EMS Technologies Canada A781-MK4 Aeronautical Satcom Transceiver User Manual 23 15 87
EMS Technologies Canada, Ltd. Aeronautical Satcom Transceiver 23 15 87
User Guide
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DRAFT as of
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AF
Honeywell International Inc.
400 Maple Grove Road
Ottawa, Ontario, K2V 1B8
Canada
CAGE: 38473
Telephone: 800-601-3099 (Toll Free U.S.A./Canada)
Telephone: 602-365-3099 (International Direct)
Website: www.myaerospace.com
ARINC 781-500 SDU and SCM
System Description, Installation, and Maintenance Manual
D201601000025, Revision 0
This document provides procedures for the equipment listed below.
Part Number
90402750
90404775
Model
ARINC 781-500 Satellite Data Unit
ARINC 781-500 SDU Configuration Module - Single
SBB
This document contains technical data and is subject to U.S. export regulations. These commodities,
technology, or software were exported from the United States in accordance with the export administration
regulations. Diversion contrary to U.S. law is prohibited.
ECCN: 9E991.
23-15-87
Publication Number D201601000025, Revision 0
Š Honeywell International Inc. Do not copy without express permission of Honeywell.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
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ARINC 781-500 SDU and SCM
WARNING: INCORRECTLY REPAIRED COMPONENTS CAN AFFECT AIRWORTHINESS OR
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Copyright 2016 Honeywell International Inc. All rights reserved.
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All other marks are owned by their respective companies.
ARINC 781-500 SDU and SCM SDIM
Document Number: D201601000025, Revision 0
Revision
ECO
NA
AF
Revision Table
Description
First release.
Our products are under continuous research and development. Any information may therefore be
changed without prior notice. Honeywell reserves the right to make improvements or changes in
the product described in this manual at any time without notice. While reasonable efforts have been
made in the preparation of this document to assure its accuracy, Honeywell assumes no liability
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Ottawa, Ontario, K2V 1B8ď
Canada
Reception:
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(International)ď
Email:
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AeroTechSupport@Honeywell.com
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ARINC 781-500 SDU and SCM
TRANSMITTAL INFORMATION
REVISION 0 DATED 17 MAR 2016
THIS IS AN INITIAL RELEASE OF ARINC 781-500 SDU and SCM SDIMM, ATA NO. 23-15-87, ISSUED FOR
USE IN SUPPORT OF THE FOLLOWING:
Table TI-1 shows the applicable components.
Table TI-1. Applicable Components
Nomenclature
90402750
ARINC 781-500 Satellite Data Unit
90404775
ARINC 781-500 SDU Configuration Module - Single SBB
Revision History
AF
Component PN
Table TI-2 shows the revision history of this SDIMM.
Table TI-2. Revision History
Revision
17 Mar 2016
Revision Date
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ARINC 781-500 SDU and SCM
RECORD OF REVISIONS
When revisions are received, insert revised pages, record the date, and initial.
Issue Date
Date Inserted
Inserted by (initial)
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Revision Number
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ARINC 781-500 SDU and SCM
SERVICE BULLETIN LIST
Service Bulletin
Number
Manual Rev.
Number
Manual Rev.
Date
AF
Subject
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
LIST OF EFFECTIVE PAGES
F indicates a right foldout page with a blank back.
Section
Page
Date
T-1 thru T-4
17 Mar 2016
Transmittal Information
TI-1 thru TI-4
17 Mar 2016
Record of Revisions
RR-1 thru RR-2
17 Mar 2016
Service Bulletin List
SBL-1 thru SBL-2
17 Mar 2016
List of Effective Pages
LEP-1 thru LEP-2
17 Mar 2016
Table of Contents
TC-1 thru TC-2
17 Mar 2016
List of Figures
TC-3 thru TC-4
17 Mar 2016
TC-5 thru TC-6
17 Mar 2016
INTRO-1 thru INTRO-6
17 Mar 2016
1-1 thru 1-10
17 Mar 2016
2-1 thru
17 Mar 2016
3-1 thru 3-28
17 Mar 2016
4-1 thru 4-18
17 Mar 2016
5-1 thru 5-4
17 Mar 2016
A-1 thru A-2
17 Mar 2016
List of Tables
Introduction
System Description
System Operation
Installation
Testing and Fault Isolation
Maintenance and Repair
AF
Title Page
Appendix A: Return Material
Authorization
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
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TABLE OF CONTENTS
Title
Page
INTRODUCTION
1. Illustration of Equipment ......................................................................................................INTRO-1
2. Acronyms and Abbreviations ...............................................................................................INTRO-2
3. Safety Advisories .................................................................................................................INTRO-4
SYSTEM DESCRIPTION
Inmarsat System Overview ........................................................................................................... 1-1
Equipment Overview..................................................................................................................... 1-2
Equipment Specifications.............................................................................................................. 1-4
System Interfaces ......................................................................................................................... 1-7
User Interfaces ............................................................................................................................. 1-8
Software Description................................................................................................................... 1-10
SYSTEM OPERATION
1.
2.
3.
4.
Registering and Activating Terminals............................................................................................ 2-1
Using the A781-500 System ......................................................................................................... 2-2
Channel Status and System Configuration ................................................................................. 2-16
Maintenance Mode ..................................................................................................................... 2-22
INSTALLATION
Advisories ..................................................................................................................................... 3-1
Pre-Installation Inspection............................................................................................................. 3-1
Installation Procedure ................................................................................................................... 3-1
Connection Details........................................................................................................................ 3-2
Owners Requirements Table (ORT).............................................................................................. 3-7
Passive Intermodulation (PIM) Test .............................................................................................. 3-7
Installation and Engineering Drawings........................................................................................ 3-11
1.
2.
3.
4.
5.
6.
7.
AF
1.
2.
3.
4.
5.
6.
TESTING AND FAULT ISOLATION
1.
2.
3.
4.
Operational and Diagnostic Testing .............................................................................................. 4-1
Troubleshooting and Fault Isolation.............................................................................................. 4-8
Adjustment/Alignment Procedures ............................................................................................. 4-18
Modification History .................................................................................................................... 4-18
MAINTENANCE AND REPAIR
1.
2.
3.
4.
Maintenance ................................................................................................................................. 5-1
Repair ........................................................................................................................................... 5-1
Instructions for Continued Airworthiness ...................................................................................... 5-1
Visual Inspection and Check......................................................................................................... 5-3
APPENDIX A: RETURN MATERIAL AUTHORIZATION
1. Warranty Returns......................................................................................................................... A-1
2. Non-Warranty Returns ................................................................................................................. A-1
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3. Repackaging Requirements......................................................................................................... A-1
4. RMA Procedure ........................................................................................................................... A-1
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ARINC 781-500 SDU and SCM
LIST OF FIGURES
Figure INTRO-1. Satellite Data Unit ...............................................................................................INTRO-1
Figure INTRO-2. SDU Configuration Module .................................................................................INTRO-2
Simplified Aeronautical Satellite Communications System .......................................... 1-2
Figure 1-2.
A781-500 Avionics System .......................................................................................... 1-3
Figure 1-3.
A781-500 Avionics System Block Diagram.................................................................. 1-7
Figure 2-1.
TCP Screen.................................................................................................................. 2-3
Figure 2-2.
A781-500 TCP Menu Structure.................................................................................... 2-4
Figure 2-3.
SBB Menu .................................................................................................................. 2-16
Figure 2-4.
SATCOM LOG 2 menu .............................................................................................. 2-18
Figure 2-5.
SATCOM CONFIG 1 menu........................................................................................ 2-19
Figure 2-6.
SATCOM CONFIG 2 menu........................................................................................ 2-20
Figure 2-7.
SATCOM CONFIG 3 menu........................................................................................ 2-21
Figure 2-8.
SATCOM CONFIG 4 menu........................................................................................ 2-21
Figure 2-9.
SATCOM CONFIG 5 Menu........................................................................................ 2-22
Figure 2-10.
Maintenance Mode TCP Menu Structure................................................................... 2-23
Figure 2-12.
SATCOM PARMS ...................................................................................................... 2-26
SATCOM OPTIONS................................................................................................... 2-27
CONFIG AUDIO 1/2...................................................................................................2-28
Figure 2-13.
Figure 2-11.
AF
Figure 1-1.
Figure 2-14.
CONFIG AUDIO 2/2...................................................................................................2-29
Figure 3-1.
Top Plug Pin Deviations............................................................................................... 3-4
Figure 3-2.
Mid Plug Pin Deviations ............................................................................................... 3-5
Figure 3-3.
A781-500 SDU Outline and Installation Drawing, PN 90402752 (Sheet 1 of 3) ........ 3-13
Figure 3-4.
A781-500 SDU Outline and Installation Drawing, PN 90402752 (Sheet 2 of 3) ........ 3-15
Figure 3-5.
A781-500 SDU Outline and Installation Drawing, PN 90402752 (Sheet 3 of 3) ........ 3-17
Figure 3-6.
A781-500 SCM Outline and Installation Drawing, PN 90404776 (Sheet 1 of 2) ........ 3-19
Figure 3-7.
A781-500 SCM Outline and Installation Drawing, PN 90404776 (Sheet 2 of 2) ........ 3-21
Figure 3-8.
A781-500 System Interconnect Drawing, PN 90402748 (Sheet 1 of 3)..................... 3-23
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
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A781-500 System Interconnect Drawing, PN 90402748 (Sheet 2 of 3)..................... 3-25
Figure 3-10.
A781-500 System Interconnect Drawing, PN 90402748 (Sheet 3 of 3)..................... 3-27
Figure 4-1.
Maintenance Cable ...................................................................................................... 4-2
Figure 4-2.
SATCOM Subsystem Health Menu.............................................................................. 4-9
Figure 4-3.
SATCOM System Bus Menu...................................................................................... 4-10
Figure 4-4.
SATCOM Overtemp Menu ......................................................................................... 4-12
Figure 4-5.
SATCOM SCM Menu................................................................................................. 4-13
Figure 4-6.
SATCOM Subsystem Bus Menu................................................................................ 4-14
Figure 4-7.
SATCOM RF Path Menu............................................................................................ 4-15
Figure 4-8.
SATCOM USIM/DATA Menu ..................................................................................... 4-16
AF
Figure 3-9.
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LIST OF TABLES
Table
Page
SDU Physical Characteristics and Specifications ........................................................ 1-4
Table 1-2.
SCM Physical Characteristics and Specifications........................................................ 1-5
Table 1-3.
ARINC 781-500 SDU and SCM ERTCA/DO-160E Environmental Characteristics ..... 1-5
Table 1-4.
SDU System Interfaces................................................................................................1-8
Table 1-5.
SDU LED Status .......................................................................................................... 1-9
Table 2-1.
A781-500 System Log Status ...................................................................................... 2-6
Table 2-2.
SBB Menu .................................................................................................................. 2-17
Table 2-3.
SATCOM LOG 2 Menu .............................................................................................. 2-18
Table 2-4.
SATCOM CONFIG 1 Menu........................................................................................ 2-19
Table 2-5.
SATCOM CONFIG 2 Menu........................................................................................ 2-20
Table 2-6.
SATCOM CONFIG 3 Menu........................................................................................ 2-21
Table 2-7.
SATCOM CONFIG 4 Menu........................................................................................ 2-22
Table 2-8.
SATCOM CONFIG 8 Menu........................................................................................ 2-22
Table 2-7.
SATCOM PARMS Menu ............................................................................................ 2-26
Table 2-9.
SATCOM OPTIONS Menu......................................................................................... 2-27
SATCOM CONFIG AUDIO 1 Menu ........................................................................... 2-28
SATCOM CONFIG AUDIO 2 Menu ........................................................................... 2-29
Table 2-10.
Table 2-8.
AF
Table 1-1.
Table 3-1.
SDU Rear Connector Pin Deviations ........................................................................... 3-2
Table 3-2.
SDU Front Connector DSUB and RJ45 Pin Assignment ............................................. 3-6
Table 3-3.
SCM D-Type Connector Pin Assignment..................................................................... 3-6
Table 3-4.
PIM Test Conditions..................................................................................................... 3-9
Table 4-1
List of Required Test Equipment.................................................................................. 4-2
Table 4-2
Maintenance Port Connection Settings........................................................................ 4-3
Table 4-3
Menu 1 Item Descriptions ............................................................................................ 4-4
Table 4-4
Menu 2 Item Descriptions ............................................................................................ 4-4
Table 4-5
Menu 3 Item Descriptions ............................................................................................ 4-5
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Test Setup Procedure .................................................................................................. 4-6
Table 4-7
Power-On Test Procedure ........................................................................................... 4-7
Table 4-8
Power-On Test Procedure ........................................................................................... 4-7
Table 4-9
Post Test Procedure .................................................................................................... 4-8
Table 4-10
SATCOM Subsystem Health Menu.............................................................................. 4-9
Table 4-11
Bus Status Indicators ................................................................................................. 4-11
Table 4-12
SATCOM OVERTEMP Menu..................................................................................... 4-12
Table 4-13
SATCOM SCM Menu................................................................................................. 4-13
Table 4-14
SATCOM SUBSY BUS Menu .................................................................................... 4-14
Table 4-15
SATCOM RF PATH Menu ......................................................................................... 4-15
Table 4-16
SATCOM USIM/DATA Menu ..................................................................................... 4-16
AF
Table 4-6
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
INTRODUCTION
This manual provides the specifications, principles of operation, and information necessary to install the ARINC
781-500 Avionics SATCOM System, including the Satellite Data Unit (SDU) and SDU Configuration Module
(SCM).
This document is divided into the following sections:
â˘
System Description
â˘
System Operation
â˘
Installation
â˘
Testing and Fault Isolation
â˘
Maintenance and Repair
â˘
Appendix A: Return Material Authorization.
AF
NOTE: An Illustrated Parts List is not included with this manual.
Only qualified avionics personnel who are knowledgeable in the technical and safety issues related to the
installation of aircraft communications equipment should perform the installation procedures provided in this
manual.
This manual includes general installation guidelines only; it is not intended to provide specific procedures for
every type of installation.
If necessary, the information in this manual will be revised. Before attempting the installation procedures
presented in this manual, verify that you have a complete and up-to-date release of this document.
Illustration of Equipment
Figure INTRO-1 shows the SDU.
1.
Figure INTRO-1. Satellite Data Unit
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Figure INTRO-2 shows the SCM.
Acronyms and Abbreviations
AES
Aircraft Earth Station
AMSS
AORE
AORW
BIT
Atlantic Ocean Region-East
Atlantic Ocean Region-West
Asia-Pacific
APAC
Aeronautical Mobile Satellite Services
Built-In-Test
BITE
Built-In-Test Equipment
BSU
Beam Steering Unit
CEPT
Comite Europeen des Postes et Telecommunications
CTU
Cabin Telecommunications Unit
DLNA
Diplexer/Low-Noise Amplifier
DITS
Digital Information Transfer System
EASA
European Aviation Safety Agency
EMEA
Europe, Middle East, and Africa
ESD
Electrostatic Discharge
FAA
Federal Aviation Administration
FAR
Federal Aviation Regulation
FMS
Flight Management System
2.
AF
Figure INTRO-2. SDU Configuration Module
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Ground Earth Station
GND
Ground
HGA
High Gain Antenna
HPA
High Power Amplifier
ICA
Instructions for Continued Airworthiness
ICAO
lnternational Civil Aviation Organization
I/O
Input/Output
IOR
Indian Ocean Region
IRS
Inertial Reference System
ISDN
Integrated Services Digital Network
LES
Land Earth Station
LRU
AF
GES
Line Replaceable Unit
MCU
MES
MHz
MOPS
MPU
Mobile Earth Station
Megahertz
Minimum Operational Performance Standards
Maintenance Port Utility
Owner Requirement Table
ORT
Modular Concept Unit
Pacific Ocean Region
POTS
Plain Old Telephone System
RF
Radio Frequency
POR
RMA
Return Material Authorization
RTN
Return
Rx
Receive
SATCOM
Satellite Communications
SBB
SwiftBroadband (Inmarsat)
SCM
SDU Configuration Module
SDU
Satellite Data Unit
SLU
Software Logical Unit
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
3.
STC
Supplemental Type Certificate
TCP
Tuning and Control Panel
Tx
Transmit
USIM
Universal Subscriber Identity Module
UUT
Unit Under Test
VSWR
Voltage Standing Wave Ratio
Safety Advisories
Warnings, cautions, and notes in this manual provide the reader with the following information:
A WARNING describes an operation, procedure, or condition that, if not obeyed, could cause injury or
death.
â˘
A CAUTION describes an operation, procedure, or condition that, if not obeyed, could cause damage
to the equipment.
â˘
A NOTE provides supplementary information or explanatory text that makes it easier to understand and
perform procedures.
AF
â˘
All personnel who install, operate, and maintain the ARINC 781-500 SDU and SCM, and associated test
equipment must know and obey the safety precautions listed below. The procedures provided in this
manual assume that the person performing installation or maintenance tasks is familiar with and obeys
standard aviation shop and safety practices.
The general safety advisories include the following:
WARNING: RADIO FREQUENCY EXPOSURE. OCCUPATIONAL/CONTROLLED EXPOSURE LIMITS
APPLY IN SITUATIONS IN WHICH PERSONS ARE EXPOSED TO RADIO FREQUENCY
ENERGY AS A CONSEQUENCE OF THEIR EMPLOYMENT. THE RADIO SYSTEM
INTEGRATOR SHALL ENSURE OCCUPATIONAL WORKERS ARE FULLY AWARE OF
THE POTENTIAL FOR EXPOSURE AND ARE TRAINED TO EXERCSE CONTROL OVER
THEIR EXPOSURE AS REQUIRED IN THE FOLLOWING REFERENCES: FCC CFR 47,
PART 1.1310, PART 2, 1093; ¡INDUSTRY CANADA RSS-102, HEALTH CANADA SAFETY
CODE 6; EUROPEAN DIRECTIVE 2004/40/EC.
WARNING: BEFORE HANDLING ANY UNIT OR COMPONENT, GROUND THE REPAIR OPERATOR
THROUGH A CONDUCTIVE WRIST STRAP OR OTHER DEVICE THAT USES A 470ď
KILOHM OR 1 MEGAOHM SERIES RESISTOR TO PREVENT INJURY.
CAUTION: TURN OFF POWER BEFORE DISCONNECTING ANY EQUIPMENT FROM WIRING.
DISCONNECTING THE EQUIPMENT WITHOUT TURNING POWER OFF MAY CAUSE
VOLTAGE TRANSIENTS THAT CAN DAMAGE THE EQUIPMENT.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
AF
CAUTION: THIS EQUIPMENT INCLUDES ITEMS THAT ARE ELECTROSTATIC DISCHARGE
SENSITIVE (ESDS) DEVICES. ESDS DEVICES ARE SUBJECT TO DAMAGE BY
EXCESSIVE LEVELS OF VOLTAGE AND/OR CURRENT. THE LOW-ENERGY SOURCE
THAT MOST COMMONLY DESTROYS ESDS DEVICES IS THE HUMAN BODY, WHICH,
IN CONJUNCTION WITH NONCONDUCTIVE GARMENTS AND FLOOR COVERINGS,
GENERATES AND RETAINS STATIC ELECTRICITY. TO ADEQUATELY PROTECT ESDS
DEVICES, THE DEVICE AND EVERYTHING THAT CONTACTS IT MUST BE BROUGHT
TO GROUND POTENTIAL BY PROVIDING A CONDUCTIVE SURFACE AND DISCHARGE
PATHS. USE STANDARD INDUSTRY PRECAUTIONS TO KEEP RISK OF DAMAGE TO A
MINIMUM WHEN TOUCHING, REMOVING, OR SERVICING THE EQUIPMENT.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Blank Page
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
SYSTEM DESCRIPTION
This section includes basic information about the A781-500 system, including the following sections:
â˘
Inmarsat System Overview
â˘
Equipment Overview
â˘
Equipment Specifications
â˘
System Interfaces
â˘
User Interfaces
â˘
Software Description.
Inmarsat System Overview
This section provides an overview of the Inmarsat satellite communications system and networks.
AF
Satellite communication systems provide users with long-range voice and data communication by
accessing global satellite and ground communications networks. Satellite communication systems
include global satellite networks, Land Earth Stations (LES), Ground Earth Stations (GES), Aircraft Earth
Stations (AES), and Mobile Earth Stations (MES).
The LES/GES is the part of the satellite communication system that is on the ground. These numerous,
international stations are responsible for routing voice and data calls from the MES/AES to their
destinations around the world. The MES/AES is the part of the satellite communication system that is on
the aircraft. GES and AES are the terms associated with Aero-H+ services. LES and MES are the terms
associated with other satellite communication services.
Inmarsat is an international organization that operates and maintains multiple geostationary satellites and
satellite networks (I-3 and I-4). For more information about I-3 and I-4 satellite beam coverage, refer to
the Inmarsat websiteâwww.inmarsat.com.
I-3 satellites provide Inmarsat services for aviation (Aero H+ and Swift 64), shipping, and land-mobile
users. The satellites connect to ground telecommunication systems through a network of GESs. Each I-3
satellite is located over an Ocean Region (OR)âthe current OR names are:
1.
⢠Atlantic Ocean Region-East (AOR-E)
⢠Atlantic Ocean Region-West (AOR-W)
⢠Indian Ocean Region (IOR)
⢠Pacific Ocean Region (POR).
I-4 satellites provide worldwide SwiftBroadband (SBB service). Each I-4 satellite has 19 wide spot beams,
228 narrow spot beams, and is capable of accommodating many separate, simultaneous SBB sessions.
The SBB service and I-4 satellites support broadband applications. The current I-4 satellites are:
⢠AMERICAS
⢠EMEA (Europe, Middle East, and Africa)
⢠APAC (Asia-Pacific).
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
The satellite communication avionics (A781-500 system), in conjunction with an antenna subsystem, act
as an AES/MES. The combined system provides users with a data and voice communications link to the
satellite network and global telecommunications system.
Figure 1-1 illustrates a simplified satellite communications system.
2.
AF
Figure 1-1. Simplified Aeronautical Satellite Communications System
Equipment Overview
The A781-500 system, in combination with the antenna sub-system, provides Aeronautical Mobile
Satellite Services (AMSS) by facilitating airborne satellite communications over the Inmarsat network,
including the following services:
⢠Classic Aero-H+âProvides ACARS packet data services at 600, 1,200, or 10,500 bps over the PRT
channel combination and half-rate circuit switched voice service over the C channel. FAX data services are not available over Classic Aero-H+.
⢠SwiftBroadband (SBB)âProvides AMBE+2 voice (circuit-switched) and broadband packet switched
services. The equipment can achieve aggregate rates of 432 kbps, but data rates may vary with network load and signal quality.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
The A781-500 system consists of the Satellite Data Unit (SDU) and the Satellite Data Unit Configuration
Module (SCM).
AF
Figure 1-2 illustrates the A781-500 system.
Figure 1-2. A781-500 Avionics System
a2
SDU
A.
The SDU is the central communications processing and control unit and largely determines the
functionality of the complete SATCOM system. It manages interfaces, routing and priorities, and call
channel establishment and tear down. SDU provides RF power amplification using an internal high
power amplifier.
The SDU is divided into several shop replaceable units that are electrically connected via the
backplane. Various SRUs are also connected using RF cables.
B.
SCM
The SCM is an external peripheral of the SDU and provides a dedicated interface to the SDU. It
stores Secure and User ORTs. The SCM can accommodate up to four Universal Subscriber Identity
Modules (USIM) that store subscriber information for the SBB network.
By storing configuration information independent of the SDU, the SCM facilitates efficient SDU
replacement. A new SDU that replaces a faulty SDU does not require any configuration. All
configuration information is obtained from the SCM.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
The terms Secure ORT and User ORT are consistent with the industry terminology as defined in
the ARINC 781-4 Characteristic. For the Boeing aircraft, the following terms are used:
Options Selection Software (OSS) = Secure ORT
Airline Modifiable Information (AMI) = User ORT.
Equipment Specifications
This section includes the physical and environmental characteristics of the A781-500 SDU and SCM.
Table 1-1 provides a summary of the physical characteristics and equipment specifications of the SDU
component.
Table 1-1. SDU Physical Characteristics and Specifications
CHARACTERISTIC
SPECIFICATION
AF
RELATED DOCUMENTS
ARINC characteristics
ARINC 781-4 Mark 3 Aviation Satellite Communications
System
ARINC 600 Air Transport Avionics Equipment Interfaces
RTCA documents
DO-178B, Software Considerations in Airborne Systems
and Equipment Certification
DO-160E, Environmental Conditions and Test
Procedures for Airborne Equipment
SDU SPECIFICATIONS
Physical size
14.46 inches (36.73 cm)
Length
Width
7.68 inches (19.51 cm)
Height
7.71 inches (19.58 cm)
Weight
24.9 pounds (11.30 kg)
Heating and cooling
3.
Cooling air
ARINC 600
Flow rate
28.16 oz//hr 104°F (50 kg/hr 40°C) (max) air
Pressure drop
0.2 Âą 0.12 inH2O ( 5 Âą 3 mmH2O)
Mounting information
6 MCU tray as per ARINC 600
Electrical interfaces
Power/control interface
as per ARINC 781
Power requirements
Input voltage (AC)
Power consumption
100 VRMS to 122 VRMS AC, 300 to 900 Hz
400 VA
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Table 1-2 provides a summary of the physical characteristics and equipment specifications of the SCM
component.
Table 1-2. SCM Physical Characteristics and Specifications
Characteristic
Specification
Related Documents
ARINC characteristics
ARINC 781 Mark 3 Aviation Satellite Communications
System
RTCA documents
DO-160E, Environmental Conditions and Test
Procedures for Airborne Equipment
SCM Specifications
Physical size
4.7 inches (11.94 cm)
Width
4.0 inches (10.16 cm)
AF
Length
Height
1.0 inch (2.54 cm)
Weight
1.0 pound (0.454 kg)
Mounting information
4 x 0.125" holes on 3.3" x 3.5" spacing, per attachment
1-6 of ARINC 781
Electrical interfaces
Power/control interface
Power requirements
as per ARINC 781
Powered by SDU
Table 1-3 lists the RTCA/DO-160E environmental characteristics of the SDU and SCM.
Table 1-3. ARINC 781-500 SDU and SCM ERTCA/DO-160E Environmental Characteristics
Section
Environmental Condition
Temperature and Altitude
A2
4.5.1
Ground Survival Low
A2
4.5.2
Operating Low Ambient
A2
4.5.3
Short Time Operating High
A2
4.5.4
Operating High Ambient
A2
4.5.5
In Flight Loss of Cooling
A2
Ground Survival Low Temperature
A2
Ground Survival High Temperature
A2
4.6.1
Altitude
A2
Temperature Variation
Humidity
Operational Shock and Crash Safety
8.5.2
Vibration Standard â Random
S, Curve B
4.0
Category
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ARINC 781-500 SDU and SCM
Table 1-3. ARINC 781-500 SDU and SCM ERTCA/DO-160E Environmental Characteristics
Section
Environmental Condition
Explosive Atmosphere
Category
15
Magnetic Effect
16.5.1.4
Power Input (AC) Interruptions
A(WF)H
17
Voltage Spike
18
Audio Frequency Conducted Susceptibility (AC)
19
Induced Signal Susceptibility
CWX
20
Radio Frequency Susceptibility
RR
21
Emission of RF Energy
22
Lightning Induced Transient Susceptibility
ZZZZZ
24
Icing
25
Electrostatic Discharge (ESD)
AF
9.0
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
System Interfaces
This section describes the A781-500 system interfaces.
Figure 1-3 illustrates the block diagram of the A781-500 avionics system.
781A
Ant, IF
DLNA
RF Rx
RF Tx
HPA
SC M
Config
Straps
Read
C ct
Cha nnel Card 1
(Sing le BGAN )
Cha nnel Card 2
(DABC )
C las sic
C han nel 1
IRS #2
IRS #1
P,R &T
SBB
SBB
C hann el C ard
Proce ssor 2 B
AF
Cha nnel Card
Proc esso r 2 A
C hann el C ard
Proces sor 1
AES ID
Eth
Ser.
ISDN
Ser .
ISD N
Eth
ISDN
Se r.
Eth
CFDS
C ontrol
Proc esso r
TMS32 0
WOW
615
D ata
Loader
R4
ISDN TE
ISDN TE
ISDN TE
Voi ce Proce ssor
(VP)
R8
R7
D ata
Proce ssor
(D P)
R2
R5
ISD N TE
ISD N TE
R3
MCDU #3
MCD U #2
MCDU #1
R6
MD
Eth ernet Sw itch 2
(ESW 2)
CMU #2
CMU #1
Eth 4
QU AD
10/1 00
Eth 2
TP
10 BT
Ethernet
Spare
10 BT
R1
C lass ic SBB
FXS
FXS
4-Wire 4 -Wi re CEPT(POTS ) (POTS )
E1
ISD N
ISD N
Ethern et
Swi tch 1
(ESW 1)
Front
Pane l
10BT
Eth 3
QU AD
10 /100
Audio Subsy stem
Eth 1
TP
1 0BT
NIM
Legend
4.
Control Processor Domain
Voice Processor D omain
Data Processor Domain
C hannel C ards
Inactive/D isabled Items
Figure 1-3. A781-500 Avionics System Block Diagram
NOTE: On the aircraft, only the Ethernet3 and 4-wire ports are supported.
A.
SDU
The SDU is divided into the following LRUs:
â˘
Channel cards (2)
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ARINC 781-500 SDU and SCM
â˘
Control and data processor card
â˘
Voice processor card
â˘
High power amplifier
â˘
ARINC backplane
â˘
DIN backplane
â˘
10 MHz oven controlled crystal oscillator
â˘
Power supply.
The major interfaces of the SDU are listed in Table 1-4.
Table 1-4. SDU System Interfaces
ACU/BSU (x1)
TCP (x3)
Antenna control unit/beam steering unit
Tuning and control panel. Interconnected to the SDU
multi-purpose control and display port
ACARS CMU (x2)
Aircraft communication addressing and reporting system
communication management unit
IRS (x2)/GPS (x1)
Inertial reference system/global positioning system
SCM (x1)
SDU configuration module
AES ID (x1)
Servicing
Test Button front panel
RF
Aircraft Earth station identification
DE-9 front panel
Button
Transmit/receive to the DLNA
Antenna subsystem
ARINC 781 antenna subsystem
Miscellaneous
ARINC discrete input, outputs, and configuration straps
B.
Description
AF
System Interface
SCM
The SCM does not provide any interfaces other than a dedicated interface to the SDU.
The SCM is powered by the SDU.
5.
User Interfaces
This section describes the A781-500 SDU interfaces that enable users to access Inmarsat services and
monitor the operation of the A781-500 system.
NOTE: There are no user interfaces associated with the SCM.
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A.
TCP
The TCP is a device that uses an ARINC 429 interface per ARINC 739, which lets you communicate
with individual instruments on an aircraft, including the flight management system, very high
frequency radio, and the SDU.
B.
4-Wire Audio
The SDU supports two 4-wire audio interfaces.
C.
Ethernet
The SDU supports two Ethernet data interfaces.
D.
Maintenance Port
AF
The SDU is equipped with a maintenance port, located on its front panel. The maintenance port
provides the physical connection to a password-protected Maintenance Port Utility (MPU) that
provides a system interface for users or service personnel who need to monitor or troubleshoot the
system.
For more information on configuring the maintenance port, refer to "Connecting to the MPU" on
page 4-2.
E.
LEDs
The front panel of the SDU has two LEDs to indicate unit status:
â˘
One green LED labeled Power
â˘
One red LED labeled Fault.
Table 1-5 provides information about the LED signals.
Table 1-5. SDU LED Status
Power LED Status
Fault LED Status
Description of SDU Status
LED is on
LED is off
LED is on
LED is steadily on as long as LRU fault detected
the fault exists
LED is on
Flashing at 1 Hz with a 50% System fault detected but not isolated
duty cycle while the fault
to the LRU
exists
Alternating flashing of Power and Fault LEDs
F.
No fault detected
Self-test in progress
Self-Test Button
The front panel of the SDU has a recessed button labelled Test.
NOTE: The Test button is recessed behind a red protective cap. To press the button, use a small
and thin tool with no sharp edges. You will not be able to press the button in far enough with
just your finger.
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â˘
To reset the unit, press and hold the Test button for at least 5 seconds.
â˘
To initiate self-test (when no LEDs are flashing), momentarily press the Test button.
â˘
When the self test completes (power on or user initiated) the Power LED will illuminate steady
for a period of 60 seconds and then it will deactivate for the duration of operation.
NOTE: During initial power-up or self-test execution, a momentary press of the self-test
button is ignored.
The LEDs indicate the results of the self-test. Table 1-5 provides information about the meaning of
LED signals.
Software Description
All operating software meets RTCA/DO-178B Level D requirements.
The SCM does not contain any software. Only configuration parameters are stored in the SCM.
AF
The SDU software is not partitioned. The software is modular and modules run on individual Software
Logical Units (SLUs) within the SDU:
Each channel card has a single SLU.
â˘
Control and Data Processor card has a Control SLU and a Data SLU.
â˘
Voice card has a Voice SLU.
â˘
6.
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SYSTEM OPERATION
The SDU is an integral component in an AES. Together with the SCM, DLNA, Antenna, and HGA subsystem, it
provides AMSS by facilitating airborne satellite communication services over the Inmarsat network. These
services comprise Classic Aero-H+ and SwiftBroadband (SBB).
The SCM is a dedicated peripheral of the SDU and stores aircraft specific installation configuration critical to the
operation of the AES.
This section provides basic information on using the A781-500 system.
Registering and Activating Terminals
Registering and activating the A781-500 system has the following steps:
⢠Obtaining System Addresses
⢠Choosing Service Providers
A.
AF
⢠Registering Terminals.
Obtaining System Addresses
ICAO: Obtain your ICAO address from your local aeronautical authority. Your service provider will
require this address when you register for Classic Aero service.
USIM: Obtain SIM card(s) from your service provider. Your service provider will also activate these
cards to enable SBB service. One SIM card is required per channel of SBB service.
B.
Choosing Service Providers
Contact Inmarsat for an up-to-date list of Inmarsat Service Providers using the following contact
information:
Inmarsat
99 City Road, London
EC1Y 1AX
1.
Tel: +44 20 7728 1000
Fax: +44 20 728 1044
Customer Care
Tel: +44 20 7728 1777
Fax: +44 20 7728 1142
Email: customer_care@inmarsat.com
Web address: www.inmarsat.com
C.
Registering Terminals
Contact your Inmarsat service provider and ask for a registration for service activation of Aircraft
Earth Station form. With this form, you can register for SBB, and Aero H+ services. The services
available depend on your service provider.
To complete the registration form you need the following information:
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â˘
Customer information (address and contact information)
â˘
Service provider details (obtained from your ISP)
â˘
System and terminal information (terminal type, manufacturer, model number, serial number of
terminal)
â˘
ICAO 24 bit technical address for Aero H+ services
â˘
Aircraft information (tail number, fuselage/airframe number, manufacturer and model, and
country of registration)
â˘
List of services required (for example, Aero H+ data-2, SBB PS, and SBB CS services)
â˘
IMEI and IMSI for SBB services, printed on splash screen during boot-up while connected to
the maintenance port.
AF
NOTE: IMSI is also printed on the SCM label.
NOTE: IMEIs are printed differently on the front panel maintenance port splash screen from
the SATCOM SWIFT CONFIG page on the TCP. The 14 digit IMEI appears in both
places. However, on the SATCOM SWIFT CONFIG page on the TCP, it has a 15th
digit appended to it. This digit is a check bit to validate the IMEI number.
Using the A781-500 System
This section describes how to perform the following tasks:
⢠Operating the TCP
⢠Logging On and Off
⢠Accepting and Making Calls in the Cockpit
⢠Accepting and Making Calls in the Cockpit
⢠Viewing BITE Information.
2.
A.
Operating the TCP
This section provides information about the TCP and its interfacesâoutput and input ports, the
screen, and the keyboard.screen and the keyboard.
(1)
Screen
The TCP displays all data on the screen, as shown in Figure 2-1.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Figure 2-1. TCP Screen
NOTE: The SAT PHONE 1/2 menu shown in Figure 2-1 is an example where classic (SAT-1) and
SBB (SAT-2) cockpit calls are supported. Depending on the secure ORT parameter
settings, the prompts âSAT-1â and âSAT-2â can be replaced to display any message limited
to five characters.
The top of the screen displays the title of the menu on the screen. The bottom of the screen
(Line 14) is the scratchpad that displays information that you enter on the keyboard.
The TCP has four buttons on each side of the screen that activate TCP functions. Figure 2-1
displays these buttons on the left and right sides of the screen. When the functions
corresponding to a button are available, the function is displayed beside the button.
Other lines on the TCP screen display information relevant to the function or status of the
A781-500 system.
When a button has an action associated, there will be either a < or > symbol beside it.
(2)
Keyboard
The TCPâs keyboard includes a set of numeric keys and a set of alphabetic keys, both of
which you can use to enter data into the TCP.
The keyboard may include preset keys, such as the following:
⢠The IDX or MAIN MENU key: this key returns you to the TCPâs main menu.
⢠The CLR key: this key clears any text you type into the scratchpad.
⢠The NEXT PAGE key: this key brings up the next page of a menu if one is available.
⢠The PREV PAGE key: this key brings up the previous page of a menu if one is available.
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ARINC 781-500 SDU and SCM
(3)
Special Symbols
Because of space constraints on the screen, the TCP uses a number of special symbols to
indicate actions:
⢠< or > appears when there is an action associated with that key.
⢠NUMBER/NUMBER appears to tell you which page out of how many pages you are
viewing. For example, 1/3 would appear when you are on page 1 of 3 pages in total.
(4)
Navigating the TCP
AF
The TCP includes a number of menus, as shown in Figure 2-2.
Figure 2-2. A781-500 TCP Menu Structure
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
B.
Logging On and Off
Using the TCP, you can log on to the satellite network manually or automatically:
â˘
Manual Logonâconstrains the logon to use a satellite that you select
â˘
Automatic Logonâlogs on using the best available satellite as defined by the ORT.
If specified in the ORT, the initial system logon happens immediately after the
A781-500 system powers up, with no TCP input required. If the ORT is not configured as such, you
must initiate the logon from the TCP (MANUAL LOG-ON or AUTO LOG-ON command). For more
information, see "ORT Overview" on page 3-7.
You can watch the progress of the logon on the SATCOM LOG 1/2 menu, or simply wait until the
prompt on the SAT-PHONE 2/2 menu indicates the service is available for use.
(1)
Logging On Automatically
AF
When you initiate an automatic logon, the system selects a satellite and GES based on the
preferences specified in the ORT.
To log on automatically:
(a)
On the SAT-PHONE 2/2 menu, press the button next to LOG.
The SATCOM LOG menu appears.
(b)
On the SATCOM LOG menu, press the button next to AUTO LOG-ON.
If you return to the SAT-PHONE 1/2 menu, then the SAT-L and SAT-R channels are
updated with READY status after the logon completes.
NOTE: The TCP does not display the AUTO LOG-ON and MANUAL LOG-ON functions
when the A781-500 system is already logged on.
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NOTE: On the SAT-PHONE 2/2 menu, SAT-L shows the Classic Aero channel status
and SAT-R shows the SBB channel status. The A781-500 system logs on the
Classic Aero channels first, and then logs on the SBB channels.
(2)
Logging On Manually
To log on manually, you must select a satellite and GES.
To log on manually:
(a) On the SAT-PHONE 2/2 menu, press the button next to LOG.
The SATCOM LOG menu appears.
(b) Press the button next to SATELLITE ID until the TCP screen shows the satellite ID to
which you want the A781-500 system to log on.
AF
(c) Press the button next to GES ID until the TCP screen shows the GES to which you want
the A781-500 system to log on.
(d) On the SATCOM LOG menu, press the button next to MANUAL LOG-ON.
The TCP returns to the SAT-PHONE 2/2 menu and updates the SAT-L and SAT-R
channels with READY status after the log on completes.
NOTE: SAT-L shows the Classic Aero channel status and SAT-R shows the SBB channel
status. The A781-500 system logs on the Classic Aero channels first, and then
searches for SBB services on the satellite determined by the Classic Aero log-on.
(3)
Logging Off Classic Aero Services
WARNING: THIS OPTION DOES NOT LOG OFF SBB OR SWIFT 64 SERVICES. IF EITHER
OF THESE SERVICES IS RUNNING, THEY WILL CONTINUE TO RUN AND
POTENTIAL CHARGES COULD BE MADE TO THE CABIN. TO COMPLETELY
LOG OFF, POWER DOWN THE A781-500 SYSTEM.
To log off:
(a) On the SAT-PHONE 2/2 menu, press the button next to LOG.
The SATCOM LOG menu appears.
(b) On the SATCOM LOG menu, press the button next to LOG-OFF.
The A781-500 system logs off the satellite network.
(4)
Viewing Log Status
The log status defines whether the A781-500 system is logged on or logged off. Valid values
are shown in Table 2-1.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Table 2-1. A781-500 System Log Status
Log Status
Description
Configuration error detected
HSR NOT READY
High stability oscillator is in a warming condition
AES ID NOT READY
Displayed until a non-zero ICAO address is present
NAV DATA UNAVAIL
Insufficient navigation data available
CC NOT READY
Channel card has not fully booted
LOGGED OFF
A781-500 system not logged on to the satellite network.
Awaiting input from the user
TUNING TO SAT
Tuning and scanning for reception from the selected
satellite
DET SYS TABLE
Updating the Satellite table
SPOT BEAM SEARCH
Selecting the optimal spot beam
AF
SAFE MODE
WAIT LOGON CONF
Awaiting the logon confirmation from the satellite
WAIT LOGON ACK
Awaiting for logon acknowledge from the GES
LOGGED ON
Successfully logged on to GES
Logon rejected by the GES, but the condition is temporary
REJECT-PERMANENT
Logon rejected by the GES, and the condition is
permanent
REJECT-INV PARAM
Logon rejected by the GES due to invalid parameters, and
the condition is permanent
REJECT-AES INVAL
ICAO address was not accepted by the GES, the
condition is permanent
REJECT-TEMPORARY
LOGGING OFF
Starting the logoff process
Note: For the 4 reject states, these statuses only stay on the display for 4 seconds.
To view log status:
(a) On the SAT-PHONE 1/2 menu, press the button next to LOG.
The SATCOM LOG menu appears.
(b) The log status appears on the line below STATUS.
C.
Accepting and Making Calls in the Cockpit
You can make air-to-ground and air-to-air calls using the ARINC 781 system, the TCP, and one or
two four-wire headsets. You can manually dial calls or dial previously saved telephone numbers
from the TCPâs telephone directory.You can make air-to-ground and accept ground-to-air voice
calls using the A781-500 system, the TCP, the Audio Control Panel (ACP), and a four-wire cockpit
headset.
The four-wire cockpit headset supports Push to Talk (PTT) mode. Push to Talk mode mimics the
way an HF radio functions. The user's voice is only transmitted when the 'Mic On' input is asserted
i.e. grounded.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
(1)
Making Cockpit Calls
You can manually dial calls or dial previously saved telephone numbers from the TCPâs
telephone directory.
When the SDU cannot complete a call, the TCP displays CALL FAIL.The call and event logs
provide information about the cause of the call failure. Call and event logs are accessible to
avionics technicians through the maintenance port of the SDU.
(a)
Making Calls from the Scratchpad
A call can only be initiated using the buttons on the TCP.
To make a call:
(1) Navigate to the SAT-PHONE 1/2 page.
AF
(2) Enter a number in the TCP scratchpad using the following pattern.
00+CC+NNN+NUMBER (for calls within North America)
011+CC+NNN+NUMBER (for International calls)
where:
⢠00 and 011 are access codes
⢠CC is the country code (Country Code may be up to 4 digits)
⢠NNN is the city or area code.
NOTE:
⢠You can enter up to 18 characters in the scratchpad (including hyphens), but the
maximum number of digits that can be dialed is 17.
⢠Hyphens are not necessary. If you wish to use hyphens, press the +/- key on the
scratchpad.
⢠To delete an incorrect character, press CLR on the scratchpad.
⢠To delete a number, press CLR on the TCP.
The number appears at the bottom of the TCP screen and MANUAL ENTRY
appears under the channel label.
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AF
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
(3) Press the button next to MANUAL ENTRY.
NOTE: If an entry has MANUAL ENTRY under the SAT-1 label, that entry can be dialed
on Classic Aero channels. If an entry has MANUAL ENTRY under the SAT-2,
that entry can be dialed on SBB channels.
MAKE CALL and the number appear under the channel label.
10
S A
1L
< M A K E
2L
15
20
E A D Y
P R
< M A N U A L
T Y
1R
D I R E C T O R Y > 5
2R
S B B
O R
E M G >
S A
4L
C A L L
P R
3L
24
S A T â P H O N E
O R
T Y
P U B
3R
4R
E A D Y
E N T R Y
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
(4) To set the priority, press the button next to PRIORITY.
Available priorities are as follows, all in order from highest to lowest.
⢠1 EMERGENCY (EMG)âhighest
⢠2 OP-HIGH (HGH)
⢠3 OP-LOW (LOW)
⢠4 PUBLIC (PUB)âlowest.
NOTE: You can only set the priority for a Classic call. All calls made over SBB are
considered equal to public priority.
(5) On the TCP, press the button next to MAKE CALL.
(b)
AF
The channel status displays DIALING, RINGING, and then ANSWERED when
connected.
Making Calls from the Telephone Directory
You can make voice calls from the numbers you have saved in the TCPâs telephone
directory. Numbers can be saved in the telephone directory using the TCP or the ORT.
For more information on the ORT, see "ORT Overview" on page 3-7.
To make a call from the telephone directory:
(1) On the TCP main menu, press the button next to SAT.
(2) On the TCP keyboard, press the NEXT PAGE key to advance to the second page
of the SAT-PHONE menu, and then press the button next to DIRECTORY.
The SAT DIRECTORY INDEX menu appears.
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ARINC 781-500 SDU and SCM
(3) To access phone numbers in a directory, press the key next to a directory name.
The SAT DIRECTORY page appears.
NOTE: If an entry has the < symbol in the SAT-L column, that entry can be dialed
on Classic Aero channels. If an entry has the > symbol in the SAT-R
column, that entry can be dialed on SBB channels. If there is no symbol,
the entry cannot be dialed on that channel.
S A T
S A
1L
3 <
- F L I G H T
7 <
24
D I S P A T C H 9
1R
- > 5
2R
3R
4R
S A
â
W A T C H -
â
- E N G I N E E R I N G 0
4L
- M A I N T
3L
20
AF
5 <
15
D I R E C T O R Y
2L
10
5 â
< R E T U R N
(4) Press the button to the left or right of the number you wish to dial.
⢠Pressing the left button loads the number on the Classic Aero channel.
⢠Pressing the right button loads the number on the SBB channel.
The TCP returns to page one of the SAT-PHONE menu and the number is
displayed under the selected channel.
(5) To set the priority, press the button next to PRIORITY.
NOTE: You can only set the priority for a Classic call. All calls made over SBB are
considered equal to public priority.
(6)
Press the button next to MAKE CALL.
The channel status displays DIALING, RINGING, and then ANSWERED when
connected.
(c)
Answering Calls
To answer a call:
⢠On the ACP, transition the MIC ON discrete from ON HOOK to OFF HOOK.
OR
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On the TCP, press the button next to ANSWER to answer the call or press the button
next to REJECT to reject the call.
(d)
Ending Calls
To end a call:
⢠On the TCP on the menu, press the button next to END CALL.
OR
On the ACP, assert the Place/End switch.
(2)
Call Priority
The A781-500 system has four priority settings for calls:
⢠1 EMERGENCY (EMG)âhighest
AF
⢠2 OP-HIGH (HGH)
⢠3 OP-LOW (LOW)
⢠4 PUBLIC (PUB)âlowest.
(a)
Setting the Call Priority
You can set the priority for an air-to-ground four-wire Classic call before making the call.
This priority setting allows for preemption of existing lower priority Aero H+ calls if
insufficient satellite resources exist to establish an independent call, and for preemption
of calls and services within the cabin.
If the four-wire Classic call is the same priority as an existing call, the established call
will be retained and the new call will be queued.
Cockpit calls over SBB are Public priority calls. You can not change the priority.
All calls made from the interfaces other than the cockpit four-wire phones or ACARS
CMU are Public priority calls.
(b)
Receiving a Priority Call
If a cockpit call is in progress and a higher priority ground-to-air call is received, the
higher priority incoming call will preempt the existing call. The preemption is automatic,
and the caller in the cockpit has no option to choose between calls.
(3)
Saving Telephone Numbers in the Telephone Directory
You can save telephone numbers to the TCPâs telephone directory to use later, and you can
dial telephone numbers from the telephone directory.
NOTE: Saving telephone numbers in the directory may be inhibited by ORT options.
To save telephone numbers to the telephone directory:
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ARINC 781-500 SDU and SCM
(1) Navigate to the SAT-PHONE 2/2 menu and press the button next to DIR DETAILS.
10
15
20
24
S A T â P H O N E
< L O G
2L
< D I R
3L
4L
1R
C O N F I G > 5
2R
S B B > 7
3R
4R
B I T E
D E T A I L S
F A I L >
AF
1L
The SAT DIR DETAILS menu appears and shows directory page 1. There are 20
phone directories with five phone number entries available in each directory.
Use NEXT PAGE and PREV PAGE to navigate to the directory in which you want
to add or modify a phone number entry.
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(2) To modify an entry, press the button next to the entry. To add a new entry, press the
button next to an empty line.
(3) Type the name associated with the telephone number in the scratchpad and then
press the button next to the name field on the TCP screen.
⢠The maximum number of characters for a name is 14.
(4) Enter a number in the TCP scratchpad using the following pattern.
00+CC+NNN+NUMBER (for calls within North America)
011+CC+NNN+NUMBER (for International calls)
where:
⢠00 and 011 are access codes
AF
⢠CC is the country code (Country Code may be up to 4 digits)
⢠NNN is the city or area code
NOTE:
⢠You can enter up to 18 characters in the scratchpad (including hyphens), but the
maximum number of digits that can be dialed is 17.
⢠Hyphens are not necessary. If you wish to use hyphens, press the +/- key on the
scratchpad.
(5) Press the button next to the phone number field on the TCP screen.
(6) Press the button next to PRIORITY to select a priority for the phone number.
(7) To save the entry, press the button next to STORE. To cancel the new entry, press
the button next to CANCEL.
(8) Press the button next to CONFIRM.
The entry is saved.
NOTE: You can protect directory entries using the Phonebook ORT parameter. If
an entry is protected, it cannot be modified or deleted. For more
information about the Phonebook ORT parameter, refer to "ORT
Overview" on page 3-7.
D.
Viewing BITE Information
From the SATCOM BITE menu, you can view BITE information to determine subsystem health.
To view BITE information:
(a) On the TCP main menu, press the button next to SAT.
(b) On the TCP keyboard, press the NEXT PAGE key to advance to the second page of the
SAT-PHONE menu, and then press the button next to SATCOM BITE.
The SATCOM BITE menu appears.
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1L
S A T C O M
15
20
B I T E
S T A T U S
R F
24
4L
1R
O K
U S I M / D A T A > 5
2R
P A T H > 3
3L
10
< S C M
O K
2L
AF
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
< R E T U R N
3R
4R
You can view the following information from this screen:
⢠SDU status on the line below SDU
⢠Overall health of all subsystem components (SCM, DLNA, and HGA) on the line below
SUBSY HLTH
⢠Thermal status of the SDU and HGA on the line below OVERTEMP
⢠SCM health on the line below SCM
⢠Peripheral LRU bus status on the line below SYS BUS
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ARINC 781-500 SDU and SCM
⢠Subsystem bus status on the line below SUBSY BUS
⢠The number of functional channels followed by the number of installed channels on the
line below CHANNELS
⢠The number of functioning SBB channels and Classic channels below CH-SBB CLSC
⢠RF path status on the line below RF PATH
⢠USIM and data bus status on the line below USIM/DATA.
NOTE: Valid values for status are OK and FAIL. If the status of a subsystem is FAIL, press
the button next to the subsystem to view the details.
To view more information about the health of a particular subsystem, press the button next to the
name of the subsystem. For more information about the various TCP menu screens, see
"Troubleshooting and Fault Isolation" on page 4-8.
A.
SBB Status
AF
Channel Status and System Configuration
As shown in Figure 2-3, the SBB menu provides information about the status of the SBB service.
3.
Figure 2-3. SBB Menu
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Table 2-2 describes the information available in the SBB menu.
Table 2-2. SBB Menu
Label
Description
Status
The status of the SBB channel. Possible values are:
⢠HSR NOT READYâhigh stability oscillator is warming
⢠USIM WARMINGâUSIM is warming
⢠NOT READYâchannel card has not yet started
registration, and may be waiting on the Classic card
⢠ATTACHINGâsatellite identified and attach has begun
⢠CS ATTACHâattach complete, circuit-switch granted
⢠PS ATTACHâattach complete, packet-switch granted
⢠CSPS ATTACHâattach complete, circuit-switch and
packet-switch granted
AF
⢠ATTACH-FAILâ attach failed, with the 3GPP cause code
⢠NOT READYâselected satellite does not support SBB
⢠DISABLEDâselected SBB service is not configured in the
operational mode
Satellite
The selected ocean region.
Activity
The activity status of the SBB service. Possible values are:
⢠CS CONNECTâCircuit Switched services in use
⢠PS CONNECTâPacket Switched services in use
⢠CSPS CONNECTâCircuit Switched services and Packet
Switched services in use
⢠NONE âNo services in use
The current signal quality.
EIRP
The EIRP setting of the channel.
Beam ID
The current beam ID for the service.
Signal
Elevation
The computed elevation angle for the antenna pointing
vector.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
B.
Channel Information and Bit Errors
As shown in Figure 2-4, the SATCOM LOG 2 menu provides information about the current channel
and the bit error rate.
10
S A T C O M
C H A N N
1L
E L
15
L O G
E R
- 1 9 9 9 H Z
1R
2R
3R
4R
E R R O R S
2L
3L
0 1 2 3 4 5 6 7
4L
C A O
AF
24
D O P P L
1 4 0 0 8
20
< R E T U R N
Figure 2-4. SATCOM LOG 2 menu
Table 2-3 describes the information available in the SATCOM LOG 2 menu.
Table 2-3. SATCOM LOG 2 Menu
Label
Channel #
C.
Description
Channel number representation of the P channel, displayed
only when the SDU is logged on, otherwise the display is
blank.
Bit Errors
The raw bit error rate.
ICAO
The current ICAO address.
Doppler
The doppler correction.
System Part Numbers
As shown in Figure 2-5, the SATCOM CONFIG 1 menu provides the hardware part numbers of the
SDU and the SCM.
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ARINC 781-500 SDU and SCM
10
S A T C O M
H A R D W A R
1L
3L
P A R
N U M B
E R
1R
E R
N U M B
2R
3R
X X X X > 9
4R
E R
1 4 7 2 0 6 X X X X X
E V
E L
< R E T U R N
C O D
AF
24
C O N F I G
P R O T
4L
20
8 2 2 - 2 5 5 6 - X X X X X X
2L
15
Figure 2-5. SATCOM CONFIG 1 Menu
Table 2-4 describes the information available in the SATCOM CONFIG 1 menu.
Table 2-4. SATCOM CONFIG 1 Menu
Label
Description
Part number of the A781-500 SDU.
Serial Number
Serial number of the A781-500 SDU.
Hardware Part Number
This code is displayed if the SATCOM CONFIG menu is
accessed from the In-Flight menus. It allows access to the
Maintenance Mode TCP menus. Contact RC Product
Support for the PROT level code.
PROT Level Code
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
As shown in Figure 2-6, the SATCOM CONFIG 2 menu provides the software part numbers of the
equipment in the A781-500 system.
S A T C O M
S O F
1L
T W A R
15
20
24
C O N F I G
L O C A
O N
L S X X X X X X X
S W
2L
10
L O C
S A T C O M
3L
C O L C C - S S S S -
4L
S W
P A R
E S C R
N U M B E R
P T
1R
2R
3R
4R
O N
O P S
S S S S
AF
< R E T U R N
Figure 2-6. SATCOM CONFIG 2 Menu
Table 2-5 describes the information available in the SATCOM CONFIG 2 menu.
Table 2-5. SATCOM CONFIG 2 Menu
Label
Description
TBD
SW Part Number SDU
OPS
Software part number of the operational software in the
A781-500 SDU.
Software Location ID
As shown in Figure 2-7, the SATCOM CONFIG 3 menu provides the software numbers of the
Secure ORT and the User ORT.
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S AT C O M
S W
1L
P A R T
S W
3L
4L
24
C O N F I G
N U M B
P A R T
20
E R
O S S
S S S S
N U M B
C O L C C - S S S S -
E R
A M
1R
2R
3R
4R
S S S S
< R E T U R N
AF
15
C O L C C - S S S S -
2L
10
Figure 2-7. SATCOM CONFIG 3 Menu
Table 2-6 describes the information available in the SATCOM CONFIG 3 menu.
Table 2-6. SATCOM CONFIG 3 Menu
Label
Description
SW Part Number OSS
Software part number of the Secure ORT (OSS)
SW Part Number AMI
Software part number of the User ORT (AMI)
As shown in Figure 2-8, the SATCOM CONFIG 4 menu provides the hardware part number and
serial number of the antenna in the A781-500 system.
S A T C O M
S A
1L
10
E L
H A R D W A R
15
20
C O N F I G
24
H G A
P A R T
U M B
E R
1R
2R
3R
4R
x x x x x x x x x x x x x x x x
2L
E R
N U M B E R
x x x x x x x x x x x x x
3L
4L
x x x
< R E T U R N
Figure 2-8. SATCOM CONFIG 4 Menu
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Table 2-7 describes the information available in the SATCOM CONFIG 4 menu.
Table 2-7. SATCOM CONFIG 4 Menu
Label
Description
Hardware Part Number
Hardware part number of the HGA
Serial Number
Serial number of the HGA
As shown in Figure 2-9, the SATCOM CONFIG 5 menu provides the hardware part number and
serial number of the SCM.
3L
4L
H A R D W A R
E R
C O N F I G
24
R E C E
M O D U
P A R T
V E D
U M B
R O M
E R
V E D
R O M
1R
2R
3R
4R
S C M
N U M B E R
R E C E
S C M
< R E T U R N
2L
C O N
20
AF
S D U
15
S A T C O M
1L
10
Figure 2-9. SATCOM CONFIG 5 Menu
Table 2-8 describes the information available in the SATCOM CONFIG 5 menu.
Table 2-8. SATCOM CONFIG 5 Menu
Label
Description
Hardware Part Number
Hardware part number of the SCM
Serial Number
Serial number of the SCM
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Maintenance Mode
The maintenance menus of the TCP provide the same configuration and BITE information available in
In-Flight mode, and provide access to the PIM test, audio configuration, and other options and
parameters.
AF
Maintenance mode includes a number of TCP menus, as shown in Figure 2-10.
4.
Figure 2-10. Maintenance Mode TCP Menu Structure
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
A.
Accessing Maintenance Mode
You can only access the TCP maintenance menus when the plane is on the ground and classic
services are logged off.
To access the maintenance menus:
1. In the SATCOM CONFIG 1/4 menu, type the protection level code in the scratchpad, and press
the button next PROT LEVEL CODE.
NOTE: Contact RC Product Support for the PROT level code.
The TCP displays the MAINTENANCE ENTRY page.
1L
10
MA I N T E N A N C E
T H
W I
S A T C O M
2L
5 U P O N
E X I
N O T E :
3L
20
T I
E N T R Y
1R
2R
3R
C O N F I R M>
4R
R E Q U
I R E
C O L D S T A R T
N G
O T H E R
M A I
A C T
C E N T E R
G H
24
< C A N C E L
T C
N T
P A G E S
V E
T C P S
T C P
L L
T O
R I
4L
15
AF
To enter Maintenance Mode, press the button next to CONFIRM.
The SATCOM MAINT MENU appears.
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ARINC 781-500 SDU and SCM
2L
3L
4L
S A T C O M
10
15
MA I N T
< I N T E R MO D
T E S T
A MI
20
M E NU
24
O P T I O N S >
1R
P A R M S >
2R
R E S T O R E >
3R
R E S U M E >
4R
AF
B.
1L
Viewing BITE Information
The BITE information available in maintenance mode is the same as the BITE information available
in In-Flight mode. For information about the BITE menus, see "Viewing BITE Information" on page
2-14.
C.
Starting the Intermod Test
For information and instructions about running the PIM test, see "PIM Test" on page 3-8.
Viewing Configuration
D.
The configuration menus available in maintenance mode are the same as the configuration menus
in In-Flight mode. For information about these menus, see "System Part Numbers" on page 2-18.
Viewing SATCOM Parameters
E.
As shown in Figure 2-11, the SATCOM PARMS menu provides information about logon, fallback,
and the channel cards.
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ARINC 781-500 SDU and SCM
10
S A T C OM
L O G O N
1L
2L
A N T
2 . 0
/ M M /
1R
2R
3R
4R
1R
2R
3R
4R
I M E
10
15
S A T C OM
Y Y
< R E T U R N
S D U /
1 3 5 4
1L
M O D E
AF
4L
P A RMS
24
2 3 / 0 7 / 1 4
20
A U T O
D D
3L
15
C H A N
P A RMS
20
24
C A R D
S B B *
2L
C L S C
C A R D
V O I C E / D A T A *
3L
C H A N
4L
< R E T U R N
Figure 2-11. SATCOM PARMS
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Table 2-9 describes the information available in the SATCOM PARMS menu.
Table 2-9. SATCOM PARMS Menu
Label
Description
LOGON MODE AUTO or MANUAL
DD/MM/YY
Current date
TIME
Current time
SDU/ANT
Estimated loss between the SDU and antenna
CHAN CARD1 SBB
CHAN CARD2 CLSCVOICE/DATA
F.
Viewing SATCOM Options
C H
2L
10
S A T C OM
1L
AF
As shown in Figure 2-12, the SATCOM OPTIONS menu provides information about audio and
phone operation.
I M E
A 2 G
15
20
OP T I ON S
C A L L E D
N A M E >
3L
C O N F I G
< R E T U R N
A U D I O
1R
2R
3R
4R
D I A L
A LW A Y S >
4L
M A N U A L
P A R T Y
A LW A Y S
24
Figure 2-12. SATCOM OPTIONS
Table 2-10 describes the information available in the SATCOM OPTIONS menu.
Table 2-10. SATCOM OPTIONS Menu
Label
Description
CHIME-A2G
Value of the CHIME A2G ORT parameter.
CALLED PARTY
Display mode selection for call placement.
MANUAL DIAL
Current state of the scratchpad number entry control.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
G.
Configuring Audio Options
As shown in Figure 2-13 and Figure 2-14, the SATCOM CONFIG AUDIO menu provides
information and settings for cockpit phone operation.
10
S AT C O M
15
C O N F I G
20
A U D I O
A U D I
1L
2L
4L
L I
S P E A K E R
1 0 0
M I C R O P H O N E
5 0
S I
D E T O N E
5 0
N O I S E
5 0
N E
4 - W I R E
AF
3L
24
< R E T U R N
1R
2R
3R
4R
Figure 2-13. CONFIG AUDIO 1/2
Table 2-11 describes the information available in the SATCOM CONFIG AUDIO 1 menu.
Table 2-11. SATCOM CONFIG AUDIO 1 Menu
Description
Label
Switch between four-wire 1 and four-wire 2.
SPEAKER
Headset speaker levelâ0 to 100.
MICROPHONE
Microphone levelâ0 to 100.
SIDETONE
Sidetone levelâ0 to 100.
NOISE
Headset speaker noise levelâ0 to 100.
AUDIO LINE
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
10
S AT C O M
15
C O N F I G
20
A U D I O
A U D I
1L
I C
C A L L S
I O R
N E
1R
2R
3R
4R
T Y
I D
< R E T U R N
AF
4L
L I
A L L
T E R M I N A L
P R
E N A B L E D
3L
4 - W I R E
P U B L
2L
24
Figure 2-14. CONFIG AUDIO 2/2
Table 2-12 describes the information available in the SATCOM CONFIG AUDIO 2 menu.
Table 2-12. SATCOM CONFIG AUDIO 2 Menu
Label
Description
Switch between four-wire 1 and four-wire 2.
PUBLIC CALLS
Displays the value of the Ground Initiated Public Call Routing ORT parameter.
This parameter enables the placing and acceptance of public calls via the
analog audio lines.
TERMINAL ID
The terminal ID for the selected audio line interface.
PRIORITY
The priority of calls allowed via the selected audio interface. The possible values
are:
AUDIO LINE
⢠COCKPIT
⢠PUBLIC
⢠ALL
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Blank Page
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
INSTALLATION
This section describes the procedures required to install the A781-500 system (SDU and SCM) on an aircraft,
including the following sections:
â˘
Advisories
â˘
Pre-Installation Inspection
â˘
Installation Procedure
â˘
Connection Details
â˘
Owners Requirements Table (ORT)
â˘
Passive Intermodulation (PIM) Test
â˘
Installation and Engineering Drawings
1.
Advisories
2.
AF
Before performing any installation procedures, read the safety advisories listed in the Introduction on page
INTROâ4 of this manual.
Pre-Installation Inspection
Before installing any A781-500 system, conduct a pre-installation inspection of all parts to make sure that
no damage occurred during shipping.
Unpacking and Inspecting Equipment
â˘
Unpack the A781-500 equipment from the shipping containers.
â˘
Verify that the part number displayed on the shipping box and equipment component matches
the model and part number ordered. If components are missing from the shipment, contact the
supplier immediately and report the problem.
Visually inspect the A781-500 equipment for any shipping damage. If any shipping damage has
occurred, contact the shipping carrier immediately and report the problem.
â˘
A.
â˘
B.
Check the A781-500 equipment connectors for corrosion and damage. If damage is noted, do
not apply power to the equipment. Contact the supplier immediately to report the problem.
Cabling Notes
Before proceeding with the installation of the A781-500 system, read all cabling notes provided on
the Interconnection and Contact Assignment drawings.
3.
Installation Procedure
Only authorized technical personnel, trained in general aviation workmanship, that have a basic
understanding of SATCOM systems should proceed with the following procedure.
Before performing any installation procedures, read the safety advisories listed in "Safety Advisories" on
page INTRO-4 of this manual.
CAUTION:
THE A781-500 SYSTEM REQUIRES CONDITIONED AIR PER ARINC781.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
1. Install the SDU in a 6 MCU tray as per ARINC 600. The minimum clearance between the SDU and
any other equipment installed above it shall be no less than 0.5 inches (12.7 mm).
2. Install the SCM in any orientation. Refer to Table 1-2 on page 5 for the SCM mounting specification.
â˘
There are no clearance requirements for the SCM.
3. Connect the SCM to the SDU. The SDU supports one RS-422 interface for interconnect to the SCM.
4. Connect the SDU to the antenna subsystem. The SDU supports ARINC 429 communication to and
from the antenna subsystem.
5. Connect the SDU to the TCP(s). The SDU supports three ARINC 429 receive interfaces and one
ARINC 429 transmit interface for interconnect to the flight deck TCP(s).
Connection Details
A.
SDU
AF
The SDU uses two external interface connectors:
Rear Connectorâa low insertion force, size 2 shell receptacle accommodating coaxial and signal interconnections in the top plug insert, Quadrax and signal connections in the middle plug
insert, and coaxial and power interconnections in the bottom plug insert. Pin assignments are
compliant with ARINC Characteristic 781 with top plug and middle plug deviations as shown in
Table 3-1.
â˘
Front Connectorâan RJ45 and 9S DSUB connector providing 10BaseT Ethernet interfaces
and an RS-232 maintenance interface. Pin assignments are shown in Table 3-2. The front
connector is behind a maintenance cover. This connector provides access to maintenance and
troubleshooting information when the SDU is not in normal operation.
â˘
Table 3-1. SDU Rear Connector Pin Deviations
Pin Number
TP01C
A781
Deviation
ATE pin 3
Data I/O Processor Maintenance GND
ATE pin 4
Data I/O Processor Maintenance TXD
TP01E
ATE pin 5
Data I/O Processor Maintenance RXD
TP01F
ATE pin 6
CC1 Processors #1 & #2 Maintenance GND
TP01G
ATE pin 7
CC1 Processor #1 Maintenance TXD
TP01H
ATE pin 8
CC1 Processor #1 Maintenance RXD
TP01J
ATE pin 9
CC1 Processor #2 Maintenance TXD
TP01K
ATE pin 10
CC1 Processor #2 Maintenance RXD
TP02A
ATE pin 11
Shopload
TP02C
ATE pin 13
Voice Processor Maintenance GND
TP02D
ATE pin 14
Voice Processor Maintenance TXD
TP02E
ATE pin 15
Voice Processor Maintenance RXD
TP02F
ATE pin 16
CC2 Processor Maintenance GND
TP01D
4.
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ARINC 781-500 SDU and SCM
Table 3-1. SDU Rear Connector Pin Deviations
Pin Number
A781
Deviation
Top Plug Insert Pin Deviations
ATE pin 17
CC2 Processor 2A Maintenance TXD
TP02H
ATE pin 18
CC2 Processor 2A Maintenance RXD
TP02J
ATE pin 19
CC2 Processor 2B Maintenance TXD
TP02K
ATE pin 20
CC2 Processor 2B Maintenance RXD
TP03A
Ethernet
Ethernet speed, 10Base-T
TP03B
Ethernet
Ethernet speed, 10Base-T
TP03C
Empty Cavity
SPARE
TP04A
Ethernet
Ethernet speed, 10Base-T
TP04B
Ethernet
Ethernet speed, 10Base-T
TP04C
Empty Cavity
SPARE
TP05A
Empty Cavity
SPARE
TP05B
Empty Cavity
SPARE
TP05C
Empty Cavity
SPARE
TP06A
Ethernet
Ethernet speed, 10Base-T
TP06B
Ethernet
Ethernet speed, 10Base-T
TP06C
Empty Cavity
SPARE
TP07A
Ethernet
Ethernet speed, 10Base-T
TP07B
Ethernet
Ethernet speed, 10Base-T
Empty Cavity
SPARE
TP07C
AF
TP02G
Middle Plug Insert Pin Deviations
Spare Discrete
Reserved for future use.
Spare Discrete
Flight Deck Data Load
MP05F
MP07C
Figure 3-1 shows the top plug pin deviations outlined in gray.
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AF
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Figure 3-1. Top Plug Pin Deviations
Figure 3-2 shows the mid plug pin deviations outlined in gray.
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AF
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Figure 3-2. Mid Plug Pin Deviations
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Table 3-2. SDU Front Connector DSUB and RJ45 Pin Assignment
Description
RJ45 Pin Number
Description
NC
RX+
TX
RX-
RX
TX+
NC
NC
GND
NC
NC
TX-
NC
NC
NC
NC
NC
SCM
AF
B.
9S DSUB Pin Number
The SCM uses a 15-pin D-type male connector and locking screws. Pin assignments are compliant
with ARINC Characteristic 781 and shown in Table 3-3.
Table 3-3. SCM D-Type Connector Pin Assignment
Pin Number
Data to SDU A (RS422)
Data to SDU B (RS422)
Data from SDU A (RS422)
Description
Data from SDU B (RS422)
Reserved - RS232 Gnd (used for shop loading)
Spare
Chassis Ground
Power Input +8 V to +15 V
Reserved - Enable RS232 (used for shop loading)
10
Reserved - 0 V strap output (used for shop loading)
11
Spare
12
Reserved - RS232 Tx (used for shop loading)
13
Reserved - RS232 Rx (used for shop loading)
14
Spare
15
Power Return 0 V
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
5.
Owners Requirements Table (ORT)
A.
ORT Overview
The A781-500 system includes a secure and user ORT. Secure ORT files must be certified for the
aircraft type on which the equipment is installed. Items in user ORT files can be modified by
individual customers and may be customized to an individual aircraft.
You can change secure ORT parameters only by uploading an ORT file. To obtain a secure ORT
file, contact RC Product Support.
The ORT file is loaded on to the SCM using an ARINC 615A data loader. You can only load ORT
data when the aircraft is on the ground and the data load discrete is asserted. When the SDU boots,
it compares the ORT file in its memory to that in the SCM. If the ORT files do not match, the SDU
loads the file from the SCM into its memory.
AF
Some user ORT parameters can be modified in the SDU ORT. You can reset the SDU ORT to the
default values stored in the SCM in the maintenance menus.
To modify the user ORT parameters, use the ORT Application. To obtain the ORT Application,
contact RC Product Support.
For more information see the following guides:
Publication No. D201511000062, A781-500 User ORT User Guide
â˘
Publication No. D201511000064, A781-500 Secure ORT User Guide
â˘
Publication No. D201511000061, A781-500 ORT Application Install Manual.
Passive Intermodulation (PIM) Test
A.
This section describes the passive intermodulation test. You must execute the PIM test after installation
if the A781-500 SDU operates in SBB mode.
Overview
To meet Inmarsat requirements for SBB operation, the A781-500 SDU can test for passive
intermodulation effects. The PIM test verifies that the transmit signal from the A781-500 SDU does
not degrade or interfere with the receive signals as a result of PIM.
6.
â˘
A781-500 SDU can only perform the PIM test when the aircraft is on the ground.
When the A781-500 SDU logs on to the SBB network, the network assigns the terminal two
channels for PIM testing. These channels are not used by other terminals so that the A781-500
SDU can transmit the test frequencies without interfering with other satellite communication
equipment or the Inmarsat satellite.
B.
PIM Requirements
In order to successfully perform the PIM test, the aircraft and the satellite communication system
must meet the following requirements:
â˘
The A781-500 SDU must have successfully logged on to a satellite that is visible at the test
location within the last 168 hours (7 days).
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
C.
â˘
The aircraft has to be outside the hangar and far away from the hangars and towers in order to
obtain good results.
â˘
The aircraft must be facing due north in the northern hemisphere, and due south in the southern hemisphere.
PIM Test
To run the PIM test, you must be in maintenance mode.You can only access the TCP maintenance
menus when the plane is on the ground and classic services are logged off.
To start the PIM test:
(a) In the TCP CONFIG 1/5 menu, type the protection level code in the scratchpad, and
press the button next to PROT LEVEL CODE.
NOTE: Contact RC Product Support for the PROT level code.
AF
The SATCOM Maintenance Entry page appears.
(b) To enter maintenance mode, press the button next to CONFIRM.
The MAINTENANCE MENU appears.
(c) To start the PIM test, press the button next to INTERMOD TEST.
(d) Press the button next to RUN in order to initiate the PIM test.
The PIM test starts. The test takes about 5 minutes.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
D.
PIM Test Results
Table 3-4 displays possible PIMBIT status messages. The status messages are displayed on the
INTERMOD page.
Table 3-4. PIM Test Conditions
Test Status
Description
Action
READY
Conditions necessary to perform test No action required.
are present, no test is in progress and
no test has been run to completion.
IN PROGRESS
Test is in progress.
PASS
Test has completed successfully and No action required.
passed the ORT specified criteria.
FAIL
Test has completed but does not
meet pass with the ORT specified
criteria.
See "PIM Test Overall Status" on
page 3-10.
Test results are suspect (possible
causes are: unstable noise,
mismatched test frequencies).
Repeat the test.
High stability oscillator is warming.
Wait for the status to change to
READY.
HSR NOT READY
Test cannot be executed as
SDU is in safe mode. Navigation
navigation information is not present. data must be provided in order for
the SATCOM system to work,
including PIMBIT. Ensure the SDU
can receive navigation data. Wait for
the status to change to READY and
repeat the test.
NAV DATA UNAVAIL
AF
SUSPECT
Test cannot be executed as
communication with Antenna has not
been established. This could indicate
an Antenna or D/LNA fault.
ANT NOT READY
SDU FAULT
No action required.
Problem with the antenna. PIMBIT
cannot be executed until
communication with the antenna is
established. Check the cable
connections of the SDU and the
antenna and check the antenna
status. "BITE" on page 4-6. Once the
connection has been established,
wait for PIMBIT status to change to
READY and run PIMBIT.
Self test has found internal SDU fault. Check BITE status. See "BITE" on
page 4-6.
TEST FREQ UNAVAIL No test frequencies less than 168
hours old available for a viable
satellite.
Log on to an I-4satellite to obtain test
frequencies from the SBB bulletin.
Log off, ensure the status changes to
READY and run PIMBIT.
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ARINC 781-500 SDU and SCM
Table 3-4. PIM Test Conditions
Test Status
SAFE MODE
Description
Configuration error detected.
Possible causes:
SATCOM cannot operate until
configuration fault is eliminated (see
description for possible causes).
Once the fault is eliminated, wait for
the status to change to READY and
run PIMBIT.
â˘
Strapping parity error.
â˘
FMPA messages when
standalone mode strapped.
â˘
Secure ORT parameters are not
available.
NOT ALLOWED IN AIR Air/Ground status indicates in air.
PIMBIT cannot be performed while
the aircraft is in the air.
Run PIMBIT when the aircraft is on
the ground.
PIM Test Overall Status
AF
(1)
Action
At the end of the PIM test, the A781-500 SDU displays the test results on the TCP screen.
The TCP displays the overall PIM status and results for each direction. If the overall status is
PASS, the SDU can continue to use SBB services.
If the overall status is FAIL:
⢠Check the cable connections of the antenna and the SDU.
⢠Check the direction in which the test failed and verify that the antenna is not blocked in
that direction. Refer to "Directional PIM Test Results" on page 3-10.
Directional PIM Test Results
(2)
The SDU performs the PIM test with the antenna pointing in different directions and displays
the results of the test in each direction. If the overall status of the PIM test is FAIL, you can
check the specific directions in which the test failed.
For each direction, the PIM test results provide:
⢠Overall Statusâpass or fail
⢠The direction coordinates
⢠The signal degradationâpass level is adjustable in Secure ORT
⢠Possible interferenceâinterference caused by environmental factors, not the SDU
transmit frequencies. Interference indicates that the SDU received a signal in the receive
band even when it wasnât transmitting, therefore an external signal may be interfering
with communication in that direction
⢠Signal and noise levels before and after the testâthe SDU uses this information to check
for possible interference.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Installation and Engineering Drawings
This section contains the Outline and Installation diagrams, and Interconnection and Contact Assignment
drawings for the SDU and SCM.
All foldout pages are odd-numbered and not-backed for print production purposes.
A.
Outline and Installation Drawings
The Outline and Installation drawings on Page 3-23 thru Page 3-28 show the physical
characteristics of the SDU and SCM, and provide installation data for the system.
B.
System Interconnect Drawings
AF
System Interconnect drawings on Page 3-13 thru Page 3-22 show the interconnection details for
the SDU and SCM.
7.
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AF
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
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System Description, Installation, and Maintenance Manual
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Figure 3-3. A781-500 SDU Outline and Installation Drawing, PN 90402752 (Sheet 1 of 3)
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System Description, Installation, and Maintenance Manual
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Figure 3-4. A781-500 SDU Outline and Installation Drawing, PN 90402752 (Sheet 2 of 3)
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Figure 3-5. A781-500 SDU Outline and Installation Drawing, PN 90402752 (Sheet 3 of 3)
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System Description, Installation, and Maintenance Manual
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Figure 3-6. A781-500 SCM Outline and Installation Drawing, PN 90404776 (Sheet 1 of 2)
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Figure 3-7. A781-500 SCM Outline and Installation Drawing, PN 90404776 (Sheet 2 of 2)
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Figure 3-8. A781-500 System Interconnect Drawing, PN 90402748 (Sheet 1 of 3)
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Figure 3-9. A781-500 System Interconnect Drawing, PN 90402748 (Sheet 2 of 3)
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Figure 3-10. A781-500 System Interconnect Drawing, PN 90402748 (Sheet 3 of 3)
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
TESTING AND FAULT ISOLATION
This section provides test procedures to determine the operational readiness of SDU units.
All of the tests are to be performed when the SDU is installed on an aircraft and connected to a TCP.
There are no operational test procedures defined for the SCM. SCM health is determined by accessing the SDU
BITE information.
If the A781-500 equipment passes all tests in this section but does not function according to the installation
requirements, the fault may be with equipment or wiring outside the A781-500 system.
This section includes:
Operational and Diagnostic Testing
â˘
Troubleshooting and Fault Isolation
â˘
Adjustment/Alignment Procedures
â˘
Modification History.
AF
â˘
NOTE: Depending on the version of software installed, the MPU menus described may differ from those shown
as examples in this manual.
Operational and Diagnostic Testing
This section includes the following sections:
⢠General
⢠Test and Fault Isolation Equipment Requirements
⢠SDU Maintenance Port Utility
A.
⢠Operational and Diagnostic Test Procedures.
General
The A781-500 system requires testing for one of the following reasons:
1.
â˘
To verify the operational readiness of the system after installation on an aircraft
â˘
To verify that a fault exists and produce system reports for troubleshooting purposes
â˘
To verify the operational readiness of repaired LRUs after re-installation on an aircraft.
This section includes test and fault isolation procedures for the A781-500 system. All test and load
procedures require the A781-500 SDU MPU, which is accessed by connecting to the maintenance
port of the SDU.
B.
Test and Fault Isolation Equipment Requirements
Table 4-1 lists the equipment required to access the SDU Maintenance Port Utility and perform
operational and diagnostic testing on the SDU.
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ARINC 781-500 SDU and SCM
Table 4-1 List of Required Test Equipment
Item
Equipment
Specification
Quantity
Computer
Standard
PC running VT-100 terminal emulator, 1
such as Hyper Terminal and equipped
with an RS-232 port.
VT-100 terminal
emulation program
HyperTerminalŠ,
ProComm PlusŠ, or
equivalent
Serial communication program using an 1
RS-232 port
Cable
RS-232 cable
Maximum length 25 feet
Allen key
Standard
3/32 inch Allen key to fit a hex screw with 1
a 4/40 inch head.
C.
SDU Maintenance Port Utility
(1)
AF
This section describes the SDU MPU and provides the connection and cabling details required to
access and use the program.
Connecting to the MPU
The MautoPU provides a system interface for fault isolation and diagnostic procedures.
To use the SDU MPU:
(a) Using a 3/32 Allen key, remove the maintenance port cover.
(b) Connect an RS-232 and VT-100 terminal (computer operating a terminal emulation
program) to the RS-232 maintenance port interface of the SDU.
The maintenance port on the front panel of the SDU provides a direct connection to the MPU
using a DB9 connector.
Figure 4-1 provides cabling details for the SDU maintenance port.
Figure 4-1. Maintenance Cable
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ARINC 781-500 SDU and SCM
(a)
Interface Requirements
A standard VT-100 compatible terminal running an emulator program (such as
HyperTerminal, ProComm Plus, or similar) provides the user interface to the SDU MPU.
The RS-232 terminal connection settings for SDU maintenance ports are listed in
Table 4-2.
Table 4-2 Maintenance Port Connection Settings
Parameter
Character Format
ASCII
Baud Rate
19200 bps
No. of bits
Parity
None
Stop bits
Flow Control
None
AF
(2)
Setting
Using the SDU MPU
This section describes the basic procedures for using and navigating the SDU MPU.
NOTE: There are various levels of access to the MPU. Each level is protected by a different
password. This section describes the MPU functions available using the Level 1
password.
(a)
Entering Passwords
You can enter the password any time after the SDU boots.
⢠To access Level 1 functions, type menu.
NOTE: The password does not appear on the screen when you type it.
Navigating the SDU MPU
(b)
⢠To scroll through the available menus, press CTRL+N.
⢠To go to the previous menu, press CTRL+O.
⢠To refresh the menu screen or exit from a Reports Menu, press ESC.
(c)
Selecting Menu Items
⢠To enable test or data entry functions, press the letter associated with the menu items.
(d)
Selecting Reports
The reports available through the MPU enable users to view information about the
configuration and status of the SDU. This information is used to troubleshoot the
communication system on the aircraft.
To access reports:
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In the MPU, press EQUAL SIGN (=).
A list of reports appears. Active reports show as toggled on. Inactive reports show
as toggled off.
To activate a report, type the report number, and then press ENTER.
NOTE: Multiple reports can be activated at the same time; type and enter each
report number separately.
(3)
To turn off individual, active reports, type the report number you want to toggle off,
and then press ENTER.
To turn off all active reports, press EQUAL SIGN (=), and then press X.
Menu Item Descriptions
AF
This section provides a brief description of the Level 1, MPU menu items used for test and
fault isolation procedures.
In active SDUs, menu screens display the firmware version.
NOTE: Depending on the version of software installed and the system configuration, the
menu and reports available to users may differ slightly from the reports described in
this document.
(a)
Menu 1
Table 4-3 shows an example Menu 1 screen display.Table 4-3 describes the items
available in Menu 1.
Table 4-3 Menu 1 Item Descriptions
Menu Item
Description
Y: explain error status Reports error status when failure LED is illuminated. Displays OK if no error
exists.
F: print equipment
stats
(b)
Prints a list of the current equipment statistics, including temperature,
number of power-ups, hours of operation, time since power-up, and
processor usage.
Menu 2
Table 4-4 describes the items available in Menu 2.
Table 4-4 Menu 2 Item Descriptions
Menu Item
Description
L: re-enter logon
password
Permits a user to enter a new access level password without having to
reboot the SDU.
Z: reset A781 SDU
Enables a complete, soft reset of the SDU; once reset, the menu access
password must be re-entered.
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Table 4-4 Menu 2 Item Descriptions (Continued)
Menu Item
Description
V: get firmware versions Displays the kernel and application software versions for the Control
Processor, Data I/O Processor, Channel Cards.
C: query loss of cooling Indicates if loss of cooling mode is active or inactive.
mode
(c)
Menu 3
Table 4-5 describes the items available in Menu 3.
Table 4-5 Menu 3 Item Descriptions
Menu Item
Lists Classic call logs for the following events:
AF
F: list call log
Description
⢠Successful Aero Log-on
⢠Air-to-ground calls accepted by the SDU
⢠Ground-to-air calls accepted by the SDU
Lists SBB call logs for the following events:
⢠Attachment or modification of attachment, including change of beam ID
⢠Creation or deletion of primary or secondary contexts
O: list DIO ORT
Verifies if file name of the internal copies of the Secure and User ORT
are valid or corrupted.
Y: verify CP ORT
Lists of ORT items destined for the Data Processor in human readable
form.
Clears the call log after a confirmation.
H: list SCM/CP ORT
Lists ORT settings and how they were configured (either by default or
through the maintenance port, or via SCM ORT files). âSet by
maintenance portâ indicates that the ORT parameter is set by the
maintenance port.
G: clear call log
D.
Operational and Diagnostic Test Procedures
You can perform all test procedures presented in this section to test the total operational status of
the A781-500 system. You can conduct these operational tests for all equipment returned to service
after repair.
The procedures assume that the technical personnel are familiar with the test equipment used and
can operate the equipment to produce the required inputs and obtain the required results
(indications). Refer to the detailed operating procedures and descriptions of the SDU MPU included
in this section.
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CAUTION:
ONLY AUTHORIZED TECHNICAL PERSONNEL WHO ARE TRAINED IN
GENERAL AVIA1.57 TION WORKMANSHIP AND HAVE A BASIC
UNDERSTANDING OF SATCOM SYSTEMS SHOULD PERFORM THE
OPERATIONAL AND DIAGNOSTIC TEST PROCEDURES IN THIS MANUAL.
CAUTION:
CHANGES TO DEFAULT VALUES FOR SOME MENU FUNCTIONS MAY
SERIOUSLY DEGRADE SYSTEM OPERATION.
NOTE: This manual describes the basic MPU functions, menus, and reports required for the testing
and fault isolation procedures presented in this section. Consult RC Product Support before
entering any unfamiliar menu selections not described in this manual.
NOTE: Using a terminal emulation program, open a log file and save all test results for future
reference and test records.
Refer to the Outline and Installation diagrams (Figure 3-1 to Figure 3-6) and the Interconnection
and Contact Assignment drawings (Figure 3-7 to Figure 3-9) for additional information.
Test Setup Procedure
AF
(1)
The test setup procedure is presented in Table 4-6.
Table 4-6 Test Setup Procedure
Step
Action
Make sure that the SDU is powered down and disconnected from the power source.
2.0
Using a 3/32 Allen key, remove the maintenance port cover.
3.0
Connect a maintenance cable to the SDU front-panel maintenance port connector.
4.0
Connect the other end of the cable to the serial port of the computer.
5.0
Open a log file to capture all test data. A log file is a text capture of the ASCII traffic
1.0
between the computer attached to the maintenance port and the SDU.
Follow the procedures in "Installation and Operational Verification Tests" on page 4-6.
6.0
(2)
Installation and Operational Verification Tests
To verify that the A781-500 system is ready for operation, use the following procedures:
⢠Power-On Test
⢠BITE
(a)
Power-On Test
To complete the power-on test, follow the steps in Table 4-7.
Table 4-7 Power-On Test Procedure
Step
Action
1.0
Follow the test setup procedure in Table 4-6 on page 6.
2.0
Power-on the SDU.
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Table 4-7 Power-On Test Procedure (Continued)
Step
Action
3.0
Check the status of the front panel LEDs. Verify that the green LED flashes for 60
seconds and then turns off. Verify that the red LED is not illuminated. For more
information about the LED signals, refer to "LEDs" on page 1-9.
4.0
Follow the BITE test procedure in "BITE" on page 4-7.
(b)
BITE
If equipment connected to the A781-500 system provides wrong information or does not
provide a signal to the A781-500 SDU, the SDU cannot function properly.
The SATCOM BITE menu provides information about the results from BITE for various
parts of the A781-500 system.
AF
To check the BITE status, follow the steps in Table 4-.
Table 4-8 Power-On Test Procedure
Step
Action
1.0
Using the TCP, navigate to the SATCOM BITE page. See "Viewing BITE Information"
on page 2-15.
2.0
Confirm that the following report a status of OK:
SDU
â˘
Sub System Health
â˘
SCM
â˘
SYS BUS
â˘
Sub System BUS
â˘
â˘
RF Path
3.0
If BITE fails the SDU or SCM, remove the component from service and return it to
RCâsee "Maintenance and Repair" on page 5-1. Return the UUT along with a
hardcopy printout of the recorded (captured) log file of the test results. Indicate the
date of the test and the serial number of the UUT on the test documentation.
4.0
If BITE fails a component other than the A781-500 SDU or SCM, verify the operation
of that component and test the satellite communication system again. See
"Troubleshooting and Fault Isolation" on page 4-8
5.0
If the Unit Under Test (UUT) PASSED the test, the unit is ready for service.
6.0
Follow the procedures in "Post Test" on page 4-7.
(3)
Post Test
When testing is completed, follow the steps in Table 4-9.
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Table 4-9 Post Test Procedure
Step
Action
1.0
Save the log file of the test results (or data) for future reference.
2.0
Remove power from the SDU that was tested and from all other test equipment.
3.0
Disconnect test equipment from the SDU.
4.0
Replace the maintenance-port connector cover (if it was removed during the test
setup).
2. Troubleshooting and Fault Isolation
This section provides troubleshooting procedures for A781-500 systems.
AF
Troubleshooting procedures require data obtained using the TCP. For specific instructions on how to access
and use the TCP, refer to "Operating the MCDU" on page 2-2.
NOTE: All of the TCP menus discussed in this section are accessed from the SATCOM BITE menu.
A.
Subsystem Health
The SATCOM SUBSY HLTH menu provides the BITE status of subsystem components.
To check the subsystem health, on the SATCOM BITE menu, press the button next to SUBSY
HLTH.
Figure 4-2 illustrates the SATCOM SUBSY HLTH menu.
10
S A T C O M
15
20
S U B S Y
H L T H
24
L N A
1L
O K
2L
O K
C O N F
3L
4L
1R
2R
3R
4R
A N
P A R
T Y
O K
< R E T U R N
Figure 4-2. SATCOM Subsystem Health Menu
Table 4-10 describes the information available on the SATCOM SUBSY HLTH menu.
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ARINC 781-500 SDU and SCM
Table 4-10 SATCOM Subsystem Health Menu
Label
LNA
Description
Action
Reports the status of the LNA as OK, NO DATA (if
golden label 350 from the antenna is missing or
HGA is disconnected), TEST, or FAULT. The LNA
status matches the HDA status.
If the status is NO DATA, check
the bus connections from the
Antenna and check the speed of
bus.
If the status is FAULT, test or
troubleshoot the LNA equipment.
Reports the status of the HGA as OK, FAULT,
TEST, or NO DATA.
FMPA
Reports the status of the FMPA as OK, FAULT, NO If the status is FAULT, return the
DATA, or NONE. If there is no FMPA configured, FMPA to RC, the equipment
the reported status is NONE.
supplier. If the status is NO DATA
check the cable to the FMPA.
CONFIG
PARITY
Reports the status of the rear connector
If the status is FAULT, check
configuration parity as OK (parity is odd) or FAULT strappingâa non-supported
(parity is not odd). This status can be different from configuration may be strapped.
the setting of Bit 25 in Label 350 to the CMC, which
is also set if the secure ORT is missing or invalid.
B.
If the status is FAULT, test or
troubleshoot the HGA equipment.
If the status is NO DATA check the
ARINC 429 bus from the Antenna.
AF
ANT
SATCOM System Bus
The SATCOM SYSTEM BUS menu provides information about the bus status of equipment outside
the A781-500 system. SATCOM services are not available if the equipment does not operate or
communicate properly.
To check the bus status, on the SATCOM BITE menu, press the button next to SYS BUS.
Figure 4-3 illustrates the SATCOM System Bus menu.
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ARINC 781-500 SDU and SCM
S A T C O M
2L
3L
4L
F D S
3L
4L
N A C
O K
T C
P #
O K
T C
P #
O K
R S
P R
O K
R S
E C
O K
< R E T U R N
10
S A T C O M
C M U
G N S
E S
15
S Y S
20
B U S
N A
1R
2R
3R
4R
24
O K
1R
2R
3R
4R
O K
O K
B U S
C M U
2L
24
P #
S Y S
20
T C
1L
15
AF
1L
10
< R E T U R N
Figure 4-3. SATCOM System Bus Menu
Table 4-11 describes the information available on the SATCOM SYS BUS menu.
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Table 4-11 Bus Status Indicators
Status
Bus
INACTIVE
NO DATA
NONE
CFDS
No labels of correct
speed on bus.
CFDS
The A781-500 does not support or receive input from the CFDS. Therefore the status will
always be NONE.
TCP
No labels of correct
speed on bus.
The expected Golden The secure ORT
The expected Golden
label (377) is not
parameter indicates label is present and the
present.
the bus is not installed. bus is active at the
correct speed.
IRS - PRI
No labels of correct
speed on bus.
The expected Golden
label (310) is not
present, i.e. Label 310
or Label 254,
depending on ORT
selection.
IRS - SEC
No labels of correct
speed on bus.
The expected Golden The IRS2Type secure
label (310) is not
ORT parameter
present.
specifies whether it is
connected or not
connected.
GNSS
No labels of correct
speed on bus.
The expected Golden The secure ORT
The expected Golden
label (110) is not
parameter indicates label is present and the
present.
the bus is not installed. bus is active at the
correct speed.
No labels of correct
speed on bus.
The expected Golden The secure ORT
The expected Golden
label (275) is not
parameter indicates label is present and the
present.
the bus is not installed. bus is active at the
correct speed.
No labels of correct
speed on bus.
The expected Golden The secure ORT
The expected Golden
label (270) is not
parameter indicates label is present and the
present.
the bus is not installed. bus is active at the
correct speed.
CMU
C.
AF
N/A
(Primary IRS always
present on this
aircraft.)
The expected Golden
label is present and the
bus is active at the
correct speed.
The expected Golden
label is present and the
bus is active at the
correct speed.
The expected Golden
label is present and the
bus is active at the
correct speed.
AES ID
The expected Golden The bus is not
label (227) is not
installed.
present.
OK
Thermal Status
As shown in Figure 4-4, the SATCOM OVERTEMP menu reports the thermal status of system
components.
To check the thermal status, on the SATCOM BITE menu, press the button next to OVERTEMP.
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1L
3L
4L
20
24
F A
< R E T U R N
1R
2R
3R
4R
AF
15
O V E R T E M P
O K
2L
10
S A T C O M
Figure 4-4. SATCOM Overtemp Menu
Table 4-12 describes the information available on the SATCOM OVERTEMP menu.
Table 4-12 SATCOM OVERTEMP Menu
Label
Description
Action
Reports the SDU thermal status If the status is FAIL, check the fan operation and
as OK or FAIL.
temperature at the location of the equipment.
HGA
Reports the HGA thermal status If the status is FAIL, check the fan operation and
as OK, NO DATA, or FAIL.
temperature at the location of the equipment.
If the status is NO DATA, check data bus connection.
Reports the FMPA thermal status If the status is FAIL, check the fan operation and
as OK, NO DATA, or FAIL.
temperature at the location of the equipment.
FMPA
SDU
D.
SCM Health
As shown in Figure 4-5, the SATCOM SCM menu reports the status of the communication buses
to the SCM and the status of the secure and user configuration tables.
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10
S A T C O M
T A
1L
O K
2L
O K
3L
4L
15
20
24
S C M
T U S
O S S
O K
B U S
T O
F R O M
A M
1R
2R
3R
4R
O K
< R E T U R N
AF
Figure 4-5. SATCOM SCM Menu
Table 4-13 describes the information available on the SATCOM SCM menu.
Table 4-13 SATCOM SCM Menu
Label
Description
Action
Reports the SCM status as OK or FAIL.
BUS
TO/FROM
Reports the status of the bus to the SCM as If the status is FAIL, check the
OK or FAIL.
connections to the SCM.
OSS
Reports the status of the Secure ORT as
one of the following:
STATUS
If the status is FAIL, return the SCM to
RC the equipment supplier.
If the status is INVALID or NOT
LOADED, load a SECURE ORT file.
NOT LOADED â No ORT in SCM memory.
OK â Secure ORT is valid.
INVALID â The Secure ORT is corrupted or
otherwise invalid and must be reloaded.
AMI
Reports the status of the User ORT as one If the status is INVALID or NOT
of the following:
LOADED, load a USER ORT file.
NOT LOADED â No ORT in SCM memory.
OK â User ORT is valid.
INVALID â The User ORT is corrupted or
otherwise invalid and must be reloaded.
E.
Subsystem Bus Status
As shown in Figure 4-6, the SATCOM SUBSY BUS menu reports the status of all subsystem buses
that provide communication between the components of the system.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
S A T C O M
1L
10
15
S U B S Y
A N
3L
4L
O K
1R
2R
3R
4R
O K
< R E T U R N
AF
24
B U S
I N - T O P - O U T
2L
20
Figure 4-6. SATCOM Subsystem Bus Menu
Table 4-14 describes the information available on the SATCOM SUBSY BUS menu. Fields are left
blank if the equipment is not included in the installation.
NOTE: Input and output are with respect to the SDU.
Table 4-14 SATCOM SUBSY BUS Menu
Action
Reports the status of the input and If status is NO DATA, label 350 is missingâ
output buses for the antenna as OK, check the bus connections.
NO DATA, or FAIL.
If status is FAIL, check antenna bus status.
ANT
Description
Label
F.
RF Path Status
As shown in Figure 4-7, the SATCOM RF PATH menu reports the status of the RF paths.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
P A
1L
10
S A T C O M
15
R F
20
24
P A T H
S W R
1R
N / A
2R
O K
3R
4R
R X : S D U - D L N A
2L
O K
T X : S D U 7
4L
N / A
< R E T U R N
AF
3L
D L N A
Figure 4-7. SATCOM RF Path Menu
Table 4-15 describes the information available on the SATCOM RF PATH menu.
Table 4-15 SATCOM RF PATH Menu
Label
Description
RX:DLNA-SDU
Reports the status of the RF path from the DLNA to the SDU as OK or FAULT.
If the status is FAULT, check Rx RF cabling between the SDU and the antenna.
USIM and Data Bus Status
G.
Reports the status of VSWR activity on the SDU-Antenna RF path as OK or
FAULT. If the status is FAULT, check Tx RF cabling between the SDU and the
antenna.
TX:SDU-ANT
As shown in Figure 4-8, the SATCOM USIM/DATA menu reports the status of the USIMs and data
buses of the system.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
S AT C O M
U S
1L
O K
2L
N / A
U S
M #
15
20
U S I M / D A T A
E T H
M #
Q U A D
E T H
D I S A B L E D
Q U A D
E T H
< R E T U R N
1R
2R
3R
4R
D I S A B L E D
L I N K
E T H
4L
24
D I S A B L E D
E T H
3L
10
D I S A B L E D
AF
Figure 4-8. SATCOM USIM/DATA Menu
Table 4-16 describes the information available on the USIM/Data menu.
Table 4-16 SATCOM USIM/DATA Menu
Label
USIM#1
Description
Reports the status of USIM#1 bus as OK, WARMING, SBB LOG, FAULT, or N/A
if channel card 1 is not in SBB mode.
If status is FAULT, check that SIM card is not damaged and is properly inserted.
Power cycle after checking.
USIM#2
Reports the status of USIM#2 bus as N/A.
USIM#3
If status is FAULT, check that SIM card is not damaged and is properly inserted.
Power cycle after checking.
Reports the status of USIM#3 bus as N/A.
If status is FAULT, check that SIM card is not damaged and is properly inserted.
Power cycle after checking.
USIM#4
Reports the status of USIM#4 bus as N/A. If status is FAULT, check that SIM card
is not damaged and is properly inserted. Power cycle after checking.
ETH#1
Reports the status of ETH#1 bus as DISABLED, LINK, or NO LINK.
ETH#2
Reports the status of ETH#2 bus as DISABLED, LINK, or NO LINK.
QUAD ETH#3
Reports the status of QUAD ETH#3 bus as DISABLED, LINK, or NO LINK.
QUAD ETH#4
Reports the status of QUAD ETH#4 bus as DISABLED, LINK, or NO LINK.
ETH#5
Reports the status of ETH#5 bus as DISABLED, LINK, or NO LINK.
NOTE: Only Ethernet 3 is fully supported. Ethernet 1, 2, and 5 are not supported and Ethernet 4
is only used for application data loading.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
H.
ORT
The A781-500 system may not function properly if the ORT parameters do not match the installed
system.
(1)
ORT Use and Storage
The ARINC 781 system includes a secure and user ORT. Secure ORT files must be certified
for the aircraft type on which the equipment is installed. Items in user ORT files can be
modified by individual customers and may be customized to an individual aircraft.
You can change secure ORT parameters only by uploading an ORT file. To obtain an ORT
file, contact RC Product Support.
The load procedure loads an ORT file to the SCM using an ARINC 615A data loader. You can
only load ORT data when the aircraft is on the ground and the data load discrete is asserted.
When the SDU boots, it compares the ORT file in its memory to that in the SCM. If the ORT
files do not match, the SDU loads the file from the SCM into its memory.
(2)
AF
Some user ORT parameters can be modified in the SDU ORT. You can reset the SDU ORT
to the default values stored in the SCM in the maintenance menus.
Checking the ORT
You can check the content of the ORT file through the maintenance port menus. "SDU
Maintenance Port Utility" on page 4-2 provides information about accessing the maintenance
port menus.
NOTE: The ORT includes many parameters that affect internal operations. These
parameters are not meaningful for technicians troubleshooting the satellite
communication system.
To check the ORT:
(a) In the maintenance port menus, navigate to menu 3.
(b) To list the ORT, press H.
The list of ORT parameters appears. The list is about eight pages long.
Some ORT parameters displayed are system defaults that cannot be modified through
the Secure and User ORT files.
(c) Compare the ORT parameters to the system installed in the aircraft.
I.
Contact Product Support
When the troubleshooting procedures do not find a fault and the A781-500 system does not function
properly, contact RC Product Support.
RC Product Support may ask you to capture and send them system specific logs and reports.
To access logs:
(1)
In the maintenance port menus, navigate to Menu 3.
(2)
Turn on the text capture feature of the terminal emulator on your computer.
In HyperTerminal, click Transfer, and then click Capture Text.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
(3)
To view the call log, in Menu 3, press F.
(4)
Turn off the text capture feature of the terminal emulator and send the captured file to RC
Product Support.
To access reports:
(1)
Turn on the text capture feature of the terminal emulator on your computer.
In HyperTerminal, click Transfer, and then click Capture Text.
(2)
In the maintenance port menus, press EQUAL SIGN (=).
A list of reports appears.
(3)
To activate a report, type the number next to the report description, and then press ENTER.
NOTE: RC Product Support will specify the required reports, and may ask you to operate the
A781-500 equipment while the reports gather information.
To stop a report, press EQUAL SIGN (=), then type the number of the report, and then press
ENTER.
AF
(4)
NOTE: To stop all reports, press X.
(5)
Turn off the text capture feature of the terminal emulator and send the captured file to RC
Product Support.
3. Adjustment/Alignment Procedures
There are no adjustment/alignment procedures required for the A781-500 system.
4. Modification History
The A781-500 system currently has no history of modifications.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
MAINTENANCE AND REPAIR
This section provides maintenance and repair information for the A781-500 system, including the following
sections:
â˘
Maintenance
â˘
Repair
â˘
Instructions for Continued Airworthiness
â˘
Visual Inspection and Check
1.
Maintenance
The A781-500 system does not require routine maintenance.
2.
Repair
AF
If functional problems occur, the SDU BITE identifies the faulty LRU.
As per continued airworthiness instructions, if an SDU or SCM is inoperative, use the Standard Practices
Chapter of the Aircraft Maintenance Manual to:
â˘
Remove the unit
â˘
Secure cables and wiring
â˘
Collar applicable switches and circuit breakers, and placard them as âinoperativeâ.
Before flight, revise the equipment list and weight and balance data as applicable, and record the removal
of the unit in the log book. Refer to section 91.213 of the FAR or the aircraftâs minimum equipment list
(MEL).
All repairs must be performed at the RC equipment supplier factory.
Instructions for Continued Airworthiness
Periodic inspections of the mechanical and electrical interfaces of the A781-500 system components to
the aircraft should be completed as defined by the governing airworthiness bodyâs Instructions for
Continued Airworthiness (ICA) for the installation (for example, Transport Canada, the FAA, the EASA).
3.
Installation of the ARINC 781 SATCOM Avionics System on an aircraft by Supplemental Type Certificate
(STC) obligates the aircraft operator to include the maintenance information supplied by this manual in
the operatorâs Aircraft Maintenance manual and the operatorâs Aircraft Scheduled Maintenance Program.
This section provides the special instructions and maintenance requirements for continued airworthiness
of the A781-500 system.
A.
Airworthiness Limitations
When applicable, the Airworthiness Limitations section is FAA-approved, and specifies
maintenance required under Title 14 Code of Federal Regulations (CFR) Part 43.16 and 14 CFR
91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved.
This section must be added to the Airplane Maintenance Manuals. The information contained
herein supplements the Airplane Maintenance Manuals only in those areas covered by the
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
A781-500 system installation. For limitations and procedures not contained in this supplement,
consult the basic Airplane Maintenance Manuals.
The inspections and airworthiness limitations specified in this section are FAA approved. This
section specifies the inspections and other maintenance required under sections 433.16 and
91.403 of the Federal Aviation Regulations unless an alternative program has been FAA approved.
B.
Electrical and Mechanical Inspection and Check
Periodic inspections of the mechanical and electrical interfaces of the A781 system components to
the aircraft should be completed as defined by the governing airworthiness body (for example,
Transport Canada, the FAA, the EASA).
C.
Instructions for Continued Airworthiness
The following paragraphs describe all maintenance requirements and instructions for continued
airworthiness of the A781-500 system:
AF
1. This manual contains maintenance information for the and SCM, including system description,
system operation, installation, test, and fault isolation.
2. Add the following information to the illustrated parts catalog for the aircraft:
⢠All part numbers referred to in this manual
⢠All LRUs referred to in this manual.
3. Add all wiring diagram information contained in this manual to the aircraft operatorâs
appropriate aircraft Wiring Diagram Manuals.
4. No additional or routine maintenance is required for the on-condition SDU or SCM.
5. If an SDU or SCM is inoperative, follow the instructions listed in "Repair" on page 5-1.
6. Return all units to the RC equipment supplier factory for repair. Refer to "Appendix A: Return
Material Authorization" on page A-1 for detailed removal information and procedures.
7. Install repaired units on the aircraft in accordance with the installation instructions provided in
this manual.
8. Make sure that all repaired units are operating before approving them for return to service,
using the operational verification tests and procedures provided in this manual.
9. Enter the approval for return to service in the logbook, as required by section 43.9 of the FAR.
10. Add the following scheduled maintenance tasks to the aircraft operatorâs appropriate aircraft
maintenance program:
(a) Recommended periodic scheduled servicing tasks: None required.
(b) Recommended periodic inspections: as per the aircraft inspection and maintenance
schedule.
(c) Recommended periodic scheduled preventative maintenance tests (tests to determine
system condition and/or latent failures): None required.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Visual Inspection and Check
Perform the following procedures to inspect the SDU and SCM after installation of the units onto the
aircraft.
Follow all approved safety standards and practices during the inspection.
1. Disconnect all circuit breakers to the SDU and SCM and associated systems.
CAUTION:
FAILURE TO DISCONNECT CIRCUIT BREAKERS CAN LEAD TO INJURY TO THE
OPERATOR AND DAMAGE TO THE EQUIPMENT.
2. Examine the connection for loose, damaged, or missing hardware.
â˘
Corrosion
â˘
Chafing
â˘
Wear
â˘
Damage.
AF
3. Examine cables and connections. Contact RC Product Support to gauge the severity of the damage
if you find:
4. Tighten any loose connectors to the manufacturerâs recommended value.
4.
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AF
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
Blank Page
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
APPENDIX A: RETURN MATERIAL AUTHORIZATION
To return equipment to RC for repair, this RMA procedure must be followed. Failure to comply with this procedure
may result in shipping delays and additional charges.
1.
Warranty Returns
Equipment that qualifies for warranty repair can be returned to RC for repair or replacement at their
discretion. The customer shall pay the shipping costs to RC and RC will pay the shipping costs to return
the repaired/replaced unit to the customer.
2.
Non-Warranty Returns
Equipment that fails to work properly because of improper or negligent use, abuse, shipping damage, or
any other condition can still be returned to RC for repair or replacement at their discretion. The customer
will be notified of the cost to repair or replace the unit before invoicing for the repair or replacement. The
customer shall pay for the shipping costs to and from RC.
Repackaging Requirements
AF
3.
ARINC 781 SDU or SCM components must be returned to RC in approved shipping containers. Failure
to do so may invalidate the warranty.
If SDU or SCM shipping containers are unavailable, they can be ordered from RC when requesting the
RMA number.
RMA Procedure
If it is determined that equipment must be returned to RC for repair or overhaul, follow the RMA procedure
below.
1. Have the following information ready before calling RC Product Support:
â˘
Model (e.g., A781-500 SDU)
â˘
Unit part number (e.g., 90402750, 90404775)
â˘
Serial number
â˘
Description of failure
â˘
Aircraft tail number, serial number, and aircraft model number
4.
2. An RC Product Support specialist will attempt to resolve the problem by telephone. If equipment must
be returned to RC, the Product Support Specialist will authorize the R&O Coordinator to issue an RMA
number.
3. Pack the equipment in the original shipping container or a container approved by RC.
4. Write the RMA number on the outside of the shipping container and on all shipping documents, enclose
a copy in the box, and send your prepaid shipment to RC.ď
ď
[RC to complete]
5. Fax or email the details of the shipment to the R&O Coordinator, including the following information:
Shipment date, carrier name, and the waybill number.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-500 SDU and SCM
AF
6. The processing of LRU returns is limited to standard business hours from 8:30 am to 5:00 pm EST.
For general inquires and status requests, contact the R&O department directly:ď
ď
Phone: [RC to complete]ď
Email: [RC to complete]ď
Fax: [RC to complete]
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