Next Generation Signal Enhancement RF / SBR Series OPERATION & INSTALLATION MANUAL R4 (Band Selective) Repeater R4-40-S8 for SMR800 Band Outdoor Application/FCC ID:S3CR4-40-S8 June 2007 Proprietary Information The information contained herein is proprietary to Shyam Telecom Limited. Unauthorized access, copy and replication are prohibited.
Next Generation Signal Enhancement Contents 1. Document History.......................................................................................... 3 2. Disclaimer ...................................................................................................... 3 3. Safety Instructions and Warnings................................................................ 3 3.1. Personnel Safety ............................................................................... 3 3.2. Equipment Safety ........
Next Generation Signal Enhancement 1. Document History Document Document Document Author Edited Number Name date by As per code wizard document Revision 2 R4 Band Selective Repeater Approved by Revision June 2007 Revised Section Date/Sign 2. Disclaimer Every attempt has been made to make this material complete, accurate, and up-to-date.
Next Generation Signal Enhancement CAUTION Calls attention to a procedure or practice which, if not followed, may result in personal injury, damage to the system or damage to individual components. Do not perform any procedure preceded by a CAUTION until described conditions are fully understood and met. 3.3. Electrostatic Sensitivity CAUTION ESD = ELECTROSTATIC DISCHARGE SENSITIVE DEVICE Observe electrostatic precautionary procedures.
Next Generation Signal Enhancement WARNING! This equipment complies with FCC & IC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be colocated or operating in conjunction with any other antenna or transmitter. The unit with server antenna must be installed to provide minimum 2.5 m separation distance between the server antenna and the body of user or near by person.
Next Generation Signal Enhancement 4. Introduction 4.1. Purpose The purpose of this document is to describe the electrical and mechanical specifications, operation and maintenance of the R4 Band Selective Repeater. 4.2. Scope This document is the product description of the Shyam R4 Band Selective Repeater for outdoor application. 4.3.
Next Generation Signal Enhancement 4.4. References [1] ETS 300 086. Radio Equipment and Systems Land mobile service Technical characteristics and test conditions for radio equipment with an internal or external RF connector intended primarily for analogue speech. [2] ETS 300 609-4. Digital cellular telecommunications system (phase 2): Base Station Systems (BSS) equipment specification: Part 4: Repeaters.
Next Generation Signal Enhancement 5. Functional Description Of R4 Band Selective Repeater 5.1. General Description The R4 Band Selective Repeater System is designed to provide outdoor coverage and can handle signals up to two sub bands in any one of the service bands, used around the World by various service operators. It provides highly selective amplification in the pre-set band. The details of operating service frequency bands are given below: S.NO.
Next Generation Signal Enhancement The repeater consists of the following modules/units: • LNA • Converter modules • Power amplifiers • Power supply modules • Duplexer filters for transmit/receive directions • Supervisory module • A metallic case houses the repeater. Arrangement is made for heat dissipation especially for amplifiers, which generate more heat. The choice of suitable metal as the case material gives a lightweight design with good heat conduction and waterproof protection.
Next Generation Signal Enhancement Figure 2: Outdoor Application in Rural Area All Rights Reserved Shyam Telecom Limited Page 9/32
Next Generation Signal Enhancement 6. To Get started-Basic Software Control Of the Repeater 6.1. General The repeater is equipped with a supervisory module that allows the monitoring and control of various parameters such as RF power, attenuation, temperature, status of door and alarm conditions etc.
Next Generation Signal Enhancement Figure 3: Login Repeater II) CONFIGURATION (Figure 4) Configuring repeater means setting the repeater parameters for operation as per the requirement at site. The configuration is carried out after the physical installation is completed. Click on the command bar to display the configuration and monitoring window, which allows access to all the configurable repeater parameters. User can login for configuration & monitoring of repeater parameters.
Next Generation Signal Enhancement iv. Output Power: Maximum Output Power limits in UL & DL paths are set. A “PA Power high” alarm will be generated when PA power exceeds the upper limit. Figure 4: Configuration Window v. RSSI Alarm: Lower and Upper RSSI Limits in DL are set in the factory. A RSSI High alarm will be generated when RSSI exceeds the set upper limit, and a RSSI Low alarm will be generated when RSSI goes below the set lower limit. Upper range can be set from -35 to 55dBm.
Next Generation Signal Enhancement Figure 5: Monitoring Window III) MONITORING (Figure 5) In this window, the status of the system is monitored for the following parameters/conditions: STATUS S.NO. Parameters/Conditions Remarks The specified frequency bands in 1. Start and Stop Frequency of DL & UL are displayed. sub bands, equipped. Prevailing DL signal level is indicated. Prevailing UL signal level is indicated. Indicates attenuation inserted in the system in DL path. 2. RSSI (DL) for the Band 3.
Next Generation Signal Enhancement 10. APC (DL) 11. APC (UL) 12. System Temperature 13. Power supply 14. Converters ON/OFF The APC action in the DL path is indicated. The APC action in the UL path is indicated. Prevailing system temperature is indicated. Values of derived voltages are displayed, It indicates the relevant information about equipped converters. IV) ALARMS (Figure 5) Details of alarms displayed are given below: S.NO. Alarm Indication 1.
Next Generation Signal Enhancement a. LOCAL CONNECTION In this type of connection, user computer COM Port and repeater’s USB port are connected directly using cable. Sequence is as under: • Click the “COMM.” on the command bar to display the COMMUNICATION window. Select the Connection Type as “LOCAL” • • Select the computer’s Comm. Port where the repeater is connected. • Click “OK”. b.
Next Generation Signal Enhancement Figure 7: Communication Window VI) Instant Alarms by SMS (Figure 8) The provision exists in the system for getting the alarm information through “Instant Alarms by SMS” which is carried out by Wireless Modem.
Next Generation Signal Enhancement Figure 8: Instant Alarms by SMS Figure 9: Security Settings All Rights Reserved Shyam Telecom Limited Page 18/32
Next Generation Signal Enhancement a. DONOR Antenna Donor antenna of appropriate bandwidth & gain interfaces the BTS on one side and repeater system on other side through RF cable. Figure 11: Donor Antenna (Patch Panel) It intercepts signals from the base station and switch electromagnetic waves into RF signals in the DL and vice versa in the UL. The antenna with more than 10-12 dB gain transfers intercepted signals to the repeater and transmits uplink signals amplified by the repeater. b.
Next Generation Signal Enhancement converted to IF in frequency mixer with frequency fed from LO. The signals are passed through sharply tuned filters. Number of converters equipped, shall depend on the number of sub bands provisioned in the system. In case two sub bands are equipped, total number of converters shall be four i.e. two in the DL & two in the UL. e. Power Amplifier It is the core module of repeater. It includes driver stage and final stage.
Next Generation Signal Enhancement 7. R4 Repeater Specifications 7.1. Electrical Specifications-RF S.NO. 1. Specified limits/Remarks 851 to 869 MHz 4. Parameter Frequency band in DL path. Frequency band in UL path. Number of RF Sub bands RF composite power 5. Spurious Emission 6.
Next Generation Signal Enhancement 7.5. Environmental Specification Conditions Specification -35oC to +550C (-310F to +1310F) Operating Temperature Storage Temperature Enclosure -300C to +750C (-220F to +1670F) IP-65 7.6.
Next Generation Signal Enhancement 8. Installation 8.1. Preparation Sheet- Pre Installation 1. General Application: Outdoor Service Band: Frequency Band DL- 851 to 869 MHz Frequency Band UL- 806 to 824 MHz Number Of Sub Bands: One with full band width 2. Technical requirements S.NO. 1. 2. 3. 4. 5. 7. 8. 9. 10. 11. 12.
Next Generation Signal Enhancement 8.2. Engineering Consideration a. Site Selection Site selection is one of the most critical decisions affecting the overall performance of the system. A repeater must be located where it can receive the maximum signal from the donor site in order to maximize the repeater’s output and performance, a signal strength greater than or equal to -75dBm is desired.
Next Generation Signal Enhancement • The beam width for SERVER antenna is 60 degree to 120 degree. There should be adequate vertical & horizontal separation between the DONOR & SERVER antennas to avoid interference and noise.
Next Generation Signal Enhancement c) Overlapping Coverage Ideally, the repeater system will be engineered with minimal overlapping coverage between the donor base station and the repeater. However, the mobile users will occasionally receive signals from both the donor and the repeater at similar levels. This situation is comparable to a mobile receiving multiple signals at varying times due to multi-path propagation. The R4 repeater contributes a maximum signal delay of 5.5 microseconds in each direction.
Next Generation Signal Enhancement • • • • RF cable routed from DONOR antenna is connected at the BTS port as indicated. RF cable routed to SERVER antenna is connected at TX/RX port for signal distribution. For energizing the system, the cable from AC mains is connected at AC mains port, range 100-240 V. USB port is provided for carrying out configuration and monitoring. Important: Grounding of the unit has to be ensured before extending the power to the repeater system.
Next Generation Signal Enhancement b. Reverse Gain Setting For reverse gain setting, a 31 dB variable attenuator is provided; the required value can be inserted for the desired gain. The gain is set to such a value so as to cause minimum interference at the base station but high enough to ensure a strong signal. 8.6. Commissioning System Note:-Repeater should not be connected to Power without termination of the antenna connection.
Next Generation Signal Enhancement 13. Feedback regarding performance of the system must be obtained from the user. 8.8. Checklist – Post Installation Before the system is made over for traffic, points as indicated in the checklist may be verified for trouble free performance. Installation & Repeater Set Up Service Band: Frequency Band (DL): 851 to 869 MHz Frequency Band (UL): 806 to 824 MHz A. Repeater Installation S.NO. 1. 2. 3. 4. 5. 6. 7.
Next Generation Signal Enhancement 9. System Maintenance 9.1. General The system normally operates without any operator intervention or maintenance. If, in the unlikely event of a unit failure, the field replaceable units (antenna unit, cables) should be checked for faults and the system restored. A failed unit can be removed and replaced with a spare while the rest of the system (other repeaters) is still operating.
Next Generation Signal Enhancement For Technical Support, please contact at any of the following addresses: For Americas Shyam Telecom Inc. 6, KILMER ROAD, SUIT D, EDISON, New Jersy-08817 (USA) Email: info@shyamtelecom.com For Europe Shyam Telecom GmbH. Frohsinnstrasse 16, 63739 Aschaffenburg, Germany Tel: + 49-6021-45901-0 Fax: + 49-6021-45901-29 Email: service@shyamtelecom.com For ASEAN & Others Shyam Telecom Ltd.