Gilderfluke&Co PA System - Manual (Page 7)

phone to the PA stations. The pin out is as follows:
1) Microphone
2) Microphone
3) Push To Talk (PTT) switch
4) Push To Talk (PTT) switch
The microphone gain control on each of these stations is used to adjust for individual mi-
crophones used with the system. It should be set to where normal audio levels are not
clipped on the outputs.
The buttons on the face of any four button PA stations can also be configured to mute
any full or half mute zone or raise or lower the volume of any volume control zone.
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. Up
to 18 pushbuttons are normally located on the microphone. Any button can be configured
to request any mute or half-mute zone, send commands to one or more Digital Audio
Repeaters, or ramp the volume of any volume control zone up or down. For those PA
Stations which need access to more features than this number of buttons would allow, a
numeric-style entry is used to give them access to any features which you have enabled.
4) The Phantom PA Stations are used for automated announcements and automated 'emer-
gency' spiels. In this application, instead of having a microphone attached to it, the
Phantom PA Station uses the output of one of the Digital Audio Repeater / Mixer cards (or
other source) as its input. This card is usually configured in the 'loop while' mode so that it will
loop as long as the start input is active. The enabling input for the Phantom PA Station comes
from the 'running status' output of this Digital Audio Repeater / Mixer card. When the
Repeater with the automated spiel on it is started by a switch closure on its start input, it au-
tomatically selects the required PA Zone through the Phantom PA Station. The spiel will con-
tinue until the enabling signal is released and the spiel has finished. In emergency spiel ap-
plications, you may want to assign the Phantom PA Station a fairly low priority so that a live
person giving useful information can easily 'step' on the canned spiel. If the audio system is
being controlled by a serial data link from another computer or control system, serial com-
mands can be used to select and start canned spiels and route them to the desired PA
Zones.
Messages which are recorded for use with the Phantom PA Stations should allow a sec-
ond or two at their starts to allow time for the BGM volume levels to ramp down as the PA an-
nouncement levels ramp up. The actual amount delay needed depends on the ramp rates
you have set in the PA Master.
The wiring needed by any PA Station is a single eight conductor modular style telephone cable. This
will normally provide all the power, communications, and audio signals to the PA Station. On some
longer runs (greater than 2500 feet), it may be necessary to add a local power supply to some PA
Stations. If absolute silence is required on the PA audio channel, then a shielded twisted pair is recom-
mended for the microphone line.
All wires between the PA Stations and the MA-100 or MA-200 panels are transformer or opto-isolated.
MOV varistors can be used between each of the wires and chassis (earth) ground to provide lightning
protection if needed. Facing the end of the cable with the release latch upwards, its pin out is as follows:
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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