Notifier NFS-640

Voice Alarm System System Overview
NFS-640 Installation Manual P/N 51332:B1 12/01/2003 25
2.11 Voice Alarm System
Introduction
Voice Alarm equipment provides a manual or automatic supervised paging system for transmitting
voice messages (information, instructions, directions) on a selective or all call basis. For more
information and installation instructions refer to the Voice Alarm System manual.
Configuration
VCC-1B Voice Control Center. Basic equipment package for single-channel audio evacuation
system that includes: AMG-1 Audio Message Generator (with microphone), CHS-4L Chassis,
DPSW-1B Single-well Dress Panel, and Cable assemblies required to connect to control panel.
VTCC-1B Voice/Telephone Control Center. Basic equipment package for single-channel
audio evacuation system employing a Fire Fighter’s Telephone system that includes: FFT-7 Fire
Fighter’s Telephone, AMG-1 Audio Message Generator (with microphone), CHS-4L Chassis,
DPDW-1B Double-well Dress Panel, and Cable assemblies required to connect to control panel.
TCC-1B Telephone Control Center. Basic equipment package for a Fire Fighter’s Telephone
system with no voice evacuation or paging capabilities that includes: FFT-7 Fire Fighter’s
Telephone, CHS-4L Chassis, TBP-1B Blank Panels (2), DPDW-1B Double-well Dress Panel, and
Cable assemblies required to connect to control panel.
Descriptions
Audio Message Generator (AMG-1 & AMG-E). Provides a variety of tones and a built-in
microphone allows for paging through speaker circuits. Optionally, you can install up to four
digitally-recorded voice messages into the AMG-1: two factory prerecorded voice messages, two
user-defined messages. You can create both user-defined messages through the AMG-1 built-in
microphone, or download messages from a standard audio cassette recorder.
The AMG-E is an AMG-1 without a microphone. It is used for applications that require multiple
Audio Message Generators.
Fire Fighters Telephone (FFT-7 and FFT-7S). Provides the Voice Alarm System with fire
fighter's telephone capability. With these units, up to seven telephones can be used to hold a
simultaneous conversation. The FFT-7S does not provide paging capability.
Voice Control Module (VCM-4RK). Provides the system with up to four (4) Style Y (Class B)
or Style Z (Class A) speaker circuits, or up to four Style Y (Class B) telephone circuits. Moving a
jumper on the module configures it for driving FFT-7 circuits. When configured for telephone
circuits, the VCM-4RK accepts its signal directly from a Fire Fighters Telephone. Add an optional
Voice Control Expander (VCE-4) to the back of the module to provide four additional telephone or
speaker circuits.
Dual Channel Module (DCM-4RK). Provides the system with the capability to select one of
two types of audio sources for switching to a specified speaker circuit. The module provides up to
four circuits.
Audio Amplifiers. The control panel uses three types of audio amplifiers with an installed Voice
Alarm System:
• AA-30 – Provides up to 30 watts of audio power for driving 25 Vrms speaker circuits.
• AA-100 – Provides 100 watts of audio power for driving 25 Vrms and 70.7 Vrms speaker
circuits.
• AA-120 – Provides 120 watts of audio power for driving 25 Vrms speakers.
Each AA amplifies the audio signal coming in from an Audio Message Generator (AMG-1 or
AMG-E).