Airbus Iridium SATCOM System165E5733-00 L-3 Aviation Recorders ProprietaryIssue, Rev. 0221 January 2014Page 32Sidetone: Provided by System to Interphone OutputSidetone Level: Software ConfigurableAudio Band Pass: 300 – 3400 Hz3.5.10 Iridium / GPS AntennaCoaxial Cable Insertion Loss (Max.): 3 dB @ 1626.5 MHz3.6 SDU Maintenance Connector (J2)The Airbus Iridium SATCOM System SDU provides an RJ-45 Maintenance Port connector on thefront panel which provides for Ethernet connection to Ground Service Equipment (GSE) e.g. a laptopor Personal Computer with a standard web browser.3.7 SDU Configuration Module (SCM)The SCM and antenna connect directly to the SDU. The SDU is the heart of the system and providesall of the interfaces to other aircraft systems.3.8 ARINC 429 Receiver ProtocolsTable 3-4 – ARINC 429 Receiver Protocols – ATSU/FWCSource: ATSU / FWC Speed: High(Configurable)Label Parameter Format Transmit Rate172 ATSU Identifier Word BCD 1 s214 ATSU ICAO Address Word 1 Booleanword200 ms216 ATSU ICAO Address Word 2 Booleanword200 ms270 ATSU Status Word and Monitoring Booleanword600 ms307 SDU SAL HYB377 ATSU Equipment Identifier BCD 1 sARINC618BlockUplinkBOP (GFI=Eh) ISO 5 N/AARINC618BlockDownlinkBOP (GFI=Eh) ISO 5 N/A
