User's Manual
Table Of Contents
- Cover
- 1-Welcome Letter
- 2-Table of Contents
- 3-Contacts
- 4-Quick Start Guide Rev 2
- 5-SIM Registration
- 6-Installation and Operations Rev 2
- 7-Component Maintenance Manual Rev 1
- SERVICE BULLETIN LIST
- RECORD OF CHANGES
- RECORD OF REVISIONS
- LIST OF EFFECTIVE PAGES
- LIST OF EFFECTIVE PAGES
- INTRODUCTION
- DESCRIPTION AND OPERATION
- TESTING AND TROUBLESHOOTING
- DISASSEMBLY
- CLEANING
- CHECK
- REPAIR
- ASSEMBLY
- FITS AND CLEARANCES
- SPECIAL TOOLS, FIXTURES AND EQUIPMENT
- ILLUSTRATED PARTS LIST
Airbus Iridium SATCOM System
165E5733-00 L-3 Aviation Recorders Proprietary
Issue, Rev. 02
21 January 2014
Page 34
3.9 ARINC 429 Receiver Activity Status
Defines the criteria the Airbus Iridium SATCOM System uses for determining whether a receiver port
is active. A bus is generally declared active when 4 consecutive words at the specified rate are
received, and declared inactive when 4 consecutive samples fail.
Table 3-7 – ARINC 429 Receiver Port Monitoring
Receiver Activity Label Min. Update Rate
ATSU / FWC 270 1 Hz
ARINC 739A MCDU 270 / 377 1 Hz
Airbus CFDS 125 / 260 1 Hz
3.10 ARINC 429 Transmitter Protocols
Table 3-8 – ARINC 429 Transmitter Protocols SDU – ATSU/FWC
3.10.1 From SDU to ATSU / FWC
Destination:
ATSU / FWC
Speed:
High (Configurable)
Label Parameter Format Transmit
Rate
Update Rate
172 SDU Identifier BCD 1 s –
270 SDU Status Word and Monitoring Boolean
word
1 s -
304 ATSU SAL HYB
ARINC 618
Block Uplink
BOP (GFI=Eh) ISO 5 N/A -
ARINC 618
Block
Downlink
BOP (GFI=Eh) ISO 5 N/A -