Northern Airborne Technology ACP53-001 User Manual
Installation and Operation Manual
ACP53-001
DACS Audio Control Panel
TX
VOX
EMER
EMER
BK-UP
BK-UP
ISO CALL
NORM
NORM
VOX
MIN
MIN
PRESET
PRESET
PTT
PTT
ICS
ICS
ICS
ICS
TX
TX
ISO
ISO
CALL
CALL
ICSRX
ICSRX
SM75
ISSUE 1.02
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 2009
ACP53-001 DACS Audio Control Panel
SM75 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 1-3
1.4.3 Environmental Specifications 1-3
1.4.4 Product Approval 1-3
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 Mounting 2-2
2.4.5 Legend Installation 2-3
2.4.6 Custom Designation Cross-Reference List 2-3
2.4.7 Post Installation Checks 2-3
2.5 Adjustments 2-4
2.6 Accessories Required But Not Supplied 2-4
2.6.1 Installation Kit 2-4
2.6.2 Legend Installation Kit 2-4
2.7 Installation Drawings 2-5
3. Operation
3.1 Introduction 3-1
3.2 General Information 3-1
3.2.1 Operational Criteria 3-1
3.3 Pre-Flight Checks 3-1
3.4 Controls and Indicators 3-2
3.4.1 Built-In Tests (BITs) 3-2
3.4.2 Faceplate Illumination 3-2
3.4.3 Transceiver Radio Controls 3-3
3.4.4 Transmit Active Indicator 3-3
3.4.5 Receiver Radio Controls 3-3
3.4.6 Mode Control 3-4
3.4.7 VOX Threshold 3-5
3.4.8 Transmit Selector Switch 3-5
3.4.9 TX/ICS PTT Switch 3-5
Installation and Operation Manual Page iii
ENG-FORM: 820-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
ACP53-001 DACS Audio Control Panel
SM75 Installation and Operation Manual
Section Title Page
3.4.10 RX/ICS Volume Control 3-6
3.4.11 ISO/CALL Button 3-6
3.4.12 ISO Indicator 3-7
3.4.13 CALL Indicator 3-7
3.4.14 Transmit Features 3-7
Installation and Operation Manual Page iv
ENG-FORM: 820-0114.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
ACP53-001 DACS Audio Control Panel
SM75 Installation and Operation Manual
Section 1 Description
1.1 Introduction
Information in this section consists of product description, design features and specifications for the
ACP53-001 DACS Audio Control Panel (ACP53). 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 s/n 3000 and above. For information
applicable to units below s/n 3000 contact the product support department at NAT Ltd.
1.2 Product Description
The ACP53 is an Audio Control Panel from the Northern Airborne Technology Ltd. Digital Audio
Communication System (DACS).
The DACS is a communications management system that distributes and controls all of the audio in an
aircraft. It manages the audio from all transceivers, receivers and audio warning sources. It enables the
transmission of microphone audio to a selected transmitter and distributes all Inter-Communication
System (ICS) audio.
The ACP53 is a Dzus mounted unit that allows the operator to adjust the volume, select a transceiver and
select the system mode of operation. The audio control panel is a ‘terminal’ that monitors user switch
selections and level adjustments, passing them along to the Audio Management Unit (AMU50). It also
has several status indicators that illuminate when commanded to do so by the AMU. The ACP53
communicates with the AMU50 over a serial data port. All audio connections are made to the Audio
Management Unit where the audio processing is completed.
The Audio Management Unit is capable of supporting six Audio Control Panels. The system architecture
is set up in a star configuration to prevent loss of the entire system due to the failure of one connection.
The Audio Control Panel receives its power from the Audio Management Unit. Receiving power from the
AMU along with the serial data wiring decreases the complexity of the wiring in the aircraft and reduces
the number of breakers required for the audio system.
1.3 Design Features
The faceplate of the ACP53 incorporates replaceable legends for the receivers and the transceivers.
This enables the installing agency to change the names of the radios on individual units.
The ACP53-001 has NVIS Green B faceplate backlighting and annunciators.
Section 1 Rev: 1.02 Issue 1 Page 1-1
ENG-FORM: 800-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
ACP53-001 DACS Audio Control Panel
SM75 Installation and Operation Manual
1.4 Specifications
1.4.1 Electrical Specifications
Input Signals
Input Power
The ACP53-001 requires a conditioned Input Voltage supplied by an external
communications management unit such as the AMU50:
Nominal: 25.5 Vdc
Maximum Current: 0.25 A @ 25.5 Vdc
Night Mode Input
Activation of the Night Mode input places the ACP53 integral lighting into Night Mode. In
this state the lighting is dimmed to be suitable for viewing at night. The ACP53 remains in
Night Mode for at least 50 ms after the Night Mode input is deactivated.
Quantity: one
Logic: active LO, switched ground with no external pull up
Input Active: ≤3 Vdc
Current Draw: ≤100 mA
Input Protection: diode protected to +45 Vdc maximum
NVG Mode Input
Activation of the NVG Mode input places the ACP53 integral lighting into NVG Mode. In
this state the lighting is dimmed to be suitable for NVG viewing. The ACP53 remains in
NVG Mode for at least 50 ms after the NVG Mode input is deactivated.
Quantity: one
Logic: active LO, switched ground with no external pull up
Input Active: ≤3 Vdc
Current Draw: ≤100 mA
Input Protection: diode protected to +45 Vdc maximum
Lights
Quantity two mutually exclusive panel lighting power inputs
Standard Panel Lights: 27.5 Vdc
Maximum Current: 0.10 A @ 27.5 Vdc
Optional Panel Lights: 5 Vdc
Maximum Current: 0.10 A @ 5 Vdc
RX Mute Input
While the RX (Receive) Mute Input is active, tthe ACP53 sets the Receiver Volumes and the
Transceiver Volumes, except for the Transceiver selected by the Transmit Select switch, to
their minimum value.
Quantity: one
Logic: active LO, switched ground, no external pull up
Input Active: ≤3 Vdc
Current Draw: ≤100 mA
Input Protection: diode protected to +45 Vdc maximum
Section 1 Rev: 1.02 Issue 1 Page 1-2
ENG-FORM: 800-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
Output Signals
ACP53-001 DACS Audio Control Panel
SM75 Installation and Operation Manual
NORM Mode, BACKUP Mode
The ACP53 provides two outputs for mode control of an external communications
management unit such as the AMU50.
Bidirectional Signals
Communication
The ACP53 communicates with an external communications management system such as
the AMU50 via one bi-directional RS422 serial data port.
1.4.2 Physical Specifications
Height 76.70 mm (3.02 in) maximum
Depth 68.07 mm (2.68 in) maximum behind Dzus rail
Width 146.56 mm (5.77 in) maximum
Weight 0.65 kg (1.42 lbs) maximum
Material and Finish Brushed aluminium, conversion coated
Connectors One 15 pin D-Sub (male), V5 locking hardware
Installation RS-422 Cable: 20.0 m (785.9 in) maximum
Installation Kit: ACP50-IKC
Mounting Four Dzus fasteners, 4.76 cm (1.875 in) vertical spacing
1.4.3 Environmental Specifications
The ACP53-001 has been tested to the environmental conditions listed below. Environmental categories
for which TSO compliance has been demonstrated are listed on the Environmental Qualification Form in
Section 2 of this manual.
Section 1 Rev: 1.02 Issue 1 Page 1-3
ENG-FORM: 800-0115.DOT
Temperature -40 to +70° C (operating)
-45 and +85° C (short-time operating)
-55 to +85° C (ground survival)
Altitude 50,000 feet max
Humidity 95% non-condensing
Shock Operational shock; 6 g for 11 ms
Crash safety (impulse); 20 g for 11 ms
Crash safety (sustained); 20 g for 3 s
Vibration RTCA/DO-160E Section 8 Categories (SBM) (U2FF1)
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
ACP53-001 DACS Audio Control Panel
SM75 Installation and Operation Manual
1.4.4 Product Approval
1.4.4.1 FAA: TSO-C139
When installed as part of the Northern Airborne Technology Ltd DACS:
FAA: TSO-C139 (RTCA/DO-214 Class Ib, RTCA/DO-160E, RTCA/DO-178B Level C)
Refer to SM76 AMU50-001 Audio Management Unit Installation and Operation manual for further
installation compliance details.
1.4.4.2 EASA: ETSO-C50c
When installed as part of the Northern Airborne Technology Ltd DACS:
EASA: ETSO-C50c (RTCA/DO-214 Class Ib, RTCA/DO-160E, RTCA/DO-178B level C)
Refer to SM76 AMU50-001 Audio Management Unit Installation and Operation manual for further
installation compliance details.
Section 1 ends
Section 1 Rev: 1.02 Issue 1 Page 1-4
ENG-FORM: 800-0115.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
ACP53-001 DACS Audio Control Panel
SM75 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 ACP53-001 DACS Audio Control Panel (ACP53).
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
- Operators Manual
- 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 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 Northern Airborne
Technology Ltd or its designated warranty repair center, or any labour to remove or re-install the defective
unit in the aircraft. Contact Northern Airborne Technology Ltd. for any questions regarding this warranty,
its applicability to your units and/or for return authorization. Northern Airborne Technology Ltd. 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
NORTHERN AIRBORNE TECHNOLOGY LTD DEALER. Product for which a warranty card is not
returned shall be warranted from date of manufacture.
2.3 Continued Airworthiness
Maintenance of the ACP53 is ‘on condition’ only. Periodic maintenance of this product is not required.
2.4 Installation Procedures
2.4.1 Warnings
WARNING:
High volume settings can cause hearing damage.
Set the headset volume control to the minimum volume setting prior to
conducting tests, and slowly increase the headset volume to a
comfortable listening level.
Section 2 Rev: 1.01 Issue 1 Page 2-1
ENG-FORM: 805-0117.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIR BORNE TECHNOLOGY LTD.
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