i.e. building earth point). An internationally
acceptable color code of the ground connection wire is green/yellow.
Such a ground connection implements the “Protective Ground Connection”, and must be connected to the
equipment at the designated ground point. In general, do not connect the supply before establishing an
adequate ground (earth) connection.
Construct the ground wire, and use appropriate crimp connectors where necessary. Locate and connect the
equipment grounding terminal to a protective ground (i.e. building earth point).
3.4.4 RF CABLE CONNECTION
Single band PS BDA RF cables connection is as follows:
PS BDA MT port Connects to the feeder cable from service antennas.
PS BDA DT port Connects to the feeder cable from donor antennas.
3.4.5 ETHERNET CONNECTION
Connect Ethernet with ‘LAN’ port in the panel, Ethernet type only.
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3.4.6 DRY CONTACT CABLE CONNECTION
Below please find the pin definitions of dry contact cables.
Table 3: Pin Definition of Dry Contact Cable
Pin NO.
Pin
Input
ALM1
1
CLOSE1
1
2
COM1
2
3
OPEN1
3
4
CLOSE2
4
5
COM2
5
6
OPEN2
6
7
CLOSE3
7
8
COM3
8
9
OPEN3
9
ALM2
1
CLOSE4
1
2
COM4
2
3
OPEN4
3
4
CLOSE5
4
5
COM5
5
6
OPEN5
6
7
CLOSE5
7
8
COM5
8
9
OPEN5
9
AUX
1
EXT ALM1
1
2
EXT ALM2
2
3
EXT ALM3
3
4
EXT ALM4
4
5
GND
5
6
GND
6
7
GND
7
8
GND
8
9
NC
9
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Dry contact status:
Main Power Normal/Lost dry contact status:
Pin definition of ALM and AUX connectors:
End of Section
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4 COMMISSIONING
4.1 PRE-COMMISSIONING TASKS
After equipment installation, perform the following steps before equipment powering and commissioning:
Verify that the expected voltage, current and power levels do not violate any ratings.
Visually inspect the power connection within the equipment. Ensure that the power cable is correctly and
securely connected, including the grounding wire, RF cable and other cables.
Check the grounding connection and verify that the ground resistance is less than 5Ω.
Test the antenna system and ensure that the echo loss within working frequency is less than -14dB
(VSWR<1.5).
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4.2 COMMISSIONING PROCEDURE
Perform the following procedures for system commissioning.
Start commissioning guide in WEB GUI
Sub Band Setting
RF Setting
End
Isolation Detection
Site Information Setting
Figure 7: Commissioning Procedure
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Table 4: Commissioning Task Explanation
Commissioning Tasks
Observation
1. Site Information Setting
Site ID, Dev ID, Dev Info, Longitude , Latitude, Date/time setting
2. Sub Band Setting
Sub Band Frequency setting.
3. Isolation detection
Detect isolation of service antenna and donor antenna.
4. RF Setting
DL_Target and the DL frequency center, the filter bandwidth setting
and the switch setting.
5. Recommended DL and UL
gain parameters
The commissioning guide will provide recommended DL/UL gain
settings.
Users will still need to set all the gains manually in the “Device” pages,
and the frequencies for all the independent channels in the same
“Device” pages after the commissioning process is finished.
End of Section
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5 WEB GUI
The PS BDA can be monitored and controlled via the WEB GUI; use the following guide to finish system
parameter setting and commissioning.
5.1 WEB GUI CONNECTION
Step 1: Connect the OMT port to the PC RJ45 port with the supplied RJ45 cable to set up a physical
connection.
Step 2: Open a browser (browser IE7.0, IE8.0, Chrome or Firefox, suggested display resolution is 1024×768),
input Web GUI IP address: 192.168.8.101, click [Enter].
NOTE:
DHCP and DNS are also available to login to the Web GUI. The domain name is: www.combaomt.com.
Advise to clear all the history record of Browse before connecting BDA every time.
Figure 8: Input IP Address
Figure 9: Input Domain Name
Step 3: Input User Name: admin; Password (default password: admin). Click [Log in].
Figure 10: Input User Name and Password
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5.2 WEB GUI INTRODUCTION
After log in, the Web GUI main screen will appear.
Figure 11: Web GUI Main Screen
On Comba Web GUI Home Screen, there are four Menu bars:
[Devices], [Commissioning], [Firmware] and [Management].
5.2.1 [DEVICES]
The [Devices] Screen shows the equipment status, such as PA status, alarm information, etc.
Overview Screen
Figure 12: Overview Screen
Shows the basic information
about the PS BDA
Indicates the
equipment status
Indicating
alarm status
Click to enable
/disable alarm
Indicating
alarm status
Click to enable
/disable alarm
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400MHz Screen-Class A
This screen is only available for 400MHz PS BDA Class A
Figure 13: 400MHz Screen 1
Figure 14: 400MHz Screen 2
400MHz Screen-Class B
Selecting
sub band
Frequency
information
RFparameters
Click to set
frequency
information, ,
enable/disable
RF switch.
Selecting
sub band
Click to set
bandwidth,
UL/DL ATT,
enable/disable
RF switch.
Sub band switch
status
Center frequency
of channel
Channel bandwidth
Sub band switch
status
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Figure 15: 400MHz Screen
5.2.2 [COMMISSIONING]
A work flow of the commissioning process is shown on [Commissioning] Screen. Click the [Start] button, the
software will guide you through the commissioning step by step. For details, please refer to chapter 5.3.
Figure 16: [Commissioning] Screen
5.2.3 [FIRMWARE]
There are two functions on the [Firmware] bar: [upgrade] and [swap]. [Upgrade] is used to upgrade software,
and [Swap] is to replace the current firmware version with the previous one.
Follow the steps shown below figure to upgrade the firmware.
Click to set Freq Low and
High, DL/UL Gain,
Enable/disable RF switch.
DL Freq Low
and High of
sub-bands
RF parameters
of sub-bands
Sub-bands
switch status
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Figure 17: [Firmware] Screen – MCU Firmware Upgrade
Figure 18: [Firmware] Screen – Firmware Swap
Figure 19: [Firmware] Screen – Module Update
Step 1: Click to select the
file for upgrading.
Step 2: Click to finish the
software upgrading.
Click to swap the firmware
to the previous version
Step 2: Click to
select the file.
Step 3: Click to finish
the upgrading.
Step 1: Check the
module that needs to be
updated.
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5.2.4 [MANAGEMENT]
Other parameters can be configured on the [Management] Screen.
Figure 20: [Management] Screen
Management menu, click
Enter to each page for
parameters setting.
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There are nine function bars list on the left side of the [Mangement] Screen.
Inport&Export
Figure 21: Management – Import & Export
The parameters that can be imported / exported include sub band, alarm enable, ATT value, RF switch, and DL
output power.
This function can help users quickly configure PS BDA parameters. For example, if one PS BDA is finished
configuration, users can export the parameters and save it as a file on the PC, and then import this file to other
PS BDAs for faster set up of additional PS BDAs.
Click to import/export the
configuration parameters.
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IP Setting
Figure 22: Management – IP Setting
Note: For remote monitoring, the IP Address must be set correctly based on the location IP of the remote
connection. If more than one piece of equipment is connected to the public network through the same router,
the router’s local IP CANNOT be set as 192.168.8.*.
Configure the IP
address for remote
monitoring.
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Comm. Setting
Figure 23: Management – Comm. Setting
Note: There are 4 available communication types: SMS, PS, SNMP and ETHERNET. You can choose a
suitable type for remote monitoring.
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Security
Figure 24: Management – Security
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Click , [Modify Password] window will pop-up.
Figure 25: Modify Password
Note: Username cannot be modified.
Device Reset
Figure 26: Management – Device Reset
Note: Click , all the parameters and alarms will be reset to factory default value. The Device Reset
process will last about 2~4 minutes. For PMU monitor reset, users need to re-login to the WEB GUI.
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Device Info
Figure 27: Management – Device Info
Note: Users can input a maximum of 30 characters in Device Info.
Isolation
Figure 28: Management – Isolation
Note: This Step is the same as step 5 of [Commissioning]. Users can check isolation again by clicking the
Check button, the detection range is from 65dB to 125dB.
Click here to get
PC time.
Input device
information.
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RF setting
Figure 29: Management – RF Setting
Alarm Setting
Figure 30: Management – Alarm Setting
Click to start
the alarm test.
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Report
Figure 31: Management – Report
Note: Click Create to create the report (the report can’t be created in IE browser) and make sure that PDF
Reader software is installed on the computer. If not, the report will not be visible.
The device basic information, an overview of RF information and sub-band RF information are included in this
report. Please refer to appendix D for an example of device report.
Alarm Log
Figure 32: Management – Alarm Log
Click to export alarm
log or clear alarm log
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Clear History Alarm
Figure 33: Management – Clear History Alarm
Click to clear history alarm
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5.3 COMMISSIONING PROCEDURE
To complete the installation and commissioning, users need to follow the steps below.
Step 1: Click the Menu bar [Commissioning] on home screen, a work flow will be displayed.
Figure 34: Commissioning Procedure – Start
Step 2: Click to start the process.
Figure 35: Commissioning Procedure – Site Info. Setting
Step 3: Click , to set the site information.
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Figure 36: Device Information Setting
It is mainly used to record device location and Date/Time provides a time reference. Clicking the Config Value
of Date/Time will update the Date/Time automatically.
Step 4 :
a. Click to enter to Sub Band Setting/Channel parameters setting-Class A
Figure 37: Device Sub Band Setting-Class A
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Figure 38: Channel parameters setting-Class A
Reminder:
Make sure the frequency of sub-bands match the actual frequency of filters, or BDA cannot work normally.
If the frequency is within [450MHz,470MHz], the bandwidth between DL Freq Low and DL Freq High can
be adjusted from 0.2 to 5MHz only. If the frequency is within[ 470,512], the bandwidth between DL Freq
Low and DL Freq High can be adjusted from 0.2-3MHz.
The frequency edges of two sub bands can be overlap, but they cannot be cross-contained.
The total channel quantity is 32CH within 4 sub-bands.
The channel center frequency must be within the frequency range of its relative sub-band, if it is not within
the range, the system will show a reminder window to show the setting unsuccessful.
If the sub band is off, all the channels belong to the sub band are auto set to off.
The procedure of sub band switch on: sub band 1 is first, and then 2, 3, 4. The procedure of sub band
switch off: sub band 4 is first, and then 3, 2, 1. And the isolation use sub band 1 to test, so make sure sub
band 1 is always on when BDA is working.
b. Click to enter to Sub Band Setting/Channel parameters setting-Class B
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Figure 39: Device sub-band setting-Class B
Reminder:
Make sure the frequency of sub-bands match the actual frequency of filters, or BDA cannot work normally.
If the frequency is within [450MHz,470MHz], the bandwidth between DL Freq Low and DL Freq High can
be adjusted from 0.2 to 5MHz only. If the frequency is within[ 470,512], the bandwidth between DL Freq
Low and DL Freq High can be adjusted from 0.2-3MHz.
The frequency edges of two sub bands can be overlap, but they cannot be cross-contained.
NOTE: Make sure the device is connected with appropriate donor and service antennas before
proceeding to step 5.
Step 5: Click to enter to Isolation Detection Screen.
Figure 40: Commissioning Procedure – Isolation Detection
Click to start Isolation Detecting, then a [Confirm] window will pop-up.
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Click to continue. If isolation detection passes, the process will go to Isolation Detection Finish
shown as Figure 43 If failed, a Tips window will pop-up, users need to check whether the system isolation
is adequate.
NOTE: At the end of the first frequency band commissioning, users can start other frequency band
commissioning.
Figure 41: Commissioning Procedure – Isolation Detection Confirm
Figure 42: Commissioning Procedure – Isolation Detection Failed
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Figure 43: Commissioning Procedure – Isolation Detection Finish
Step 6: RF Setting Screen for setting the center frequency.
Figure 44: Commissioning Procedure – Center Frequency Setting
Figure 45: Commissioning Procedure – Channel Number Setting
Step 1: Click to
open the
parameter setting
page.
Step 2: Input the
desired value.
Step 3: Click to
finish the setting.
Step 4: Click next to
continue RF setting.
Step 1: Click to
open the
parameter setting
page.
Step 2: Input the
desired value.
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Step 7: Click to finish the commissioning. In this window, a summary of device setting is shown.
Figure 46: Commissioning Procedure – Finish
End of Section
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6 MAINTENANCE
The PS BDA is designed for trouble-free operation and generally does not need maintenance. Maintenance
activities should only be carried out by trained personnel.
Periodic inspection of the repeater equipment(s) is recommended, the recommended tasks includes:
Verify the direction and position of antennas. Re-align if necessary.
Make sure the cable connector and sealing on the RF cable connectors are not damaged.
Verify lightning and grounding protection is in good condition.
End of Section
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7 APPENDICES
7.1 APPENDIX A:
Antenna installation:
Installation of an antenna must comply with the FCC RF exposure requirements. The antenna used for this
transmitter must be mounted on permanent structures.
The FCC regulations mandate that the ERP of type B signal boosters should not exceed 5W, this is equivalent
to 8.2W EIRP (39.1dBm).
Therefore the max antenna gain allowed for this type of signal booster should be limited to the values given by
equation 1 (below) for the service antenna.
For example:
No. of Antennas
Cable losses
Max Allowed Antenna Gain
4
3
39.1-(36-6-3)=12.1dBi
1
3
39.1-(36-0-3)=6.1dBi
10
3
39.1-(36-10-3)=15.1dBi
Compliance with FCC deployment rule regarding the radiation of noise
Good engineering practice must be used in regard to the signal booster’s noise radiation. Thus, the gain of the
signal booster should be set so that the ERP of the output noise from PS BDA should not exceed the level of
-43 dBm in 10 kHz measurement bandwidth.
In the event that the noise level measured exceeds the aforementioned value, the PS BDA gain should be
decreased accordingly.
In general, the ERP of noise on a spectrum more than 1 MHz outside of the pass band should not exceed -70
dBm in a 10 kHz measurement bandwidth.
RX-4122 PS BDA has a noise level of -21 dBm in 100 kHz (equals to -31dBm in 10kHz) measurement at 1 MHz
spectrum outside the pass band of BDA and an in-band noise level at around -50 dBm in a 10 kHz bandwidth.
Therefore, the noise at the antenna input port should be calculated based on equation (2).
For example: in band noise
RX-4122 PS BDA connected to 10 service antennas with a 100m long ½ inch cable.
Losses of such a cable with the connectors = ~ 12dB
Assuming 10 service antennas: antenna splitter losses = 11 dB
Based on equation (2) Input antenna noise (to the antenna) = – 51 – 12 – 0 –11=-74 dBm ERP
Equation (1) – Max Service antenna gain
Max Service antenna gain (dBi) = 39.1-(36dBm-# of antennas in dB – cable losses in dB).
Equation (2) – Input Noise to service antenna
Input Noise to service antenna:
-31dBm – antenna splitter losses in dB – out of band rejection of filters - cable loss in dB
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The in-band input noise to the antenna should be – 51 – 12 – 0 – 11= -63dBm ERP
For example: Out of band noise
RX-4122 PS BDA connected to 10 service antennas with a 100m long ½ inch cable.
Losses of such a cable with the connectors = ~ 12dB
Assuming 10 service antennas: antenna splitter losses = 11 dB
Out of band rejection of filters: more than 45dBc
Based on equation (3) Input antenna noise (to the antenna) = – 31 –12 – 45 – 11= – 99dBm ERP
The Out of-band input noise to the antenna should be – 31 –12 – 45 – 11= – 99dBm ERP
Conclusion:
Good engineering practice requires that in general when the out of band noise measured at the service
antenna input is more than -70 dBm per 10 kHz measurement bandwidth, an external band pass filter should
be added to attenuate the out of band noise level.
All Comba BDAs include high selectivity duplexers and filters to attenuate the out of band noise.
Compliance with FCC Part 90.219 (d)(6)(i)
The deployment rules require that the ERP of intermodulation products should in general not exceed -30dbm.
This is not a formidable task since in the vast majority of the passive DAS installations; the signal loss in the
DAS due to splitting to multiple antenna and cable losses is significant.
As well as the above RX-4122 PS BDA is more likely to be used in a multicarrier environment (more than 2
carriers), which in turn will reduce the intermodulation products produced by the device.
The following statement is already in the user manual to highlight the requirement to the installer for the
instances where the above does not reduce the ERP of the intermodulation products to -30dBm.
‘The installation procedure must result in RX-4122 PS BDA complying with FCC requirements 90.219(d). In
order to meet FCC requirements 90.219(d), it may be necessary for the installer to reduce the UL and/or DL
output power for certain installations.’
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7.2 APPENDIX B: TOOLS
The following are the recommended list of tools for new installation and routine maintenance.
Slotted Screwdriver
Philips Screwdriver
Ring Spanner (Assorted size: 12~20mm)
Electrically operated drill and masonry drill bits 12mm
Anti-static Wrist Strap
Side Cutter
Frequency Counter (e.g. FLUKE PM6685R)
RF Power Meter (e.g. Bird 5000)
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7.3 APPENDIX C: DECLARATION OF HARMFUL SUBSTANCES AND
CONTENT
Product Name: Public Safety BDA
Model: RX-4122
Harmful substance and content of this product as below table shown:
Part Name
Harmful Substance
Pb
Hg
Cd
Cr (VI)
PBB
PBDE
A
×
○
○
○
○
○
B
×
○
○
○
○
○
Note: Above table complies with SJ/T 11364.
○: Indicates that the harmful substance content in all homogeneous materials for corresponding part is under the limited
requirement of GB/T 26572.
×: Indicates that the harmful substance content in at least one single homogeneous material for the corresponding part exceeds the
limited requirement of GB/T 26572.
Remark: The content of the parts marked with “×”above exceeds the requirement as there is still no mature alternative
technologies to achieve the replacement of poisonous and harmful materials or elements.
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7.4 APPENDIX D: RMA (RETURN MATERIAL AUTHORIZATION)
End of Section
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