-
the Centralized Fault Display Interface Unit (CFDIU) (through the MCDU) which is a centralized maintenance system (Ref. ATA 31-32)

 -
the Landing Gear Control Interface Unit (LGCIU) which indicates the aircraft status (flight or ground) (Ref. ATA 32-31)

 -
the System Data Acquisition Concentrator (SDAC) which collects
 transmission information from the HF system (Ref. ATA 31-54)

 -
the Air Data/Inertial Reference Units which provide the High Frequency Data Radio (HFDR) with the following information:

 -time
 -latitude
 -longitude.
 -the Air Traffic and Information Management System (ATIMS): the HFDR system is one subnetwork used by the ATIMS for datalink communications (Ref. ATA 46-21).
 **ON A/C ALL
 4. Power Supply
____________
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210, 301-399, 401-499,
 (Ref. Fig. 004)
 **ON A/C 106-149, 211-299,
 (Ref. Fig. 004A)
 1EFF : ALL 1 23-11-00Page 15 1 1 Aug 01/05 1 1 1CES 1

 HF System - Power Supply
 Figure 004

R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-11-00Page 16 1201-210, 301-399, 401-499, 1Aug 01/05 1 1 1CES 1

 HF System - Power Supply
 Figure 004A

R 1EFF : 106-149, 211-299, 1 23-11-00Page 17 1 1 May 01/05 1 1 1CES 1R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210, 301-399, 401-499,

 The HF1 system is supplied with three-phase 115VAC through 5A circuit
 breaker (1RE1) (panel 49VU) from sub-busbar 801XP.
 The HF2 system is supplied with three-phase 115VAC through 5A circuit
 breaker (1RE2) (panel 121VU) from sub-busbar 202XP.
 The HF1 transceiver (3RE1) provides the HF1 antenna coupler (4RE1) with
 28VDC and monophase 115VAC.
 The HF2 transceiver (3RE2) provides the HF2 antenna coupler (4RE2) with
 28VDC and monophase 115VAC.

 **ON A/C 106-149, 211-299,
 The HF1 system is supplied with three-phase 115VAC through 5A circuit breaker (1RE1) (panel 49VU) from sub-busbar 801XP. The HF1 transceiver (3RE1) provides the HF1 antenna coupler (4RE1) with 28VDC and monophase 115VAC.
 **ON A/C ALL
 5. Interface
_________
 **ON A/C 001-049, 101-105, 151-199,
 A. Output Interface
 (1) Digital Outputs The connections with the CFDIU is a type 1 system. This type of system has an ARINC 429 input from the CFDIU and an ARINC 429 output. This system is thus capable of a two-way communication with the CFDIU (Ref.31-32). The radio-communication equipment receives the frequency data through words from RMPs. These words have a structure and a refresh rate defined in ARINC 429 characteristics specification. On the output bus, each HF transceiver transmits labels 354, 356,
 377.
 This table contains all the output parameters in the digital form. They are sorted as per the numerical order of their output label. The following table gives:
 -EQ.SYS.LAB.SDI: (SDAC,FWC,DMC...) output label for which the parameter is available
 -PARAMETER DEFINITION: parameter name
 1EFF : ALL 1 23-11-00Page 18 1 1 Aug 01/05 1 1 1CES 1

 -WORD RANGE/OPER RANGE/RESOLUTION ACCURACY: measurement range. Maximum value transmitted. When the digital value changes, the change step is equal to the accuracy
 -UNIT: unit in which the digital value is transmitted
 -SIG BIT: indicates whether a sign bit is available
 -BITS: number of bits used by the parameter in the label
 -XMSN/INTV: output transmission interval. The refresh rate is given in milliseconds
 -CODE : BNR: binary data word BCD: binary coded decimal data word ISO: data word coded in ISO5 code DIS: discrete data word HEX: hexadecimal coded HYB: mixed code
 -ALPHA CODE: indicates the parameter mnemonic code
 -SOURCE ORIGIN: parameter source computer or system.
 -------------------------------------------------------------------------------| PARAMETER LIST PARAMETER CHARACTERISTICS (NUMERIC) | -------------------------------------------------------------------------------|EQ.SYS.LAB.SDI|PARAMETER | WORD RANGE |UNIT|SIG |BITS|XMSN|CODE|ALPHA|SOURCE | | |DEFINITION| OPER RANGE | |BIT | |INTV| |CODE |ORIGIN | | |(*=REMARK)| RESOLUTION | | | | | | |BUS No.| | |(X=NOTE) | ACCURACY | | | | | | |ATA REF| | | | | | | | | | |CONV | -------------------------------------------------------------------------------| 354 |LRU IDENT | | | | | 50 | ISO| | | | | | | | | | | | | | | 356 |BITE | | | | | | | | | | |STATUS | | | | | 50 | ISO| | | | | | | | | | | | | | | 377 |EQUIP | | | | | | | | | | |IDENT | | | | |1000| BCD| | | -------------------------------------------------------------------------------
　
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