Table 4 - FDIMU (FDIU-Part) Summary of Bus Outputs
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210,
+------------------------------------------------------------------+ | FDIU DIGITAL GROUND, CASE GROUND AND POWER SUPPLY | |------------------------------------------------------------------| | Connector | PIN | EXPLANATION | |-----------|-----|------------------------------------------------| | TP | 15J | DIGITAL GROUND | | TP | 15K | CASE GROUND | | MP | 15J | DIGITAL GROUND | | MP | 15K | CASE GROUND | | BP | 1 | 115 V AC | | BP | 7 | 115 V AC GROUND | +------------------------------------------------------------------+
Table 5 - FDIU Power Supply and Digital Ground
-----------------------------------------------------------------------------
| Pin | Assignment |
|---------|-------------------------------------------------------------------|
| 1 | RS232 Data IN |
| 2 | RS232 Data OUT |
| 3 | RS232 RTS |
| 4 | RS232 CTS |
| 5 | Digital Ground (*) |
| 6 | RS232 DTR (reserved) |
| 7 | RS232 DSR (reserved) |
| 8 | FDIU Load Control (*) |
| 9 | + 5 V DC - Power Supply |
| 10 | + 5 V DC - Power Supply (RAM) |
R 1EFF : ALL 1 31-33-00Page 44 1 1 May 01/05 1 1 1CES 1
-----------------------------------------------------------------------------| Pin | Assignment | |---------|-------------------------------------------------------------------| | 11 | + 15 V DC - Power Supply | | 12 | Spare | | 13 | 115 V AC (H) | | 14 | Portable CDU ARINC Input (A) | | 15 | Portable CDU ARINC Input (B) | | 16 | FDIU ARINC 429 Output (A) | | 17 | FDIU ARINC 429 Output (B) | | 18 | DFDR Harvard Bi-Phase Output (A) | | 19 | DFDR Harvard Bi-Phase Output (B) | | 20 | DFDR Harvard Bi-Phase Playback (A) | | 21 | DFDR Harvard Bi-Phase Playback (B) | | 22 | Spare | | 23 | - 15 V DC - Power Supply | | 24 | Case Ground | | 25 | 115 V AC (L) | -----------------------------------------------------------------------------
Test Connector Pin Assignment - Table 6
**ON A/C ALL
6. Component Description
_____________________
R **ON A/C 001-049, 051-099, 101-105, 151-199, 201-210,
(Ref. Fig. 008, 009, 010)
R A. Flight Data Interface Unit (FDIU)
The FDIU is a microprocessor controlled unit with modules for the collection of discrete and digital parameters and for their conversion to a recordable form. The function and the electrical interface complies with ARINC 717. If more than one data bus with the same content, e.g. SDAC 1 and SDAC 2, is connected to the FDIU, the data from system 1 is recorded on the DFDR. This is as long as the appropriate SSM bits are valid and the data is updated. Invalid data from system 1 is replaced with the appropriate data from system 2. If one system has bad SSM bits or unrefreshed data, data from the other system are recorded. If no valid data is available for the DFDR recording, then related data bits are set to zero and in the next mainframe period the respective data bits are set to one.
R 1EFF : ALL 1 31-33-00Page 45 1 1 May 01/05 1 1 1CES 1
Flight Data Interface Unit
Figure 008
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 31-33-00Page 46 1201-210, 1May 01/05 1 1 1CES 1
Flight Data Interface and Management Unit
Figure 008A
R 1EFF : 106-149, 211-299, 301-399, 401-499, 1 31-33-00Page 47 1 1 Aug 01/05 1 1 1CES 1
Functional Block Diagram
Figure 009
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 31-33-00Page 48 1201-210, 1May 01/05 1 1 1CES 1
Functional Block Diagram
Figure 009A
R 1EFF : 106-149, 211-299, 301-399, 401-499, 1 31-33-00Page 49 1 1 Aug 01/05 1 1 1CES 1
System Internal Interface
Figure 010
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 31-33-00Page 50 1201-210, 1May 01/05 1 1 1CES 1 It is possible to record two different versions of parameters on the DFDR. The selection for one version is made by the Pin-Programming. If it is not coded, the FDIU uses the code from the last flight. In case of missing information from the last flight, the FDIU works with Version 1. The two record versions fulfil the different authority's requirements: 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：A320飞机维护手册 AMM 指示/记录系统 2(60)
