Comba Telecom RX-4122 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
ENU STATUS : 1-0-1
Copyright - refer to title page
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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This is an unpublished work the copyright in which vests in Comba International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
1GENERAL INFORMATION........................................................................................................9
2EQUIPMENT DESCRIPTION..................................................................................................10
2.1 FUNCTIONAL BLOCK DIAGRAM...........................................................................................10
2.2 EQUIPMENT LAYOUT.............................................................................................................11
2.3 EQUIPMENT CONSTITUTION................................................................................................12
3INSTALLATION.........................................................................................................................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
4COMMISSIONING....................................................................................................................23
4.1 PRE-COMMISSIONING TASKS..............................................................................................23
4.2 COMMISSIONING PROCEDURE...........................................................................................24
5WEB 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
6MAINTENANCE........................................................................................................................48
7APPENDICES...........................................................................................................................49
7.1 APPENDIX A:............................................................................................................................49
7.2 APPENDIX B: TOOLS..............................................................................................................51

INSTALLATION GUIDE FOR RX-4122
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7.3 APPENDIX C: DECLARATION OF HARMFUL SUBSTANCES AND CONTENT...............52
7.4 APPENDIX D: RMA (RETURN MATERIAL AUTHORIZATION)...........................................53

INSTALLATION GUIDE FOR RX-4122
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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 standardsfor the country concerned, the equivalent territorial admonishmentsare 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 noticesin 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 hazardsthat may cause damage to the equipment. Anexample
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 tothe equipment but where there is a possibility of seriously impairingits performance, e.g.by
mishandling or gross maladjustment.Warnings and Cautions within the main text do notincorporate 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

INSTALLATION GUIDE FOR RX-4122
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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 bythe donor antenna of therepeater.Afterthe 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 uplinkfilter, the circulator, after that, the uplink signals are sent to the donor antennafor
transmission back to the BTS.