Northern Airborne Technology PA110 User Manual
Installation and Operation Manual
PA110/220
High Power Audio Amplifiers
SM35
ISSUE 4.01
Northern Airborne Technology Ltd.
1925 Kirschner Road
Kelowna, BC, Canada.
V1Y 4N7
Telephone (250) 763-2232
Facsimile (250) 762-3374
Issued on the authority of Northern Airborne Technology Ltd.
Copyright 2004
PA110/220 High Power Audio Amplifiers
SM35 Installation and Operation Manual
Prepared By: Checked By: 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
4.00 n/a Manual split into two sections May 15, 2006
Section
Revision Number
Revision Description Issue Date
4.01 Section 1 Rev: 1.00
Section 2 Rev: 1.00
Section 3 Rev: 1.00
Rewritten in latest format
New Interconnect drawings
Sep 24, 2008
Installation and Operation Manual Page ii
ENG-FORM: 820-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
PA110/220 High Power Audio Amplifiers
SM35 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 1-1
1.4.1 Electrical Specifications 1-1
1.4.2 Physical Specifications 1-2
1.4.3 Environmental Specifications 1-2
1.5 Unit Nomenclature 1-2
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 2-1
2.4.2 Cautions 2-2
2.4.3 Cabling and Wiring 2-2
2.4.4 External Switches 2-2
2.4.5 Post Installation Checks 2-2
2.5 Accessories Required But Not Supplied 2-3
2.5.1 PA110 Installation Kit (PA110-IKS) 2-3
2.5.2 PA220 Installation Kit (PA220-IKS) 2-3
2.6 Installation Drawings 2-4
3. Operation
3.1 Introduction 3-1
3.2 General Information 3-1
Installation and Operation Manual Page iii
ENG-FORM: 820-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
PA110/220 High Power Audio Amplifiers
SM35 Installation and Operation Manual
Section 1 Description
1.1 Introduction
Information in this section consists of product description, design features and specifications for the
PA110/220 High Power Audio Amplifiers. All derivative product information shall be contained in the
applicable manual supplement, which may be obtained from NAT as required.
Review all notes, warnings and cautions.
1.2 Product Description
The PA110 and PA220 High Power Audio Amplifiers are remote mounted modular amplifiers capable of
producing 110 W of output power, and can be used in conjunction with NAT’s Loudhailer/Siren systems.
Lower power systems (30 W) are usually used for sling load control and lo cal external paging in smaller
airframes, or internal rear paging in larger airframes. Higher power systems (110 W and up) are used for
law enforcement and long distance external paging applications. The PA110/220 can be chained into
multiple installations, allowing up to half a kilowatt of audio to be controlled by a single panel mounted
controller.
1.3 Design Features
Provision is made for external power switching to activate PA110 and PA220 High Power Audio
Amplifiers for increased power output.
All external interconnects, switches and relay contacts are gold plated for maximum reliability. Switches and
relays are sealed. G10-FR flame retardant circuit boards are postcoated for maximum moisture resistance
and corrosion prevention. Relays are sealed, hig h vibration rated (50g shock) and dry nitrogen fill ed.
1.4 Specifications
1.4.1 Electrical Specifications
1.4.1.1 PA110
Power +28 Vdc nominal at 5.5 A max; Idle current less than 0.1 A
Low Level Input Impedance 600 Ω ±5%
High Level Input Impedance 300 Ω ±5%
Output 100 W nominal @ 1 kHz into 10 Ω, Transformer coupled
1.4.1.2 PA220
Power +28 Vdc nominal at 10 A max; Idle current less than 0.1 A
Low Level Input Impedance 600 Ω ±5%
High Level Input Impedance 300 Ω ±5%
Output 2 x 100 W nominal @ 1 kHz into 10 Ω, Transformer coupled
Section 1 Rev: 1.00 Issue 4 Page 1-1
ENG-FORM: 800-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
PA110/220 High Power Audio Amplifiers
SM35 Installation and Operation Manual
1.4.2 Physical Specifications
Height 4.10" (104.1 mm)
Depth 6.32" (160.5 mm) excluding mating connector
Width 7.90" (200.7 mm)
Mounting Bulkhead, using 4 x AN3 bolts
Weight:
PA110 4.6 lbs (2.09 kg) excluding mating connector
PA220 7.75 lbs (3.52 kg) excluding mating connector
1.4.3 Environmental Specifications
Temperature -45° to +50° C (Ambient)
Altitude 25,000 ft. Maximum
1.5 Unit Nomenclature
The following list indicates the models available at the date of publication of this document. Other models
may be available.
Model Description / Distinction
PA110-015 High and low level inputs
Optional audio key input
Remote power keying
Power and level indicators
Local level adjustment
Used with AA21 and AA22 controllers.
PA220-010 High and low level inputs
Optional audio key input
Remote power keying
Dual level indicators and level adjustment
Dual 110 W outputs with individual control and
fusing for full redundancy.
Mechanically interchangeable with PA110-015
(different interconnect).
Used with AA21 and AA22 controllers.
Section 1 ends
Section 1 Rev: 1.00 Issue 4 Page 1-2
ENG-FORM: 800-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
PA110/220 High Power Audio Amplifiers
SM35 Installation and Operation Manual
Section 2 Installation
2.1 Introduction
Information in this section consists of unpacking and inspection procedures, installation procedure s, po stinstallation checks and installation drawings for the PA110/220 High Power Audio Amplifiers.
Review all notes, warnings and cautions.
2.2 Unpacking and Inspection
Unpack the equipment carefully and locate the warranty card. Inspect the unit visually for damage due to
shipping and report all such claims immediately to the carrier involved. Check that all items listed below
are present before proceeding and report any shortage immediately to your supplier:
- Warranty Card
- Certificate of Conformity or Release Certification
2.2.1 Warranty
All Northern Airborne Technology Ltd. products are warranted for 2 years from date of installation by an
authorized NAT dealer, to be free of defects in workmanship or performance. This warranty covers all
materials and labour, but is exclusive of any transport to deliver the defective unit to and from NAT or its
designated warranty repair center, or any labour to remove or re-install the defective unit in the aircraft.
Contact NAT for any questions regarding this warranty, its applicability to your units and/or for return
authorization. NAT is the final arbitrator concerning warranty administration. Units which have been
physically damaged, burned, immersed in water or otherwise abused beyond the scope of normal use will
not be considered for warranty. WARRANTY IS VOID UNLESS THE PRODUCT IS INSTALLED BY AN
AUTHORIZED NAT DEALER. Product for which a warranty card is not returned shall be warranted from
date of manufacture.
2.3 Continued Airworthiness
Maintenance of the PA110/220 is ‘on condition’ only. Periodic maintenance of this product is not required.
2.4 Installation Procedures
2.4.1 Warnings
WARNING:
Never ground any output line from the unit or permanent damage may result.
Use of a fully floating audio wattmeter or transformer coupled meter is
recommended. Always check ADF and compass calibration after installing
external speakers or ‘PA’ amplifiers. Significant single cycle errors may be
caused by the concentration of steel and magnetic material. Do not bundle
any lines from these units with transmitter coax lines. Do not bundle any lines
from this unit with 400 Hz synchro wiring, or AC power lines.
Section 2 Rev: 1.00 Issue 4 Page 2-1
ENG-FORM: 805-0117.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
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