User Manual
AFIRS 228S Iridium Global Communications System Installation Manual
16 July 2014 L-3 Aviation Recorders Proprietary Page 25
165E5733-00 Rev. 03
3.5.4 ARINC 429 Digital Serial Bus Input
Quantity 16
Format DITS, ARINC 429 Low or high speed
Low Speed Data Rate 12.5 Kbps ± 1%
High Speed Data Rate 100 Kbps ± 1%
SSM/SDI/Data Definition Software Selectable Protocols
3.5.5 ARINC 429 Digital Serial Bus Output
Quantity 6
Format DITS, ARINC 429 Low or high speed
Low Speed Data Rate 12.5 Kbps ± 1%
High Speed Data Rate 100 Kbps ± 1%
SSM/SDI/Data Definition Software Selectable Protocols
3.5.6 Rear Ethernet Ports
Quantity 4
Format 802.3 10BASE-T/100BASE-TX, half- and full-duplex modes
(auto-negotiated)
ARINC 664P2 Physical Layer
3.5.7 Discrete Inputs
Quantity 16 Configurable
Input Impedance >10 k
Ω
Fault Current <15 mA
DIN+ Voltage Range Logic High: 7.0 – 36.0 VDC
Logic Low: 0 – 3.5 VDC
Pulse Width (Min) 100 ms