-
all director interfaces are disabled,
-
all Random Access Memory (RAM) is cleared,
-
the system software flags are present,
-
the directors are initialized.
A failure in the initialized process in CIDS director 101RH
causes:
-
the CIDS CAUTION lamp on the FWD ATTND panel to come on,
-display of CIDS CAUTION message at the ECAM,
-
a deactivation of the CIDS director 101RH hardware,
-
a switchover of control to CIDS director 102RH,
-the CIDS director 101RH software execution halt.
Once the directors have been initialized, the data contained in
the CAM is copied into their zoning tables. In the absence of the
CAM, the directors own back up data is used. The directors now
hold the data necessary for the active unit to configure and
initialize the:
-cabin system functions,
-director interface modules,
-DEUs and connected equipment and components. For each PA amplifier in each DEU A, the gain, the frequency characteristic, and the channel-assignment is programmed.
-FWD ATTND panel,
-programming and test panel.
When this has been completed, the CIDS is fully operational.
(b) BITE Operation The built-in test equipment of the director detects at least 95 % of the failures that could occur in the director. These detected failures are isolated with a confidence level of better than 85 %. The director performs a self-test each time it is initially switched on or reset. The self-test checks for correct operation of the whole director and of its individual parts. The self-test is repeated periodically. The director periodically loads each CIDS data bus line with a DC current. When a current flow occurs the line is known to be serviceable. The equipment shown below have their own BITE functions, and signal their BITE status to the director:
-each DEU,
-
the programming and test panel,
-
the FWD ATTND panel,
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-00Page 47 1201-299, 1Config-1 Aug 01/05 1 1 1CES 1
CIDS Director - Connections
Figure 016 (SHEET 1)
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-00Page 48 1 1 Config-1 Aug 01/05 1 1 1CES 1
CIDS Director - Connections
Figure 016 (SHEET 2)
R 1EFF : 001-049, 051-099, 101-105, 151-199, 1 23-73-00Page 49 1 1 Config-1 Aug 01/05 1 1 1CES 1
CIDS Director - Connections
Figure 016A (SHEET 1)
R 1EFF : 201-299, 1 23-73-00Page 50 1 1 Config-1 Aug 01/05 1 1 1CES 1
CIDS Director - Connections
Figure 016A (SHEET 2)
R 1EFF : 201-299, 1 23-73-00Page 51 1 1 Config-1 Aug 01/05 1 1 1CES 1
CIDS Director - Connections
Figure 017
R 1EFF : 001-049, 101-105, 151-199, 1 23-73-00Page 52 1 1 Config-1 Aug 01/05 1 1 1CES 1
CIDS Director - Connections
Figure 017A
R 1EFF : 051-099, 1 23-73-00Page 53 1 1 Config-1 Aug 01/05 1 1 1CES 1
CIDS Director - Connections
Figure 017B
R 1EFF : 201-299, 1 23-73-00Page 54 1 1 Config-1 Aug 01/05 1 1 1CES 1
-
the connected equipment such as PES and PSS.
The DEUs are able to test the cabin equipment to which they are
connected.
All BITE results are stored in the director BITE-dedicated
memory. Failures are shown on:
-
the CIDS CAUTION light,
-
the ECAM status page,
-
the ECAM warning,
-
the respective Multifunction Control & Display Unit (MCDU) pages,
-
the programming and test panel.
Certain failures or combinations of failures cause immediate
indications at the Electronic Centralized Aircraft Monitoring
(ECAM) and the programming and test panel, as follows:
1_ 'CIDS INOP' on ECAM
The director output 'CIDS OPERATION STATUS' to the SDAC is at
active ground when the CIDS is operative. A change in this
state causes to display 'CIDS 1+2 FAULT' on upper ECAM and
'CIDS INOP ' on lower ECAM when:
- both directors fail,
- more than 50 % of all DEU A or 20 % of adjacent DEU A
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