Airspan AS4000 Operator's Manual

Issue 1.2 Date 5/11/98 AS4000 Wireless Local Loop System Central Terminal Level Control Unit Operators Manual ...

Operators Manual Preface 605-0000-428 Issue 1.2 Date 5/11/98 Page 2 of 8 This Page Intentionally Blank ...

Operators Manual Preface 605-0000-428 Issue 1.2 Date 5/11/98 Page 3 of 8 Notice 1. This manual is subject to revision. 2. All rights reserved. 3. Right of modification reserved. 4. This manual is supplied without liability for errors or omissions. 5. No part of this manual may be reproduced or used except as authorised by contract or other written permission. 6. This equipment is conditioned by the requirement that no m ...

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Operators Manual Preface 605-0000-428 Issue 1.2 Date 5/11/98 Page 5 of 8 Safety Instructions - Warnings and Cautions SAFETY 1. Read and follow all warning notices and instructions marked on the product or included in this manual 2. Do not allow anything to rest on the power cord and do not locate the product where persons could step or walk on the power cord. 3. When installed in the final configuration, the product mus ...

Operators Manual Preface 605-0000-428 Issue 1.2 Date 5/11/98 Page 6 of 8 NOTE Airspan products do not contain hazardous substances (as defined in UK ‘Control of Substances Hazardous to Health Regulations 1989’, and the ‘Dangerous Substances Regulations 1990’). At the end of any Airspan product’s life cycle, the customer should consult with ACC to ensure that the product is disposed of in conformance with the ...

Operators Manual Preface 605-0000-428 Issue 1.2 Date 5/11/98 Page 7 of 8 User Response Form Mail: Airspan Communications Limited Fax: (44) 895 4677182 Cambridge House Oxford Road Uxbridge Middlesex UB8 1UN Document Rating Excellent Good Average Below Average Poor Accuracy / Completeness � � � � � Clarity / Organisation � � � � � Figures � � � � � Table of Contents/In ...

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Operators Manual ICL 001 605-0000-428 Issue 1.2 Date 5/11/98 Page 1 of 2 © Copyright Airspan Communications Corporation 1998 ISSUE CONTROL LIST Title Issue Date Issue Details Title Page 1.2 November 1998 Issue ICL-001 1.2 November 1998 Issue IXL-001 1.2 November 1998 Issue GSI-001 1.2 November 1998 Issue DLP-001 1.2 November 1998 Issue ...

Operators Manual ICL 001 605-0000-428 Issue 1.2 Date 5/11/98 Page 2 of 2 CHANGE TYPE/DATE PURPOSE PAGES AFFECTED Draft Issue #, Month Year ...

Operators Manual IXL 001 605-0000-428 Issue 1.2 Date 5/11/98 Page 1 of 4 © Copyright Airspan Communications Corporation 1998 INDEX TASK LIST PREFACE: Safety Instructions Warnings and Cautions User Response Form ACCESS: ICL, IXL Issue Control List ICL-001 Index Task List IXL-001 GENERAL SYSTEM INFORMATION: GSI Introduction.GSI-001 1. Purpose of Document.................................................................. ...

Operators Manual IXL 001 605-0000-428 Issue 1.2 Date 5/11/98 Page 2 of 4 Abbreviations AC Alternating Current AGC Automatic Gain Control CPE Customer Premises Equipment CRU Customer Radio Unit CT Central Terminal DC Direct Current DMM Digital Multi Meter DRS Digital Radio System ISDN Integrated Services Digital Network ITU-T International Telecommunications Union -Telecommunications LD Loop Disconnect LED Light Emittin ...

Operators Manual IXL 001 605-0000-428 Issue 1.2 Date 5/11/98 Page 3 of 4 Related Documentation Fixed Assignment 605-0000-430 System Overview 605-0000-431 System Operations and Maintenance Manual 605-0000-432 Central Terminal - Equipment Rack Installation & Commissioning 605-0000-433 Central Terminal - Antenna/Feeder Installation & Commissioning 605-0000-434 Hardware Overview 605-0000-435 Material Return and Repair 605- ...

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Operators Manual GSI 001 605-0000-428 Issue 1.2 Date 5/11/98 Page 1 of 2 © Copyright Airspan Communications Corporation 1998 INTRODUCTION 1. Purpose of Document This document describes the operation of the ACC (CT) Rack Level Control Unit 2. Prerequisite skills This manual is intended for use by persons familiar with the Airspan product having attended the ACC CT training course prior to performing the procedures in th ...

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Operators Manual GSI 002 605-0000-428 Issue 1.2 Date 5/11/98 Page 1 of 14 © Copyright Airspan Communications Corporation 1998 LEVEL CONTROL UNIT 1. Introduction The Level Control Unit (LCU) is used during system commissioning and routine maintenance. The Unit can be used to commission the Central Terminal, and set to poll each modem shelf hourly or daily to ensure the receiver setting is at its optimum. One Level Contr ...

Operators Manual GSI 002 605-0000-428 Issue 1.2. Date 5/11/98 Page 2 of 14 Level Control Unit Modem Shelf 1 Modem Shelf 2 Modem Shelf 3 Modem Shelf 4 RF Combiner Shelf Antenna Port 1 Coupler Shelf 1 & 2 Tx 1, 2, 3, 4 Rx Shelf 3 & 4 Tx ‘B’ Communication lines to each shelf controller Includes keypad and display for user I/O Digi Board Sitespan PC Antenna Port 2 Coupler or X25 PAD To Element Manager Figure 1. LCU ...

Operators Manual GSI 002 605-0000-428 Issue 1.2. Date 5/11/98 Page 3 of 14 3. Principles of Operation The Level Control Unit periodically acquires a full low rate RF downlink / uplink through RF cabling coupled into the CT transmit / receive antenna ports. Knowledge of the path loss between the Level Control Unit and RF antenna port allows the LCU to instruct the Shelf Controller to adjust RF receive level as required. ...

Operators Manual GSI 002 605-0000-428 Issue 1.2. Date 5/11/98 Page 4 of 14 4. Level Control Unit 4.1. Mechanical The Level Control Unit is fitted at the base of the Central Terminal Rack and measures 600mm wide, 300mm deep. 100mm high. 1 Dip/ LNA TX Filter DC In 1 1 1 1 2 3 7 Shelf 4 Shelf 1 Shelf 3 Shelf 2 Terminal OK FRU Fail Front Left Side Right Side A B 4.2. RF Interconnect The Level Control Unit has two RF ports ...