User Manual
AFIRS 228S Iridium Global Communications System Installation Manual
16 July 2014 L-3 Aviation Recorders Proprietary Page 2
165E5733-00 Rev. 03
Table of Contents
RECORD OF REVISIONS ............................................................................................................. iv
List of Figures ..................................................................................................................................4
List of Tables....................................................................................................................................5
Appendices ......................................................................................................................................5
Supplemental Documents ...............................................................................................................5
1. Introduction ................................................................................................................................6
1.1 Applicability ........................................................................................................................6
1.2 Model Designation .............................................................................................................6
1.2.1 Iridium SATCOM System .................................................................................................................... 6
1.3 Part Numbers ....................................................................................................................6
1.4 Reference Documents ......................................................................................................6
1.5 Definitions of Acronyms and Terms ..................................................................................8
2. Description and Operation ...................................................................................................... 12
2.1 System Overview ........................................................................................................... 12
2.2 System Architecture ....................................................................................................... 13
2.3 External System Interfaces ............................................................................................ 13
3. Equipment Specifications ....................................................................................................... 16
3.1 Satellite Data Unit (SDU) ............................................................................................... 16
3.1.1 Mechanical Specifications ............................................................................................................... 17
3.1.2 Environmental Specifications –Iridium SATCOM System .............................................................. 18
3.2 SDU Configuration Module (SCM) ................................................................................. 18
3.2.1 Mechanical Specifications ............................................................................................................... 19
3.2.2 Environmental Specifications .......................................................................................................... 20
3.3 Iridium SATCOM System Satellite Antenna .................................................................. 20
3.4 Antenna Coaxial Cable .................................................................................................. 21
3.5 Interface Specifications .................................................................................................. 22
3.5.1 SDU Rear Connector (J1) .................................................................................................................. 22
3.5.2 Power Input ...................................................................................................................................... 24
3.5.3 Chassis Ground ................................................................................................................................. 24
3.5.4 ARINC 429 Digital Serial Bus Input .................................................................................................. 25
3.5.5 ARINC 429 Digital Serial Bus Output ............................................................................................... 25
3.5.6 Rear Ethernet Ports .......................................................................................................................... 25
3.5.7 Discrete Inputs .................................................................................................................................. 25
3.5.8 Discrete Outputs............................................................................................................................... 26
3.5.9 Microphone Input ............................................................................................................................ 27
3.5.10 Iridium / GPS Antenna ..................................................................................................................... 27