Axell Wireless 60 1376SERIES User Manual

Aerial Facilities Limited

UHF

Bi-Directional Amplifier

AFL product part No: 60-137705

Aerial Facilities Limited

Document layout

Technical Literature

Handbook Number: 60-137705HBKM Issue No: A Date: 02/03/2006 Page: 1 of 20

Table of Contents

1. INTRODUCTION ...............................................................................................................................3

Scope and Purpose of Document ....................................................................................................... 3

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 Chemical Hazard.................................................................................................................... 5

2.5 Laser Safety ........................................................................................................................... 5

2.6 Emergency Contact Numbers ................................................................................................ 5

3. EQUIPMENT OVERVIEW............................................................................................................ 6

3.1 Technical Specification (whole system) .................................................................................6

3.2 Mechanical Specification........................................................................................................7

3.3 Parts List ................................................................................................................................ 8

3.4 System Drawings ...................................................................................................................9

3.4.1 BDA Shelf System Diagram ............................................................................................... 9

4. INSTALLATION.......................................................................................................................... 11

4.1 Initial Installation Record ...................................................................................................... 11

5. FAULT FINDING & MAINTENANCE.......................................................................................... 12

5.1 General Fault Finding Procedures .......................................................................................12

5.2 Downlink............................................................................................................................... 13

5.3 Uplink ................................................................................................................................... 13

5.4 Fault repair ........................................................................................................................... 13

5.5 Checking service .................................................................................................................. 14

5.6 Service Support .................................................................................................................... 14

5.7 Tools & Test Equipment....................................................................................................... 14

5.8 General Maintenance Procedures........................................................................................ 15

5.9 Module Removal (LNA’s, general procedure): ..................................................................... 15

5.10 Module Replacement (general): ........................................................................................... 15

5.11 Power Amplifiers ..................................................................................................................15

5.12 Low Power Amplifier Replacement ...................................................................................... 16

5.13 Module Transportation: ........................................................................................................16

APPENDIX A .......................................................................................................................................17

Amendment List Record Sheet ......................................................................................................... 17

Glossary of Terms.............................................................................................................................18

Key to Drawing Symbols used in this document ............................................................................... 19

APPENDIX B .......................................................................................................................................20

Initial Equipment Set-Up Calculations...............................................................................................20

General Information........................................................................................................................ 20

Antenna Systems ........................................................................................................................... 20

Initial Parameters ...........................................................................................................................20

Downlink Calculations .................................................................................................................... 20

Uplink Calculations.........................................................................................................................20

Handbook Title:-BDA
User Handbook

Handbook No. 60-137705HBK Page: 2 of 20

1. INTRODUCTION

Scope and Purpose of Document

This handbook is for use solely with the equipment identified by the AFL Part Number shown on the
front cover. It is not to be used with any other equipment unless specifically authorised by Aerial
Facilities Limited. This is a controlled release document and, as such, becomes a part of Aerial
Facilities’ Total Quality Management System. Alterations and modification may therefore only be
performed by Aerial Facilities Ltd.

AFL recommends that the installer of this equipment familiarise his/herself 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 AFL, normally at the company’s repair facility in Chesham, England.

This handbook has been prepared in accordance with BS 4884, and AFL’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 to the Quality Manager.
This document fulfils the relevant requirements of Article 6 of the R&TTE Directive.

Limitation of Liability Notice

This manual is written for the use of technically competent operators/service persons. No liability is
accepted by AFL 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, AFL does not warrant the absolute accuracy of the information contained within this
manual, or it’s completeness, fitness for purpose, or scope.

AFL 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.

All AFL 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.

Handbook Title:-BDA
User Handbook

Handbook No. 60-137705HBK Page: 3 of 20

2. SAFETY CONSIDERATIONS

2.1 Earthing of Equipment

Cell Enhancers 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

Electrical shocks due to faulty mains driven power supplies.
Whilst ever potentially present in any electrical equipment, such a condition would be
minimised by quality installation practice and thorough testing at:

a) Original assembly

b) Commissioning

c) Regular intervals, thereafter.

All test equipment to 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 AFL’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 unterminated. 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 50, and that of free space at 377, which would severely
mitigate against 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.

Handbook Title:-BDA
User Handbook

Handbook No. 60-137705HBK Page: 4 of 20

2.4 Chemical Hazard

Beryllium Oxide, also known as Beryllium Monoxide, or Thermalox™, is sometimes

used in devices within equipment produced by Aerial Facilities 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 Aerial Facilities Ltd for
disposal.

To return such equipment, please contact the Quality 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 AFL 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.

2.5 Laser Safety

General working practices adapted from EN60825-2: 2000

“Do not stare with unprotected eyes or with any unapproved optical device at the fibre
ends or connector faces or point them at other people.”

“Use only approved filtered or attenuating viewing aids.”

“Any single or multiple fibre 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 fibres and optical connectors.”
Always keep optical connectors covered to avoid physical damage
Do not allow any dirt/foreign material ingress on the optical connector bulkheads.
The optical fibre jumper cable maximum bend radius is 3cm, any smaller radii may result in optical
cable breakage or excessive transmission losses.
Caution: The FO units are NOT weather proof.

2.6 Emergency Contact Numbers

The AFL Quality Department can be contacted on:

Telephone [phone]
Fax [phone]
e-mail [e-mail]

Handbook Title:-BDA
User Handbook

Handbook No. 60-137705HBK Page: 5 of 20

3. EQUIPMENT OVERVIEW

The BDA system comprises two standard 19” rack mounted shelves:-

60-173705 (PSU & RF Amplifiers BDA shelf)
80-245102 (Stand-alone Amplifier shelf)

3.1 Technical Specification (whole system)

PARAMETER SPECIFICATION

Downlink frequency range: 408–411MHz

Uplink frequency range: 417-420MHz

Gain: 60dB

Passband ripple: ±1.5dB

Attenuation: 0-30dB

Downlink OIP3: +65dBm

Uplink OIP3: +40dBm

RF levels (BDA shelf):

Power supply consumption:

Impedance: 50

Summary alarm connector outputs: Pins 1 & 2

Temperature range:

Base 4 Carriers -10dBm (antenna output)

Mobile: 4 Carriers +37dBm (antenna output)

30A max.@ 24V DC

1.0A max @ 12V DC

AGC level:

Alarms: 4 x LNA, 2 x LPA, & 2 x 100W PA

operation: -10%C to +60%C

storage: -20%C to +70%C

+37dBm per carrier(D/L)
0dBm (U/L)

Handbook Title:-BDA
User Handbook

Handbook No. 60-137705HBK Page: 6 of 20