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Avitec GSM CSR904 User Operation And Maintenance Manual

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CSR904 Repeater
User, Operation and Maintenance Manual

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Summary of Contents for Avitec GSM CSR904

  • Page 1 CSR904 Repeater User, Operation and Maintenance Manual...

  • Page 2: Table Of Contents

    7.1.3. Minimum Channel Spacing 7.2. Electrical Specification RF 7.3. Electrical Specification Power Requirements 7.4. Mechanical Specification 7.5 Block Diagram CSR904 7.6 Environmental Specification 7.7 Other Specifications Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 3 8.6 LED indicators 9. System Maintenance 9.1. General 9.2. Preventative Maintenance 10. Frequency and Channel List 12 Connecting the External Alarms 13. Quick Installation Guide-CSR 904 Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 4: Document History

    2. Disclaimer Every attempt has been made to make this material complete, accurate, and up-to- date. Users are cautioned, however, that Avitec AB reserves the right to make changes without notice and shall not be responsible for any damages, including consequential, caused by reliance on the material presented, including, but not limited to, typographical, arithmetical, or listing errors.
  • Page 5 CSR 904 Repeater Manual Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 6: Safety Instructions And Warnings

    Avitec AB 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.

  • Page 7: Electrostatic Sensitivity

    RF input connector, and through the AC connector pins. When unpacking and otherwise handling the Repeater, follow ESD precautionary procedures including use of grounded wrist straps, grounded workbench surfaces, and grounded floor mats. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 8: Introduction

    The purpose of this document is to describe the electrical and mechanical specifications, operation and maintenance of the CSR 904 Repeater. 4.2. Scope This document is the product description for the Avitec Repeater CSR 904. 4.3. Definitions Automatic Limit Control...

  • Page 9: References

    Radio Equipment and Systems (RES); Electro-Magnetic Compatibility (EMC) for European Digital Cellular Telecommunications systems. Base Station Radio and ancillary equipment and Repeaters meeting phase 2 GSM requirements. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 10: General

    • Power Amplifier Modules • Power Supply Module • Duplex Filter Module • Control Module • Reference Generator • Low Noise Amplifier Module • Combiners Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 11 Internal View of Repeater Figure 1 Battery Splitter(x2) Power Supply Modem Combiner (x2) Amplifier (x8) Control Module Mains RFI filter Channel Modules (x8) Cable Protector Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 12 CSR 904 Repeater Manual Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 13 Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 14: To Get Started - Basic Software Control Of The Repeater14

    Windows 95/98/NT4/Windows 2000. The terminal parameters should be set as follows: Baud rate 9600, Parity None, 8 Data bits, 1 Stop bit, and “no flow control”. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 15 Wait for 10-20 seconds and the press the ‘Enter’ key. This brings up the AVITEC Login screen, which asks for the Username and Password. Different user accounts may have different authorities. The...

  • Page 16: Commands Necessary To Set Up Remote Access

    SMA connector from the box and connect it to a small whip antenna. One can now remotely log in to the repeater by dialling the DATA CALL number of the SIM card. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 17 CSR 904 Repeater Manual Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 18: Commands To Control Rf Parameters

    2, zz in channel 3 and ww in channel 4 NOTE: Attenuation is set in 2 dB steps from 0 to 30dB. Ex: SET ATU 1 22 2 22 Attenuation Table Gain dB Attenuation Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 19 Valid ALC levels are 33, 30, 27 and 0. Setting to 0 means that the output power is switched off. Example: SET LVU 1 30 2 30 3 0 4 0 Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 20: Functional Description Of Repeater Modules

    Examples of monitored parameters are: Status of synthesizers Amplifier Chain Gain Alarm BCCH alarm Temperature alarm Etc…. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 21: Csr 904 Repeater Specification

    7.1.2. Antenna Isolation Avitec recommends that the isolation between the donor and server antennas is15 dB greater than the maximum gain in the repeater (85 dB gain => 100dB isolation). This is to make sure that feedback problems are minimised.

  • Page 22: Electrical Specification Rf

    Low logic level: 0 VDC 7.3. Electrical Specification Power Requirements 200 - 260 VAC, 50 Hz +/-2 Hz, < 200 W or 48Vdc option available on request. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 23: Mechanical Specification

    In connecting panel, threaded M6 size bolt Connection panel Protected against unauthorized access Color Grey (painted) ≤ M8 screws Anchor screws Cooling External convection (no ventilation slots or fans) Figure 3 Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 24: Block Diagram Csr904

    CHANNEL 1 Power Amplifier UL Channelizer UL CHANNEL 2 Power Amplifier UL Channelizer UL CHANNEL 3 UPLINK Power Amplifier UL Channelizer UL CHANNEL 4 Figure 4 Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

  • Page 25: Environmental Specification

    40 050, designed for external mounting Storage Class1.2 conforms to ETS 3000 19-1-1 7.7 Other Specifications MTBF >50,000hrs ETS 300 342-3 Electrical Safety EN 60 950 Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 26 Four quick commands are available with the function keys when using the Terminal Mode: F1: help menu F2: shows a list with the last ten entered commands F3: status screen F4: traffic data. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 27 However, the power supply of the failed repeater should be isolated from AC mains and DC power before any module is replaced. 9.2. Preventative Maintenance The CSR 904 repeater does not require any preventative maintenance. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 28 959,20 895,80 940,80 902,00 947,00 908,20 953,20 914,40 959,40 896,00 941,00 902,20 947,20 908,40 953,40 914,60 959,60 896,20 941,20 902,40 947,40 908,60 953,60 914,80 959,80 Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 29 The external alarms shall have a voltage between 12 and 24 VDC. Terminals (3,4), (5,6), (7,8) and (9,10) shall be used. Please refer to section 8.5 on how to configure the external alarms. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 30 Channel selective means that a single GSM carrier is filtered amplified and retransmitted per channel module in the repeater. The maximum output power per carrier in Avitec’s CSR 904 channel selective repeaters is 2 Watts (33Bm) The channel selective repeater systems manufactured by Avitec have been designed for flexibility and ease of installation.
  • Page 31 CSR 904 Repeater Manual Avitec has 3 basic units available for the GSM 900 system. • CSR902 (Up to two carriers, 900MHz) • CSR904 (Up to four carriers, 900MHz) • CSF902 (Up to two carriers, Fibre optic link, 900MHz) Site Selection The repeater site shall be located where the BTS signal strength is at least –67dB.
  • Page 32 Isolation between the server and pick-up antennas can be achieved using one of several different methods or a combination of methods. Vertical Antenna separation. Grounded metal shield between antennas. Horizontal Antenna Separation Figure 2. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 33 A mast with two antennas is however more difficult to deal with. In this case metal screening with wire mesh or similar screening material needs to be used. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 34 CSR 904 Repeater Manual Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 35 Connect one antenna cable to the signal generator and one to the spectrum analyser. Measure the signal strength and subtract the figure gathered during the first measurement. The difference is the antenna isolation. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 36 RF characteristics. Remember: The antenna cables or 50Ω terminators must be connected to the repeater before mains power is switched on. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 37 CSR 904 Repeater Manual Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 38 Server Antenna Coaxial Cable typically 1/2" or more. Repeater CSR904 7/16 7/16 Coaxial Cable Coaxial Cable to to Pick-up Server Antenna Antenna Power Cable Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 39 CSR 904 Repeater Manual Figure 3. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 40 This helps attenuate the part of the pulse that breaches the first layer of protection. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...
  • Page 41 Getting the Repeater started Once the repeaters, their antennas and cables have all been mounted and connected it is time to start testing the system. Avitec’s Remote Maintenance Console (RMC) is an essential tool in this process. In order to use the RMC you will need the following: •...
  • Page 42 CSR 904 Repeater Manual The power limit menu limits the output power to the figure chosen or the channel can be switched off completely by clicking on off. Document Number/Version © 2001 AVITEC AB CSR904-UM Page of 35 User, Operation and Maintenance Manual...

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