OSB-BRU3902BRU3902 Mobitex Base Station

Contents 1 General ........................................................................................................ 3 1.1Description ....................................................................................... 4 2 About this Manual ....................................................................................... 6 3 Using this Manual........................................................................................ 7 3.1Safety Instructions............................................................................ 7 3.2Site Requirements ............................................................................ 7 3.3Installation ........................................................................................ 7 3.4Commissioning Procedure ............................................................... 8 3.5FBTEST Reference Manual ............................................................. 8 3.6Operation and Maintenance ............................................................. 8 3.7Functional Description ..................................................................... 9 3.8Telephone Modem Settings.............................................................. 9 4 Technical Data ........................................................................................... 10 4.1Power Requirements and Dimensions ........................................... 10 4.2Radio Parameters ........................................................................... 11 4.3Battery ............................................................................................ 12 4.3.1Battery Operation................................................................ 12 4.4Environmental Classifications ....................................................... 12 4.5Electromagnetic Compliance and Radio Standards ....................... 14 4.6Electrical Safety ............................................................................. 14 4.7Surge Immunity.............................................................................. 15 Introduction and Product Specification BRU3 MANUAL, Doc.no: 1551-EN/LZB 139 05 Uen Rev H, 2003-06-11 BRU3 MANUAL BRU3 MANUAL, Doc.no: 1551-EN/LZB 139 05 Uen Rev H, 2003-06-11 The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any errors or damages of any kind resulting from the use of this document. INTRODUCTION3 (16) BRU3 MANUAL, Doc.no: 1551-EN/LZB 139 05 Uen Rev H, 2003-06-11 1General Radio Base Unit 3 (BRU3) is a complete one-channel compact radio base station which uses 8 kbps data signalling and is designed for the 400, 800 and 900 MHz band. The BRU3, which may be installed outdoors and indoors, is a link between the mobile terminals (MOB) and the area exchanges (MOX) in the Mobitex Network. Figure 1 The front of Base Radio Unit 3 (BRU3). 4 (16)BRU3 MANUAL BRU3 MANUAL, Doc.no: 1551-EN/LZB 139 05 Uen Rev H, 2003-06-11 1.1Description The BRU3 consists of two main mechanical parts: The FBF comprises: The FTF is hinged to the bottom part and works as a cover as well as a cooling flange, thus offering good thermal management for the BRU3. The FTF comprises: FE Case Bottom Frame FBF(1) FE Case Top Frame FTF(5) Weather-protected throughputs for the cabling FE Connection Board FNB(11) FE Power Supply Unit FPU(2) FE Battery Unit, for power supply backup FBU(3) FE Adaptation BoardFAB(4) FE Computer BoardFCB(6) FE Modem Board FMB(7) FE Radio BoardFRB(8) FE Filter Module FFM(9) FE Heating Unit FHU(10) INTRODUCTION5 (16) BRU3 MANUAL, Doc.no: 1551-EN/LZB 139 05 Uen Rev H, 2003-06-11 Figure 2 Base Radio Unit 3 (BRU3). 6 (16)BRU3 MANUAL BRU3 MANUAL, Doc.no: 1551-EN/LZB 139 05 Uen Rev H, 2003-06-11 2About this Manual The BRU3 Manual, is designed for engineering personnel who are familiar with data communications terminology and protocols and who will work on site with the BRU3. The Manual is intended for: •Operation and Maintenance personnel •Installation and Commissioning personnel •System engineers •Training BRU3 units may be damaged by mismanagement. Therefore, read the documents included in this manual carefully before you start operating the BRU3, especially the Safety Instructions section. It is important that this manual be available to all personnel working with the BRU3, and that the BRU3 is operated only by trained personnel. The manual provides the necessary information for installation, commissioning and operation of the BRU3. It is divided into four main parts: •BRU3 - Installation module •BRU3 - General module (including the Commissioning Procedure section) •BRU3 - Operation and Maintenance module •BRU3 - Functional Description module The following sections are also included in the BRU3 - General module: •Safety Instructions •Site Requirements •FBTEST Reference Manual - complementary to the Commissioning Procedure section. •Telephone Modem Settings - complementary to the modem operation information in the Operation and Maintenance module. INTRODUCTION7 (16) BRU3 MANUAL, Doc.no: 1551-EN/LZB 139 05 Uen Rev H, 2003-06-11 3Using this Manual Before using this manual, you should have an overall understanding of how the Mobitex system operates as a wide-area packet switching network. If not, first refer to the System Manual. 3.1Safety Instructions This section contains safety instructions for handling the BRU3 during installation and maintenance. Please read the Safety Instructions section before reading the other sections or starting any kind of installation or maintenance work. 3.2Site Requirements This section covers the site preparations required, in terms of space, power, environment, cables, grounding, etc., before installing the BRU3. Normally, this kind of document is not included in hardware documentation but has been included in this manual as a complement to the Installation Instructions in the BRU3 - Installatio…

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Contents 1 Design, Function and Operation .................................................................. 3 1.1General ............................................................................................. 3 1.2Mechanical Parts .............................................................................. 4 1.3Start-Up and Shutdown Procedures ................................................. 8 1.3.1Start-Up Procedure ............................................................... 8 1.3.2Shutdown Procedure ............................................................. 8 1.3.3Restarting the BRU3 (Warm Start)....................................... 9 1.3.4Manual Restart of the BRU3 ................................................ 9 1.3.5Manual Restart of a BRU3 in Stand Alone Mode .............. 10 1.4Network Connections ..................................................................... 12 1.4.1General ................................................................................ 12 1.4.2Telephone Modem Boards.................................................. 13 1.5Logic Units..................................................................................... 17 1.5.1General ................................................................................ 17 1.5.2Connections ........................................................................ 17 1.5.3LEDs ................................................................................... 18 1.5.4Reset Button........................................................................ 18 1.6Radio Units..................................................................................... 19 1.6.1General ................................................................................ 19 1.6.2Radio Operation .................................................................. 21 1.6.3Reset.................................................................................... 21 1.6.4Connectors .......................................................................... 21 1.7Power Supply ................................................................................. 22 1.7.1General ................................................................................ 22 1.7.2FE Power Supply Unit (FPU) ............................................. 23 1.7.3FE Battery Unit (FBU) ....................................................... 26 1.7.4FE Heating Unit (FHU) ...................................................... 27 1.8Alarms ............................................................................................ 28 2 Maintenance .............................................................................................. 29 2.1General ........................................................................................... 29 2.2Equipment Required....................................................................... 30 OM Instructions BRU3 MANUAL, Doc.no: 1543-ANNA 805 08 Uen Rev H, 2003-06-10 BRU3 MANUAL BRU3 MANUAL, Doc.no: 1543-ANNA 805 08 Uen Rev H, 2003-06-10 The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any errors or damages of any kind resulting from the use of this document. 2.3Documentation Required ................................................................30 2.4Maintenance to be Performed .........................................................31 2.4.1Visual and Preventive Maintenance ....................................31 2.4.2Battery Test .........................................................................33 2.5Function Check ...............................................................................34 2.5.1General ................................................................................34 2.5.2Equipment Required ............................................................34 2.5.3Check of Internal Power Supply (Mains and Battery) ........35 2.5.4FBTEST Board Test ............................................................37 2.5.5Channel Unit Output Power ................................................38 2.5.6Transmitter Deviation..........................................................41 2.5.7Bit Errors at high Signal Levels ..........................................42 2.5.8Receiver Sensitivity .............................................................44 2.5.9Receiver Sensitivity at Frequency Deviation ......................46 2.5.10 Antenna input Signal ...........................................................48 2.5.11 Transmitter Antenna VSWR ...............................................49 2.5.12 Hardware Alarm Status .......................................................52 3 Troubleshooting .........................................................................................54 3.1General ............................................................................................54 3.2Power Supply Units ........................................................................55 3.2.1FE Power Supply Unit (FPU) ..............................................55 3.2.2FE Battery Unit (FBU) ........................................................56 3.3Logic and modem units...................................................................57 3.3.1FE Computer Board (FCB) .................................................57 3.3.2FE Modem Board (FMB) & FE Adaptation Board (FAB) .58 3.3.3FE Connection Board (FNB) ...............................................58 3.4Radio units ......................................................................................59 3.4.1FE Radio Board (FRB) ........................................................59 3.5FE Heating Unit (FHU) ..................................................................59 3.5.1FE Heating Board (FHB).....................................................59 OPERATION AND MAINTENANCE, MODULE B13 (60) BRU3 MAN…

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Contents 1 Introduction ................................................................................................. 3 1.1The Mobitex System ........................................................................ 3 1.2BRU3 Presentation ........................................................................... 4 1.2.1Technical Performance ......................................................... 5 2 Preparations Before Installation .................................................................. 7 2.1Storage.............................................................................................. 7 2.2Transport .......................................................................................... 7 2.3Before Installation ............................................................................ 7 2.3.1Material and Tools That Are Not Provided by Ericsson ...... 8 2.4Space Required................................................................................. 9 2.4.1General ................................................................................ 10 2.4.2Above the BRU3................................................................. 10 2.4.3Below the BRU3 ................................................................. 10 2.4.4On both sides of the BRU3 ................................................. 11 2.4.5In front of the BRU3 ........................................................... 11 2.4.6Installation Alternatives ...................................................... 11 3 Power Requirements.................................................................................. 14 4 Cables and External Connections .............................................................. 15 4.1General ........................................................................................... 15 4.2Connecting Power .......................................................................... 18 4.3Connecting Network Communication............................................ 21 4.3.1Integrated V.32 Telephone Modem .................................... 23 4.3.2Unbalanced serial port, RS 232C........................................ 24 4.3.3Balanced serial port, RS 422B ............................................ 25 4.4Connecting the Alarm .................................................................... 26 4.4.1Alarm Loop for Customer’s Use ........................................ 27 4.5Connecting the Antenna ................................................................. 29 5 Grounding .................................................................................................. 31 6 Connecting Antenna Cables and Mounting Antennas............................... 32 7 Lightning Protection .................................................................................. 35 Site Requirements BRU3 MANUAL, Doc.no: 1533-ANNA 805 08 Uen, Rev H, 2003-06-11 BRU3 MANUAL BRU3 MANUAL, Doc.no: 1533-ANNA 805 08 Uen, Rev H, 2003-06-11 The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any errors or damages of any kind resulting from the use of this document. SITE REQUIREMENTS3 (36) BRU3 MANUAL, Doc.no: 1533-ANNA 805 08 Uen, Rev H, 2003-06-11 1Introduction This document covers the site preparations to be made before the Mobitex Base Radio Unit 3 (BRU3) is installed, in terms of space required, power consumption, environmental data, cables, grounding, antenna etc. The instructions in the BRU3 - Installation module should be followed when installing the BRU3. Before installation takes place, the site should be prepared in accordance with what is described in this document. This is important not only for a correct and safe installation, but also for saving time. 1.1The Mobitex System Mobitex is a digital packet switching network for data, text and status communication. Subscriber terminals can be either fixed or mobile. The network includes services for emergency (alert) messages. The nodes in the network are connected to each other in a strictly hierarchical structure. The mobile terminals communicate by radio with the radio base stations, which are connected to an area exchange. Each area exchange is upwards connected to a main exchange, which can be found at one or more levels. The main exchange at the highest level, also referred to as the top node, connects the network to the Network Control Centre (NCC). The network is supervised from the NCC and this is also where the subscription information is entered into the system. The fixed terminals, which are connected directly to an area exchange, consist of terminals or computers. 4 (36)BRU3 MANUAL BRU3 MANUAL, Doc.no: 1533-ANNA 805 08 Uen, Rev H, 2003-06-11 1.2BRU3 Presentation Base Radio Unit 3 (BRU3) is a complete one-channel compact radio base station which uses 8 kbps data signalling and is designed for the 400, 800 and 900 MHz band. The BRU3, which may be installed outdoors or indoors, is a link between the mobile terminals (MOB) and the area exchanges (MOX) in the Mobitex Network. The BRU3 contains logic, modem units, radio units, a power supply unit including AC/DC and DC/DC converters, a battery backup and a heating unit. All parts are integrated in the case shown below. The BRU3 is equipped with connections for antenna, power, line, modem, alarms and console terminal. Figure 1 BRU3 pole installation. SITE REQUIREMENTS5 (36) BRU3 MANUAL, Doc.no: 1533-ANNA 805 08 Uen, Rev H, 2003-06-11 1.2.1Technical Performance BRU3 Dimensions Environmental Classifications Water resistant: Weather-Protected Locations: ETS 300 019-1-3: Environmental Class 3.3, with extended temperature range for 34xx. Width:472 mm Height:345 mm (incl. 40 mm handle) Depth:202 mm Weight39xx:18 kg 38xx18 kg 34xx:19 kg Europe: class IP 43 according to IEC 529 US:class 3R according to UL 50 39xx:-25 °C to +55 °C 38xx-25 °C to +55 °C 34xx:-33 °C to …

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Contents Safety Instructions BRU3 MANUAL, Doc.no: 124 46-ANNA 805 08 Uen Rev G, 2003-06-10 1 Introduction ................................................................................................. 3 2 Safety Instructions ....................................................................................... 4 2.1Definition of Expressions................................................................. 5 3 IT Power System ......................................................................................... 6 4 Precautions .................................................................................................. 7 4.1High Voltage .................................................................................... 7 4.2Grounding ........................................................................................ 7 4.3Radio Frequency Exposure .............................................................. 7 5 Poisonous Substances .................................................................................. 8 5.1Nickel Cadmium (NiCd) .................................................................. 8 5.1.1Locating and Removing the Battery Pack ............................ 8 5.2Beryllium Oxide (BeO).................................................................. 10 5.2.1Existence of Beryllium Oxide in BRU3 ............................. 10 5.2.2Grade of Toxicity ................................................................ 11 5.2.3Symptoms of Poisoning ...................................................... 11 5.2.4First Aid .............................................................................. 11 5.2.5Handling Components Containing Beryllium Oxide.......... 11 5.2.6End of Life Treatment......................................................... 12 5.2.7Labels .................................................................................. 12 5.2.8Locating and Removing the Beryllium Oxide Component 13 5.3Electro Static Discharge (ESD)...................................................... 20 6 Rules and Requirements - Europe ............................................................. 21 6.1General Safety Statements ............................................................. 21 6.2Statements for Connection to Telephone Networks in the UK...... 22 7 Rules and Requirements - USA/Canada.................................................... 23 7.1FCC - Rules and Requirements ...................................................... 23 7.2BRU3 Classification....................................................................... 23 7.3BRU3 Interference ......................................................................... 23 7.4BRU3 Changes or Modifications ................................................... 24 BRU3 MANUAL BRU3 MANUAL, Doc.no: 124 46-ANNA 805 08 Uen Rev G, 2003-06-10 The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any errors or damages of any kind resulting from the use of this document. 7.5Government Requirements and Equipment Return ........................24 7.5.1USA .....................................................................................24 7.5.2Canada .................................................................................26 8 Electrical Safety .........................................................................................28 8.1Safety Instructions ..........................................................................28 SAFETY INSTRUCTIONS3 (28) BRU3 MANUAL, Doc.no: 124 46-ANNA 805 08 Uen Rev G, 2003-06-10 1Introduction This section contains Safety Instructions for handling the MOBITEX Base Radio Unit 3 (BRU3) during installation and maintenance work. Please read the Safety Instructions before starting any kind of installation or maintenance work. 4 (28)BRU3 MANUAL BRU3 MANUAL, Doc.no: 124 46-ANNA 805 08 Uen Rev G, 2003-06-10 2Safety Instructions Note!Reduce the risk of accidents by studying all the instructions carefully before starting work. If questions arise regarding the safety instructions, contact your supervisor or the local Ericsson company. Read and follow all warning notices and instructions found on the product or included in the BRU3 manual. Ericsson takes no responsibility if the labels have disappeared from a BRU3 due to accident or age. Where local regulations exist, these are to be followed. The safety information in this manual is a supplement to local regulations. It is the responsibility of the local project manager to make certain that local regulations are known and followed. The relevant manual (including this safety information) and specific instructions supplied by Ericsson must be followed in any work performed on the Ericsson products or systems. Sufficient knowledge of English or of any of the other languages in which the manuals or instructions are printed is necessary. The safety information in the relevant manuals presupposes that any person performing work on Ericsson products or systems has the necessary education, training and competence required in order to perform that work correctly. For certain work, additional training or special training may be required. For more precise information on the amount and content of the general and/or special training required for work on Ericsson products or systems, please contact the supervisor or the local Ericsson company. The BRU3 is intended to be used with a three-wire mains connection plug - a plug which has a grounding pin. This is a safety feature. Grounding of the BRU3 is vital to ensure safe operation. Do not defeat the purpose of the grounding type plug by modifying the plug or using an adapter. The slots and openings in the bottom of the BRU3 are provided for ventilation. To ensure reliable operation of the product and to protect it from overheating, these slots and openings must not be blocked or co…

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Contents BRU3 in the Mobitex Network BRU3 MANUAL, Doc.no: 155 19-ANNA 805 08 Uen, Rev E, 2003-03-18 1 The BRU3 in the Mobitex Network ............................................................ 3 1.1The BRU3 as a Radio Station .......................................................... 4 1.2The BRU3 as a Node........................................................................ 6 1.3Data .................................................................................................. 6 1.4Services and Users ........................................................................... 6 1.5Data Rate .......................................................................................... 7 2 Network Layer ............................................................................................. 8 2.1Mobitex Packet Types...................................................................... 8 3 Link Layer ................................................................................................. 10 3.1Radio Protocol................................................................................ 11 4 Frame Types .............................................................................................. 13 4.1Radio Channel ................................................................................ 15 4.1.1System Channels................................................................. 15 4.1.2Traffic Channels ................................................................. 15 5 Roaming .................................................................................................... 16 5.1Channel Access Protocols .............................................................. 16 5.1.1Base to Mobile .................................................................... 16 5.1.2Mobile to Base .................................................................... 17 5.1.3Repetition ............................................................................ 18 5.1.4Message Sequence Numbers .............................................. 19 5.2Autonomous Operation .................................................................. 19 BRU3 MANUAL BRU3 MANUAL, Doc.no: 155 19-ANNA 805 08 Uen, Rev E, 2003-03-18 The contents of this document are subject to revision without notice due to continued progress in methodology, design and manufacturing. Ericsson shall have no liability for any errors or damages of any kind resulting from the use of this document. BRU3 IN THE MOBITEX NETWORK3 (20) BRU3 MANUAL, Doc.no: 155 19-ANNA 805 08 Uen, Rev E, 2003-03-18 1The BRU3 in the Mobitex Network The base radio unit 3 BRU3 provides cellular radio communication facilities in the Mobitex packet switching system. This radio channel enables data communication to be established with mobile terminals. The BRU3 also serves as a switching node in the network. The BRU3 is a one-channel node specified for installation when only one radio channel is required. This opening section examines network parameters which play a direct role in the operation of the base radio unit. If you are encountering Mobitex for the first time, you should first refer to the System Manual, which provides a comprehensive description of the Mobitex system. 4 (20)BRU3 MANUAL BRU3 MANUAL, Doc.no: 155 19-ANNA 805 08 Uen, Rev E, 2003-03-18 1.1The BRU3 as a Radio Station In its role as a cellular radio base station, the BRU3 connects roaming mobile terminals to the Mobitex network by means of a trunked radio link. This trunked link allows a large number of terminals to be handled on the same radio channel. An overview of an simple Mobitex network is shown in Figure 1 “Simple Mobitex network.”. The BRU3 is equipped with one full duplex radio channel. The up frequency for the channel is used to transmit from mobile to base. The down frequency is used to transmit from base to mobile. The terms up and down traffic are used throughout this manual in this context. Figure 1 Simple Mobitex network. NCC MHX MOX MOX BASBASBASBAS MOBMOBMOB FSTFSTFSTFST 1/LZEA 801 256 R1 BRU3 IN THE MOBITEX NETWORK5 (20) BRU3 MANUAL, Doc.no: 155 19-ANNA 805 08 Uen, Rev E, 2003-03-18 In data communication terms, the mobile can be seen as a special type of terminal, interfaced to the network by the Mobitex radio protocol. Mobitex mobile terminals are free to roam within the radio coverage area of radio base stations in the network. Within this area, a mobile selects a base station with which to communicate, on the basis of its received signal strength. This base station is known as the current base station for the mobile concerned, and the mobile is said to be roamed in to that base. Figure 2 The mobile-network interface. NETWORK LEVEL LINK LEVEL APPLIATIO N LAYERS To MOXUser HDLC or X.25 protocolMobitex Radio Radio Frame MPak HDLC/X25 Frame MPak (((((((((((( )))))))))))) 19/LZEA 801 294 R1 Protocol Base station Mobile terminal 6 (20)BRU3 MANUAL BRU3 MANUAL, Doc.no: 155 19-ANNA 805 08 Uen, Rev E, 2003-03-18 1.2The BRU3 as a Node When a base station connects a mobile terminal that is roamed in to a subscriber that is not roamed in to the same base station, the base station acts as an end node for the mobile. In this situation, packets sent by the mobile are routed through the minimum number of MOX and MHX network nodes, to the end node for the addressee. If the addressee is a fixed terminal, this will be a MOX. In the case of a mobile, it will be another base station. This second base station transmits the packets to the mobile terminal identified by the address contained in the packet. When connecting mobiles for which the base station is the current base station, it functions as the turn node for the connection, and no other part of the network is directly involved in the packet switching. 1.3Data The BRU3 provides data connection. In the Mobitex network, data circuits are packet-switched over logical channels. The use of the word “connect” when describing data circuit…

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