Northern Airborne Technology PIA01-001 - Manual (Page 4)

PIA01-001 Passenger Intercom Amplifier
SM78 Installation and Operation Manual
Section 1 Rev: 1.00
Issue 1 Page 1-1
ENG-FORM: 800-0116.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
Section 1 Description
1.1 Introduction
Information in this section consists of product description, design features and specifications for the
PIA01-001 Passenger Intercom Amplifier (PIA01). All derivative product information shall be contained in
the applicable manual supplement, which may be obtained from Northern Airborne Technology Ltd. as
required.
Review all notes, warnings and cautions.
Note
: This manual contains information applicable to units MOD 4 and above.
1.2 Product Description
The PIA01 is a remote mounted Passenger Intercom Amplifier that supports up to twelve passengers
together on one intercom system (six headset connections on the PIA01, each supporting two headsets
in parallel, if desired). Expansion capabilities are provided through either an analog or digital ICS Tie Line
connection. Only one of these ICS Tie Lines is operational at any given time.
1.3 Design Features
The PIA01 has a number of configurable system parameters providing flexibility for customized
applications. The PIA01 can be configured to support one of three microphone impedances and one of
three headphone impedances. The microphone and headphone impedances selected will apply to all of
the PIA01 users. The headphone outputs will support mono headsets. The microphone audio is
summed together as one group.
The PIA01 is initially intended for application with the Northern Airborne Technology (NAT) Digital Audio
Communication System (DACS). In this configuration, the PIA01 provides intercom audio with the
passengers of the Audio Management Unit (AMU) within the DACS system via the digital ICS Tie Line.
The PIA01 communicates with the AMU using a serial data port. All intercom audio between the PIA01
and AMU is digitized and passed over the serial data port. When used with the DACS, the PIA01 system
parameters are configured using a Personal Computer (PC) connected to the AMU via a Universal Serial
Bus (USB) serial port and NAT supplied DACS Device Configuration software. The PIA01 intercom audio
level and VOX level matches the corresponding levels heard by the passengers connected to the AMU.
The PIA01 can also be used as a stand-alone Passenger Intercom Amplifier. In this configuration, the
PIA01 enables the analog ICS Tie Line for intercom communication with external devices. Microphone
and headphone impedances are selected via discrete inputs on the PIA01 external connector. Intercom
audio and VOX levels are adjusted via discrete inputs on the PIA01 external connector.
The PIA01 also features a stereo music input. The stereo signal is summed to a mono signal and routed
to all headphone outputs. The music input level is configurable to support portable or automotive input
levels via discrete inputs on the PIA01 external connector.