RX14V3-A Digital Band Selective Repeater
“
Product Information
Specifications
- Product Name: CriticalPoint Public Safety BDA Digital Band
Selective Repeater - Frequency: Public safety 150/450MHz
- Manufacturer: Comba Telecom Network Systems Ltd.
- Model: VHF/UHF Dual Band BDA
Product Usage Instructions
1. General Information
Read the user manual carefully before proceeding with the
installation and operation of the BDA.
2. Equipment Description
The BDA consists of various components including a functional
block diagram for reference, equipment layout, and
constitution.
3. Commissioning
Before commissioning, ensure all pre-commissioning tasks are
completed. Follow the detailed commissioning procedure provided in
the manual.
4. Web GUI
Access the BDA’s Web GUI for configuration and monitoring
purposes. Connect to the Web GUI as instructed and familiarize
yourself with its features.
5. Maintenance
Regular maintenance is essential for optimal performance of the
BDA. Refer to the maintenance section in the manual for guidance on
upkeep.
FAQ
Q: How do I access the Web GUI?
A: To access the Web GUI, ensure your device is connected to the
same network as the BDA. Open a web browser and enter the IP
address of the BDA in the address bar.
Q: What should I do if I encounter errors during
commissioning?
A: If you encounter errors during commissioning, refer to the
troubleshooting section in the manual for possible solutions.
Ensure all connections are secure and follow the steps
carefully.
“`
CriticalPoint Public Safety BDA
DIGITAL BAND
SELECTIVE REPEATER
USER MANUAL
Public safety 150/450MHz BDA QE: 1-0-0
USER MANUAL
VHF/UHF Dual Band BDA QE: 1-0-0
Comba Telecom Network Systems Ltd.
INSTALLATION GUIDE FOR UHF+VHF BDA
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This is an unpublished work the copyright in which vests in Comba International (“Comba”).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.
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INSTALLATION GUIDE FOR UHF+VHF BDA
0.1 CONTENTS
Section
Page
0.1
CONTENTS …………………………………………………………………………………………………………… 4
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 ……………………………………………………………………………………. 10
2
EQUIPMENT DESCRIPTION…………………………………………………………………………………. 12
2.1
FUNCTIONAL BLOCK DIAGRAM…………………………………………………………………………… 12
2.2
EQUIPMENT LAYOUT ………………………………………………………………………………………….. 13
2.3
EQUIPMENT CONSTITUTION ………………………………………………………………………………. 14
3 3.1 3.2 3.2.1 3.2.2 3.3 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.4 3.4.1 3.4.2 3.4.3 3.4.4 3.4.5 3.4.6
INSTALLATION ……………………………………………………………………………………………………. 15 WARNINGS AND ALERTS ……………………………………………………………………………………. 15 SITE PLANNING CONSIDERATIONS…………………………………………………………………….. 16 SITE PLANNING ………………………………………………………………………………………………….. 16 INSTALLATION CHECKLIST …………………………………………………………………………………. 17 INSTALLATION PROCEDURES…………………………………………………………………………….. 18 GOODS INWARDS INSPECTION ………………………………………………………………………….. 18 TOOLS………………………………………………………………………………………………………………… 18 PREPARATION ……………………………………………………………………………………………………. 18 WALL MOUNTING ……………………………………………………………………………………………….. 19 DRIP-LOOP …………………………………………………………………………………………………………. 19 EQUIPMENT CONNECTORS………………………………………………………………………………… 20 PS BDA CONNECTORS ……………………………………………………………………………………….. 20 PS BDA LED INDICATORS …………………………………………………………………………………… 21 GROUNDING CONNECTION ………………………………………………………………………………… 22 RF CABLE CONNECTION …………………………………………………………………………………….. 22 ETHERNET CONNECTION …………………………………………………………………………………… 22 DRY CONTACT CABLE CONNECTION………………………………………………………………….. 23
4
COMMISSIONING………………………………………………………………………………………………… 24
4.1
PRE-COMMISSIONING TASKS …………………………………………………………………………….. 24
4.2
COMMISSIONING PROCEDURE…………………………………………………………………………… 25
5
WEB GUI …………………………………………………………………………………………………………….. 27
5.1
WEB GUI CONNECTION ………………………………………………………………………………………. 27
5.2
WEB GUI INTRODUCTION …………………………………………………………………………………… 28
6
MAINTENANCE……………………………………………………………………………………………………. 30
7
APPENDICES………………………………………………………………………………………………………. 31
7.1
APPENDIX A: TOOLS …………………………………………………………………………………………… 31
7.2
APPENDIX B: DECLARATION OF HARMFUL SUBSTANCES AND CONTENT ………….. 32
7.3
APPENDIX C: TROUBLESHOOTING QUICK GUIDE……………………………………………….. 33
7.4
APPENDIX D: DEVICE REPORT EXAMPLE …………………………………………………………… 35
7.5
APPENDIX E: RMA (RETURN MATERIAL AUTHORIZATION) ………………………………….. 36
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INSTALLATION GUIDE FOR UHF+VHF BDA
0.2 INDEX TO FIGURES AND TABLES
Figure 1: Front, Side and Bottom Views of the PS BDA Enclosure……………………………………………………….. 10 Figure 2: PS BDA Functional Block Diagram……………………………………………………………………………………… 12 Figure 3: Layout of the PS BDA ……………………………………………………………………………………………………….. 13 Figure 4: Mounting Rack Overview …………………………………………………………………………………………………… 18 Figure 5: PS BDA Wall Mounting ……………………………………………………………………………………………………… 19 Figure 6: Equipment Connectors ……………………………………………………………………………………………………… 20 Figure 7: LED Indicators …………………………………………………………………………………………………………………. 21 Figure 8: Commissioning Procedure…………………………………………………………………………………………………. 25 Figure 9: Input IP Address ………………………………………………………………………………………………………………. 27 Figure 10: Input Domain Name ………………………………………………………………………………………………………… 27 Figure 11: Input User Name and Password ……………………………………………………………………………………….. 27 Figure 12: Web GUI Main Screen …………………………………………………………………………………………………….. 28 Figure 13: Carrier Mode ………………………………………………………………………………………………………………….. 28 Figure 14: Parameters setting………………………………………………………………………………………………………….. 29 Figure 15: Alarm list ……………………………………………………………………………………………………………………….. 33 Figure 16: Reset PA……………………………………………………………………………………………………………………….. 34
Table 1: Equipment Connectors ………………………………………………………………………………………………………. 20 Table 2: LED Indicators…………………………………………………………………………………………………………………… 21 Table 3: Pin Definition of Dry Contact Cable ……………………………………………………………………………………… 23 Table 4: Commissioning Task Explanation………………………………………………………………………………………… 26
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INSTALLATION GUIDE FOR UHF+VHF BDA
0.3 HISTORY
Change No. 1
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Details Of Change This manual first created and issued in Oct,2024
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INSTALLATION GUIDE FOR UHF+VHF BDA
0.4 GLOSSARY OF TERMS
Abbreviation ALC ATT BTS CH CSA dB dBm DL DT DPX FS Hz ID IF LNA LOS MCU MHz MT MTBF NF OMC OMT PA PLL PSU RF SMA UL VAC VDC VSWR
Definition Automatic Level Control Attenuator Base Transceiver Station Channel Cross Sectional Area Decibel Decibels relative to 1 milliwatt Downlink Donor Terminal Duplexer Frequency Selection Hertz Identification Intermediate Frequency Low Noise Amplifier Line-of-Sight Main Control Unit Megahertz Mobile Terminal Mean Time Between Failures Noise Figure Operation & Maintenance Center Operation & Maintenance Terminal Power Amplifier Phase Locked Loop Power Supply Unit Radio Frequency Sub-Miniature A Connector Uplink Volts Alternating Current Volts Direct Current Voltage Standing Wave Ratio
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INSTALLATION GUIDE FOR UHF+VHF BDA
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 during normal operation and must not be colocated 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.
This is a part 90.219 class A device
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.
For compliant with the FCC uncontrolled exposure requirement, the maximum permissin gantenna gain is 0dBi, the permitted use distance away from device external antenna shall larger than 0.8 m for downlink and 0.6m for uplink.
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
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user to fine.
INSTALLATION GUIDE FOR UHF+VHF BDA
Ambient temperature range for equipment use: -33 to 55 degrees Celsius.
This equipment is not suitable for use in locations where children are likely to be present.
The product shall connection of the equipment protective earthing conductor to the installation protective earthing conductor (for example, by means of a power cord connected to a socket-outlet with earthing connection).
When the plug on the power supply cord is used as the disconnect device, the socket-outlet shall be easily accessible.
End of Section
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INSTALLATION GUIDE FOR UHF+VHF BDA
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INSTALLATION GUIDE FOR UHF+VHF BDA
1 GENERAL INFORMATION
The Public Safety Critical Point NG VHF/UHF BDA is a new digital dual band public safety 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 Public Safety Critical Point NG VHF/UHF BDA helps eliminate adjacent channel interference to allow band selectivity and support UHF and VHF rebanding. Up to two non-contiguous frequency bands can be simultaneously supported in each of the UHF and VHF Public Safety frequencies via a web-based GUI, which provides versatility and total control to the user.
Main Features
· Support s P25 P1/ P2, digit al and convent ional analog com m unicat ions sim ult aneously · Built-in cavity filtering to protect the unit from interference · Up t o 64 narrow band filt ers share by VHF and UHF band ( Class A) · Channelized Aut o Level Cont rol ( ALC) support ed ( Class A) · Channelized uplink squelch support ed ( Class A) · Uplink PA shut down during no t raffic periods to m inim ize noise
being int roduced to t he net work ( Class A) · Built – in m andat ory isolat ion t est t o prevent BDA oscillat ion · Auto shutdown with alarm upon oscillation detection · Web based GUI for int elligent configurat ion, SNMP support ed · I nt egrat ed Bat t ery Charger Unit , Com ba BBU V3 support ed · NFPA / I FC / UL 2524 com pliant dry cont act alarm s, wit h LED displays · Ext ernal Com ba Annunciat or Panel support ed
The following figure shows the enclosure of the PS BDA.
Figure 1: Front, Side and Bottom Views of the PS BDA Enclosure
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INSTALLATION GUIDE FOR UHF+VHF BDA
BDA
Passband ( Dow nlink / Uplink )
Tot al Out put Pow er, Uplink Tot al Out put Pow er, Dow nlink Maxim um Syst em Gain Gain Adj ust m ent Range ( 1dB st ep) Pass Band Ripple, p- p ( Uplink / Dow nlink) Uplink Noise Figure I ntermodulation Sp u r iou s Maxim um RF I nput Level w it hout Dam age Maxim um RF I nput Level w it hout Ov er d r iv e Maxim um RF I nput Level w it hout AGC without filter I nput VSWR I m pedance
MHz
dBm dBm dB dB dB dB dBm dBm dBm dBm dBm
1 5 0 MHz ( VHF)
150.05-173.4
30 30 95 30
3 <5 FCC Com pliance FCC Com pliance 0 -10 -65 2 50
4 5 0 MHz ( UHF) 406.1-420 421-430 450-512 33 36 95 30
FCC Com pliance FCC Com pliance
0 -10 -62 2 50
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INSTALLATION GUIDE FOR UHF+VHF BDA
2 EQUIPMENT DESCRIPTION
2.1 FUNCTIONAL BLOCK DIAGRAM
DT1/DL IN1 DT2/DL IN2
UL OUT1
INPUT=-59dBm INPUT=-65dBm OUTPUT=33dBm
UL OUT2
OUTPUT=30dBm
LNA LNA
LNA LNA
PA
ADC ADC DAC DAC
FPGA
DAC DAC
ADC ADC
AMP AMP
AMP
AMP
DPA_1 DPA_2 LNA LNA
LNA LNA
Transceiver
PA
Transceiver
OUTPUT=36dBm OUTPUT=30dBm
INPUT=-62dBm INPUT=-65dBm
MT/DL OUT1 MT/DL OUT2 UL IN1 UL IN2
AC INPUT BATT INPUT
PSU
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 duplexer, the signals are sent to 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 the duplexer. After amplification, 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 MT port integrated duplexer, the signals are sent to the LNA, integrated module for digital filtering, then to the PA for power amplification and to the duplexer. After that, the uplink signals are sent to the donor antenna for transmission back to the BTS.
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INSTALLATION GUIDE FOR UHF+VHF BDA
2.2 EQUIPMENT LAYOUT
Shown below is the internal layout of the PS BDA.
Figure 3: Layout of the PS BDA
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INSTALLATION GUIDE FOR UHF+VHF BDA
2.3 EQUIPMENT CONSTITUTION
The typical PS BDA unit consists of the following components:
Master Digital Board and Slave Digital Board: 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.
UHF+VHF Digital Integrated Module and Power Amplifier: Consists of the Power Conversion module, RF module, digital process module and monitoring modules. The Power Conversion module converts +28V DC voltage into +9VJK and +9VRF. +9VJK, +9VRF are supplied to the monitoring unit, and the RF unit in the integrated module separately. 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 is the interface for both remote monitoring and local commissioning.
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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INSTALLATION GUIDE FOR UHF+VHF BDA
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 ESDsensitive devices. Transport, store, and handle ESD-sensitive devices in static-safe environments.
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INSTALLATION GUIDE FOR UHF+VHF BDA
3.2 SITE PLANNING CONSIDERATIONS 3.2.1 SITE PLANNING
Site Considerations Outdoor equipment is 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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INSTALLATION GUIDE FOR UHF+VHF BDA
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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INSTALLATION GUIDE FOR UHF+VHF BDA
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
n
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Figure 4: Mounting Rack Overview
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INSTALLATION GUIDE FOR UHF+VHF BDA
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.
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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INSTALLATION GUIDE FOR UHF+VHF BDA
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.
Identifier Knock Out DT1/DL IN1 DT2/DL IN2 UL OUT1 UL OUT2 MT1/DL OUT1
Figure 6: Equipment Connectors
Table 1: Equipment Connectors Descriptions 3/4”: For Hybrid cable (include AC cable and monitor cable from BBU) 1”: Reserved. 1/2”: For Dry contactors or External alarm cables Duplex input/Simplex DL input: Donor antenna or Downlink input port
Duplex input/Simplex DL input: Donor antenna or Downlink input port
Simplex UL output: Uplink output port
Simplex UL output: Uplink output port
Duplex output/Simplex DL output: Service antenna or Downlink output port
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INSTALLATION GUIDE FOR UHF+VHF BDA
MT2/DL OUT2 UL IN1 UL IN2 AUX 1~8 AUX/CW FOU DL FOU UL OMT LAN
Duplex output/Simplex DL output: Service antenna or Downlink output port Simplex UL output: Uplink input port Simplex UL output: Uplink input port Reserved Reserved Reserved for DAS system Reserved for DAS system RJ45 Connector for local WEB GUI connection. RJ45 Connector for internet connection. Ground terminal
3.4.2 PS BDA LED INDICATORS
The LED indicators help user to check the equipment status easily.
Identifier Normal AC Power Loss of Normal AC Power Battery Charger Failure
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Figure 7: LED Indicators Table 2: LED Indicators
Descriptions Alarm: OFF Normal: ON(Green) Alarm: ON(Red) Normal: OFF Alarm: ON(Red) Normal: OFF
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INSTALLATION GUIDE FOR UHF+VHF BDA
Battery Low VHF Donor Antenna Fail UHF Donor Antenna Fail VHF RF Emitter Fail UHF RF Emitter Fail System Component Fail Oscillation
Alarm: ON(Red) Normal: OFF
Alarm: ON(Red) Normal: OFF
Alarm: ON(Red) Normal: OFF
Alarm: ON(Red) Normal: OFF
Alarm: ON(Red) Normal: OFF
Alarm: ON(Red) Normal: OFF
Alarm: ON(Red) Normal: OFF
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
PS BDA RF cables connection is as follows:
PS BDA MT/DL OUT1 and MT/DL OUT2 port Connects to the feeder cable from service antennas. PS BDA DT1/DL IN1 and DT2/IN2 port Connects to the feeder cable from donor antennas.
3.4.5 ETHERNET CONNECTION
Connect Ethernet with `LAN’ port in the panel.
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INSTALLATION GUIDE FOR UHF+VHF BDA
3.4.6 DRY CONTACT CABLE CONNECTION
Below please find the pin definitions of dry contact cables.
Pin NO.
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
Table 3: Pin Definition of Dry Contact Cable
Pin
CLOSE1 COM1 OPEN1
CLOSE2 COM2 OPEN2 RR_A RR_B NC GND
CLOSE3 COM3 OPEN3
CLOSE4 COM4 OPEN4 GND NC NC NC
EXT ALM0 EXT ALM1 EXT ALM2 EXT ALM3
EXT Li+ EXT Li+
NC GND EXT LiEXT Li-
ALM1 ALM2 AUX
Input
1(A) 2(B) 3(C) 4(D) 5(E) 6(F) 7(G) 8(H) 9(J) 10(K)
1(A) 2(B) 3(C) 4(D) 5(E) 6(F) 7(G) 8(H) 9(J) 10(K)
1(A) 2(B) 3(C) 4(D) 5(E) 6(F) 7(G) 8(H) 9(J) 10(K)
End of Section
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Output
Red White Blue Black Brown Purple Green Orange Yellow Grey
Red White Blue Black Brown Purple Green Orange Yellow Grey
Red White Blue Black Brown Purple Green Orange Yellow Grey
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INSTALLATION GUIDE FOR UHF+VHF BDA
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 5. Test the antenna system and ensure that the echo loss within working frequency is less than -14dB
(VSWR<1.5).
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INSTALLATION GUIDE FOR UHF+VHF BDA
4.2 COMMISSIONING PROCEDURE
Perform the following procedures for system commissioning.
Start commissioning guide in WEB GUI
Set unit parameters Isolation detection Set Control channel frequency Input power detection from control channel Set channel total numbers Get the recommended DL and UL parameters Set frequency and gain for each channel in `Device’ page, and turn on RF switches Fine tuning DL/UL gains for channels
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End
Figure 8: Commissioning Procedure
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Table 4: Commissioning Task Explanation
Commissioning Tasks
Observation
1. Isolation detection
2. Set control channel
frequencies
3. Set Channel No.
4. Recommended DL and UL gain parameters
Detect isolation of service antenna and donor antenna.
Enter the center frequency of the main control channel, the commissioning guide will provide recommended DL/UL gain settings based on main control channel input power and the total channel numbers. Users can skip this step and directly finish the commissioning guide even if the frequency information or the total channel numbers are unknown. Users can set the DL/UL gain manually any time after the isolation detection has been completed and passed.
Enter the total channel numbers
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.
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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.
Figure 9: Input IP Address
Figure 10: Input Domain Name Step 3: Input User Name: admin; Password (default password: admin). Click [Log in].
Figure 11: 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 12: Web GUI Main Screen 1, First, confirm if the carrier mode is correct. See carrier mode (Class A or Class B), as shown in Figure 13.
Figure 13: Carrier Mode
2, and then confirm whether the RF switch is turned on and whether the device parameter settings are in line with the usage scenario, as shown in Figure 14.
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Figure 14: Parameters setting 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.
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7 APPENDICES
7.1 APPENDIX A: 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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7.2 APPENDIX B: DECLARATION OF HARMFUL SUBSTANCES AND CONTENT
Harmful substance and content of this product as below table shown:
Part Name Pb
A
×
Harmful Substance
Hg
Cd
Cr (VI)
PBB
PBDE
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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7.3 APPENDIX C: TROUBLESHOOTING QUICK GUIDE
Alarm list:
Signal Booster Failure Dry contact alarm
Over Temperature alarm PLL alarm
Low Input alarm VSWR alarm
Antenna Malfunction Dry contact alarm
LNA alarm
DL PA alarm
Shutdown alarm
Troubleshooting: Alarms
Low input (for DT port)
VSWR Over temperature PLL (Phase lock loop)
LNA (Low noise amp.)
DL PA (Downlink amp.)
Shutdown
High input (for DT port)
High input alarm
Figure 15: Alarm list
Causes and actions
DT composite input power lower than -80dBm will trigger the alarm 1. Donor antenna/passive system failure 2. Wrong channel frequency setting 3. Site is not commissioned yet
Service antenna/passive system failure
Environment temperature shall be lower than 140degF (60degC)
Hardware failure, RMA the equipment
Hardware failure, RMA the equipment 1. Handling RF connectors when RF power is ON may damage LNA 2. High power injection to DT/MT port may damage LNA
Fix any other existing alarms first, then reset PA (see next page) If alarm still exists, RMA the equipment
Other critical alarm causes the equipment shutdown Follow instructions to fix other alarms first Check input power to DT port, the power shall be lower than -30dBm 1. Avoid other inference 2. Put attenuator between antenna and PS BDA, if donor signal is high
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Reset PA: The Downlink PA will try to automatically reboot during the first 2 hours after alarms occur and then may shutdown permanently if alarms still exist. Users need to manually reset the PA in WEBOMT after fixing the alarm.
Go to Management -> Device Reset: Click the Reset button at the lower table to reset DL PA for UHF or VHF band.
Power detection:
Figure 16: Reset PA
The power detection can be done from the reading number in WEBOMT, available in: Downlink input power (per channel) Downlink output power (composite) Uplink input power (per channel)
Or from the test ports for DT/MT, which are 27dB lower than the DT/MT port respectively, the test ports are able to detect both DL and UL signals
Isolation:
The system doesn’t allow users to set a gain higher than isolation-20dB. The PS BDA has a mandatory process to check the isolation during commissioning, when isolation is not good (lower than 120dB, even though the PS BDA passes the commissioning process), a check on isolation (between donor and service antennas) is always recommended.
The maximum system gain that can be set must be 20dB lower than the isolation. (For example, if the isolation is 110dB, then the maximum gain that can be set is 90dB.) The PS BDA has an automatic process that prevents the gain being set to a value that does not follow this parameter.
If this gain is insufficient, then the isolation situation must be corrected to provide a higher isolation value.
Safety operation to protect the LNA (low noise amplifier):
1. Connect RF cables before powering on. 2. Any changes or handling of the RF connection requires user to switch off RF power (RF switch off in
WEBOMT) or power off the unit first.
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7.4 APPENDIX D: DEVICE REPORT EXAMPLE
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7.5 APPENDIX E: RMA (RETURN MATERIAL AUTHORIZATION)
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Comba
Camba Telecom Inc.
568 Gibraltar Drive, Milpitas, CA 95035 Tel: +1 866 802 7961 Fax: +1 408 526 0181 Email: customer.n am@comba-telecom.com
www.combaus a.com
Documents / Resources
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