ARINC 781 SDU, SCM, and FMPA System Description, Installation, and Maintenance Manual MN-1394-10078, Revision 001 This document provides procedures for the equipment listed below.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA RECORD OF REVISIONS When revisions are received, insert revised pages, record the date, and initial.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA SERVICE BULLETIN LIST Service Bulletin Number Subject 23-15-30 Manual Rev. Manual Rev.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA LIST OF EFFECTIVE PAGES * An asterisk indicates pages changed, added, or deleted by the current revision. F indicates a right foldout page with a blank back.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA TABLE OF CONTENTS INTRODUCTION 1. Illustration of Equipment .............................................................................INTRO-1 2. Acronyms and Abbreviations......................................................................INTRO-2 3. Safety Advisories .........................................................................................INTRO-4 SYSTEM DESCRIPTION 1. Inmarsat System Overview.......
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA (2) Input Ports.................................................................................................................... 2-1 (3) Screen.......................................................................................................................... 2-1 (4) Keyboard......................................................................................................................
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA (3) Menu Item Descriptions ............................................................................................... 4-4 D. Operational and Diagnostic Test Procedures .................................................................. 4-6 (1) Test Setup Procedure................................................................................................... 4-7 (2) Post Test .......................................
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA LIST OF FIGURES Figure INTRO-1 Satellite Data Unit.....................................................................................INTRO-1 Figure INTRO-2 SDU Configuration Module.......................................................................INTRO-2 Figure INTRO-3 Flange Mounted Power Amplifier .............................................................
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 4-10 SATCOM RF Path Menu, System with FMPA........................................................ 4-15 Figure 4-11 SATCOM USIM/DATA Menu .................................................................................
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA LIST OF TABLES Table 1-1 SDU Physical Characteristics and Specifications....................................................... 1-4 Table 1-2 SCM Physical Characteristics and Specifications ...................................................... 1-5 Table 1-3 External FMPA Physical Characteristics and Specifications ......................................
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA INTRODUCTION This manual provides the specifications, principles of operation, and information necessary to install the ARINC 781 SATCOM Avionics System, including the Satellite Data Unit (SDU), SDU Configuration Module (SCM), and Flange Mounted High Power Amplifier (FMPA).
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure INTRO-2 shows the SCM. Figure INTRO-2 SDU Configuration Module Figure INTRO-3 shows the FMPA. Figure INTRO-3 Flange Mounted Power Amplifier 2.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA AORE Atlantic Ocean Region-East AORW Atlantic Ocean Region-West APAC Asia-Pacific BIT Built-In-Test BITE Built-In-Test Equipment BSU Beam Steering Unit CEPT-E1 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 Elec
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA MES Mobile Earth Station MHz Megahertz MOPS Minimum Operational Performance Standards MPU Maintenance Port Utility ORT Owner Requirement Table POR Pacific Ocean Region POTS Plain Old Telephone System RF Radio Frequency RMA Return Material Authorization RTN Return Rx Receive SATCOM Satellite Communications SBB SwiftBroadband (Inmarsat) SCM SDU Configuration Module SDU Satellite Data Unit SLU
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA understand and perform procedures. All personnel who install, operate, and maintain the ARINC 781 SDU, SCM, FMPA, 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.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA SYSTEM DESCRIPTION This section includes basic information about the ARINC 781 avionics system, including the following sections: • Inmarsat System Overview • Equipment Overview • Equipment Specifications • System Interfaces • User Interfaces • Software Description 1. Inmarsat System Overview This section provides an overview of the Inmarsat satellite communications system and networks.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA In addition to the services offered by I-3 satellites, the 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 such as video conferencing.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA • Classic Aero-H+—Provides packet data services at 600 bps, 1200 bps, or 10500 bps over the PRT channel combination and half-rate circuit switched voice or data service over the C channel. • Swift 64—Provides packet switched Mobile Packet Data Service (MPDS). • SwiftBroadband—Provides AMBE+2 voice (circuit-switched) and broadband packet switched services.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 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. C. FMPA The FMPA is an optional component that provides amplification for configurations requiring an external HPA.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 1-1 SDU Physical Characteristics and Specifications (Continued) CHARACTERISTIC SPECIFICATION Heating and Cooling Cooling Air ARINC 600 Flow Rate 50 kg/hr 40°C (max) air Pressure Drop 5 ± 3 mm H2O Mounting Information 6 MCU tray as per ARINC 600 Electrical Interfaces Power/Control interface as per ARINC 781 Power Requirements Input Voltage (AC) 96 to 122 V AC, 300 to 900 Hz Input Voltage (DC) 18 to 32.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 1-2 SCM Physical Characteristics and Specifications (Continued) CHARACTERISTIC SPECIFICATION Mounting Information 4 x 0.125" holes on 3.3" x 3.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 1-4 ARINC 781 System RTCA/DO-160E Environmental Characteristics Section Category Environmental Condition SDU/SCM FMPA 4.0 Temperature and Altitude F2/A2 F2/A2 4.5.1 Ground Survival Low F2 F2 4.5.1 Short Term Operating Low Ambient F2 F2 4.5.2 Operating Low Ambient F2 F2 4.5.3 Ground Survival High F2 F2 4.5.3 Short Time Operating High F2 F2 4.5.4 Operating High Ambient F2 F2 4.5.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 1-3 ARINC 781 Avionics System Block Diagram A. SDU The SDU is divided into the following SRUs: • Channel Cards (2) • Control and Data Processor Card • Voice and Router Processor Card • Power Amplifier • ARINC Backplane • DIN Backplane • 10 MHz Oven Controlled Crystal Oscillator • Power Supply The major interfaces of the SDU are listed in Table 1-5.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 1-5 SDU System Interfaces System Interface Description ACU/BSU (x1) Antenna Control Unit/Beam Steering Unit FMPA (x1) Flange Mount Power Amplifier MCDU (x3) Multi-Purpose Control and Display Unit 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 CMC (
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 1-4 FMPA Block Diagram 5. User Interfaces This section describes the ARINC 781 SDU interfaces that enable users to access Inmarsat services and monitor the operation of the ARINC 781 avionics system. NOTE: There are no user interface associated with the SCM and FMPA. A.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA E. CEPT-E1 The SDU supports one CEPT-E1 interface. F. ISDN Two ISDN interfaces are currently not supported. G. Maintenance Port 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 6. Software Description All operating software meets RTCA/DO-178B Level D requirements. The SCM does not contain any software. Only configurable parameters are stored in the SCM. All FMPA software is stored in the Control Processor SRU. It manages BITE, data loading, maintenance, and ARINC 429 label transmission and reception. The SDU software is not partitioned.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 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+, Swift 64, and SwiftBroadband (SBB).
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 2-1 MCDU Screen 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 MCDU has six buttons on each side of the screen that activate MCDU functions. Figure 2-1 displays these buttons on the left and right sides of the screen.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA • 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. (6) Navigating the MCDU The MCDU includes a number of menus, as shown in Figure 2-2.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA B. Logging On and Off Using the MCDU, you can log on to the satellite network manually or automatically: • Manual Logon—constrains the logon to use a satellite that you select • Automatic Logon—logs on using the best available satellite as defined by the ORT If specified in the ORT, the initial system logon happens immediately after the ARINC 781 system powers up, with no MCDU input required.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA (2) Logging On Manually To log on manually, you must select a satellite and GES. To log on manually: 1. On the SAT-PHONE 1/2 page, press the key next to LOG. The SATCOM LOG page appears. 2. Press the key next to SATELLITE ID until the MCDU screen shows the satellite ID to which you want the ARINC 781 system to log on. 3.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 2-1 ARINC 781 System Log Status (Continued) Log Status Description DET SYS TABLE Updating the Satellite table SPOT BEAM SEARCH Selecting the optimal spot beam 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 REJECT-TEMPORARY Logon rejected by the GES, but the condition is temporary REJEC
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 2. 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 4. Optionally, to change the priority of the call, press the key next to PRI. Valid values are PUB (public), LOW (low), HGH (high), and EMG (emergency). NOTE: You cannot change the priority of calls on SAT-R (SBB) channels. SBB calls are always public priority. 5. Press the key next to MAKE CALL. The call status is shown on the SAT-PHONE 1/2 page.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA • SCM health on the line below SCM • Peripheral LRU bus status on the line below SYS BUS • 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 • 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.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA INSTALLATION This section describes the procedures required to install the ARINC 781 system (SDU, SCM, and optionally, FMPA) on an aircraft, including the following sections: • Advisories • Pre-Installation Inspection • Installation Procedure • Connection Details • Installation and Engineering Drawings 1.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 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 “Advisories” on page 8 of this manual. 1. Install the SDU in a 6 MCU tray as per ARINC 600.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 3-1 SDU Rear Connector Pin Deviations Description Pin Deviation Top Plug Insert Pin Deviations Router Processor Maintenance TXD TP01A ATE pin 1 Router Processor Maintenance RXD TP01B ATE pin 2 Router Processor & Data I/O Processor Maintenance GND TP01C ATE pin 3 Data I/O Processor Maintenance TXD TP01D ATE pin 4 Data I/O Processor Maintenance RXD TP01E ATE pin 5 CC1 Processors #1 & #2 Maintenance G
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 3-2 SDU Front Connector DSUB and RJ45 Pin Assignment (Continued) 9S DSUB Pin Number Description RJ45 Pin Number Description 7 NC 7 NC 8 NC 8 NC 9 NC B. SCM 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA These connectors and their pin layouts are compliant with ARINC Characteristic 781. Table 3-4 describes the FMPA connector pin layout.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 5. Installation and Engineering Drawings This section contains the Outline and Installation diagrams, and Interconnection and Contact Assignment drawings for the SDU, SCM, and FMPA. All foldout pages are odd-numbered and not-backed for print production purposes. A.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 3-1 ARINC 781 SDU Outline and Installation Drawing, 1394-E-1100 Rev B00 (Sheet 1 of 2) 23-15-30 3-7 16 APR 10
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 3-2 ARINC 781 SDU Outline and Installation Drawing, 1394-E-1100 Rev B00 (Sheet 2 of 2) 23-15-30 3-9 16 APR 10
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 3-3 ARINC 781 FMPA Outline and Installation Drawing, 1394-E-1200 Rev D00 (Sheet 1 of 2) 23-15-30 3-11 16 APR 10
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 3-4 ARINC 781 FMPA Outline and Installation Drawing, 1394-E-1200 Rev D00 (Sheet 2 of 2) 23-15-30 3-13 16 APR 10
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 3-5 ARINC 781 SCM Outline and Installation Drawing, 1394-E-1300 Rev B00 (Sheet 1 of 2) 23-15-30 3-15 16 APR 10
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 3-6 ARINC 781 SCM Outline and Installation Drawing, 1394-E-1300 Rev B00 (Sheet 2 of 2) 23-15-30 3-17 16 APR 10
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 3-7 ARINC 781 System Interconnect Drawing, 1394-B-1001 Rev A00 (Sheet 1 of 3) 23-15-30 3-19 16 APR 10
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 3-8 ARINC 781 System Interconnect Drawing, 1394-B-1001 Rev A00 (Sheet 2 of 3) 23-15-30 3-21 16 APR 10
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 3-9 ARINC 781 System Interconnect Drawing, 1394-B-1001 Rev A00 (Sheet 3 of 3) 23-15-30 3-23 16 APR 10
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA TEST AND FAULT ISOLATION This section provides test procedures to determine the operational readiness of SDU units. There are no operational test procedures defined for the SCM or FMPA. SCM and FMPA health are determined by accessing the SDU BITE information.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 4-1 List of Required Test Equipment Item Equipment Specification Quantity Computer Standard VT-100 386 CPU, 20 MHz or higher 1 VT-100 terminal emulation program HyperTerminal©, ProComm Plus©, or equivalent Serial communication program using an 1 RS-232 port Cable RS-232 cable Maximum length 25 feet 1 C.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 4-2 Maintenance Port Connection Settings Parameter Setting Character Format ASCII Baud Rate 19200 bps No. of bits 8 Parity None Stop bits 1 Flow Control None (2) 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 4. To turn off all active reports, press EQUAL SIGN (=), and then press X. (3) Menu Item Descriptions 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA MENU 2 FIRMWARE Vx.x GND L re-enter logon password Z reset A781 SDU H query SDU-FMPA cable loss N next menu O V C get firmware versions query loss of cooling mode previous menu = select reports Figure 4-3 Menu 2 Screen Display 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 4-5 Menu 3 Item Descriptions Menu Item F: list call log Description Lists Classic call logs for the following events: • 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
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 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. (1) Test Setup Procedure The test setup procedure is presented in Table 4-6. Table 4-6 Test Setup Procedure Step Action 1.0 Make sure that the SDU is powered down and disconnected from the power source. 2.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 4-8 Power-On Test Procedure Step Action 1.0 Follow the test setup procedure in Table 4-6 on page 4-7. 2.0 Power-on the SDU. 3.0 Power-on the FMPA (if applicable). 4.0 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 1-11. 5.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 4-5 SATCOM Subsystem Health Menu Table 4-9 describes the information available on the SATCOM SUBSY HLTH menu. Table 4-9 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA B. SATCOM System Bus The SATCOM SYSTEM BUS page provides information about the bus status of equipment outside the ARINC 781 system. SATCOM services are not available if the equipment does not operate or communicate properly. To check the bus status, on the SATCOM BITE page, press the key next to SYS BUS. Figure 4-6 illustrates the SATCOM System Bus page.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Table 4-10 Bus Status Indicators Status Bus INACTIVE NO DATA NONE OK IRS - PRI No labels of correct speed on bus. The expected Golden N/A label (310) is not present. The expected Golden label is present and the bus is active at the correct speed. IRS - SEC No labels of correct speed on bus. The expected Golden The IRS2Type secure label (310) is not ORT parameter present.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 4-7 SATCOM Overtemp Menu Table 4-11 describes the information available on the SATCOM OVERTEMP menu. Table 4-11 SATCOM OVERTEMP Menu Label Description Action SDU 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 4-8 SATCOM SCM Menu Table 4-12 describes the information available on the SATCOM SCM menu. Table 4-12 SATCOM SCM Menu Label Description Action STATUS 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA E. Subsystem Bus Status As shown in Figure 4-9, the SATCOM SUBSY BUS menu reports the status of all subsystem buses that provide communication between the components of the system. Figure 4-9 SATCOM Subsystem Bus Menu Table 4-13 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 4-10 SATCOM RF Path Menu, System with FMPA Table 4-14 describes the information available on the SATCOM RF PATH menu. Table 4-14 SATCOM RF PATH Menu Label Description RX:SDU-DLNA Reports the status of the RF path from the DLNA to the SDU as OK or FAULT. TX:SDU-FMPA Reports the status of the RF path from the SDU to the FMPA as OK or FAULT. For systems not configured for FMPA, the status is N/A.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA Figure 4-11 SATCOM USIM/DATA Menu Table 4-15 describes the information available on the USIM/Data menu. Table 4-15 SATCOM USIM/DATA Menu Label Description USIM#1 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. 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 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. Some user ORT parameters can be modified in the SDU ORT.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA MAINTENANCE AND REPAIR This section provides maintenance and repair information for the ARINC 781 system, including the following sections: • Maintenance • Repair • Instructions for Continued Airworthiness • Visual Inspection and Check 1. Maintenance The ARINC 781 system does not require routine maintenance. 2. Repair If functional problems occur, the SDU BITE identifies the faulty LRU.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 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.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 10. Add the following scheduled maintenance tasks to the aircraft operator’s appropriate aircraft maintenance program: 1. Recommended periodic scheduled servicing tasks: None required. 2. Recommended periodic inspections: as per the aircraft inspection and maintenance schedule. 3. Recommended periodic scheduled preventative maintenance tests (tests to determine system condition and/or latent failures): None required. 4.
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SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA APPENDIX A: RETURN MATERIAL AUTHORIZATION To return equipment to the equipment supplier 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 the equipment supplier for repair or replacement at their discretion.
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL ARINC 781 SDU, SCM, and FMPA 4. Pack the equipment in the original shipping container or a container approved by the equipment supplier. 5. 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 the equipment supplier. 6.
