------------------------------------------| TYPE 2 | TYPE 3 | |--------------------|-------------------| | AEVC | GCU Emergency | | GPCU | TR 1, 2, 3 | | BCL 1, 2 | ICE DET 1 + 2 | | FDU 1, 2, APU | DLRB/DLS * | | WHC 1, 2 | | | PHC 1, 2, 3 | | |____________________|___________________|
 * : option(s)
 **ON A/C ALL
 The list of input/output labels is given in the figure below.
 **ON A/C 001-049, 051-099, 101-105, 151-154, 201-207,
 (Ref. Fig. 021)

R **ON A/C 106-149, 155-199, 208-299, 301-399, 401-499,
 (Ref. Fig. 021A)
 **ON A/C 001-049, 051-099, 101-102,
 (1) Inputs The CFDIU receives fault information from approx. 130 aircraft systems (basic + optional), directly (Type 1, 2 or 3 systems) or indirectly (System BITEs). The CFDIU inputs (for maintenance) consist of :
 -ARINC 429 buses from Type 1, 2 systems, SYSTEM BITEs and peripherals
 -discretes from Type 3 systems, pin programming and flight/ground condition.
 NOTE : These inputs receive fault messages except: CLOCK and MCDUs.
____ The DMU and ACARS inputs receive fault messages and they also receive other data.
 1EFF : ALL 1 31-32-00Page A6 1 1 Aug 01/05 1 1 1CES 1

 CFDIU - Input/Output Labels List
 Figure 021

R 1EFF : 001-049, 051-099, 101-105, 151-154, 1 31-32-00Page A7 1201-207, 1May 01/05 1 1 1CES 1

 CFDIU - Input/Output Labels List
 Figure 021A

R 1EFF : 106-149, 155-199, 208-299, 301-399, 1 31-32-00Page A8 1401-499, 1Aug 01/05 1 1 1CES 1 The MCDUs, PRINTER and ACARS inputs also receive the data constituting the protocol with the CFDIU.

 (2) Outputs
 At output, the CFDIU has:

 -ARINC 429 buses to Type 1 systems and systems BITEs
 -discretes to type 2 and 3 systems.
 **ON A/C 103-105,
 (1) Inputs The CFDIU receives fault information from approx. 130 aircraft systems (basic + optional), directly (Type 1, 2 or 3 systems) or indirectly (System BITEs). The CFDIU inputs (for maintenance) consist of :
 -ARINC 429 buses from Type 1, 2 systems, SYSTEM BITEs and peripherals
 -discretes from Type 3 systems, pin programming and flight/ground condition.
 NOTE : These inputs receive fault messages except: CLOCK and MCDUs.
____ The ACARS input receives fault messages and it also receives other data. The MCDUs, PRINTER and ACARS inputs also receive the data constituting the protocol with the CFDIU.
 (2) Outputs
 At output, the CFDIU has:

 -ARINC 429 buses to Type 1 systems and systems BITEs
 -discretes to type 2 and 3 systems.

R **ON A/C 106-149, 151-199, 201-299, 301-399, 401-499,
 (1) Inputs The CFDIU receives fault information from approx. 130 aircraft systems (basic + optional), directly (Type 1, 2 or 3 systems) or indirectly (System BITEs). The CFDIU inputs (for maintenance) consist of :
 -ARINC 429 buses from Type 1, 2 systems, SYSTEM BITEs and peripherals
 -discretes from Type 3 systems, pin programming and flight/ground condition.
 NOTE : These inputs receive fault messages except: CLOCK and MCDUs.
____
 1EFF : ALL 1 31-32-00Page A9 1 1 Aug 01/05 1 1 1CES 1

 The DMU input receives fault messages and it also receives
 other data.
 The MCDUs and PRINTER inputs also receive the data
 constituting the protocol with the CFDIU.

 (2) Outputs
 At output, the CFDIU has:

 -ARINC 429 buses to Type 1 systems and systems BITEs
 -discretes to type 2 and 3 systems.
 **ON A/C ALL
 (3) Discrete input/output characteristics The CFDIU has the capacity for 24 discrete inputs and 24 discrete outputs, of the GROUND/OPEN CIRCUIT type. When open, each input/output has a maximum leakage current of 10 micro.A.
 (a) Ground/open circuit type input
 -Low-pass filter with 1.6 ms time constant.
 -For a ground signal at input, the typical current is approximately 0.5 mA.
 (b) Ground/open circuit type output
 -Leakage current in open state : less than 10 micro.A up to 150 degrees.
 -In closed state (= ground), the current capacity is between 6
 and 30 mA. These discretes are closed (connected to ground) at each TEST (or RESET) request for the corresponding Type 2 or 3 systems, when the request is made from the MCDU.
 B. Interface with the MCDUs The MCDUs allow a dialog with the CFDIU or with the BITEs of the various systems connected to the CFDIU, depending on the flight/ground conditions.

R **ON A/C 001-049, 051-099, 101-105, 151-154, 201-207,
 C. Interface with the Systems which Provide General Parameters (clock, FWC, FDIU and FAC1 and DMC1). Dating and Fault Identification. The CFDIU is connected to several aircraft systems which provide general parameters enabling identification of faults.
　
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