Wireless Intercom System Table of Contents
3M 2003 March i
Section 1. Operation and Diagrams
Introduction..................................................................................................................................................... 1-1
System Components........................................................................................................................................ 1-1
Base Station........................................................................................................................................ 1-1
Headset............................................................................................................................................... 1-1
Battery Charger.................................................................................................................................. 1-1
Speaker and Microphone Assemblies................................................................................................ 1-1
Interconnect Module .......................................................................................................................... 1-1
Cross-Lane Module............................................................................................................................ 1-1
Vehicle Alert System ......................................................................................................................... 1-1
System Configurations.................................................................................................................................... 1-1
Single-Lane Standard Communication System.................................................................................. 1-1
Dual-Lane Standard Communication System.................................................................................... 1-1
Single-Lane Duplex Communication System.................................................................................... 1-2
Dual-Lane Duplex Communication System....................................................................................... 1-2
Cross-Lane Communication System.................................................................................................. 1-2
Operating Theory ............................................................................................................................................ 1-2
Processing Vehicle Alert Signals....................................................................................................... 1-2
Transmitting and Receiving............................................................................................................... 1-2
Talk/Listen Communication............................................................................................................... 1-3
Talk Lock Mode................................................................................................................................. 1-3
Page Mode.......................................................................................................................................... 1-3
Page Monitor Mode............................................................................................................................ 1-4
Cross-Lane Talk/Listen Mode............................................................................................................ 1-4
Monitor Amplifier and Speaker ......................................................................................................... 1-4
Headset Components....................................................................................................................................... 1-4
Rechargeable Battery ......................................................................................................................... 1-4
Base Station..................................................................................................................................................... 1-5
DC Power........................................................................................................................................... 1-5
Talk/Page Input.................................................................................................................................. 1-5
Vehicle Detector Input....................................................................................................................... 1-5
Menu Mic Input.................................................................................................................................. 1-6
Base Station Configuration Jumpers and Switches............................................................................ 1-6
Base Station and External Components Diagram ........................................................................................... 1-9
Interconnect Module ....................................................................................................................................... 1-11
On/Off DC.......................................................................................................................................... 1-11
Menu Microphone Signal Control...................................................................................................... 1-11
Menu Speaker Audio Control ............................................................................................................ 1-11
Monitor Speaker Audio Control......................................................................................................... 1-11
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