GAI-Tronics 10959-903 User manual

AUDIO CONTROL CENTER
HARD-WIRED SYSTEM INTERCONNECTION w/ RADIO ACCESS
Notes: 1. Each Addressable Amplified Speaker will require 120 Vac (12 Vdc power supply) or
solar power.
2. Each Stanchion Broadcast Assembly will require 120 Vac power.
Model ACC2500
Desktop System
Controller
Model 10959-903
Wall-Mount
Audio Messenger
Interface
Model
GTG08071
Audio
Distribution
Cabinet
(96 circuits)
Model
GTG08071
Audio
Distribution
Cabinet
(96 circuits)
Bldg. 3
Bldg. 1
Bldg. 2
Represents a twisted telephone pair, typical to each
stanchion, speaker, intermediate ADC, or PA interface
(stanchions require an additional pair for the telephone)
Twisted Audio
Pair
Existing
PBX
or
PSTN
Extension
or Trunk
Port
RF
Addressable
Amplified
Speaker
(typical)
RF
Stanchion
Broadcast
Assembly
(typical)
Model
GTG08081
P.A. Interface
Assy.
Existing
Central
Amplifier
Inside
Speakers
North
Parking
Lot
Outside
Speakers
South
Parking
Lot
ZONE 3
Indicates
RF
Access
Antenna
Portable
Radio with
DTMF
Keypad
ZONE 2
ZONE 1
Customer-provided Cat 5e/6
Connection (Audio and
RS232 Communications)
Model 12612-002
Interface

Hard-Wired Public Address/Alarm System with
Radio Access
GENERAL
The proposed GAI-Tronics Public Address/Alarm System consists of the following items:
Model ACC2500 Desktop Controller
Model 10959-903 Audio Messenger Interface
Model GTG08081 PA Interface Assembly (if applicable)
RF Stanchion Broadcast Assemblies (if applicable)
RF Addressable Amplified Speakers (if applicable)
Audio Distribution Cabinet (Model GTG08071), if required
Appropriate Radio Equipment (provided by others)
The communication medium between the ACC2500 Desktop Controller and the 10959-903 Audio
Messenger Interface will be via customer-provided Cat 5e/6 cable with RJ-45 connections. The
maximum distance allowable between the ACC2500 and the 10959-903 cannot exceed a total of 50 feet.
The audio output of the Audio Messenger Interface connects to an appropriately sized Audio Distribution
Cabinet (96, 48, or 24 circuits) via a twisted pair. An audio connection between Audio Distribution
Cabinets or between each distribution cabinet and its associated speakers or stanchion assemblies is also
via a twisted pair. Note that wiring for the telephone is not indicated on the Interconnection Diagram;
only broadcast wiring is displayed.
The Model GTG08071 Audio Distribution Cabinet is designed to accept a 600 Ohm, audio signal input
and provide up to 96 balanced outputs. Additionally, a single dry contact closure output is available when
audio is received from the AMI. This output can be used for external device activation such as a strobe,
bell, etc. It can also be used as a PTT control for a base radio. Each audio output can connect to any
device requiring a balanced, 600 Ohm, 0 dBM input. These include:
GAI-Tronics’ RF Addressable Amplified Speakers (13363, 13373)
GAI-Tronics’ RF Stanchion Broadcast Products (234SBA, 234SBM)
Radio Base Station (audio and dry contact closure connection required)
Central Amplifier Equipment
GAI-Tronics’ RF PA Interface Assembly (GTG08081)
The Public Address speaker system will be capable of being accessed from the Model ACC2500 Desktop
Controller with pre-recorded alarms and voice messages, from the existing telephone system (live voice
access only), or from the existing radio system (live voice access only). Note that access from the radio
system requires radios that are equipped with DTMF keypad (DTMF encode).
OPERATION
RF Addressable Amplified Speakers, RF Stanchion Broadcast Products, and RF PA Interface
Assemblies
Each Addressable Amplified Speaker (13363 or 13373) and Stanchion Broadcast Product (234SBA or
234SBM) includes an addressable (via DTMF), integral amplifier and built-in RF receiver. The Model
GTG08081 Public Address Interface Assembly includes addressable circuitry and a built-in RF receiver.
Each device is capable of being programmed for up to eight (8) DTMF access codes. The first
programmed access code will always be the individual unit’s address. This address will be used not only
to broadcast specifically from that unit, but also to remotely adjust that unit’s output volume level
(volume adjustment pertains to stanchion broadcast products and amplified speakers only).

Each unit’s amplifier circuitry will remain in a rest or sleep mode until it receives a valid access code.
Once a valid address code is received, the amplifier circuitry will continue to broadcast until audio or RF
carrier is no longer detected. With the loss of audio or RF carrier for a pre-programmed amount of time,
the amplifier circuitry will return to sleep.
The PA Interface Assembly is designed to provide a 600 Ohm audio output and dry contact closure to
existing or new central amplifier equipment intended to power a series of connected 70.7V or 25V
speakers. These units will provide an output only when the appropriate DTMF access code is received.
Like the amplified speakers and stanchion broadcast products, the interface will return to sleep mode
when the audio signal or RF carrier is lost for a pre-programmed amount of time. This interface, and
consequently the building or area it controls, is accessible in the same format as are the Addressable
Amplified Speaker and the Stanchion Broadcast Products.
Head-End Equipment
The system head-end will include a Model ACC2500 Desktop Controller and Model 10959-903 Audio
Messenger Interface (AMI). The AMI must be installed within 50 feet of the controller, due to the
limitations of the RS232 communication link between the two. The system is designed to be controlled
from this central location but a secondary Desktop Controller can be installed as back up to the primary.
The back-up configuration would operate in a “hot-standby” mode, meaning the system would
automatically switch over to the back-up unit if the primary unit is lost (power loss or cable/line
disconnect).
Model ACC2500 Desktop Controller
The Model ACC2500 Desktop Controller will be capable of performing the following functions:
Manual Voice Broadcast –Each stanchion or speaker assembly will be programmed for access via
specific DTMF addresses (up to 8 addresses per stanchion assembly). The Desktop Controller will be
capable of entering individual, zone (group), or all-call addresses via a pre-programmed, scrolled alias list
appearing on the integral 32-character, LCD display or via manual access code entry. Entering the
desired address/zone and pressing the Transmit button will address the desired unit(s) and allow the voice
announcement to be heard over the appropriate speaker assemblies. The operator will hear a splash tone,
indicating when to begin speaking. Broadcasting can occur with the handset on-hook or off-hook. A
“splash tone” will be heard over the system speakers prior to the voice broadcast.
Addressable Alarms –The Desktop Controller will be capable of activating up to 250 tone, speech, or
tone/speech messages. This can be accomplished via an alarm number entered manually or selected from
an alias list that can be scrolled from the deskset’s LCD display. In addition to activating the alarm, the
operator can direct the alarm to a specific stanchion or speaker assembly, zone, or all units by first
selecting the desired zone or address.
One-button Alarms –The Desktop Controller will allow activation of up to 8 individual alarms that can
be programmed to send a specific alarm/message to a specific location at the press of a button. This is an
excellent application for alarms/messages that may affect the entire campus.
Voice Broadcast Override –The Desktop Controller will allow the operator to broadcast over top of an
alarm already in progress. The system will automatically mute or reduce the alarm level for the duration
of the voice broadcast, then resume the alarm broadcast at normal level after the voice broadcast is
complete.
Alarm Monitor –All alarms/messages generated by the AMI and broadcasted to the stanchion and/or
speaker assemblies will also be heard in the Desktop Controller’s integral speaker or the handset receiver
(if off hook). This provides the operator the assurance that the alarm is active and the ability to hear
exactly which alarm is being broadcast. Any dial-up telephone audio will also be heard via the integral
speaker or handset receiver.

Broadcast Deactivation –The Desktop Controller is equipped with a “Deactivate” pushbutton that,
when pressed, will immediately deactivate all speakers assemblies and return them to their sleep or rest
state. This will allow for manual deactivation of the speaker assemblies if an erroneous signal is keeping
the speakers’ amplifier circuits active (line noise, RF interference, etc.).
The Model ACC2500 Desktop Controller can be programmed to display each zone as an alias on its LCD
display. Alias simply means a “name” for the zone or address. The same can be programmed for each
individual unit. To broadcast a pre-programmed message/alarm to a specific zone or unit, the Desktop
Controller operator will press the Zone UP or DOWN button to locate the desired zone, press the Alarm
UP or DOWN button to locate the desired alarm (evacuate, tornado, all clear, etc.), the press the
TRANSMIT button. The alarm will begin broadcasting only in the selected zones or units. The audio
that will be heard from each speaker or stanchion selected will also be heard over the Desktop
Controller’s integral speaker. If the handset if off-hook, this audio will be heard over the handset receiver
(earpiece). The message/alarm will play for the duration it has been programmed to broadcast or until the
DEACT button is pressed to deactivate all units.
If a the Desktop Controller operator desires to broadcast a live voice message while a pre-programmed
message/alarm is in progress, they simply press the transmit button and talk or lift the handset from its
cradle and talk while pressing the handset pressbar. The pre-programmed message/alarm audio level will
be reduced or muted (depending on programming) for the duration of the live voice broadcast
(TRANSMIT button or pressbar must be activated during live voice broadcast). Releasing the
TRANSMIT or pressbar will allow the pre-programmed message/alarm to return to normal volume.
If the Desktop Controller operator desires to simply broadcast a live voice message, they must select the
zone alias or enter the desired zone code via the keypad, press and hold the TRANSMIT button (or
handset pressbar), and begin speaking when “TALK NOW” appears in the LCD display.
Model 10959-903 Audio Messenger Interface
The Model 10959-903 Audio Messenger Interface (AMI) provides superior quality digital tone/speech
generation and telephone interface and feedback elimination capability. A Compact Flash™ Card Kit
stores the configuration programming, the voice and tone recordings, and provides CD-quality sound
reproduction.
Direct RS232 access from the Model ACC2500 Desktop Controller allows control of up to 125 pre-
recorded tone, speech, or tone/speech messages. Each alarm/message can be programmed for continuous
play, timed duration, or number of repeat cycles. Pre-recorded speech messages can be wave file or MP3
format.
LIVE VOICE TELEPHONE SYSTEM ACCESS
In addition to the head-end controller operation, the system can be accessed via the campus telephone
system. An extension number would need to be provided for telephone access. Upon dialing this
number, the telephone operator would receive verbal instructions followed by a splash tone. Upon receipt
of the splash tone, the operation will dial the DTMF access code of the desired voice broadcast location.
As with the deskset, this can be an individual stanchion assembly, a zone or group, or all stanchion
assemblies. This is a voice broadcast operation only, as no alarms can be activated from the telephone.
The public address system can also be accessed from an existing VHF (154 - 174 MHz) or UHF (450 -
470 MHz) radio system. Radio equipment with integral DTMF keypads (DTMF encode) is necessary to
perform the live voice access. The same DTMF codes utilized by the telephone system operation
previously mentioned will be utilized by the radios. The radio operator would simply select the operating
frequency and, while engaging the PTT, transmit the DTMF code and begin speaking into the radio
microphone. This is a voice broadcast operation only, as no alarms can be activated from a radio.

HARD-WIRED SYSTEM w/RADIO ACCESS INTERCONNECTION DIAGRAM
The Hard-wired System w/Radio Access Interconnection Diagram depicts the signal flow and operation.
The ACC2500 Desktop Control Station communicates with the 10959-903 Audio Messenger Interface to
send pre-recorded or live audio to the main Audio Distribution Cabinet (ADC). The main ADC amplifies
the signal and passes it through to another ADC, amplified speakers, stanchion broadcast products, or PA
interfaces. Only those assemblies programmed for the transmitted DTMF access code will activate and
broadcast the received audio. Any radio in the system, if equipped with a DTMF keypad, has the ability
to access the system for live voice broadcasts. Additionally, live voice broadcasts can be initiated from
the existing telephone system. The same DTMF access codes will be used for both RF and telephone
broadcasts.
For example purposes, the system noted on the interconnection diagram has been divided into three
distinct areas or Zones; Zone 1, Zone 2, and Zone 3. Each zone includes the following areas:
Zone 1 includes Zone 1 (Bldg. 1 and Bldg. 2) and the Stanchion Broadcast Assembly and
Addressable Amplified Speaker located in the North Parking Lot area (access code 1001)
Zone 2 includes Building 1 and Building 2 only (access code 1002)
Zone 3 includes both internal and external speakers located in/on Building 3 and the
Stanchion Broadcast Assembly located in the South Parking Lot area (access code 1003)
All Zones (access code 2222)
Note: Access codes used in the example are arbitrary and can be programmed for 2 to 8 digits
(all codes must be the same number of digits).
Each device installed in the example system will be programmed for a minimum of three access codes
(individual, zone, all). The speakers installed at buildings 1 and 2 will be programmed for four codes, due
to the fact that they are part of two separate zones. Building 1 and Building 2 each have two speakers
mounted to them. These two buildings, combined with a Stanchion Broadcast Assembly and an
Addressable Amplified speaker located near the North Parking Lot, are considered Zone 1. Building 1
and Building 2, as a stand-alone entity, are considered a zone itself (Zone 2). Transmitting the Zone 1
access code would cause all four speakers on the buildings, the stanchion, and the single amplified
speaker to broadcast. If the access code for Zone 2 is transmitted, only the speakers on Buildings 1 and 2
would broadcast. It is also possible to access any single speaker or stanchion within these zones, if
desired.
For the sake of simplicity and understanding, we’ll assume that the desired operation is to enter a DTMF
code and perform a live voice page. Here are the steps needed from each broadcasting device (Desktop
Controller, telephone, radio). In this scenario, the person broadcasting intends to perform a live voice
broadcast into Zone 1 (code 1001).
ACC2500 Desktop Controller: - Press the CALL button
-Enter the code 1001 via the keypad (will be seen in the LCD display)
-Press and hold the TRANSMIT button or handset pressbar
-Begin speaking when TALK NOW appears in the LCD display
-Release the TRANSMIT button or handset pressbar when complete
Telephone: - Dial the extension assigned to system access
-Wait for voice instructions and splash tone, then dial the code 1001
and begin speaking
-Hang up when broadcast is complete
Radio: - Select the associated operating frequency on the radio
-Press and hold the PTT switch while entering the code 1001
-Still holding the PTT switch, speak into the radio
-Release the PTT switch when broadcast is complete

The described operation allowed each operator to generate a live voice broadcast into Zone 1 (Buildings 1
and 2 and the North Parking Lot). To broadcast only into Zone 2 (Buildings 1 and 2), enter 1002; Zone 3
(Building 3 and the South Parking Lot), enter 1003.To broadcast to all zones, code 2222 would be
entered. Assuming the amplified speaker located in the North Parking lot has an access code of 3001,
entering this code will access only this speaker. Note that this is the access code that would be used to
remotely adjust this unit’s output volume.