Andrew Wireless Innovations Group RPT-NODEC1943 User Manual
User’s Manual for Node C Network Elements
Page 4
PRELIMINARY M0121A1A_uc.doc
5 FUNCTIONAL DESCRIPTION
69
5.1
GENERAL 69
5.2
FEATURES OF THE NODE C
72
5.2.1
Filters 72
5.2.2
Digital ICE (Digital Interference Cancellation Equipment)
72
5.2.3
VSWR (Voltage Standing Wave Ratio)
73
5.2.4
RSSI (Receive Signal Strength Indication)
73
5.2.5
Alarmforwarding 73
5.2.6
External Alarms
74
5.2.7
Summary Alarm
75
5.3
COMPONENTS OF THE NODE C AND INTERFACE UNIT
76
5.3.1
Duplexer 76
5.3.2
RF and DC Distribution Unit
78
5.3.3
Digital Channel Module (DCM)
79
5.3.4
Uplink Final Amplifier
80
5.3.5
Downlink Final Amplifier
80
5.3.6
Distribution & Alarm Board
82
5.3.7
Power Supply
83
5.4
OPTIONAL EQUIPMENT
83
5.4.1
Modem with Battery Backup
83
5.4.1.1
Initstrings 84
5.4.1.2
Wireless Modem
84
5.4.1.3
Battery Backup
85
5.4.2
PSU Redundancy
86
5.4.3
High Rejection Filter
86
6 MAINTENANCE 87
6.1
GENERAL 87
6.2
REPLACEMENT OF COMPONENTS
87
6.2.1
Power Supply
88
6.2.2
Modem 89
6.2.3
Battery Backup
90
7 APPENDIX 91
7.1
ILLUSTRATIONS 91
7.1.1
Cabinet Drawings
91
7.1.2
Layout 93
7.2
SPECIFICATIONS 96
7.2.1
Electrical Specifications
96
7.2.2
Mechanical Specifications
98
7.2.3
Specifications for Optional Equipment
98
7.3
PARTSLISTS 99
7.3.1
Interface Unit
99
7.3.2
Node C
100
8 INDEX 101