Gilderfluke&Co old MACs 8 bit Digital Audio System - Manual (Page 15)

Audio Processing:
DR-300 or DR-400 Repeater cards add:
1) Voltage Controlled Amplifier (VCA)
2) Intelligent PA System support
The VCA can be used to remotely control the volume of the audio produced by the card (or fed to it
from an outside source) with any 0 to 10 VDC control signal, or from the Intelligent PA System
If these cards are used with the Intelligent PA System, they can be configured to respond to full-mute
commands, half-mute commands, or to volume control zone signals from the MA-100 PA System Master.
There are eight full and half-mute zones available. Any individual card can be told to respond to any
number of these zone commands. There are also eight volume control zones available. Any individual
card can be told to respond to any one of the eight volume control zones or to the external VCA input
available on each card.
The DR-400 is used when you need to send an audio signal from an external source through Voltage
Controlled Amplifiers (VCAs), Intelligent Public Address System, and Shelving Equalizers.
Intelligent Public Address System:
The Intelligent Public Address System is used where a powerful and flexible zoned Public Address
System is needed. It can be used with our DR-300 and DR-400 Digital Audio Repeater cards or in stand
alone installations.
The PA system consists of one PA Master, one PA Interface Panel for each eight PA stations (the first
one is part of the PA Master), and the PA Stations themselves. These are available in four different styles:
1) One Button PA Stations use the microphoneÕs Push To Talk (PTT) button to select any one of the
PA zones.
2) The Four Button PA stations can select any of four different PA zones, plus one more with the
microphoneÕs PTT button. You can tell the buttons on these stations to latch the zone
requested, only momentarily select the zone, or latch it until the next time the PTT button is
released.
3) The Smart PA stations can be set up to access all of the features in the entire audio system,
including any Digital Audio Repeaters, Animation Control Systems, and volume control zones
which happen to be attached to it. They are available with backlit LCD displays on them. Their
pushbuttons are normally located on the microphone itself.
4) Phantom PA Stations are used to tie a Digital Audio Repeater to the PA system in order to make
automated announcements. When the Repeater is triggered, it will select a PA zone and feed
the audio output from the repeater to the selected zone.
Each PA Interface Panel has connections for eight PA stations, eight balanced ÔlocalÕ PA outputs, and
one (optionally eight) balanced Back Ground Music (BGM) inputs. The BGM is normally fed to the eight
local PA outputs. When one of these responds to a PA zone request, the PA announcement is fed to it as
the BGM is half-muted. Each local PA output can respond to four different prioritized PA zone requests.
The Intelligent Public Address System features include:
¥ Up to 511 PA zones are available. Sixteen cross-zone announcements can be made at one
time, along with any number of local PA zone requests. These latter take place when any PA
station requests itÕs local PA output.
¥ Supports up to 256 PA stations. These are available in One Button, Four Button or Smart
models.
¥ All setup is done through easy to use menus using any PC or terminal. Configuration includes
selecting which zones any PA station button will select, and the normal, half-muted, and PA
announcement volumes for the local PA outputs. A key lock and battery protects the
configuration data from unauthorized access and power failure.
G ILDERFLUKE & C o . ¥ 205 S OUTH F LOWER S T . ¥ B URBANK , C ALIF . 91502-2102 ¥ 818/840-9484 ¥ FAX 818/840-9485
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