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FCU - AFS & EFIS Control
Figure 011
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EFIS Control Section Figure 012
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ECAM CP - EIS DMC SWITCHING Panel
Figure 013
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PFD/ND Brightness - ON/OFF Control PFD/ND Transfer
Figure 014
1EFF : 106-149, 303-399, 1 31-60-00Page 25 1 1 Config-3 Aug 01/05 1 1 1CES 1 Situated on the left of the CAPT PFD and on the right of the F/O PFD for the EFIS DUs and on the ECAM CP for the ECAM DUs, they provide brightness control (stroke and raster) of the DUs, in conjunction with the automatic brightness control, and also the ON/OFF control. An additional brightness control knob is provided for the NDs only: it provides separate brightness control for the WXR image.
B. System Architecture and Interface The system architecture has been designed in a way as to ensure an actual segregation between:
-EFIS
-engine indicating system
-and ECAM information, although each DMC receives all three kinds of
information. The EIS components receive from the aircraft systems all the information necessary for the elaboration of the various EFIS and ECAM displays. For the DMC, note that all the signals from the various sensors are sent in parallel to the concerned EIS equipment of side 1 and 2 (and possibly 3 for the DMCs). In fact, all the signals that enter the DMCs are acquired redundantly. For example, the DMC 1 receives signals from A/C systems, computers and sensors of the side 1 and of the side 2, and identically for the DMC 2. (Ref. Fig. 015) This principle of redundancy provides numerous advantages:
-no operational degradation in case of loss of an EIS computer and simple reconfiguration.
-reliable presentation on CRTs of A/C system configuration and status, which allows simplification of the A/C system panels, and particularly the overhead panel
-simple procedures
-homogeneity in data acquisition and processing.
Each main instrument panel comprises two display units, one PFD and one
ND, on which the images that the DMCs elaborate from aircraft sensor data
are displayed.
Each DMC controls simultaneously the two display units (and also in
addition one ECAM display unit).
The pilots have at their disposal:
-control devices, for selection of various reference values and display modes on their PFD and ND
-selector switches for reconfiguration of displays or input sensors in case of failure.
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ECAM/EFIS Acquisition
Figure 015
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C. ECAM/EFIS Data definition
(1) Color definition
_______________________________________________________________ | | | | COLOR | INTERPRETATION | |_________|___________________________________________________| | RED | Configuration or failure that requires immediate | | | action - warning texts or flags. | |---------|---------------------------------------------------| | AMBER | Configuration or failure that requires immediate | | | attention but not immediate action. | |---------|---------------------------------------------------| | GREEN | Normal and long-term operation | | | No action to perform | |---------|---------------------------------------------------| | WHITE | Indication of controlled function and action | | | carried out but which does not correspond to | | | normal operation (e.g., setting of the control of | | | a system to the OFF position) | |---------|---------------------------------------------------| | CYAN | Action to carry out (e.g., procedure or reference | | | value to select) | ---------------------------------------------------------------
5. Eis Operation
_____________
A. EFIS Operation
(1) Description and use of FCU EFIS control sections The present paragraph describes the functions of the various control pushbutton switches and selectors of the FCU EFIS control sections. These pushbutton switches and selectors enable each pilot to select desired modes or references on his PFD and ND. Both the CAPT and F/O EFIS control sections are identical and give the same display possibilities on the CAPT and F/O PFD and ND. Each EFIS control section, like the center AFS control section, supports all the control and indication devices and can be removed separately from the FCU box. (Ref. Fig. 011) Each FCU EFIS control section includes a PFD control part and an ND control part. (Ref. Fig. 012)
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