PBE Europe as Axell Wireless 60-274901 60-274901 Fibre Feed Amplifier User Manual Manual

Axell Wireless 60-274901 Fibre Feed Amplifier Manual

Manual

Axell Wireless Limited Technical Literature Fiber Optic, Uplink, Band Selective, VHF Booster Amplifier Document Number 60-274901HBK Issue No. 2 Date 13/06/2011 Page 1 of 16 Fiber Optic, Uplink, Band Selective, VHF Booster Amplifier User Handbook For GETS Global Signalling L.L.C. AWL Works Order Q122997 AWL Product Part No. 60-274901 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, VHF Booster Amplifier Document Number 60-274901HBK 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, VHF Booster Amplifier Document Number 60-274901HBK 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, VHF Booster Amplifier Document Number 60-274901HBK 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, VHF Booster Amplifier Document Number 60-274901HBK 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, VHF Booster Amplifier Document Number 60-274901HBK Issue No. 2 Date 13/06/2011 Page 6 of 16 3. Equipment Overview Fiber Optic, Uplink, Band Selective, VHF Booster Amplifier Part Number 60-274901 is built into an 8U, 19” rack mount shelf. The amplifier is used to filter and amplify the signal levels of one VHF band, 155.5MHz to 161.0MHz; 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 01-001749 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 11-008901 which provides 28dB of gain. The Low Noise Amplifier is followed by a 20W Power Amplifier 12-028501 which provides 36dB 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 01-001749 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, VHF Booster Amplifier Document Number 60-274901HBK 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 01-001749 Bandpass Filter 2 10-000701 Variable Switched Attenuator 0-30dB 1 11-008901 Low Noise Amplifier 28dB 1 12-028501 20W Power Amplifier 36dB 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, VHF Booster Amplifier Document Number 60-274901HBK Issue No. 2 Date 13/06/2011 Page 8 of 16 3.2. Specification Electrical Uplink Frequency Range 155.5MHz to 161.0MHz Bandwidth 5.5 MHz Typical Passband Ripple ± 1.5dB Uplink Power Amplifier 20W Uplink PA IP3 +53 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, VHF Booster Amplifier Document Number 60-274901HBK 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, VHF Booster Amplifier Document Number 60-274901HBK Issue No. 2 Date 13/06/2011 Page 10 of 16 3.4. Case Front View A FC/APC Optical connector “F/O”, VHF 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, VHF Booster Amplifier Document Number 60-274901HBK Issue No. 2 Date 13/06/2011 Page 11 of 16 LOCAL ALARMSA/C INPUT 110VFUSE T3.15ARF BASEREF. 60-274901Desc. 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”, VHF 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, VHF Booster Amplifier Document Number 60-274901HBK 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, VHF Booster Amplifier Document Number 60-274901HBK 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, VHF Booster Amplifier Document Number 60-274901HBK 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, VHF Booster Amplifier Document Number 60-274901HBK 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, VHF Booster Amplifier Document Number 60-274901HBK 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 07/06/2011 AJS Draft 2 13/06/2011 AJS Issue

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