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Axell Wireless 60-274701 Fibre Feed Amplifier manual

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Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 1 of 16                   Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier User Handbook  For GETS Global Signalling L.L.C.  AWL Works Order Q122997 AWL Product Part No. 60-274701                           Axell Wireless Limited Head Office: Aerial House, Asheridge Road, Chesham, Buckinghamshire, HP5 2QD, United Kingdom Tel: + 44 (0) 1494 777000         Fax: + 44 (0) 1494 777002 info@axellwireless.com                    www.axellwireless.com
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 2 of 16   Table of Contents   1. Introduction ................................................................................................................................ 3 1.1. Scope and Purpose of Document ........................................................................................ 3 1.2. Limitation of Liability Notice.................................................................................................. 3 2. Safety Considerations................................................................................................................ 4 2.1. Earthing of Equipment ......................................................................................................... 4 2.2. Electric Shock Hazard .......................................................................................................... 4 2.3. RF Radiation Hazard ........................................................................................................... 4 2.4. Lifting and other Health and Safety Recommendations ........................................................ 4 2.5. Chemical Hazard ................................................................................................................. 5 2.6. Laser Safety ........................................................................................................................ 5 2.7. Emergency Contact Numbers .............................................................................................. 5 3. Equipment Overview ................................................................................................................. 6 3.1. List of Major Sub-Components ............................................................................................. 7 3.2. Specification ........................................................................................................................ 8 3.3. Circuit Schematic ................................................................................................................. 9 3.4. Case Front View ................................................................................................................ 10 3.5. Case Rear View ................................................................................................................. 11 3.6. Local Alarm Output Schematic ........................................................................................... 12 Appendix A ........................................................................................................................................ 13 A.1. Glossary of Terms used in this document .......................................................................... 13 A.2. Key to Drawing Symbols used in this document ................................................................. 14 A.4. Waste Electrical and Electronic Equipment (WEEE) Notice ............................................... 15 A.5. Document Amendment Record .......................................................................................... 16
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 3 of 16   1.  Introduction  1.1.  Scope and Purpose of Document  This handbook is for use solely with the equipment identified by the Axell Wireless Limited (AWL) Part Number  shown on the front page. It is  not to be  used  with  any other equipment  unless  specifically authorised by AWL. This is a controlled release document and, as such, becomes a part of the Axell Wireless  Total  Quality  Management  System.  Alterations  and  modification  may  therefore  only  be performed by Axell Wireless.  AWL  recommends  that  the  installer  of  this  equipment  familiarise  themselves  with  the  safety  and installation procedures contained within this document before installation commences.  The purpose of this handbook is to provide the user/maintainer with sufficient information to service and repair the equipment to the level agreed. Maintenance and adjustments to any deeper level must be performed by AWL, normally at the company’s repair facility in Chesham, England.  This handbook has been prepared in accordance with BS 4884, and AWL’s Quality procedures, which maintain  the  company’s  registration  to  BS  EN  ISO  9001:2000  and  to  the  R&TTE  Directive  of  the European  Parliament.  Copies  of  the  relevant  certificates  and  the  company  Quality  Manual  can  be supplied on application. This document fulfils the relevant requirements of Article 6 of the R&TTE Directive.  1.2.  Limitation of Liability Notice  This manual is written for the  use of  technically competent operators/service persons.  No liability is accepted  by  AWL  for  use  or  misuse  of  this  manual,  the  information  contained  therein,  or  the consequences of any actions resulting from the use of the said information, including, but not limited to, descriptive, procedural, typographical, arithmetical, or listing errors.  Furthermore,  AWL  does  not  warrant the  absolute  accuracy  of  the  information  contained  within  this manual, or its completeness, fitness for purpose, or scope.  AWL has a policy of continuous product development and enhancement, and as such, reserves the right to amend, alter, update and generally change the contents, appearance and pertinence of this document without notice.  Unless specified otherwise, all AWL products carry a twelve month warranty from date of shipment. The warranty is expressly on a return-to-base repair or exchange basis and the warranty cover does not extend to on-site repair or complete unit exchange.
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 4 of 16   2.  Safety Considerations  2.1.  Earthing of Equipment  Equipment supplied from the mains must be connected to grounded outlets and earthed in  conformity  with  appropriate  local,  national  and  international  electricity  supply  and safety regulations.    2.2.  Electric Shock Hazard  The  risk  of  electrical  shocks  due  to  faulty  mains  driven  power  supplies  whilst potentially ever present in any electrical equipment, would be minimised by adherence to good installation practice and thorough testing at the following stages:   a)  Original assembly.   b)  Commissioning.       c)  Regular intervals, thereafter.   All test equipment must be in good working order prior to its use. High current power supplies can be dangerous because of the possibility of substantial arcing. Always switch off during disconnection and reconnection.  2.3.  RF Radiation Hazard  RF  radiation,  (especially  at  UHF  frequencies)  arising  from  transmitter  outputs connected to AWL’s equipment, must be considered a safety hazard.  This  condition  might  only  occur  in  the  event  of  cable  disconnection,  or  because  a ‘spare’ output has been left un-terminated. Either of these conditions would impair the system’s  efficiency.  No  investigation  should  be  carried  out  until  all  RF  power  sources  have  been removed.  This  would  always  be  a  wise  precaution,  despite  the  severe  mismatch  between  the impedance  of  an  N  type  connector  at  50Ω,  and  that  of  free  space  at  377Ω,  which  would  severely compromise the efficient radiation of RF power. Radio frequency burns could also be a hazard, if any RF power carrying components were to be carelessly touched!  Antenna  positions should be  chosen  to comply with  requirements  (both local & statutory) regarding exposure  of  personnel  to  RF  radiation.  When  connected  to  an  antenna,  the  unit  is  capable  of producing  RF  field  strengths,  which  may  exceed  guideline  safe  values  especially  if  used  with antennas  having  appreciable  gain.  In  this  regard  the  use  of  directional  antennas  with  backscreens and  a  strict  site  rule  that  personnel  must  remain  behind  the  screen  while  the  RF  power  is  on,  is strongly recommended.  Where  the  equipment  is  used  near  power  lines  or  in  association  with  temporary  masts  not  having lightning protection, the use of a safety earth connected to the case-earthing bolt is strongly advised.  2.4.  Lifting and other Health and Safety Recommendations  Certain  items  of  AWL  equipment  are  heavy  and  care  should  be  taken  when  lifting them  by  hand.    Ensure  that  a  suitable  number  of  personnel,  appropriate  lifting apparatus  and  appropriate  personal  protective  equipment  is  used  especially  when installing  Equipment  above  ground  e.g.  on  a  mast  or  pole  and  manual  handling precautions relevant to items of the weight of the equipment being worked on must be observed at all times when handling, installing or dismounting this equipment.
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 5 of 16   2.5.  Chemical Hazard  Beryllium Oxide, also known as Beryllium Monoxide, or Thermalox™,  is sometimes used in devices within equipment produced by Axell Wireless Ltd. Beryllium oxide dust can  be  toxic  if  inhaled,  leading  to  chronic  respiratory  problems.  It  is  harmless  if ingested or by contact.  Products  that  contain  beryllium  are  load  terminations  (dummy  loads)  and  some  power  amplifiers. These products can be identified by a yellow and black “skull and crossbones” danger symbol (shown above). They are marked as hazardous in line with international regulations, but pose no threat under normal  circumstances.  Only  if  a  component  containing  beryllium  oxide  has  suffered  catastrophic failure, or exploded, will there be any danger of the formation of dust. Any dust that has been created will be contained within the equipment module as long as the module remains sealed. For this reason, any  module  carrying  the  yellow  and  black  danger  sign  should  not  be  opened.  If  the  equipment  is suspected  of  failure,  or  is  at  the  end  of  its  life-cycle,  it  must  be returned  to  Axell  Wireless  Ltd.  for disposal.  To  return such  equipment,  please contact the Operations  Support Department,  who will  give  you a Returned  Materials  Authorisation  (RMA)  number.  Please  quote  this  number  on  the  packing documents, and on all correspondence relating to the shipment.  Polytetrafluoroethylene, (P.T.F.E.) and P.T.F.E. Composite Materials Many modules/components in AWL equipment contain P.T.F.E. as part of the RF insulation barrier. This  material should  never  be  heated to  the point  where smoke or fumes  are  evolved. Any  person feeling drowsy after coming into contact with P.T.F.E., especially dust or fumes should seek medical attention.  2.6.  Laser Safety  General good working practices adapted from EN60825-2: 2004/ EC 60825-2:2004  Do not stare with unprotected eyes or with any unapproved optical device at the fiber ends or connector faces or point them at other people, Use only approved filtered or attenuating viewing aids. Any single or multiple fiber end or ends found not to  be terminated (for example, matched, spliced) shall  be  individually  or  collectively  covered  when  not  being  worked  on.  They  shall  not  be  readily visible and sharp ends shall not be exposed. When  using  test  cords,  the  optical  power  source  shall  be  the  last  connected  and  the  first disconnected;  use  only  approved  methods  for  cleaning  and  preparing  optical  fibers  and  optical connectors. Always keep optical connectors covered to avoid physical damage and do not allow any dirt/foreign material ingress on the optical connector bulkheads. The optical fiber jumper cable minimum bend radius is 3cm; bending to a smaller radius may result in optical cable breakage and excessive transmission losses. Caution: The FO units are NOT weather proof.  2.7.  Emergency Contact Numbers  The Axell Wireless Network Services Support Desk can be contacted on: Telephone   +44 (0)1494 777747 Fax.    +44 (0)1494 777002 e-mail    support@axellwireless.com
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 6 of 16   3.  Equipment Overview  Fiber Optic, Uplink, Band Selective UHF Mid Band Booster Amplifier Part Number 60-274701 is built into an 8U, 19” rack mount shelf. The amplifier is used to filter and amplify the signal levels of one UHF band, 485.3MHz to 486.8MHz; in the Uplink direction only.  The Uplink Optical signal is received from Fiber Optic Transmitter Part Number 60-275101 via Fiber Optic cable at the FC/APC port labelled “F/O”  (annotated “A” in 3.4.); the optical Uplink signal then enters Fiber Optic RX Module 20-005501 which demodulates the Optical signal to RF.  The RF signal then passes through a Bandpass Filter 02-010801 tuned to pass the Uplink band and to  reject  out-of-band  noise;  after  leaving  the  Bandpass  filter  the  Uplink  signal  passes  through  the Variable  Switched  Attenuator  10-000701  which  can  introduce  up  to  30dB  of  signal  attenuation  if required. The attenuator is controlled by a set of four toggle switches (annotated “E” in section 3.5.) on the front panel of the Amplifier shelf; each switch is clearly marked with the attenuation it provides, and the total attenuation in-line is the sum of the values switched in.  After  leaving  the  switched  attenuator  the  Uplink  signal  passes  first  through  the  AGC  Attenuator Module 17-016401 (which is controlled by AGC Detector Module 17-019801 fitted further on in the RF path) and then through a Low Noise Amplifier 11-007402 which provides 30dB of gain.   The  Low Noise  Amplifier is  followed  by a  25W Power  Amplifier  12-026902  which provides  37dB  of gain and then the Uplink signal passes through the AGC Detector Module 17-019801 which regulates the gain level by adjusting AGC Attenuator Module 17-016401.   The AGC Detector Module monitors the RF level being delivered by the power amplifier, and when a certain threshold is reached it begins to increase the value of the AGC Attenuator Module to limit the RF output to the (factory set) threshold. Therefore overloading of the power amplifier is avoided.  After passing through the AGC Detector Module the Uplink path passes through a second Bandpass Filter 02-010801 to further reject out-of-band noise and then through VSWR Monitor 21-003207.  Upon  leaving  the  VSWR  Monitor  the  Uplink  signal  exits  the  Amplifier  shelf  for  the  Uplink  Antenna System via the N type port labelled “RF Base” (annotated “F” in section 3.5.).  The  Amplifier  is  powered  from  mains  AC  at  110V  which  drives  an  internal  400W  PSU  module providing  24V  DC  for  the  power  amplifier;  a  DC/DC  converter  provides  12V  DC  for  the  remaining active modules.  The  Amplifier  has  an alarm  system; both of the  amplifier  modules, the  PSU, DC/DC converter,  the F/O RX and the VSWR Monitor modules carry their own voltage-free, dry contact alarm relay outputs which are summed at the 15 way “D” alarm output connector on the rear of the case (annotated “L” in section 3.5.).
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 7 of 16   3.1.  List of Major Sub-Components   Component Part Part Description  Qty Per Assembly 02-010801 Bandpass Filter 2 10-000701  Variable Switched Attenuator 0-30dB  1 11-007402 Low Noise Amplifier 30dB  1 12-026902  25W Power Amplifier  1 13-003301  Mains Filter  Assembly  1 17-016401  AGC Attenuator Module  1 17-019801  AGC Detector Module  1 20-001601 12V Dual Relay Assembly 3 20-001602  24V Dual Relay Assembly  1 20-005501 Fiber Optic RX Module 1 21-003207  VSWR Monitor  1 96-200045  DC/DC Converter 24V in/12V out   1 96-300054  400W PSU Module  1 91-520003  Switchd/Fused Mains Inlet  1
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 8 of 16   3.2.  Specification   Electrical  Uplink Frequency Range 485.3MHz to 486.8MHz Bandwidth 1.5   MHz Typical Passband Ripple ± 1.5dB Uplink Power Amplifier 25W Uplink PA IP3 +63 dBm  Uplink Output Power +27 dBm/carrier  No. of F/O ports 1 FC/APC Gain 30-60 dB Gain Adjust 0-30dB in 1dB Steps VSWR 1.5:1 Impedance 50 Ohms Uplink Noise Figure < 6dB (at maximum gain) AGC 30dB Dynamic Range Power Supply 220VAC or 110VAC Power Consumption < 300 Watts Environmental/Mechanical Operating Temperature -25°C to 55°C  Storage Temperature -30°C to 70°C  Cooling Convection Humidity 95% RHNC Mechanical 19” rack, 8U Dimensions W483mm x D400mm x H360mm  Weight < 25kg RF Connectors N-Type Female Battery Back Up N/A Alarm Interfaces Local
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 9 of 16   3.3.  Circuit Schematic
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 10 of 16   3.4.  Case Front View                                   A  FC/APC Optical connector “F/O”, Optical Uplink input from F/O Transmitter, 60-275101 B  Green LED “POWER”, Fiber Optic RX Power On indicator, illuminated during normal operation C  Green LED “ALARM”, Fiber Optic RX Alarm indicator, extinguished during alarm state D  Fiber Optic RX RF gain adjustment J  Green LED “POWER”, illuminated during normal operation K  Red LED “ALARM”, illuminated during alarm condition
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 11 of 16  LOCAL ALARMSA/C INPUT 110VFUSE T3.15ARF BASEREF.       60-274601Desc.           U/L Freq:         DATE:S/N      E FI GH NLVSWR MONITORM 3.5.  Case Rear View                                   E  Variable Switched Attenuator 0-30dB, 10-000701 F  N type port “RF BASE”, RF U/L O/P to U/L antenna system G AC Input, 110V H  AC Input on/off switch I  Location of fuse for AC input L  15 Way “D” panel plug “LOCAL ALARMS”, volt free, dry contact alarm output.(1) M 9 Way “D” panel socket “VSWR MONITOR”, RS232 port for VSWR Monitor configuration (2) N  Earthing connection  (1) See section 3.6. below  (2) Not user configurable
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 12 of 16  Date: 10 June 2011© AWL 2011191915A1 A2 15A1 A2LA EXPO Uplink Booster Amplifier ShelvesAlarm Wiring Schematic Aerial HouseAsheridge RoadCheshamBuckinghamshireHP5 2QD United KingdomTelephone: +44 (0) 1494 777000Facsimile: +44 (0) 1494 777002E-Mail: info@axellwireless.comwww.axellwireless.com0V12VLOW NOISE/POWER AMPLIFIER VSWR MONITORPOWER AMPLIFIER0VFO RECIEVER24V0V24V0V0V 24V 0V 24V20-0016020V 12V 0V 12V20-0016010V 12V 0V 12V20-00160112V 12V 12V 12V0V 12V 0V 12V20-0016010V 12VFrom +VEDC-DC ConverterFROM +VEPOWER SUPPLY0VTO -VE ALARM LED ON FRONT PANEL189 1515 way “D” panel plug on front panel View on mating faceALARM OUTPUTSVOLT FREE CONTACTSOPEN=FAIL , CLOSED= GOODPINS 1 & 2  VSWR ALARM PINS 3 & 4  AMPLIFIER ALARMPINS 5 & 6  FO  ALARMPINS 7 & 8  DC-DC CONVERTOR ALARMPINS 9 & 10 PSU ALARMCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OCOMN/CN/OPage 1 of 1A3Issue: 3Drawn by: PLB/AJSNot to Scale0V12V 3.6.  Local Alarm Output Schematic
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 13 of 16   Appendix A A.1.  Glossary of Terms used in this document  Repeater or Cell Enhancer A Radio Frequency (RF) amplifier which can simultaneously amplify and re-broadcast Mobile Station (MS) and Base Transceiver Station (BTS) signals. Band Selective  Repeater A Repeater designed for operation on a range of channels within a specified frequency band. Channel Selective Repeater A Repeater, designed for operation on specified channel(s) within a specified frequency band. Channel frequencies may be factory set or on-site programmable. AC  Alternating Current AGC  Automatic Gain Control BBU  Battery Backup Unit BDA  Bi-directional Amplifier BTS  Base Transceiver Station (Base Station) B/W  Bandwidth CEMS  Coverage Enhancement Management System C/NR  Carrier-to-Noise Ratio Critical Harness  A coaxial cable harness with components of a critical length used to minimise phase discrepancies when joining signal paths of differing frequencies. DAS  Distributed Antenna System DC  Direct Current Downlink (D/L)  Signals transmitted from the BTS to the Mobiles DSP Digital Signal Processing F/O  Fiber Optic GND  Ground ID  Identification (Number) I/P Input LCX  Leaky Coaxial Cable (Leaky Feeder). LED  Light Emitting Diode LNA  Low Noise Amplifier LPA  Low Power Amplifier Mobile(s)  Hand-portable or other “Mobile” RF Transceiver equipment MOU  Master Optical Unit MTBF  Mean Time Between Failures N/A  Not Applicable N/C (of Relays)  Normally Closed N/O (of Relays) Normally Open OFR  On Frequency Repeater OIP3  Output Third Order Intercept Point O/P  Output P1dB 1dB Compression Point PA  Power Amplifier RF  Radio Frequency RHNC  Relative Humidity, Non Condensing RSA  Receiver/Splitter Amplifier RX  Receiver (Received) SDR  Software-Defined Radio S/N  Serial Number TX  Transmitter (Transmitted) Uplink (U/L)  Signals transmitted from the Mobiles to the BTS UPS Uninterruptible Power Supply VSWR  Voltage Standing Wave Ratio WDM  Wave division multiplex Date Format  Date Format used in this document is dd/mm/yyyy
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 14 of 16   A.2.  Key to Drawing Symbols used in this document
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 15 of 16   A.4.  Waste Electrical and Electronic Equipment (WEEE) Notice   The Waste Electrical and Electronic Equipment (WEEE) Directive became law in most  EU  countries  during  2005.  The  directive  applies  to  the  disposal  of  waste electrical  and  electronic  equipment  within  the  member  states  of  the  European Union.   As  part  of  the  legislation,  electrical  and  electronic  equipment  will  feature  the crossed  out  wheeled  bin  symbol  (see  image  at  left)  on  the  product  or  in  the documentation  to  show that  these products must  be  disposed  of  in  accordance with the WEEE Directive.   In the European Union, this label indicates that this product should not be disposed of with domestic or "ordinary" waste. It should be deposited at an appropriate facility to enable recovery and recycling.
Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective,  UHF Mid Band, Booster Amplifier Document Number 60-274701HBK Issue No. 2 Date 13/06/2011 Page 16 of 16   A.5.  Document Amendment Record                      Issue No. Date  Incorporated by Section Amended Reason for new issue 1  08/06/2011  AJS    Draft 2  13/06/2011  AJS    Issue

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