Comba Telecom RX-4122 Operation & User’s Manual

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 ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 2 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herein is the responsibility of and is approved by the following, to whom all enquiries should be directed: This is an unpublished work the copyright in which vests in Comba International ("Comba").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 om ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 3 0.1 CONTENTS Section Page 0.1 CONTENTS ................................................................................................................................. 3 0.2 INDEX TO FIGURES AND TABLES ......................................................................................... 5 0.3 HISTORY ................................................................ ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 4 7.3 APPENDIX C: DECLARATION OF HARMFUL SUBSTANCES AND CONTENT ............... 52 7.4 APPENDIX D: RMA (RETURN MATERIAL AUTHORIZATION) ........................................... 53 ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 5 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 ..................................... ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 6 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 . ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 7 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 ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 8 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, aut ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 9 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 Featur ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 10 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 Functi ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 11 2.2 EQUIPMENT LAYOUT Shown below is the internal layout of the PS BDA. 黑色开关 MT DT 避雷器 DL Filter UL Filter DL Filter UL 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 Filter UL Filter PSU Distribution Board MCU + ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 12 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 commu ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 13 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 eq ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 14 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 weat ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 15 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 connecto ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 16 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 responsib ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 17 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, F ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 18 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 ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 19 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 ...

ENU STATUS : 1-0-1 Copyright - refer to title page Page 20 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 G ...