-
white diamond for Proximate traffic
-yellow circle for TA traffic
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-red square for RA traffic (Ref. Fig. 032C)
NOTE : Presentation of the TCAS test on the NDs does not agree with
____ ARINC 735 specification.
(2)
PFD image At the beginning of the test sequence, green and red sectors must appear sequentially on the vertical speed scale of the PFD. Then a resolution advisory display is shown (Ref. Fig. 032C)
(3)
Fault indication At the end of the test sequence, the system generates a synthesized voice message:
TCAS TEST PASS if the system operates correctly or: TCAS TEST FAIL
if an anomaly has been detected. In this case the NDs, the PFDs and the ECAM show the fault messages described in Para. 6.G.(5), (6) and (7). There are several fail lamps on the face of the TCAS computer to identify the failed component according to the table below:
--------------------------------------------------| LIGHTS | ASSOCIATED FAULTS | |-------------|----------------------------------|
| TCAS | No fault detected |
| TCAS FAIL | Any detected faults |
| TOP ANT | Top antenna |
| BOT ANT | Bottom antenna |
| XPDR BUS | Update rate, data format, |
| | signal range |
| RA DISP | Resolution advisory display |
| TA DISP | Traffic advisory display |
| HEADING | Not applicable |
| RA LOG | Not applicable |
| ATTITUDE | Not applicable |
--------------------------------------------------
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R TCAS - Test Display
R Figure 032C
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1 1
1CES 1
**ON A/C ALL
B. CFDS
(1) Introduction The CFDS permits to present the TCAS computer faults on the Multipurpose Control and Display Units (MCDU) and on the printer. The TCAS computer which is classified Type 1 system in the CFDS also delivers data related to fault diagnoses required for its maintenance. It communicates with the CFDS through two ARINC 429 low speed buses. The CFDS is characterized by two operating modes:
-MENU mode
-NORMAL mode.
R **ON A/C 001-049, 101-105, 151-199,
(2) Menu Mode
(a)
SYSTEM REPORT/TEST function This function enables access to all the electronic systems and to the TCAS computer. The display of the SYSTEM REPORT/TEST page for the NAV components on which the TCAS is accessible is shown on the following figure. When the line key adjacent to the TCAS indication is pressed, the CFDIU establishes the dialog and provides access to one of the seven following items:
-LAST LEG REPORT
-PREVIOUS LEGS REPORT
-LRU IDENTIFICATION
-GROUND SCANNING
-CLASS 3 FAULTS
-GROUND REPORT
-TEST.
The procedure used to get the page for selection of an item is
shown in the figure
(Ref. Fig. 033)
(b)
LAST LEG REPORT This report contains the computer internal and external faults recorded during the last flight. The following tables give the lists of the fault messages which can be reported and indicate the fault class assigned to them as defined by the CFDS standard.
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TCAS - Maintenance Test Procedure
Figure 033
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(2) Menu Mode
(a)
SYSTEM REPORT/TEST function This function enables access to all the electronic systems and to the TCAS computer. The display of the SYSTEM REPORT/TEST page for the NAV components on which the TCAS is accessible is shown on the following figure. When the line key adjacent to the TCAS indication is pressed, the CFDIU establishes the dialog and provides access to one of the eight following items:
-LAST LEG REPORT 中國航空網 www.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：A320飛機維護手冊 AMM NAVIGATION 導航3(129)
