User’s Manual for Node M and Node C
Network Elements
Page 4 M0121A4A.doc
5. FUNCTIONAL DESCRIPTION 37
5.1. DIGITAL ARCHITECTURE 37
5.2. FEATURES 39
5.2.1. Filters Node M 39
5.2.2. Filters Node C 39
5.2.3. Digital ICE (Digital Interference Cancellation Equipment) 40
5.2.4. VSWR (Voltage Standing Wave Ratio) 40
5.2.5. RSSI (Receive Signal Strength Indication) 41
5.2.6. Alarm Forwarding 41
5.2.7. Downlink Final Amplifier 42
5.2.8. Power Supply Unit 44
5.2.9. Modems 45
5.2.10. Digital Channel Module (DCM) 48
5.2.11. External Alarm Controller - EAC-Board 49
5.2.12. Battery Pack - Battery On/Off 55
5.2.13. UL and DL Duplexer 57
6. MAINTENANCE AND REPLACEMENT 59
7. ILLUSTRATIONS 59
7.1. CABINET DRAWING 59
7.2. LAYOUT OF THE NODE M/C 843 60
8. INDEX 61
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