GAI-Tronics ACC2500 Manual - Página 3

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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.