Audio International PA-9075-x01-x Installation Manual - page 6
PA-9075-x01-x Installation Manual
Document # 540312, Rev A, 01/2006
Page 5 of 15
2.3
State Priorities
Passenger Address — Highest Priority. Activating the PA system (PA
KEY) overrides all other states, so that the passenger address is the only
thing transmitted through the speakers.
Cabin Briefer — Second Highest Priority. Activating the cabin briefer
(BRIEFER KEY) will override all other states except Passenger Address.
Call in, Chime in, TT Chime in, and Low Tone are next in priority.
Activation of one of these functions overrides any previous state except
Passenger Address or Briefer. If the previous state has equal priority, the
new state assumes priority.
If none of the above states are active, Cabin Entertainment Audio is
routed to the amplifier.
2.4
Three (3) selectable ID inputs providing the capability to independently
address up to eight (8) units on the same data bus network.
2.5
The module is designed to interface with typical cockpit audio systems as
a stand-alone Passenger Address Amplifier, or to be integrated with Cabin
Management Systems as part of an integrated cabin entertainment
system.
2.5.1 Audio Input (Digital) — Typical interfaces include various types of
audio source equipment. This unit is capable of interfacing and
accepting input from Audio International and standard COTS
(Commercial-Off-The-Shelf) audio source equipment using the
AES-3 digital audio standard.
2.5.2 Audio Input (Analog) — The module accepts microphone and
standard line-level audio in the PA mic, and briefer inputs,
respectively. If needed, a +12V MIC BIAS pin is available.