R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-51-00Page A12 1201-220, 1May 01/05 1 1 1CES 1

 -pin programming, which is a constant data stored in the EPROM memory.
 E. Operation
 (1)
 Normal mode The normal mode of operation consists in monitoring cyclically the status of the AMU cards and the status of the associated ACP, transmitting data to the CFDIU and, if any failure is detected, storing it in the fault memory.

 (2)
 Menu mode The menu mode of operation is only activated on the ground and it consists in a dialogue between the AMU and the operator through one of the three MCDUs. Flight/ground data is given by the CFDIU and when there is no data from a ground circuit (flight/ground discrete), it is given by the LGCIU. For the Audio Integrating System (AIS), the menu mode consists of the following: (Ref. Fig. 039)

 -
a LAST LEG REPORT
 (Ref. Fig. 040A)

 -
a PREVIOUS LEGS REPORT
 (Ref. Fig. 041A)

 -
a LRU IDENTIFICATION
 (Ref. Fig. 042A)

 -
a TROUBLE SHOOTING DATA
 (Ref. Fig. 044)

 -
a GROUND REPORT
 (Ref. Fig. 045)

 -
a TEST
 (Ref. Fig. 043A)

R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-220,
 (3) Other functions The AMU BITE circuit ensures two additional functions
 -
It transmits the status of the pin-program

 -
It transmits an identification message.

 (a) Transmission of PIN-PROGRAM*
 -The BITE circuit generates a message giving the installation status of certain equipment (VHF3 - HF1 - HF2 - ADF2 - MLS). This message is generated from the information sent by the SELCAL card which receives the pin-program. It is sent to the CFDIU.
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 Audio Integrating System (AIS) - TEST
 Figure 043A

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 Audio Integrating System (AIS) - TROUBLE SHOOTING DATA
 Figure 044

R 1EFF : 106-149, 221-299, 301-399, 401-499, 1 23-51-00Page A15 1 1 Aug 01/05 1 1 1CES 1

 Audio Integrating System (AIS) - GROUND REPORT
 Figure 045

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 -The CFDIU system requires this information in order to transmit this information to the relevant circuits such as the RMPs (Radio Management Panels) and the SDAC (System Data Acquisition Concentrator).
 -This information is transmitted in 32-bit word form in compliance with ARINC 429 with label 350. Word structure is as follows:
 b32 b31 b30 b23 b16 b15 b14 b13 b12 b11 b10 b9 b8 b1 -------------------------------------------------------------------------------| | |M |A |H |H |V | | | | P | 0 0 |0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0| L | D | F | F | H | 0 | 0|LABEL| | | | S| F | 2| 1| F | | | 350 | | | | | 2| | | 3| | | | -------------------------------------------------------------------------------
-
Bit at logic 0: the equipment is not installed

 -
Bit at logic 1: the equipment is installed

 (b) Transmission of identification message Every component connected to the maintenance centralized system transmits an identification message to facilitate and shorten the test procedures. The identification code assigned to the AMU is 6A. This information is transmitted in 32-bit word form in compliance with ARINC 429 with label 377. Word structure is as follows:
 b31 b30 b29 b19 b18 b15 b14 b11 b10 b9 b8 b1 -------------------------------------------------------------------------------| | | | | | | | | | P | 0 0 | 0 0 0 0 0 0 0 0 0 0 0 | 6 | A | 0 | 1 | LABEL 377 | | | | | | | | | | -------------------------------------------------------------------------------

R **ON A/C 106-149, 221-299, 301-399, 401-499,
 (3) Other functions The AMU BITE circuit ensures two additional functions
 -
It transmits the status of the pin-program

 -
It transmits an identification message.

 (a) Transmission of PIN-PROGRAM*
 -The BITE circuit generates a message giving the installation status of certain equipment (VHF3 - HF1 - HF2 - ADF2 - MLS). It is sent to the CFDIU.
 1EFF : ALL 1 23-51-00Page A17 1 1 Aug 01/05 1 1 1CES 1

 -The CFDIU system requires this information in order to transmit this information to the relevant circuits such as the RMPs (Radio Management Panels) and the SDAC (System Data Acquisition Concentrator).
 -This information is transmitted in 32-bit word form in compliance with ARINC 429 with label 350. Word structure is as follows:
　
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