3
Installation and Maintenance Manual
Federal Signal
www.fedsig.com
Table of Contents
Safety Message to Installers of Federal Signal Products ............................................................ 5
Unpacking the Product ................................................................................................................... 6
An Overview of the Model 300MB .................................................................................................. 6
Chassis Description ............................................................................................................... 8
Input Configuration
................................................................................................................. 8
Control Circuitry ..................................................................................................................... 9
Power Requirements ............................................................................................................. 9
Recommendation for the Signal Lines ........................................................................................ 12
Connecting Signal Lines ...................................................................................................... 12
Connecting to Remote Devices.................................................................................................... 13
Balanced Line Application .................................................................................................... 13
Unbalanced Line Application ................................................................................................ 14
Connecting a Low-Level Audio Input ................................................................................... 14
Connecting a Low-Level Audio Output ................................................................................. 15
Typical Installations of the 300MB ............................................................................................... 16
As a SelecTone Control Center ............................................................................................ 16
As a Remote Microphone and Message Playback .............................................................. 16
Driving a 25 V
RMS
Speaker Line ........................................................................................... 17
Interfacing with a Central Amplified System
......................................................................... 18
As a Typical Central Power System ..................................................................................... 18
Connecting Power to the CommCenter System ......................................................................... 19
For 120 Vac Operation ......................................................................................................... 19
For 240 Vac Operation ......................................................................................................... 19
For 24 Vdc Operation ........................................................................................................... 19
Safety Messages to Maintenance Personnel .............................................................................. 20
Installing Storage Chips ............................................................................................................... 21
Getting Replacement Parts........................................................................................................... 23
Getting Service .............................................................................................................................. 23