User's Manual
Table Of Contents
- Customer Response Form
- Record of Revisions
- Service Bulletin List
- List of Effective Pages
- Introduction
- System Description
- System Operation
- 1. Registering and Activating Terminals
- 2. Using the A781-200 System
- 3. Channel Status and System Configuration
- 4. Maintenance Mode
- Installation
- Test and Fault Isolation
- Maintenance and Repair
- Appendix A: Return Material Authorization
SYSTEM DESCRIPTION, INSTALLATION, AND MAINTENANCE MANUAL
ARINC 781-200 SDU and SCM
23-15-30 1-2
DATE TBD
I-4 satellites provide worldwide Swif
tBroadband (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)
The satellite communication avioni
cs (A781-200 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.
Figure 1-1 Simplified Aeronautical Satellite Communications System
2. Equipment Overview
The A781-200 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: