Design and Construction Handbook - Los Angeles World Airports

Guide Specification
PAGING SYSTEMS
27 51 13 - 13
d. If the portion is busy, selecting the desired zone group will automatically enter that
microphone station into the queue (first-in/first-out).
e. The red ‘BUSY’ LED shall begin to flash, acknowledging acceptance of the
microphone station into the queue.
f. When the microphone station gets to the top of the queue, the beeper shall beep
and the green LED shall illuminate, indicating that the microphone station is
available for the announcement.
g. The normal procedure for making an announcement on the microphone station
type being used shall be resumed before the cessation of the beeps.
U. Podium and supervisory microphone stations
1. Supervisory microphone stations shall have a twelve (12) button keypad for data entry
plus an LCD digital display.
a. Keypad entry shall enable them to select any zone group or prerecorded message
function in the system to which it has been given access by programming from the
computer keyboard.
b. Supervisory microphone stations shall have three non-announcement functions
available from the keypad by entry of a number sequence:
2. Keypad disable/enable.
3. Self test.
4. Internal oscillator ‘ON/OFF’ for system test purposes.
V. Gate microphone stations
1. Gate microphone stations shall consist of a push-to-talk microphone, microphone clip and
connector.
2. When a gate microphone is activated, it will activate the zone to which the associated
podium microphone is normally programmed to activate.
3. Connection to the public address system shall be via a connection to the podium station
with which the gate microphone is associated.
4. No access to preprogrammed announcements shall be available from the gate microphone
stations.
W. Telephone interface:
1. Telephone interface stations, when addressed from a tone type telephone, shall have
capabilities similar to those of the supervisory microphone stations.
Communication Systems