BSR75 TECHNICAL INFORMATION PRODUCT: CODE: BSR75 D198N61_DDS01 VERSION: 01 CLASSIFICATION: REVISION: 01 DATE: General information 17/08/09 Internal document DOCUMENT MAINTENANCE THIS DOCUMENT HAS 21 PAGES EDIT. DATE AUTHOR DESCRIPTION 1.0 14/07/09 Javier Córdova First edition. 1.1 17/08/09 Javier Córdova Changes in emission designators, clause 1.3. DOCUMENT APPROVAL ACTIVITY Prepared Revised Project Manager Approved R&D Director 01.01.00/1 Rev.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 2 of 21 Disclaimer Although every reasonable effort has been made to ensure the accuracy of the information contained herein and any other referred document, this should not be construed as a commitment on the part of Teltronic S.A. Unipersonal, and the liability of Teltronic S.A. Unipersonal for any errors and omissions shall be limited to the correction of such errors and omissions. Teltronic S.A.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 3 of 21 CONTENTS: 1. BSR75 ........................................................................................................................4 1.1. INTRODUCTION ..................................................................................................4 1.2. VIEW AND LOCATION ........................................................................................5 1.3. TECHNICAL CHARACTERISTICS ...........................
CAUTION TO USERS The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This device is approved with emissions having a source-based timeaveraging duty factor not exceeding 50%. Vehicle – Antenna Installation: - Antennas used for this transmitter must not exceed an antenna gain of 3 dBi with a minimum cable loss of 1dB.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 4 of 21 1. BSR75 1.1. INTRODUCTION The BSR75 is a digital RF transceiver with a transmitter output power of 75 W. It is manufactured following a robust mechanical modular design which allows simple and economic maintenance.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 1.2. VIEW AND LOCATION The BSR75 typical location is in a Base Station Site. 01.01.00/1 Rev.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 6 of 21 1.3. TECHNICAL CHARACTERISTICS Functional characteristics: Frequency bands: 380-400, 410-430, 450-470, 806-870 MHz. Transmit offset frequency: 45MHz for 806-870 MHz band; any for other frequency bands. Channel spacing: 6.25 KHz, 12.5 Khz or 25 KHz. Time Division Multiple Access (TDMA): 4 physical channel per carrier. Modulation: /4-DQPSK. Emissions Designators: 20K0D7W, 20K0D7E, 20K0D7D. Data bit rate: 36 Kbits/s.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 7 of 21 Receiver: Receiver Frequency Range: 380 - 400, 410 - 430, 450 - 470, 806 - 825 MHz. Sensitivity: < -115 dBm (0.4 uV). Faded Sensitivity: < -106 dBm. Selectivity: > 45 dB. Co-Channel Rejection: < 19 dB. Spurious response rejection: > 67 dB. Intermodulation response rejection: > 65 dB. Unwanted conducted emissions: < -57 dBm.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 8 of 21 2. BSR75 MODULES BSR75 is formed by the following modules, interconnected through the BSR75 rack back-plane board: RPS75 (Repeater Power Supply) RPA75 (Repeater Power Amplifier) RTX75 (Repeater Transmitter) RRX (Repeater Receiver) BSYNC (BSR75 Synchronism) - OPTIONAL RCPU (Repeater Control Processing Unit) ! CAUTION: Switch the BSR75 off before inserting/removing any of its modules. 01.01.00/1 Rev.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 9 of 21 2.1. RPS75 2.1.1. INTRODUCTION RPS75 (Repeater Power Supply) module provides power supply to the rest of BSR75 modules. This module features an external switch to turn on or off power supply to the BSR75 modules. 2.1.2. VIEW AND LOCATION RPS75 module is inserted into slot 1 of the BSR75 Rack.. 01.01.00/1 Rev.
BSR75 TECHNICAL INFORMATION 2.1.3. Code: D168DDS01 Date: 17/08/09 Page: 10 of 21 TECHNICAL CHARACTERISTICS Functional characteristics: The RPS75 module features an external switch for turning on or off supply of power to the rest of the modules in the BSR75. Electrical characteristics: RPS75 module can supply up to 3 amperes at 13.2-volt output voltage. RPS75 module can supply up to 30 amperes at 26.4-volt output voltage.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 11 of 21 2.2. RPA75 2.2.1. INTRODUCTION The RPA75 module (Repeater Power Amplifier) is the module that amplifies transmitter signal level up to its final output power. 2.2.2. VIEW AND LOCATION The RPA75 module is inserted in slot 2 of the BSR75 Rack. 01.01.00/1 Rev.
BSR75 TECHNICAL INFORMATION 2.2.3. Code: D168DDS01 Date: 17/08/09 Page: 12 of 21 TECHNICAL CHARACTERISTICS Functional characteristics: The RPA75 Module amplifies the signal modulated by the RTX75 module to its final power level. The RPA75 Module informs the RTX75 Module about the power amplifier temperature. The RPA75 Module informs the RTX75 Module about the forward power level and about the reverse power level.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 13 of 21 2.3. RTX75 2.3.1. INTRODUCTION The RTX75 Module (Repeater Transmitter) is the BSR75 transmitter. 2.3.2. VIEW AND LOCATION The RTX75 Module is inserted in slot 3 of the BSR75 Rack. 01.01.00/1 Rev.
BSR75 TECHNICAL INFORMATION 2.3.3. Code: D168DDS01 Date: 17/08/09 Page: 14 of 21 TECHNICAL CHARACTERISTICS Functional characteristics: The RTX75 Module (Repeater Transmitter) generates a low-power signal modulated according to data provided by the RCPU. Electrical characteristics: Output power: +10 dBm (10 mW). Consumption: 15 W. Environmental conditions: Operating Temperature Range: -30ºC to +60ºC (-22ºF to +140ºF). Storage Temperature Range: -40ºC to +85ºC (-40ºF to +185ºF).
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 15 of 21 2.4. RRX 2.4.1. INTRODUCTION The RRX (Repeater Receiver) is the receiver module of the BSR75. 2.4.2. VIEW AND LOCATION The RRX Module is inserted in slot 4 of the BSR75 Rack. 01.01.00/1 Rev.
BSR75 TECHNICAL INFORMATION 2.4.3. Code: D168DDS01 Date: 17/08/09 Page: 16 of 21 TECHNICAL CHARACTERISTICS Functional characteristics: The RRX (Radio Receiver) module performs reception tasks in the BSR75 (Base Station Repeater). To obtain diversity 2, each RRX Module includes two receptors. RRX Modules are managed by the RCPU, which also controls the transmitter module (RTX). Electrical characteristics: Consumption: 10 W.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 17 of 21 2.5. RCPU 2.5.1. INTRODUCTION The RCPU module is in charge of controlling the BSR75. It contains the main microcontroller and the DSPs that manage the RTX75 and RRX modules. The RCPU performs the functions corresponding OSI layers 1 and 2. 2.5.2. VIEW AND LOCATION The RCPU Module is inserted in slot 6 of the BSR75 Rack. 01.01.00/1 Rev.
BSR75 TECHNICAL INFORMATION 2.5.3. Code: D168DDS01 Date: 17/08/09 Page: 18 of 21 TECHNICAL CHARACTERISTICS Functional characteristics: The RCPU (Repeater CPU) controls the rest of the BSR75 modules. The RCPU module contains two DPSs, TXDSP and RXDSP, and their associated circuitry. The TXDSP performs modulation tasks while the RXDSP carries out demodulation tasks. The RCPU module calculates the RSSI level of incoming RX frames. The MPC860 microcontroller in the RCPU detects interferences.
BSR75 TECHNICAL INFORMATION Code: D168DDS01 Date: 17/08/09 Page: 19 of 21 2.6. SYNCHRONISM BOARD 2.6.1. INTRODUCTION This module carries out two very important tasks in the infrastructure: It provides a synchronism signal: It provides an NMEA 0183 V2.01 sequence, consisting of date and time. It also provides a PPS signal (1 pulse per second), retrieved from the GPS as well. This pulse makes it possible to synchronise different Base Station Sites in a network.
BSR75 TECHNICAL INFORMATION 2.6.2. Code: D168DDS01 Date: 17/08/09 Page: 20 of 21 VIEW AND LOCATION The BSYNC or BSYNC GPS board is inserted in slot 5 of the BSR75. BSR 01.01.00/1 Rev.
BSR75 TECHNICAL INFORMATION 2.6.3. Code: D168DDS01 Date: 17/08/09 Page: 21 of 21 TECHNICAL CHARACTERISTICS Functional characteristics: NMEA 0183 V2.01 sequence. 10-MHz clock signal with 0.1-ppm stability. PPS signal (Pulse Per Second). Electrical characteristics: Nominal voltage: 26.4Vdc (21.1-31.7Vdc). Consumption: 15 W.
