User's Guide

Maintenance Handbook (1)
Baltimore Radio Repeater System
Handbook No. 60-166101HBKM Page 3 of 33
Table of Contents
1. INTRODUCTION.......................................................................................................................... 2
Scope and Purpose of this Document................................................................................................. 2
Limitation of Liability Notice................................................................................................................. 2
2. SAFETY CONSIDERATIONS...................................................................................................... 5
2.1 Earthing of Equipment .............................................................................................................. 5
2.2 Electric Shock Hazard............................................................................................................... 5
2.3 RF Radiation Hazard ................................................................................................................ 5
2.4 Chemical Hazard ...................................................................................................................... 6
2.5 Laser safety .............................................................................................................................. 6
2.6 Emergency Contact Numbers................................................................................................... 6
3. EQUIPMENT OVERVIEW/SPECIFICATIONS............................................................................. 7
3.1 Master Site Equipment.............................................................................................................. 8
3.1.P Master Site Photographs....................................................................................................8
3.2 PRESTON (60-166301) & OCC (60-166401) Master Sites Description................................ 8
3.3 Master Site Technical Specifications..................................................................................... 8
3.4 Master Site Mechanical Specifications .................................................................................. 9
3.5 Air Interface System Diagram, Drg. No. 60-166181 ............................................................ 10
3.6 FO Interface System Diagram, Drg. No. 60-166381............................................................ 11
3.7 FO Interface System Diagram, Drg. No. 60-166481............................................................ 12
3.8 Master Site UHF Rack Layout and Interconnections, Drg. No. 60-166151 ......................... 13
3.9 Master Site AIF Wiring Diagram, Drg. No. 60-166152......................................................... 14
3.10 AIU Duplexer/Amplifier Shelf Outline Drawing, Drg. No. 60-166192................................ 15
3.11 AIU Downlink Channel Shelf Outline Drawing, Drg. No. 60-166193 ................................ 16
3.12 AIU Uplink Channel Shelf Outline Drawing, Drg. No. 60-166194..................................... 17
3.13 Master Site Passive/PSU Shelf Outline Drawing, Drg. No. 60-166392............................ 18
3.14 Master Site FO Tx Sub-Rack Outline Drawing, Drg. No. 60-166393 ............................... 19
3.15 Master Site FO Rx Sub-Rack Outline Drawing, Drg. No. 60-166394............................... 20
3.16 Master Site Racks Parts List ............................................................................................ 21
4. INSTALLATION & COMMISIONING.......................................................................................... 22
4.1 Initial Installation Record......................................................................................................... 22
4.2 Antenna Installation & Gain Calculations................................................................................ 22
4.3 Antenna Isolation .................................................................................................................... 23
4.4 Rack Mounted Equipment.......................................................................................................24
4.5 Optical Connections................................................................................................................ 24
4.6 Wall Mounted Equipment........................................................................................................ 25
4.7 RF Connections ...................................................................................................................... 25
4.8 RF Commissioning.................................................................................................................. 25
5. FAULT FINDING / MAINTENANCE ........................................................................................... 26
5.1 Tools & Test Equipment.......................................................................................................... 26
5.2 Basic Fault Finding ................................................................................................................. 26
5.3 Quick Fault Checklist .............................................................................................................. 27
5.4 Downlink ................................................................................................................................. 27
5.5 Uplink...................................................................................................................................... 27
5.6 Fault repair.............................................................................................................................. 27
5.7 Service Support ...................................................................................................................... 27
5.8 Care of Modules...................................................................................................................... 28
5.9 Module Removal (LNAs, general procedure):......................................................................... 28
5.10 Module Replacement (general): .......................................................................................... 28
5.11 Power Amplifiers.................................................................................................................. 28
5.12 Low Power Amplifier Replacement...................................................................................... 29
5.13 Module Transportation:........................................................................................................ 29
6 APPENDIXES ............................................................................................................................ 30
6.1 Glossary of Terms used in this document............................................................................... 30
6.2 AFL RF Module Drawing Key ................................................................................................. 31