Related Manuals for Allen Telecom MIKOM MR801B
Summary of Contents for Allen Telecom MIKOM MR801B
- Page 1 User’s manual for Repeater MR801B Power User’s manual for band or channel selective Repeater MR801B Power (Id.-No. 148613) Author: Approved: M0067A0A.doc Id.-No 151111 Page 1 02-JUNE-99...
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Page 2: Table Of Contents
User’s manual for Repeater MR801B Power Table of Contents LIST OF UNIT SPECIFIC ABBREVIATIONS CONTENTS OF DELIVERY HEALTH AND SAFETY WARNING PREAMBLE INTRODUCTION Intended purpose About the MR801B POWER FUNCTIONAL DESCRIPTION General RF modules Mother board Control module SM 2009 Duplexer Active combiner Measuring aids... - Page 3 User’s manual for Repeater MR801B Power BITE and alarms 3.4.1 Handling of alarms 3.4.2 Status report 3.4.3 Severity levels OPTIONAL EQUIPMENT VSWR module External alarms Modem Battery backup module SPECIFICATION Electrical specification Mechanical specification Environmental and safety External electrical interfaces 5.4.1 Electrical power 5.4.2...
- Page 4 User’s manual for Repeater MR801B Power TROUBLE SHOOTING Error indication Boot process Alarm monitoring with the STATUS HIST command Power supply General remarks MAINTENANCE General Replacement of the fuses (mains) Replacement of the power supply fuse Replacement of the mains cable Replacement of the RAM / RTC battery Replacement of the dummy battery backup module Replacement of duplexers...
- Page 5 User’s manual for Repeater MR801B Power SPARE PARTS LIST APPENDIX 11.1 Installation drawing of the Repeater 11.2 Top view of the Repeater (left side , one channel configuration) 11.3 Top view of the Repeater (right side, one channel configuration) 11.4 One channel configuration –...
- Page 6 User’s manual for Repeater MR801B Power LIST OF FIGURES AND TABLES table 1-1 List of international sales offices................12 figure 2-1 Block diagram of MR801B Power ...............14 figure 2-2 Top view of an RF module...................16 figure 2-3 Top view of a mother board .................17 figure 2-4 Top view of the control module................18 figure 2-5 Top view of the duplexers ..................19 figure 2-6 Top view of the active combiner module..............20...
- Page 7 User’s manual for Repeater MR801B Power figure 9-11 Position of control module .................63 figure 9-12 Power supply......................63 figure 9-13 Position of special-nut M4..................64 figure 9-14 Position of counter sunk screws on active combiner ...........65 figure 9-15 Position of the feed forward amplifier reset board ..........66 figure 9-16 Position of feed forward amplifiers (4-channel Repeater) ........67 table 10-1 Spare parts list .....................69 figure 11-1 Installation drawing of the Repeater ..............70...
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Page 8: List Of Unit Specific Abbreviations
User’s manual for Repeater MR801B Power LIST OF UNIT SPECIFIC ABBREVIATIONS Automatic Level Control BCCH Broadcast Control Channel BITE Built In Test Equipment Base Transceiver Station Downlink European Telecommunication Standard FFwd Feed Forward Amplifier Id.-No. Ident Number I²C-Bus Inter Integrated Circuit Bus ( Philips ) Local Maintenance Timeout MIKOM Repeater Operation and Maintenance Centre... -
Page 9: Contents Of Delivery
User’s manual for Repeater MR801B Power CONTENTS OF DELIVERY Repeater MR801B Power User’s manual for Repeater MR801B Power ( Id.-No. 151111 ) Assembly guide for modification kits Set of test protocols consisting of an electrical acceptance test protocol and a safety test protocol applying to the power supply Spare parts kit containing: - 1 control cable RS232, - 1 hex socket key, size 2.5... -
Page 10: Health And Safety Warning
User’s manual for Repeater MR801B Power HEALTH AND SAFETY WARNINGS Note: The electrical installation has to be performed in accordance with the safety regulations of the local authorities. Due to safety reasons the electrical installation must be performed by qualified personnel. The cover of this unit should not be opened while power is applied. -
Page 11: Preamble
User’s manual for Repeater MR801B Power PREAMBLE In cellular systems, Repeaters are used to enhance the influence of a base station in regions where, due to topological conditions, poor field strengths disable communication. MIKOM is a leading manufacturer of Repeaters. They provide excellent electrical characteristics, they are light-weight and easy to install. - Page 12 User’s manual for Repeater MR801B Power LIST OF INTERNATIONAL SALES OFFICES Allen Telecom Allen Telecom ( Australia ) Forem France 30500 Bruce Industrial Parkway PO Box 903 Z.I. des Ebisoires Cleveland, Ohio 44 139-3996 Bankstown NSW 2200 78370 Plaisir Australia...
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Page 13: Introduction
User’s manual for Repeater MR801B Power 1 Introduction 1.1 Intended purpose Cellular telephone systems transmit signals in two directions between base stations and mobile telephones within the signal coverage area. If weak signal transmissions occur within the coverage area because of indoor applications, topological conditions or distance from the transmitter, a Repeater is used to extend transmission range. -
Page 14: Functional Description
User’s manual for Repeater MR801B Power 2 Functional description The Repeater MR801B Power can be equipped from one to four bands or channels. The following block diagram shall illustrate the configuration of the system. *: one physical module contains UL and DL **: with more than two channels, the amplifiers are included;... -
Page 15: General
User’s manual for Repeater MR801B Power 2.1 General The Repeater consists of two amplifier chains, which are connected antiparallel. The receive path of one direction is connected to the transmit path of the other direction by a frequency separation unit, in the following denominated as a duplexer, which combines both signals to an antenna (See chapter 2.5). - Page 16 User’s manual for Repeater MR801B Power figure 2-2 Top view of an RF module M0067A0A.doc Id.-No 151111 Page 16 02-JUNE-99...
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Page 17: Mother Board
User’s manual for Repeater MR801B Power 2.3 Mother board The function of the mother board is the communication between the RF modules and the control module via the I²C-Bus. In the three and four channel configuration of the Repeater there is a mother board on the left and on the right side, whereas in the one and two channel configuration there is only one mother board implemented on the right side of the Repeater. -
Page 18: Control Module Sm 2009
User’s manual for Repeater MR801B Power 2.4 Control module SM 2009 The control module SM 2009 is a DOS compatible micro computer. The whole communication between the operator and the Repeater can be done via the control module. By using either the RS232 interface in connection with a modem card and a mobile the Repeater can be controlled remotely or locally by using a VT100 terminal, i.e. -
Page 19: Duplexer
User’s manual for Repeater MR801B Power 2.5 Duplexer The task of the duplexer is to isolate uplink from downlink, i.e. isolate transmit path from receive path. The pass bandwidth of the duplexer is the entire width of the uplink band and the downlink band. -
Page 20: Active Combiner
User’s manual for Repeater MR801B Power 2.6 Active combiner After passing through the RF modules, the signals will be combined by the active combiner module in the UL and in the DL path. The active combiner will be followed by the feed forward amplifier. -
Page 21: Power Supply
User’s manual for Repeater MR801B Power 2.8 Power supply For the MR801B Power four power supplies are necessary. Power supplies are available with different mains power. See list below for available power supplies. • 115 VAC ± 15% / 40 - 65 Hz •... -
Page 22: Feed Forward Amplifier
User’s manual for Repeater MR801B Power figure 2-8 ON / OFF position of external switch Note: To switch the whole Repeater voltage free, you have to remove the fuses F1 and F2 on the screw terminal. The power supply is factory-set. 2.9 Feed forward amplifier The feed forward amplifier is the final stage which enables high output power as well as a high ICP3. -
Page 23: Functions And Features
User’s manual for Repeater MR801B Power 3 Functions and features 3.1 Band and channel selectivity The selectivity is achieved by highly selective filters in the IF part of the band / channel modules. 3.2 Gain setting The gain can be changed by introducing attenuation into the amplifier chain. By using a rotary switch the attenuation can be adjusted locally in the range from 0 dB to 30 dB maximum in steps of 2 dB. -
Page 24: Alc
User’s manual for Repeater MR801B Power 3.3 ALC In order to protect the amplifiers from overload and to prevent the system to generate spurious emission, the amplifiers have an Automatic Level Control, designed to limit the output power to a defined level. A part of the output power is rectified, amplified and used to control an attenuator network. - Page 25 User’s manual for Repeater MR801B Power All alarms can be checked by typing the ‘STATUS HIST’ command. Minor alarms with no influence on the system can be cancelled by typing the ‘ALARMACKN’ command, e.g. ALC active, VSWR or door open. The following print screen illustrates a possible ‘STATUS HIST’...
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Page 26: Handling Of Alarms
User’s manual for Repeater MR801B Power ALARM NAME ALARM ACTIVE STATUS AMPLIFIER BIAS FAILURE POWER SUPPLY 8 V FAILURE POWER SUPPLY 12 V FAILURE MAINS FAILURE SYNTH FAILURE DOOR OPEN VSWR ALARM FAILURE LITHIUM BATTERY VOLTAGE OVERTEMP INVALID LOGIN ATTEMPT I2C BUS FAILURE (13*) -
Page 27: Status Report
User’s manual for Repeater MR801B Power If the reason for the alarm has been cleared or if the alarm should continue, a new alarm message will not be repeated. If there was an interruption of at least one second after acknowledgement, a new alarm message will be generated. -
Page 28: Severity Levels
User’s manual for Repeater MR801B Power figure 3-6 Example of a STATUS report 3.4.3 Severity levels This parameter defines five severity levels for an alarm and can be set in the alarm mask (detailed description in the software manual). The severity levels indicate how the capability of the managed object has been affected. - Page 29 User’s manual for Repeater MR801B Power - Warning: The warning severity level indicates the detection of a potential or impending service affecting failure before any significant effect has been caused. Action should be taken to further diagnose and correction of the problem shall prevent a more serious service affecting failure.
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Page 30: Optional Equipment
User’s manual for Repeater MR801B Power 4 Optional equipment The following modules can be integrated as an option. 4.1 VSWR module VSWR signal is continually measured by a special VSWR module. An alarm can be given for VSWR < 10 dB. 4.2 External alarms With the following option it is possible to monitor 4 external alarms via the Repeater software. - Page 31 User’s manual for Repeater MR801B Power The electrical connection has to be as follows. External alarm 1 (low active) External alarm 2 (low acitve) External alarm 3 (high active) External alarm 4 (high active) Ground Configuration: 5 V / 0.5 mA max. for open collector applications. All external alarms are normally high without connection.
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Page 32: Modem
User’s manual for Repeater MR801B Power Control module figure 4-2 Cable configuration and installation position 4.3 Modem The Repeater can be equipped with a modem for the operation of the Repeater via modem connection. This allows the operator to change settings and querry information of the Repeater remotly. - Page 33 User’s manual for Repeater MR801B Power The batteries are protected from deep discharge by use of a low voltage disconnect circuit. A local switch is provided to disconnect the battery backup system during maintenance to ensure that all circuits are voltage-free. The switch is located on the battery backup module.
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Page 34: Specification
User’s manual for Repeater MR801B Power 5 Specification 5.1 Electrical specification Frequency range Uplink 824-849 MHz; Downlink 869-894 MHz Useable bandwidth 25 MHz in the upper or lower AMPS 800 band Gain 90 dB Gain variation over frequency and temperature* ±2.5 dB (±3.5 dB at extreme temperatures) Gain adjust range 30 dB in 2 dB steps... - Page 35 User’s manual for Repeater MR801B Power BAND AND CHANNEL SPECIFICATIONS Variable Bandwidth Channel CDMA TDMA 3 dB bandwidth 0.1 to 15.0 MHz 1.23 MHz 30 kHz Slope 3 to 30 2 MHz ± 900 kHz ± 60 kHz 30 dB bandwith ±...
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Page 36: Mechanical Specification
User’s manual for Repeater MR801B Power 5.2 Mechanical specification Standard cabinet Max. Height x Width x Depth: 21.1 x 18.2 x 7.9 inches 535 x 462.5 x 200 mm Volume: approximately 45 litres Weight: approximately 103 lbs (47 kg per unit in standard configuration) The illustration of chapter 11.1 provides the dimensions and the view of the layout. -
Page 37: Rf Connections
User’s manual for Repeater MR801B Power See figure 5-1 Screw terminal for mains cable for the position of the two 8 A fuses. figure 5-1 Screw terminal for mains cable 5.4.2 RF connections There are two 7/16 female antenna connectors at the outside of the housing accessible on the connector panel (see figure 5-2 Connector panel layout). - Page 38 User’s manual for Repeater MR801B Power The 7/16 TX-downlink connector should be connected to the antenna system for the communication with the mobile units. Mobile The 7/16 TX-uplink connector should be connected to the antenna system for the communication with the Base Transceiver Station. As an option a 7/16 - N adapter is available.
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Page 39: External Rf Output
User’s manual for Repeater MR801B Power 5.5 External RF output An external output in the downlink path is available at the outside of the housing as an option. This enables the connection of an integrated modem to an additional antenna. The connector type is N female. -
Page 40: Installation
User’s manual for Repeater MR801B Power 6 Installation TX Downlink TX Uplink RX Uplink RX Downlink to/from to/from Mobile Stations Repeater System TX Downlink TX Uplink RX Uplink RX Downlink Mobile figure 6-1 System description M0067A0A.doc Id.-No 151111 Page 40 02-JUNE-99... -
Page 41: Mechanical Installation
User’s manual for Repeater MR801B Power 6.1 Mechanical installation Note: Due to power dissipation the Repeater may heat up the air volume inside the cabinet and reach a very high temperature. Therefore it is necessary to mount the Repeater in the vertical plane to a wall or a mast without additional enclosure to provide sufficient ventilation. - Page 42 User’s manual for Repeater MR801B Power Mounting procedure: Dismount the mounting brackets first. They are screwed tight to the housing with four socket head cap screws M8.0x16 (see figure below) and two tire bolts. mounting brackets figure 6-2 Wall mounting brackets Use the wall mounting sheet to mark the position of the drilling holes.
- Page 43 User’s manual for Repeater MR801B Power figure 6-3 Clearance distance M0067A0A.doc Id.-No 151111 Page 43 02-JUNE-99...
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Page 44: Electrical Installation
User’s manual for Repeater MR801B Power 6.2 Electrical installation Note: ESD precautions have to be observed! Before working inside the cabinet use the available grounding system to connect ESD protection measures. The electrical installation has to be performed in accordance with the safety regulations of the local authorities. -
Page 45: Power Connection
User’s manual for Repeater MR801B Power 6.2.2 Power connection Before connecting electrical power to the Repeater grounding has to be performed. The Repeater is equipped with a firmly connected power cord 3 x 1.5 mm². Due to safety reasons the power supply lead of the Repeater has to be protected with two 8 A fuses, type MT. In the event the length of the power cord should not be sufficient it can be replaced by a longer cable. -
Page 46: Setting To Work
User’s manual for Repeater MR801B Power 7 Setting to work 7.1 Preparation Note: It is not allowed to operate the Repeater without termination of the antenna connections! The termination can be performed by the antenna connection as well as a dummy load or the 50-Ohm-terminated connection of a measuring instrument. -
Page 47: Setting Of Operational Parameters
User’s manual for Repeater MR801B Power 7.2 Setting of operational parameters Attenuation of the Repeater can be set manually by means of rotary switches, frequency can be set locally or remotely. There are three different possibilities to set the operational parameters: -manual settings by means of rotary switches -local control via RS232 interface and PC -remote control via modem... - Page 48 User’s manual for Repeater MR801B Power 7.2.1.1 Setting of the attenuation The gain can be set by introducing attenuation into the amplifier chain. By using a rotary switch the attenuation can be adjusted locally in the range from 0 dB to 30 dB maximum in steps of 2 dB.
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Page 49: Settings Via Personal Computer As Terminal
User’s manual for Repeater MR801B Power figure 7-4 Rotary switches and label Note: Gain can be changed independently for the uplink and downlink path. DIP-Switch configuration: DIP-Switch OFF (default values) manual auto remote mode local mode n.c. n.c. software download software download manually controlled controlled by software... - Page 50 User’s manual for Repeater MR801B Power DIP-Switch 2 figure 7-6 DIP-switch 2 for local mode A VT100 terminal or a PC with VT100 emulation can be connected to the control module SM2009 by a standard RS232 cable, if necessary in connection with an adapter 9 to 25. Cable Connections PC Control Module SM2009 9 contact SUB - D- Connector...
- Page 51 User’s manual for Repeater MR801B Power The following communication mode between control module and VT100 is set initially. 9600 baud - 8 bit - no parity -1 stopbit These settings can only be changed after connection of the terminal. If all wanted settings have been initialized and a modem has to be used it will be recommended to check whether the settings comply with the capabilities of the modem and the line.
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Page 52: Settings Via Modem
User’s manual for Repeater MR801B Power 7.2.3 Settings via modem The Repeater can be equipped with a modem. If so, the repeater will be delivered with a preset init string. This init string was used for internal tests. In case no connection can be established check the local conditions and change the init string if necessary. -
Page 53: Trouble Shooting
User’s manual for Repeater MR801B Power 8 Trouble shooting All Repeaters are factory-set to „Power down disabled“ status, this means the channel group is active. To switch off the channel group use the software command „PWRDOWN enabled“. (You find a detailed description in the software manual.) 8.1 Error indication l = LED on = LED off... -
Page 54: Alarm Monitoring With The Status Hist Command
User’s manual for Repeater MR801B Power 8.3 Alarm monitoring with the STATUS HIST command Check alarms with ‘status hist‘ command. 1. If a hardware module is damaged, replace corresponding hardware module. 2. Minor alarms with no influence on the system can be cancelled by confirming the alarm with the ‘alarmackn’... -
Page 55: Maintenance
User’s manual for Repeater MR801B Power Maintenance 9.1 General Note: The Repeater does not require preventative maintenance measures. It is only recommended to replace the RAM/RTC battery after three years usage as a prophylactic measure. The nominal lifetime of these batteries is five years under normal environmental conditions. -
Page 56: Replacement Of The Power Supply Fuse
User’s manual for Repeater MR801B Power figure 9-2 Fuse terminal 9.3 Replacement of the power supply fuse Each power supply is protected with a fuse 10 A / 35 V. The fuse is mounted outside of the power supply housing. Note: Use only fuses of the same type and the same rating when replacing! figure 9-3 Position of power supply fuse... -
Page 57: Replacement Of The Ram / Rtc Battery
User’s manual for Repeater MR801B Power Remove the clamping profile at the outside of the housing by pulling at the mains cable. Open the PG9 threaded joint with a spanner size 17. Inside the housing remove the plastic cable clip by unscrewing the tallow-drop screw. Then use a small screwdriver and open the screws of the fuse terminal. -
Page 58: Replacement Of The Dummy Battery Backup Module
User’s manual for Repeater MR801B Power dummy battery backup module RAM/RTC battery figure 9-4 Position of RAM/RTC battery Note: Before replacing the battery, disconnect the Repeater from mains. Observe the rules for changing Lithium batteries. Wrong connection or treatment may result in bursting of the battery and dissemination of hazardous substances. -
Page 59: Replacement Of Duplexers
User’s manual for Repeater MR801B Power dummy battery backup module figure 9-5 Position of dummy battery backup module 9.7 Replacement of duplexers This description is valid for the one channel configuration of the Repeater only. For different configurations refer to the assembly guide for the Repeater. Remove the semi-rigid cables which connect the UL output and the DL output with the feed forward amplifier by loosing the SMA connectors. -
Page 60: Replacement Of Rf Modules
User’s manual for Repeater MR801B Power The cables have to be connected like shown below. figure 9-6 Cable configuration of the duplexers Unscrew the four counter sunk screws M3 at the connector panel of the Repeater. See figure 9-7 Connector panel layout. figure 9-7 Connector panel layout 9.8 Replacement of RF modules To remove the RF modules, disconnect the SMA connectors by means of a torque wrench. - Page 61 User’s manual for Repeater MR801B Power Unscrew six socket head cap screws by means of a hex socket key. Pull carefully by means of the mounting strap, fixed on the module (see figure 9-8 Top view of an RF module) and take off the modules. Socket head cap screws Mounting...
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Page 62: Replacement Of The Control Module Sm 2009
User’s manual for Repeater MR801B Power For the exchange of an RF module or the installation of a new RF module, the slave address of the synthesizer has to be set. This can be done by means Hex-coded rotary switch Hex-coded rotary switch of hex-coded rotary switches mounted for DL... -
Page 63: Replacement Of Power Supplies
User’s manual for Repeater MR801B Power Take off the whole control module completely with mounting plate by unscrewing four tallow drop screws M4. For mounting proceed in reverse order. Position of the control module in the Repeater is illustrated in figure 9-11 Position of control module. -
Page 64: Replacement Of Active Combiner Modules
User’s manual for Repeater MR801B Power The power supply is fixed to the Repeater housing by means of two special nuts M4. After loosen the screws the power supply can be removed. To open these screws a special key with a spherical head is required. -
Page 65: Replacement Of Feed Forward Amplifiers
User’s manual for Repeater MR801B Power counter sunk screws figure 9-14 Position of counter sunk screws on active combiner The cabling of the active combiners depends on the configuration of the Repeater. For correct connections see assembly guide for the channel modification kits 9.12 Replacement of feed forward amplifiers There is one amplifier mounted on each side of the Repeater. - Page 66 User’s manual for Repeater MR801B Power Reset board figure 9-15 Position of the feed forward amplifier reset board Remove the ready made cable which is plugged to the 15 pole SUB-D connector of the reset board. Unscrew the screw clip first. The SMA connectors can be removed only after dismounting the amplifier.
- Page 67 User’s manual for Repeater MR801B Power figure 9-16 Position of feed forward amplifiers (4-channel Repeater) M0067A0A.doc Id.-No 151111 Page 67 02-JUNE-99...
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Page 68: Spare Parts List
User’s manual for Repeater MR801B Power 10 Spare parts list The following list contains all parts available for the MR801B Power . The configuration of the delivered unit meets the requirements of the customer and can differ depending on the state of delivery. - Page 69 User’s manual for Repeater MR801B Power Ready-made cable DC 149648 Ready-made cable DC female headers 6 contacts 150753 4 External Alarms option Kit 147710 Adapter 7/16 male N female 112425 RF Gland / SMA to N 150615 Mother board 147024 Manual for MR801B Power 151111 Assembly guide for modification kits...
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Page 70: Appendix
User’s manual for Repeater MR801B Power 11 Appendix 11.1 Installation drawing of the Repeater figure 11-1 Installation drawing of the Repeater M0067A0A.doc Id.-No 151111 Page 70 02-JUNE-99... -
Page 71: Top View Of The Repeater (Left Side , One Channel Configuration)
User’s manual for Repeater MR801B Power 11.2 Top view of the Repeater (left side , one channel configuration) figure 11-2 Top view of the Repeater (left side, one channel configuration) M0067A0A.doc Id.-No 151111 Page 71 02-JUNE-99... -
Page 72: Top View Of The Repeater (Right Side, One Channel Configuration)
User’s manual for Repeater MR801B Power 11.3 Top view of the Repeater (right side, one channel configuration) figure 11-3 Top view of the Repeater (right side, one channel configuration) M0067A0A.doc Id.-No 151111 Page 72 02-JUNE-99... -
Page 73: One Channel Configuration - Cabling And Block Diagram
User’s manual for Repeater MR801B Power 11.4 One channel configuration – cabling and block diagram figure 11-4 Cabling of one channel Repeater M0067A0A.doc Id.-No 151111 Page 73 02-JUNE-99... - Page 74 User’s manual for Repeater MR801B Power figure 11-5 Block diagram of one channel Repeater M0067A0A.doc Id.-No 151111 Page 74 02-JUNE-99...
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Page 75: Index
User’s manual for Repeater MR801B Power 12 Index Abbreviations 8 Feed forward amplifier 22 Active combiner 20, 64 Address of MIKOM 11 Alarm monitoring 54 Alarms Gain Acknowledgement of 26 Local settings 23, 48 External alarms 30 Setting via PC 49 Handling of 26 Grounding 44 Indication of 24... - Page 76 User’s manual for Repeater MR801B Power To set the gain 48 Power supply 21 Replacement of 64 Setting of operational parameters 47 Setting to work 46 Severity levels 28 RAM / RTC battery 57 Remote control 23 RF module 60 Test probes 20 Rotary switch Trouble shooting 53...
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