Document Name: mBSC0850i-040-RUC11, mBSC0850i-040-RUC12, mBSC0850i-020-RUC11, mBSC0850i-020-RUC12 Revision: 001.
mBSC-C 6185 Phyllis Drive Cypress, CA 90630 USA PH: 714.230.8333 RU Visit our Website at www.BTIwireless.com Copyright © 2016 BTI Wireless All rights reserved. No part of this publication may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission from BTI Wireless.
mBSC-C RU Document History Paper copies are valid only on the day they are printed. Contact the author if you are in any doubt about the accuracy of this document. Revision History Revision Number 001.00A Revision Date 5/28/2013 Summary of Changes Initial Release for NA GENERAL SAFETY PRECAUTIONS Warning: Wet conditions increase the potential for receiving an electrical shock when installing or using electrically-powered equipment.
mBSC-C RU TABLE OF CONTENTS 1 INTRODUCTION 1.1 SYSTEM SOLUTION BLOCK DIAGRAM 1 1 1.1.1 Host Unit 1 1.1.2 Remote Node 2 2 SAFETY 3 3 SYSTEM OVERVIEW AND UNIT DESCRIPTION 4 3.1 4 3.1.1 Interface with BTS 5 3.1.2 Interface with Cellular Phones 5 3.1.3 Fiber Optic Transport 5 3.1.4 Powering 5 3.1.5 Cooling 5 3.1.6 Fault Detection and Alarm Reporting 5 3.2 HOST UNIT DESCRIPTION 6 3.2.1 Host Unit Components 6 3.2.2 Mounting 9 3.2.
mBSC-C 4.2.6 4.3 26 Rack Mounting 26 4.3.2 Cable Connections 28 4.4.1 4.5 REMOTE NODE INSTALLATION Cable Connections INSTALLATION FINAL INSPECTION 32 33 37 4.5.1 Host Unit Connection Overview 38 4.5.2 Remote Node Connection Overview 39 4.5.3 mBSC-C Inspection Checklist 40 4.5.4 Cabling Inspection 40 4.6 SYSTEM TEST SYSTEM MONITORING &CONFIGURATION 5.1 ACCESSING EMS LOCAL GUI 40 42 42 5.1.1 Using Ethernet Port 42 5.1.2 Using USB Port 43 5.1.3 Login to EMS Local GUI 44 5.
mBSC-C 7 RU 6.1 ELECTROSTATIC DISCHARGE PRECAUTIONS 66 6.2 PREVENTATIVE MAINTENANCE 66 6.3 FAULT DETECTION AND ALARM REPORTING 66 6.4 TROUBLESHOOTING QUICK GUIDE 67 6.4.1 Host Unit Trouble Shooting 68 6.4.2 Remote Unit Trouble Shooting 69 TERMS, ACRONYMS & ABBREVIATIONS ©1999-2013 Bravo Tech Inc.
mBSC-C RU LIST OF FIGURES FIGURE 1BLOCK DIAGRAM OF HOST UNIT ................................................................................................................................. 1 FIGURE 2 BLOCK DIAGRAM OF REMOTE NODE .......................................................................................................................... 2 FIGURE 3MBSC SYSTEM FUNCTIONAL OVERVIEW ..................................................................................................................
mBSC-C RU FIGURE 41 REMOTE NODE INTER-CONNECTION DIAGRAM ...................................................................................................... 39 FIGURE 42 FLOW CHART OF SYSTEM DEBUGGING ................................................................................................................... 41 FIGURE 43– EMS LOCAL GUI LOGIN.......................................................................................................................................
mBSC-C RU LIST OF TABLES TABLE 1 HOST UNIT USER INTERFACE...................................................................................................................................... 10 TABLE 2HOST UNIT INDICATOR DESCRIPTION .......................................................................................................................... 12 TABLE 6BCM ENCLOSURE USER INTERFACE ..................................................................................................................
mBSC-C RU 1 Introduction The MBSC-C Fiber Optic Coverage System is used to extend wireless coverage to specific areas in building(s), or throughout a complex zone. The mBSC product family offers a flexible, scalable, modular platform to improve signal quality and enhance the services to meet the increasing demands. The MBSC-C system components include a Host Unit (HU) and a Remote Node. Each Host Unit can feed up to eight multi-band Remote Nodes, each utilizing a single fiber.
mBSC-C RU 1.1.2 Remote Node BCM RTM RUM Tx_0.7 Rx_0.7 0.7~2.6G O/E Tx/Rx RUM Tx_0.7~2.6G Tx_0.8 Rx_0.8 Rx_0.7~2.6G 700MHz UNIT 850MHz UNIT Tx/Rx Tx/Rx Tx/Rx Tx/Rx RUM Tx_1.9 Rx_1.9 1900MHz UNIT Tx/Rx RUM Tx_2.1 Rx_2.1 2100MHz UNIT RUM Control Unit #1 Tx_2.6 Rx_2.
mBSC-C RU 2 Safety Caution All the following “Safety Precautions” must be observed during the entire installation and operation of the mBSC system. 1. The mBSC system is designed for maximum safety and reliability when installed, used, and maintained by trained and qualified technicians in accordance with the procedures and instructions contained in this manual. To assure the safe operation of your system, always follow the safety and operational recommendations in this manual. 2.
mBSC-C RU 3 System Overview and Unit Description 3.1 System Overview The MBSC-C system is a multi-operator, multi-band and multi-technology coverage system that provides in-building / venue coverage for up to five operating bands. Large buildings typically interfere with the transmission or reception of cellular phone system signals by imposing high attenuation losses on the RF signal.
mBSC-C RU 3.1.1 Interface with BTS The Host Unit is typically installed close to the wireless service provider BTS equipment. In the downlink path the Host Unit combines RF signals from up to 5bands and feeds the combined signal to a fiber-optic transceiver for transmission to the interconnected Remote Node(s).In the uplink path the Host Unit converts a composite multi-band optical signal into independent RF signals for interconnection with the BTS receive elements. 3.1.
mBSC-C 3.2 RU Host Unit Description As shown in Figure 4, the Host Unit is a standard 19”4U rack-mounted shelf, which serves as the BTS servicing unit for the mBSC system.
mBSC-C RU to the BTS receivers. Internal splitters, combiners, and software controlled attenuators enable customized designs to support various RF inputs scenarios. BIU Opreate Tx1 OUT Tx700 Tx2 OUT Tx850 Tx3 Tx1900 OUT Tx2100 Tx4 OUT Tx2600 Rx1 IN Rx700 Rx2 Rx850 IN Rx3 Rx1900 IN Rx2100 Rx4 IN Rx2600 Figure 5BIU 3.2.1.2 FIU (Fiber Interface Unit) The FIU provides the interface between the combined RF signals (BIU) and the optical fiber connections.
mBSC-C 3.2.1.3 RU PSU (Power Supply Unit) The Host Unit is powered by -48V DC. The PSU takes the -48 VDC input source power and provides voltage conversion and distribution for the line cards installed within the host unit shelf. The host unit is equipped with 2 independent PSU’s in parallel redundancy. Each PSU is hot swappable (one unit at a time only). PSU 1 0 Figure 7 PSU 3.2.1.
mBSC-C RU RCU Opreate Modem USB RS232 RJ45 Figure 8RCU 3.2.2 Mounting The Host Unit is intended for use in indoor, rack-mounted applications. For rack mounting, a pair of mounting brackets is provided that allows the Host Unit to be mounted in a 19” equipment rack. When rack-mounted, the front panel of the Host Unit is flush with the front of the rack. 3.2.3 Fault Detection and Alarm Reporting The Host Unit detects internal circuitry faults and optical port faults.
mBSC-C RU 3.2.6 Powering The Host Unit is powered by -48V DC through a DC power terminal block on the rear. An ON/OFF switch is provided at the PSU front panel. The switch applies power to the Host Unit internal power supply, which distributes the operating voltages to lines cards installed in the Host Unit shelf. 3.2.7 Host Unit Interface The Host Unit interface consists of the various connectors, switches, terminals and LED indicators that are provided on the front and rear panel.
mBSC-C 4 User Interface Designation Power Input Screw-type terminal block -48VDC power input 5 POI FAN (optional) Screw type terminal +12VDC for external power connection 6 NETWORK RJ45 jack (female) Optional Ethernet connection # Device Functional Description Composite RF Rx Connector (1~2) Composite RF Tx Connector (1~2) RF Tx Connector (700~2600MHz) 5-band RF Tx Connector (1~4) Serial Port FIU FIU BIU Opreate Opreate Tx1 RCU TX2 TX2 TX1 OUT Tx700 OUT Tx850 Tx3 Tx1900
mBSC-C RU Table 2Host Unit Indicator Description # Indicator 1 RUN 3.3 Status Description Green(Flashing) Normal system operation Red(Flashing) System fault detected Remote Node Description The Remote Node serves as the remote interface unit for the fiber optic mBSC system.
mBSC-C RU Figure 10Fiber BCM Enclosure Outline 3.3.1.1 Primary Components The fiber BCM enclosure interior layout, shown in Figure 11, is equipped to interface up to five bands (700MHz, 850MHz, 1900MHz, 2100MHz and 2600MHz).
mBSC-C 3.3.1.2 RU Multiplexer The multiplexer separates the various band frequencies respectively. The duplexer is used to make the bi-directional signals into simplex signals and provides sufficient isolation. 3.3.1.3 Mounting The BCM enclosure is installing on the 19’’ rack. 3.3.1.4 RF Connection The RF signal connections with the antenna combiner are supported through 10 N-type female connectors.
mBSC-C RU Figure 13Single-band RU Enclosure 3.3.2.
mBSC-C 3.3.2.1.1 RU Multi-Carrier Power Amplifier (MCPA) Modules The MCPA Module is the heart of the mBSC RUM Enclosure. The MCPA Module boosts the BTS forward link transmission signal. Operating on28VDC input, the MCPA Module produces 5W composite RF power for each band (measured at output of the antenna combiner). The mBSC system provides linear amplification of multi-carrier, mixed-mode signals in the 700MHz, 850MHz, 1900MHz, 2100MHz and 2600MHz frequency bands with the respective RU’s. 3.3.2.1.
mBSC-C RU An alarm is provided that indicates if a high temperature condition occurs. 3.3.2.5 Powering The single-band RUM enclosure is equipped with connector board in the bottom of chassis that provides a connection point for the DC power cable from RPM. The single-band RUM enclosure is powered by 28V DC. 3.3.2.6 User Interface The single-band RUM enclosure user interface includes the various connectors that are provided on the exterior enclosure.
mBSC-C # Indicator 1 RUN Status Description Green(Flashing) System operating normally Red(Flashing) System alarm RU 3.3.3 RTM The RTM module provides two key functions: 1. Electrical-optical/optical-electrical signal conversion and separates the combined multi-band RF signals into simplex connections for delivery to the respective single-band RU Enclosures 2.
mBSC-C RU Figure 15 RTM enclosure 3.3.3.1 Primary Components 3.3.3.1.1 Optical Modules The RTM enclosure interior layout, shown in Figure 11, is equipped to interface up to five bands (700MHz, 850MHz, 1900MHz, 2100MHz and 2600MHz). The enclosure includes weatherproof housing, plug in plug in CM multi-slot chassis and internal multiplexer, RF-optic transceiver, and control unit elements.
mBSC-C RU Figure 16 RTM Interior Layout 3.3.3.1.2 Multiplexer & Duplexer The multiplexer separates the various band frequencies respectively. The duplexer is used to make the bi-directional signals into simplex signals and provides sufficient isolation. 3.3.3.1.3 RF-Optic Transceiver The RF-Optic Transceiver is an optical module providing conversion between RF signals and optical signals over a single fiber.
mBSC-C # PIN Definition Description 8 PIN8 TXD0/B0 Channel0: RS485-B0 9 PIN9 PD ALM Photo-detector error RU Table 8 RF-Optic Transceiver Indicators # Indicator 1 POWER 2 PD ALARM 3 LD ALARM Status Description Green Normal Off No power supply Off Photo-detector works Red Photo-detector error Off Laser Device works Red Laser Device error Notes: If the fiber is not connected properly, both of the HU and RN’s PD ALARM indicator will alarm (red LED).
mBSC-C # User Interface Designation Device Functional Description 4 DL(700~2600) QMA female RF coaxial connector RF inter-connection to DL of RUM 7 DEBUG Mini USB connector Support Local debugging RU Figure 17 RTM interface Table 10 Indicator Description # 1 Indicator RUN Status Description Green(Flashing) System operating normally Red(Flashing) System alarm 3.3.4 RPM The RPM provides 28V DC power connection and distribution to each enclosure.
mBSC-C RU Figure 18 RPM Outline 3.3.4.1 Primary Components The RPM enclosure interior layout, shown in Figure 11, is consists of power supply board, battery board, connector board and power control board.
mBSC-C RU chassis. 3.3.4.1.1 Power supply board The RPM enclosure is equipped with a 3-wire AC power connector that provides a connection point for the AC power cable. AC power input via power supply board convert to 28V DC distributed to RUMs and RTMs by connector board on the bottom of RPM enclosure. Power supply board provides 28V DC to battery board and control board. Figure 19 RPM interior layout 3.3.4.1.2 Control board Control board manages power supply alarm and report to NMS. 3.3.4.1.
mBSC-C RU 4 System Installation 4.1 Unpacking and Inspection Every mBSC-C component has been tested and calibrated at the factory. Unpack the mBSC-C components carefully after they arrive at the installation site. Open the wooden container and remove the foam padding. If the equipment is damaged: Immediately contact the transportation and notify them of the damage. A claim should be filed with the carrier once the extent of any damage is assessed.
mBSC-C RU The rack should be selected with adequate shelf space to accommodate the Host Unit equipment with adequate space for ventilation around each component The rack must be able to support the weight of the equipment to be installed The mBSC Remote unit is typically installed on the wall: The wall should be water-resistant, dry, non-caustic and without high-voltage power leaking. The wall’s bearing capacity is more than 136kg.
mBSC-C RU weight of all the equipment and be securely anchored. Installing the Host Unit in a room with sufficient air circulation is recommended as the maximum ambient temperature for Host Unit is 60°C. Use the following steps to install the Host Unit in the equipment rack: 1. The Host Unit is built with mounting bracket installed for 19” rack installation. Figure 20 Mounting Brackets for 19” Rack Installation 2. Position the host unit in the designated mounting space in the rack as shown below. 3.
mBSC-C RU 4.3.2 Cable Connections Note The NEC(National Electrical Code) does not allow signal wires to share the same conduit with power wires unless the signal cable’s voltage range is equal to the power wire’s voltage range. Avoid bundling signal cable and grounding cable/power cable, keep them separate. The power cable and RF inter-connection cables are supplied. Check open and short circuits before installing the power cable. 4.3.2.1 Grounding The host unit must be grounded.
mBSC-C RU Figure 23 Grounded Host Unit 4. Tighten the screw, making sure the cable is securely connected before moving to the next phase of the installation. 4.3.2.2 Coaxial Cable Connections The RF interface between the Host Unit and the BTS (or POI) is supported through Tx/Rx QMA female connectors mounted on the Host Unit front panel. The Host Unit should be mounted as close as possible to the BTS to minimize RF cable losses.
mBSC-C RU Figure 24 BTS QMA Coaxial Cable Connection 5. Dress and secure cable at the Host Unit. 6. The RF inter-connection between the BIU and the FIU uses QMA to QMA jumper cables supplied with the mBSC-C equipment. 4.3.2.3 Optical Connections The optical interface between the Host Unit and the Remote Node is supported by an E2000/APC optical adapter which is mounted on the FIU front panel. A single mode, E2000/APC patch cord may be used to connect the Host Unit with Remote Node.
mBSC-C 5. RU Connect optical fiber to the Remote Node RTM fiber port. 4.3.2.4 DC Power Connection The DC power interface of the Host Unit is provided by a 2-wire termination located on the HU rear panel. The DC termination provides a connection point for the power cord which is provided separately with the HU. Use the following procedure to install the DC power: 1. Locate the 48 VDC power cord which is provided separately with the HU. 2.
mBSC-C RU Figure 28IP Connection for local GUI Control 4.3.2.6 Modem Connection (optional) For remote operation, the mBSC-C system provides a serial modem connecter for external modem connection. To connect a modem with the host unit: 1. Route the modem cable between the modem and host unit. 2. Connect the modem cable with a DB9 female plug to the modem socket on the host unit’s RCU front panel. Figure 29Modem Port on RCU (DB9 male) 3. 4.
mBSC-C RU 4.4.1 Cable Connections Attention All the power switches must be switched off before cable installation. Avoid bundling signal cable and grounding cable/power cable, keep them separate. The power cable and RF inter-connection cables are supplied. Check open and short circuits before installing the power cable. 4.4.1.
mBSC-C RU Figure 30 RF Inter-Connect between BCM and Single-band RU 4.4.1.1.2 Single-band RUM to RTM To connect the coaxial cable between RTM enclosure and single-band RUM enclosure: 1. Obtain the required lengths of high performance, flexible, low loss 50Ω coaxial communication cable for all coaxial connections. 2. Route the RF UL/DL path coaxial cable between the RTM enclosure and single-band RUM enclosure interface and cut to the required length. 3.
mBSC-C RU Figure 31 RF Inter-Connect between RTM and Single-band RU 4.4.1.2 Antenna Cable Connection Route a coaxial antenna cable from the antenna to the equipment enclosure. The cable must be terminated with the proper connector for connecting to the antenna port on the panel of BCM enclosure. Below is the procedure to install the antenna cable: 1. Remove the dust cap from the DIN type female connector located on the panel of the BCM enclosure. 2.
mBSC-C RU Figure 32 Fiber Optic Cable Connection to RTM Enclosure 5. Route the patch cords from the fiber optic distribution box to the designated optical port on the panel of the RTM enclosure. 6. Identify each optical fiber. 4.4.1.4 AC Power Connection Danger Use extreme caution when working with high voltage AC power. Ensure all power is disconnected before working on power circuit. Warning Verify that the unit has been ground with an earth-bonding cable to the grounding connector.
mBSC-C RU Figure 33 RPM 2. Terminate the AC power supply wires that are required between the RPM and the local source of AC power. 3. Tighten the coupling nut. 4.5 Installation Final Inspection The following section provides a set of review procedures once the physical installation and connections are complete. Leave the source AC power at the Host Unit and Remote Node in the OFF position (breaker open) to prevent accidental power-up.
mBSC-C 4.5.
mBSC-C 4.5.
mBSC-C RU 4.5.3 mBSC-C Inspection Checklist Table 11mBSC Unit Inspection Item Description 1 Stable and normal. 2 4 Properly fastened Screws and nuts screwed tightly, without missing flat washers and spring washers. Spring washers must be on the top of flat washers. No cable damage. 5 Clean, no smudges or dust. 6 Connections between metallic parts must be reliable, to assure reliable electric connectivity. 3 4.5.
mBSC-C RU Test Start HU installation & configuration HU RF signal input/output level adjustment Reserve path signal level evaluation HU optical power level test RU installation, cable & antenna connection No RU VSWR is normal? Check connection of cable & antenna Yes RU optical power lever is normal? Yes RU power on Reserve path pre-attenuation RU forward path adjustment RU reverse path adjustment Forward path and reserve path balance adjustment RU parameter configuration No Adjust relate
mBSC-C RU 5 System Monitoring &Configuration 5.1 Accessing EMS Local GUI The MBSC2100-005-RUCM11 system supports local configuration through a web-based Element Management System (EMS) graphical user interface (GUI) accessed through the RJ-45 and USB ports of the Host Unit RCU card. The EMS local GUI is a web-based application supported by standard web-browsers. Microsoft Internet Explorer® is recommended. System configuration and monitoring can also be performed from a remote EMS Server.
mBSC-C RU 5.1.2 Using USB Port Access to the EMS Local GUI through a standard USB connection is also available at both the Host Unit RCU card, and the RTM enclosure of the Remote Node. The EMS Local GUI has a fixed IP address assignment when accessed through the USB port – it is set at the factory and cannot be changed. Steps: 1. Install the USB-Ethernet driver on the laptop/computer. The laptop/computer must be connected to the internet in order for the drivers to be automatically installed. 2.
mBSC-C RU 5.1.3 Login to EMS Local GUI Access the EMS Local GUI as follows: 1. Type the appropriate URL into the browser (e.g. http://192.168.5.220 for USB port). The dialog box shown in Figure 40– EMS Local GUI Login will appear. 2. User name: Type in the user name provided for you to access the system (default = “admin”) 3. Password: Type in the password provided for you to access the system (default = “”) 4.
mBSC-C 5.2 RU Navigating the EMS Local GUI When logged in to the EMS Local GUI, it displays the main page as shown in Figure 41. On the left side of the main page the topology of the mBSC-C system you are connected to is automatically displayed. This includes the Host Unit and the fiber attached Remote Nodes. On the right side is a floating window for displaying system component properties.
mBSC-C RU Figure 39- Main Page Summary View 5.2.1 Topology Tool Bar Various functions can be performed by clicking on the following icons. Table 14 Tool Bar Functions Tool Function Zoom in – Zooms in the topology diagram Zoom out – Zooms out the topology diagram Reset – Resets the topology view to default Overview – Resizes topology diagram to full screen Re-discover Re-Discovery – Constructs the topology upon initial local GUI login or changes in system configuration.
mBSC-C RU 5.2.2 Upgrade/Password Functions The links in the upper right corner contain the Upgrade, Password, and Help functions. Table 15 General GUI Tools Function Description Upgrade Perform a component Password Change the login password for current User Help 5.3 software upgrade System information and Help Installation & Configuration 5.3.1 Network & Communications 5.3.1.
mBSC-C RU Figure 40- RCU Component View 5.3.1.2 Assign IP Address for Remote EMS Server The mBSC-C system can also be managed from a remote EMS Server. To communicate with the remote server the IP address must be reachable form the local network, and must be configured within the RCU. To assign the IP address of the remote EMS Server: 1. Click on the RCU in the topology diagram and the component window will pop up on the right as shown in Figure 43- RCU Component View. 2.
mBSC-C RU a. NMS IP Address(IP4): enter the value assigned to the remote EMS Server b. NMS IP Port: enter port (default value is 8008) c. Equipment Default gateway: enter assigned gateway 3. Click Save 5.3.1.3 Assign HU Site Name/Number Users can create a name or a site number for the Host Unit. This information is displayed in the Summary View (Figure 42- Main Page Summary View), or is used in the EMS Server to distinguish between multiple Host Shelves and/or multiple mBSC systems.
mBSC-C RU Figure 41- Main Page Equipment Status Check the current status of each component as follows: 1. Update Topology view: a. Click Re-Discover: If new equipment (eg. Remote Node) has been added but does not yet show up in the topology view b. Click Refresh: If all components appear and to ensure current status is reflected 2. Review HU status indicators: a. All OK: Component LEDs in the HU shelf indicate green state b. Error/alarm: Component LEDs are flashing red, and a red “balloon” is present 3.
mBSC-C RU Figure 42- FIU Optical Power Levels Check optical power levels at the Remote Node as follows: 1. Click on the CM in the topology diagram and the component window will pop up on the right as shown in Figure 46- CM Optical Power Levels. 2. Optical Transceiver 1 Tx Power: the output power of the CM 1 to the fiber. a. Nominal value is: +4.0 dBm +/-1.5 dB (impacted by temperature) 3. Optical Transceiver 1 Rx Power: the input power of the CM from the fiber. a.
mBSC-C RU Figure 43- CM Optical Power Levels 5.3.2.3 Verify Software Versions Click on Help in the upper right corner to verify the software version of the EMS Local GUI.
mBSC-C RU Figure 44 - EMS Local GUI Software Version To verify the software version installed on each component click on the Upgrade button in the top right: Figure 45 - Component Software Versions mBSC0850i-040-RUC11 April 15, 2013 Page 53
mBSC-C RU 5.3.3 Alarms 5.3.3.1 Optical Link Alarms Optical Link alarms at the FIU will occur for various reasons: 1. Remote Node not in service: The Remote Node connected to the specific FIU link is not yet powered up 2. Remote Node malfunctioning: connected to the specific FIU link is in an error state 3. Fiber issue: The fiber link between the specific FIU and the Remote Node has excessive loss (possibly due to breakage or to dirty optical connectors) 4.
mBSC-C RU Figure 46 – Optical Link Alarms To disable optical transceiver alarms: 1. Click on the desired FIU in the topology window. The FIU component dialog box will appear as in Figure 45- FIU Optical Power Levels 2. Optical transceiver 1 Alarm Enabled: a. To enable alarms place a “check” in the box b. To disable alarms clear the box 3. Optical transceiver 2 Alarm Enabled: a. To enable alarms place a “check” in the box b. To disable alarms clear the box 4. Click Save 5.3.3.
mBSC-C 5.4 RU System Tuning 5.4.1 BTS Signal Conditioning The interface from the operator BTS equipment to the MBSC2100-005-RUCM11 is via simplex RF connections to the BIU. The nominal downlink input to the BIU (TXin) is 0 dBm±1dB (range: -10dBm to +10dBm). If the BTS signal downlink exceeds +10 dBm, or the signal is a composite duplex RF signal, then RF signal conditioning will be required.
mBSC-C RU Figure 47 - BIU Attenuator mBSC0850i-040-RUC11 April 15, 2013 Page 57
mBSC-C 5.4.2.2 RU Adjust RU Downlink Attenuator Adjust the RU downlink value for the specific RU / frequency band as follows: 1. Click on the RU in the topology diagram and the component window will pops up on the right as shown in Figure 51 - RU Attenuator. 2. Downlink Attenuation Value: Input the appropriate values (0dB – 25dB range) 3.
mBSC-C RU 5.4.3 Set Uplink Gain It may be necessary to adjust the Uplink gain of the mBSC-C system in order to achieve a balanced forward and reverse link, or to adjust for other conditions (antenna placement, dynamic range requirements, propagation characteristics at different bands, specific RF design). The MBSC2100-005-RUCM11 provides two points of adjustment for uplink gain: 1. Software controlled attenuator for each band in the BIU 2.
mBSC-C RU 5.4.4 Link Verification The MBSC2100-005-RUCM11 system is equipped with features that enable the downlink and uplink link to be fine-tuned from the head-end location using common test equipment (RF signal generator and RF power detector). 5.4.4.1 Verify End-to-End Downlink Gain Each RU in the remote node is equipped with a calibrated Downlink Power Detector which will display the average power at the output of the RU.
mBSC-C RU Figure 49 – Up/Down Link Verification 5.4.4.2 Using Uplink Pilot Tone Generator Each RU in the remote node is equipped with an Uplink Pilot Tone Generator which will generate a CW RF tone out of the RU back towards the FIU and BIU.. By measuring the RF power at the RXout port of the BIU the end-to-end uplink system gain can be verified, and band-to-band / node-to-node, variations calibrated without additional test equipment required at the Remote Node.
mBSC-C RU b. Variations in filtering, amplifiers, and optical loss may cause the actual system gain to vary +/- 6 dB. All paths can be normalized by adjusting uplink attenuation settings in the BIU. 3. This procedure should be repeated for each frequency band in the system Note: Uplink Pilot Frequency Switch should be off during normal operations. This function is intended for testing, verifying, and adjusting uplink performance and will interfere with normal operation of the system. 5.
mBSC-C 5.5.1.2 RU Remote Node In the case of a Remote Node malfunction, the affected unit will also be marked with a red popup “alarm indicator”. Figure 54 - Remote Node Alarm Status illustrates a condition where both fans of an RU are not working (power cable disconnected): 1. The alarm indicator beside the affected RU in the topology view displays “2C” 2. Additional alarm status is shown in the lower right section of the RU component window.
mBSC-C RU 5.5.2 System Alarms The MBSC2100-005-RUCM11 provides alarm indications for equipment malfunctions or for conditions that place the out of standard operating range (such as over-power). A complete list of alarm events, and the originating product module, is provided in Table 15System Alarms. These events are enabled by default factory settings, but can be disabled if desired.
mBSC-C 14 415510 PA Loop Alarm Error correction loop unlocked 15 400310 PA Voltage Alarm PA voltage outside range 16 401300 PA Fault Alarm Internal PA fault detected 401000 Uplink LNA Fault Alarm Internal LNA fault detected 408301 Fan 1 Alarm Fan 1 is non-functioning (low current) 408302 Fan 2 Alarm Fan 2 is non-functioning (low current) 17 SSM 18 FAN 19 5.6 RU System Upgrade To conduct a system upgrade, navigate to the upper right section and click on “Upgrade”. 5.6.
mBSC-C RU 6 Maintenance Note: Check your sales order and equipment warranty before attempting to service or repair the mBSC-C system. Breaking the seals on equipment under warranty will void the warranty. Do not return equipment for warranty or repair until proper shipping instructions are received from the factory. 6.1 Electrostatic Discharge Precautions The mBSC-C system modules contain assemblies and components which are sensitive to electrostatic discharge (ESD).
mBSC-C RU The mBSC-C Host Unit components are equipped with multiple LED indicators that show status and alarms by displaying Green, Red or Off. Detailed descriptions of the LED indicators are provided respectively in section 3.2.7Host Unit Interface. The NMS software provides detailed alarm information which includes module level faults, circuit faults and measured value faults such as door, RF power and temperature. 6.
mBSC-C RU 6.4.1 Host Unit Trouble Shooting Is the HU shelf grounded? No Check the grounding connection and connect the ground cable to the HU No Check the power cable connection. Check the power supply connection. Check the PSU switch. No Check for pin connector damage on the BIU. If undamaged, reseat the board. Uninstall the BIU and re-insert the BIU into the HU slot. No Spare BIU available? No Check for pin connector damage on the FIU. If undamaged, reseat the board.
mBSC-C RU 6.4.2 Remote Unit Trouble Shooting LED on? No • • • Check power switch Check mains cabling Check mains power • Check the fiber cable connection on the fiber CM-BTS enclosure Check that the HU is installed and power is on. Check the fiber cable connection on the HU.
mBSC-C RU 7 Terms, Acronyms & Abbreviations Table 18 Terms, Acronyms and Abbreviations Terms/Acronyms/Abbreviation Definition ANT Antenna AWG American Wire Gauge BTS Base Transceiver Station or Base Transceiver System C° Degree Celsius COM Serial Communication Port CQT Call Quality Test dB Decibels dBm Power measurement referenced to the specific power level of one milli watt DCS Digital Cellular System DIN DL Deutsches Insitut für Normung eV (German standardsinstitution) German stan
mBSC-C RU Technical Parameter: Frequency Range Downlink 869MHz~894MHz/ 862MHz~869MHz Uplink 824MHz~849MHz/ 817MHz~824MHz Operating Bandwidth 25MHz/ 7MHz Multiple Carrier Supported 4 Channel Spacing(s) / Bandwidth(s) WCDMA: 5MHz; GSM/EDGE: 200KHz; CDMA/CDMA EV-DO: 1.25MHz; LTE: 1.4M,3M,5M,10M; Maximun RF Output Power Downlink: 46.29dBm(For 40W); 43.32dBm(For 20W)/ 46.26dBm(For 40W); 43.27dBm(For 20W) Uplink: 15.43dBm(For 40W); 15.37dBm(For 20W);/ 15.40dBm(For 40W); 15.
mBSC-C RU For US and Canadian installations: FCC RF exposure compliance requires the following antenna installation and device operation configurations be satisfied: A separation distance of at least 6 meters must be maintained between the antenna of this device and all persons. RF exposure compliance may need to be addressed at the time of licensing, as required by the responsible FCC Bureau(s), including antenna co-location requirements of 1.1307(b)(3). §2.
