User's Manual

Weehawken Tunnel VHF Repeater System
User/Maintenance Handbook
Handbook N.-Weehawken_VHF Issue No:-A Date:-05/08/05
Page:-
4 of 75
7.12 Channel Selective Modules (17-009143 & 17-009127)................................................................................64
7.12.1 Description ............................................................................................................................................ 64
7.12.2 Drg. N. 17-003080, Generic Channel Module Block Diagram ........................................................... 65
7.13 12 & 24V Relay Boards (20-001601 & 20-001602) .....................................................................................66
7.13.1 Description ............................................................................................................................................ 66
7.13.2 Technical Specification .........................................................................................................................66
7.14 12 & 24V Single Relay Board (80-008901 & 80-008902)............................................................................ 67
7.14.1 Description ............................................................................................................................................ 67
7.15 24V, 400W Power Supply Pack (96-300054) ............................................................................................... 67
7.15.1 Description ............................................................................................................................................ 67
7.15.2 Technical Specification .........................................................................................................................67
8. INSTALLATION...................................................................................................................................68
8.1 General Remarks............................................................................................................................................... 68
8.2 RF Connections................................................................................................................................................. 69
8.3 Commissioning ................................................................................................................................................. 69
9. MAINTENANCE...................................................................................................................................70
9.1 Fault Finding .....................................................................................................................................................70
9.1.1 Quick Fault Checklist................................................................................................................................ 70
9.1.2 Fault Isolation............................................................................................................................................ 70
9.1.3 Downlink................................................................................................................................................... 71
9.1.4 Uplink........................................................................................................................................................ 71
9.1.5 Checking service ....................................................................................................................................... 71
9.1.6 Fault repair ................................................................................................................................................ 72
9.1.7 Service Support ......................................................................................................................................... 72
9.2 Tools & Test Equipment ................................................................................................................................... 72
9.3 Care of Modules................................................................................................................................................ 73
9.3.1 General Comments....................................................................................................................................73
9.3.2 Module Removal (LNA’s, general procedure):......................................................................................... 73
9.3.3 Module Replacement (general): ................................................................................................................73
9.3.4 Power Amplifiers ......................................................................................................................................73
9.3.5 Low Power Amplifier Replacement..........................................................................................................74
9.3.6 Module Transportation:............................................................................................................................. 74
APPENDIX A INITIAL EQUIPMENT SET-UP CALCULATIONS....................................................75