Next Generation Signal Enhancement SBR/RF Series OPERATION AND INSTALLATION MANUAL R-20 Single Band Repeater (Indoor Coverage) June 2007 Proprietary Information The information contained herein is proprietary to Shyam Telecom Limited. Unauthorized access, copy and replication are prohibited. This document must not be copied in whole or part by any means or it shall not be disclosed or divulged to any third Party without the prior written consent of Shyam Telecom Limited.
Next Generation Signal Enhancement Contents 1. Document History ................................................................................4 2. Disclaimer............................................................................................4 3. Safety Instructions and Warnings........................................................4 3.1. Personnel Safety ......................................................................................... 4 3.2. Equipment Safety .............................
Next Generation Signal Enhancement 8.7. Dos & Don’t Dos....................................................................................... 35 8.8. LED Display On R-20 Unit ........................................................................ 35 8.9. Checklist – Post Installation ...................................................................... 36 9. System Maintenance .........................................................................38 9.1. General.......................................
Next Generation Signal Enhancement 1. Document History Document Document Document Author Edited Number Name date by As per R20 code Repeater wizard document Revision 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 following general safety precautions and with specific precautions described elsewhere in this manual violates the safety standards of the design, manufacture, and intended use of this product. Shyam Telecom Limited assumes no liability for the customer's failure to comply with these precautions. This entire manual should be read and understood before operating or maintaining the repeater system.
Next Generation Signal Enhancement 3.3. Electrostatic Sensitivity CAUTION ESD = ELECTROSTATIC DISCHARGE SENSITIVE DEVICE Observe electrostatic precautionary procedures. Semiconductor transmitters and receivers provide highly reliable performance when operated in conformity with the intentions of their design. However, a semiconductor may be damaged by an electrostatic charge inadvertently imposed by careless handling.
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 R20 Repeater for indoor application. 4.2. Scope This document is the product description of the Shyam R20 Repeater for indoor 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 R20 Repeater 5.1. General Description The R20 Repeater System is designed to provide indoor coverage and can handle signals in a pre set single sub band 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.
Next Generation Signal Enhancement design with good heat conduction. It is not waterproof and therefore, should be installed at indoor locations only. Ceiling Antenna R20 Figure 1: Indoor Coverage (Typical Application) 5.2. Typical In-Building Coverage The R20 repeater is designed to provide optimal coverage over an area of approximately 1,000 to 2000 sq. meters (10,000 to 20,000Sq ft.).
Next Generation Signal Enhancement • Installed total cable and connector loss of approximately 5 dB (125feet of typical 1/4” coaxial foam cable). • Interior building structure consists of typical vertical stud and drywall composition. • Isolation between the donor and server antennas should be 15 dB more than the gain of the repeater.
Next Generation Signal Enhancement Ceiling Antenna R20 unit Figure 3: Application of R20 in a Train All Rights Reserved Shyam Telecom Limited Page 12/42
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 4: Login Repeater Administrator can limit the system access authority of the SUPERVISOR. II) Configuration Configuration means setting different repeater parameters for proper operation. Configuration of Shyam repeaters can be performed locally with a laptop / PC connected to the repeater by means of local USB serial interface cable. Clicking the CONFIGURE on the command bar, displays configure window.
Next Generation Signal Enhancement Figure 5: Repeater ID Settings c) Sub Band ON/OFF Setting (Figure 6) The sub band equipped can be configured as ON others shall remain OFF. d) Frequency Settings (Figure 7) The frequency bandwidth of the sub band equipped is defined for UL & DL paths. e) PA ON/OFF Settings (Figure 8) The PA can be set in ON or OFF condition for the purpose of testing & maintenance. f) RSSI Limits (Figure 9) RSSI limits in the DL & UL paths are set.
Next Generation Signal Enhancement Figure 6: Sub Band ON/OFF settings Figure 7: Frequency Settings All Rights Reserved Shyam Telecom Limited Page 16/42
Next Generation Signal Enhancement Figure 8: PA ON/OFF Settings III) Monitoring (Refer Figure11) Parameter Remarks Attenuation Displays Attenuation inserted in UL & DL in the system. Output Power Prevailing PA output power in UL & DL paths. RSSI DL Prevailing RSSI DL signal level. RSSI UL Prevailing RSSI UL signal level. APC DL & UL Effective APC value prevailing in the system. Location Serial Number Repeater ID 7.
Next Generation Signal Enhancement Alarms Displays if there is any alarm viz. critical, major or minor. Details can be viewed by clicking at “DETAIL ALARM”.
Next Generation Signal Enhancement IV) Alarms (Refer Figure 12) Observation Remarks Failure of synthesizer in DL is indicated. DL synthesizer fail Failure of synthesizer in UL is indicated. UL synthesizer fail Indication draws the attention about the off PA Off (Auto) DL condition of PA in DL. Indication draws the attention about the off PA Off (Auto) UL condition of PA in UL. PA Off (Manual) DL Indication draws the attention about the off condition of PA in DL.
Next Generation Signal Enhancement Figure 11: Status Monitoring Window Figure 12: Alarm Display Window All Rights Reserved Shyam Telecom Limited Page 20/42
Next Generation Signal Enhancement Figure 13: Communication setting V) Communication (Refer Figure 13) In COMMUNICATION window user can select serial communication port of the computer and type of connection between repeater and computer. There are two types of connections viz. Local and Remote a) LOCAL CONNECTION In this type of connection, user computer COM Port and repeater’s USB port are connected directly using cable. Sequence as indicated below, is followed: • Click the “COMM.
Next Generation Signal Enhancement • Select the Connection Type as “REMOTE”. • Select the computer’s Comm. Port where the wireless Modem is connected. • Click “OK”. • Now click the DIALUP on the command bar to display the DIALUP window. • • Enter / Select the repeater phone number. Click the “DIAL” and wait (maximum 60 seconds) for connection. A message “CONNECTED” will appear on the screen after the GSM Connection is established.
Next Generation Signal Enhancement 6.3. Technical Description of R-20 Repeater The R-20 Repeater system comprises of high power amplifiers with automatic power control and highly selective amplification in both the UL & DL directions. It is incorporated with a Donor antenna (highly directive outdoor antenna) and Server antenna (indoor omni directional antenna), specifically designed for interior configurations.
Next Generation Signal Enhancement b. Duplexer The main function of duplexer is to isolate the uplink frequency from the downlink frequency, i.e. isolate transmit path from receive path. Two duplexer units are provided in the repeater, one in the Donor antenna side and other in the server antenna side. Each duplexer transfers/receives signals from respective antenna for further connectivity to low noise amplifier.
Next Generation Signal Enhancement connecters are installed at spots as per the coverage area requirements.
Next Generation Signal Enhancement 7. R20 Repeater Specifications 7.1. Electrical Specifications-RF S.NO. Parameter 1. Frequency band in DL path. 2. Frequency band in UL path. 3. Number of RF Sub bands 4. RF composite power 5. Spurious Emission 6.
Next Generation Signal Enhancement Housing Grounding Connection Housing Color Cooling Indoor application (aluminum) Bolt Grey Convection 7.5. Environmental Specification Conditions Specification 0 0 -5 C to +55 C (230F to +1310F) Operating Temperature Storage Temperature Enclosure -300C to +750C (-220F to +1670F) In accordance with Indoor application requirement 7.6.
Next Generation Signal Enhancement 8. Installation 8.1. Preparation Sheet- Pre Installation Before the installation commences, particulars of requirement must be compiled in the preparation sheet as indicated below: 1. General Application: Indoor Service Band: Frequency Band DLFrequency Band ULNumber Of Sub band: One Frequency Band DL- UL- 2. Technical requirements S.NO. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
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 width of less than 30 degrees so as to correctly select the donor base station instead of other nearby base stations. • The antennas should have proper frequency band of operation. • Adequate separation is to be ensured from the power lines to avoid damage to the equipment and humans. • Antenna with proper characteristics to maintain adequate isolation to avoid oscillations. Normally, isolation should be 15 dB more than the gain set for the repeater.
Next Generation Signal Enhancement The antenna separation table demonstrates that vertical separation yields better results than horizontal separation. However, when desired isolation cannot be met due to insufficient separation, external shielding can help; for example, mounting the antennas on either side of a rooftop penthouse or using some type of grounded metal screen or wire mesh (so called chicken wire) between antennas.
Next Generation Signal Enhancement 8.3. Installation Tools You will need the following basic tools for installation: a. Standard wrenches/screwdrivers/cable stripper/cable cutter/pliers set for installing the R-20 Unit and antennas. (Refer to the manufacturer’s recommendations for installing the antennas). b. RF coaxial cable connection tools for installing connectors. c. Multi-meter. d. Mobile handset loaded (e.g. Nokia) with Net engineering software to be used for signal level measurement. e.
Next Generation Signal Enhancement be achieved with the help of attenuator provided in the system. The gain setting for Uplink and Downlink path is independent of each other. For example, If repeater has a maximum gain of 70 dB and the required repeater gain is 60 dB, the attenuation of 10 dB is required to be incorporated by inserting attenuator of this value. Note: Repeater gain should be at least 15 dB less than the antenna isolation.
Next Generation Signal Enhancement DC supply port USB port BTS port Figure 16: R20 Repeater ports 8.6. Commissioning 1. Plug the AC/DC power adaptor to the Repeater and switch ON the unit. 2. Once the repeater is ON, the LEDs will not glow under normal condition. 3. The UL Align indication LED and DL align indication LEDs will blink for adjusting the DL gain and UL gain automatically.
Next Generation Signal Enhancement 4. Review the intended coverage area according to the site installation plan. Using a mobile NOKIA handset loaded with NET engineering software and the SIM card of cellular operator, measure and monitor the signal level at various points within and around the perimeter of the coverage area. 8.7. Dos & Don’t Dos 1. The site should be accessible for the maintenance team. 2. Arrangement is to be made to avoid unauthorized access to the repeater. 3.
Next Generation Signal Enhancement Figure 17: Display Details of R-20 • The UL Align LED will blink when system is in Uplink Alignment mode. • The DL Align LED will blink when system is in Downlink Alignment mode. • • SHUT Down LED will Glow when the system goes out of order due to (poor isolation) or excessive input signal. The system will check for the normal state after 30 seconds continuously. If the system senses the right condition it will be ON automatically and start functioning.
Next Generation Signal Enhancement 3. 4. 5. 6. 7. Ensure proper grounding of the unit Cable from donor antenna connected to donor antenna port Cable from server antenna connected to the relevant port in the unit Mains cable connected to the repeater unit Cable protection ensured and outdoor connections are waterproof B. Repeater Set Up S.NO. Point(s) To be Verified 1. 2. 3. 4. 5.
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 may be required to cover the additional area. If R20 unit is found to be defective, please contact our Technical support team. The R20 serial number must be available to establish a return authorization. If replacing any part, Shyam authorized service dealer should replace it and no soldering/ repairing of PCBs should be carried out in the field for reliable service thereafter.
Next Generation Signal Enhancement attenuator may be inserted between the donor antenna and the repeater or reduce the forward path signal using the attenuation control with the likely compromise to the overall coverage within the building.
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, D-63739 Aschaffenburg, Germany Tel: + 49-6021-459010 Fax: + 49-6021-45901-29 Email: service@shyamtelecom.com For ASEAN & Others Shyam Telecom Ltd.