Northern Airborne Technology PIA01-001 User Manual

Installation and Operation Manual

PIA01-001

Passenger Intercom Amplifier

SM78

ISSUE 1.00

Northern Airborne Technology Ltd.

1925 Kirschner Road

Kelowna, BC, Canada.

V1Y 4N7

Telephone [phone]

Facsimile [phone]

Issued on the authority of Northern Airborne Technology Ltd.

Copyright 2010

PIA01-001 Passenger Intercom Amplifier

SM78 Installation and Operation Manual

Prepared By: Checked By: Certification: Approved By:

The status of this installation and operation manual is controlled by issue shown on the title page. The
status of each section is controlled by revision shown in the footer of each page. All revisions affecting
sections of this manual have been incorporated into the latest issue.

ISSUE/REVISION RECORD

Manual Issue

Number

Section

Revision Number

Revision Description Issue Date

1.00 Section 1 Rev: 1.00

Initial release Mar 15, 2010
Section 2 Rev: 1.00
Section 3 Rev: 1.00

Installation and Operation Manual Page ii

ENG-FORM: 820-0115.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.

PIA01-001 Passenger Intercom Amplifier

SM78 Installation and Operation Manual

Table of Contents

Section Title Page

1. Description

1.1 Introduction 1-1

1.2 Product Description 1-1

1.3 Design Features 1-1

1.4 Specifications 1-2

1.4.1 Electrical Specifications 1-2

1.4.2 Physical Specifications 1-5

1.4.3 Environmental Specifications 1-6

1.4.4 Product Approval 1-6

2. Installation

2.1 Introduction 2-1

2.2 Unpacking and Inspection 2-1

2.2.1 Warranty 2-1

2.3 Continued Airworthiness 2-1

2.4 Installation Procedures 2-1

2.4.1 Warnings 2-2

2.4.2 Cautions 2-2

2.4.3 Mounting 2-3

2.4.4 Cabling and Wiring 2-3

2.4.5 Post Installation Checks 2-6

2.5 Adjustments and Connections 2-6

2.6 Accessories Required But Not Supplied 2-7

2.7 Installation Drawings 2-7

3. Operation

3.1 Introduction 3-1

3.2 General Information 3-1

Installation and Operation Manual Page iii

ENG-FORM: 820-0115.DOT

CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.

PIA01-001 Passenger Intercom Amplifier

SM78 Installation and Operation Manual

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.

Section 1 Rev: 1.00 Issue 1 Page 1-1

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PIA01-001 Passenger Intercom Amplifier

SM78 Installation and Operation Manual

1.4 Specifications

1.4.1 Electrical Specifications

Input Signals

Input Power

Normal Operating Conditions:

Abnormal Operating Conditions:

Input Current: 2.0 A maximum @ 28.0 Vdc

Nominal: +28.0 Vdc
Maximum: +30.3 Vdc
Minimum: +22.0 Vdc
Emergency: +18.0 Vdc

Maximum: +32.2 Vdc
Minimum: +20.5 Vdc

Microphones

(PAX1 MIC through PAX6 MIC)

Three microphone impedances are available. All microphone inputs are configured to the same
impedance setting via the digital ICS Tieline (digital mode) or jumper settings (analog mode).

Quantity: 6
Gain Adjustable from -9 dB to +6 dB of nominal input level, +/- 1dB

with 15 steps of adjustment (digital mode only).

Microphone (Type One) dynamic
Rated Level: 250 µVrms nominal to produce rated headphone output
Impedance: 5 Ω ±30%
Circuitry Type: differential

Microphone (Type Two) dynamic
Rated Level: 850 µVrms nominal to produce rated headphone output
Impedance: 75 Ω ±30%
Circuitry Type: differential

Microphone (Type Three) amplified dynamic/electret
Rated Level: 250 mVrms nominal to produce rated headphone output
Impedance: 150 Ω ±10%
Circuitry Type: single ended
Mic Bias: 24 mA (TSO configuration)

Stereo Music

(MUSIC R and MUSIC L)

Quantity: 1
Lo Level Input: 400 mVrms +/-10%
Hi Level Input: 2.5 Vrms +/-10%
Input Impedance: 1 kΩ ±10%
Circuitry Type: differential

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ICS Keylines

Quantity: 6
Logic: active LO, no external pull up required
Input Active: ≤+3 Vdc
Maximum Current: ≤10 mA
Input Protection: diode protected to +45 Vdc maximum

PIA01-001 Passenger Intercom Amplifier

SM78 Installation and Operation Manual

(PAX1 ICS KEY through PAX6 ICS KEY)

Headphone Impedance Discrete Input

Quantity: 1

(PHN IMPEDANCE)

8 Ω: Logic: active HI, no external resistor required
Input Active: ≥+17.5 Vdc
Maximum Current: ≤15 mA
Input Protection: diode protected to +45 Vdc maximum

150 Ω: Logic: active Floating
Input Active: No connection
Maximum Current: N/A
Input Protection: diode protected to +45 Vdc maximum

600 Ω: Logic: active LO, no external pull up required
Input Active: ≤+3 Vdc
Maximum Current: ≤10 mA
Input Protection: diode protected to +45 Vdc maximum

Microphone Impedance Discrete Input

Quantity: 1

(MIC IMPEDANCE)

5 Ω: Logic: active HI, no external resistor required
Input Active: ≥+17.5 Vdc
Maximum Current: ≤15 mA
Input Protection: diode protected to +45 Vdc maximum

75 Ω: Logic: active Floating
Input Active: No connection
Maximum Current: N/A
Input Protection: diode protected to +45 Vdc maximum

150 Ω: Logic: active LO, no external pull up required
Input Active: ≤+3 Vdc
Maximum Current: ≤10 mA
Input Protection: diode protected to +45 Vdc maximum

ICS Tie Line Load Discrete Input

(NAT ICS LEVEL)

Quantity: 1

2 Loads: Logic: active LO, no external pull up required

Input Active: ≤+3 Vdc
Maximum Current: ≤10 mA
Input Protection: diode protected to +45 Vdc maximum

4 Loads: Logic: active Floating
Input Active: No connection
Maximum Current: N/A
Input Protection: diode protected to +45 Vdc maximum

Section 1 Rev: 1.00 Issue 1 Page 1-3

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CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.

PIA01-001 Passenger Intercom Amplifier

SM78 Installation and Operation Manual

Music Level Discrete Input

Quantity: 1

Lo level: Logic: active LO, no external pull up required

Input Active: ≤+3 Vdc
Maximum Current: ≤10 mA
Input Protection: diode protected to +45 Vdc maximum
Hi level: Logic: active Floating
Input Active: No connection
Maximum Current: N/A
Input Protection: diode protected to +45 Vdc maximum

(MUSIC LEVEL)

Intercom Volume Discrete Input

VOL INC: Logic: active LO, no external pull up required
Input Active: ≤+3 Vdc
Maximum Current: ≤10 mA
Input Protection: diode protected to +45 Vdc maximum

VOL DEC: Logic: active LO, no external pull up required
Input Active: ≤+3 Vdc
Maximum Current: ≤10 mA
Input Protection: diode protected to +45 Vdc maximum

VOX Level Discrete Input

VOX INC: Logic: active LO, no external pull up required
Input Active: ≤+3 Vdc
Maximum Current: ≤10 mA
Input Protection: diode protected to +45 Vdc maximum

VOX DEC: Logic: active LO, no external pull up required
Input Active: ≤+3 Vdc
Maximum Current: ≤10 mA
Input Protection: diode protected to +45 Vdc maximum

Output Signals

(VOLUME INC/VOLUME DEC)

Quantity: 2

(VOX INC/VOX DEC)

Quantity: 2

Headphones

(PAX1 PHONES through PAX6 PHONES)

Three impedances are available. All headphone outputs are configured to the same impedance
setting via the Digital ICS Tieline (digital mode) or jumper setting (analog mode).

Quantity: 6 mono headphone outputs
Rated Output: ≥250 mW into rated load
Circuitry Type: balanced

Headphone (Type One)
Load Impedance: 8 Ω ±10%
Output Impedance: ≤2.25 Ω

Headphone (Type Two)
Load Impedance: 150 Ω ±10%
Output Impedance: ≤20 Ω

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CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.

PIA01-001 Passenger Intercom Amplifier

SM78 Installation and Operation Manual

Headphone (Type Three)
Load Impedance: 600 Ω ±10%
Output Impedance: ≤60 Ω

Bi-Directional Signals

Digital ICS Tie Line

(ICS TIE TX/ICS TIE RX)

Serial Data Port:

Quantity: 1
Specification: RS422
Serial Data Protocol: S/PDIF

Analog ICS Tie Line

(NAT ICS TIE)

Quantity: 1
Port Impedance: 2 kΩ ±15%
Rated Level: 230 mVrms nominal, (2 loads)
136 mVrms nominal, (4 loads)
Circuitry Type: balanced

1.4.1.1 Audio Performance

The PIA01-001 meets the requirements of FAA TSO-C139 and RTCA/DO-214 Class Ib.

Audio Frequency Response: <3dB from 300 - 6000Hz

Volume Controls: 40dB of adjustment (intercom audio)

Crosstalk: >55dB attenuation from rated output power for input to output

crosstalk and bleedthrough.

>60dB attenuation from rated input level for input to input

crosstalk (except for stereo Music left and right channel inputs).

1.4.2 Physical Specifications

Height: 34.3 mm (1.35 in) maximum

Depth: 201.9 mm (7.95 in) maximum

Width: 168.9 mm (6.65 in) maximum including flanges

Weight: 0.72 kg (1.65 lbs.) maximum

Material and Finish: Brushed aluminium, conversion coated

Connectors: 1 x 50 pin D-Sub, male; Jackpost locking hardware

Installation: RS-422 Cable: 20.0 m (785.9 in) maximum

MIC Cable: 5.0 m (196.7 in) maximum
PHN Cable: 5.0 m (196.7 in) maximum

Mounting: Bulkhead Mount (four 10-32 screws)

Section 1 Rev: 1.00 Issue 1 Page 1-5

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CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.