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JA95-N22 Audio Controller - Flight Crew - NVG
SECTION 1 - DESCRIPTION
1.1
System Overview
The JA95-N22 Audio Controller - Flight Crew - NVG is a centralized audio management system that distributes and
controls all transceiver, receiver and alert audio in an aircraft. It enables the selected transmission of microphone
audio to a transceiver and distributes all intercom audio.
The JA95-N22 Audio Controller - Flight Crew - NVG can be used in a standalone configuration or a star configuration
to prevent the loss of the entire system due to the failure of one controller. It provides a passive emergency mode
that directs the primary user (pilot) to the COM1 transceiver, NAV1 receiver and Direct Audio receiver.
The JA95-N22 is set up on a per-installation basis using a configuration cable and a PC running the product
configuration tool to download system configuration settings via the front panel music / configuration connector (
♫
/io)
without the necessity of removing the unit from the panel. To facilitate future customizations and certification, no
software or complex electronic devices are used in the JA95-N22 design.
1.2
Features Overview
The JA95-N22 features a 37-pin D-Sub connector, which interfaces with the radio receive audio and crew phones, a
50-pin D-Sub connector which interfaces with the power and passenger headset connections. This layout minimizes
crosstalk and follows industry standard interconnect for multi-user Audio Controllers.
Many of the input and output levels are adjustable, several audio paths are selectable, and alert audio analog
waveforms can be loaded using the configuration program ProCS™ (
Pro
duct
C
onfiguration
S
oftware) to write
configuration commands via the JA99-001 configuration cable to the front panel music / configuration connector. The
audio waveforms are stored in non-volatile devices.
The JA95-N22 provides intercom functions for up to seven users. It supports up to 6 transceivers, each selectable
from a rotary switch, and up to 5 receivers (two on one toggle switch and three on another).
The JA95-N22 features individual VOX gating, and supports
two
Direct Audio input
s
to provide audio at a fixed level to
the users.
The JA95-N22 has a CVR output and a
C
al
l Alert Generator.
The JA95-N22 allows transmit access for
two
crew members (Pilot
and
Co-pilot).
A Music / Configuration connector is provided on the faceplate of the JA95 for configuration of audio levels and
routing. The port can also be used as a music input and is compatible with most music players.
The JA95-N22 has two modes of operation: Normal Mode and Emergency Mode.
The JA95-N22 is NVIS Type I Class B compliant.
The JA95-N22 has a
n external
ICS Tie Line that is enabled or disabled by a switch on the front panel.
