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 ECAM / EFIS Acquisition R Figure 016
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 C. ECAM/EFIS Data definition
 (1) Color definition
 _______________________________________________________________ | | | | COLOR | INTERPRETATION | |_________|___________________________________________________| | RED | Configuration or failure requiring immediate | | | action - warning texts or flags. | |---------|---------------------------------------------------| | AMBER | Configuration or failure requiring immediate | | | attention but not immediate action. | |---------|---------------------------------------------------| | GREEN | Normal and long-term operation | | | No action to be performed | |---------|---------------------------------------------------| | WHITE | Indication of controlled function and action | | | carried out but not corresponding to normal | | | operation (e.g., setting the control of a | | | system to the OFF position) | |---------|---------------------------------------------------| | CYAN | Action to be carried out (e.g., procedure or | | | reference value to be selected) |
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 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, which 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)
 (a) PFD control
 1_ BARO correction display window and hPa/inches of Hg selector
 This window displays the reference value selected for baro
 correction, either in hPa (hectoPascal, 1 hPa = 1mbar) or in
 inches of mercury, according to the position of the baro
 reference units selector (outer ring concentric to the baro
 reference selector knob).
 When the FCU starts operating, at electrical power on setting,
 the display shows 1013 or 29.92, according to the chosen unit.
 Selection ranges:
 745 to 1050 hPa
 21.99 to 31.00 inches of Hg.
 2_ BARO reference selector knob
 The baro reference selector knob can be rotated and also it
 can be pushed or pulled:
 - by rotating it, each pilot can select the desired baro
 correction reference value.
 The CAPT and the F/O selections are independent. 

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 - push or pull actions:
 The knob has 3 possible positions: neutral (stable), and
 pulled or pushed, which are both unstable and spring-loaded
 to neutral.
 At FCU initialization, the display shows 1013 or 29.92
 (according to the choice of the units, hPa or inches of Hg),
 and BARO written in small letters.
 Rotating the knob will select the desired QNH baro reference
 setting. On the PFD, below the altitude scale, the baro
 reference value and the QNH announcement are displayed.
 When pulling the knob, the standard baro reference setting
 (1013 hPa or 29.92 inches of Hg) is selected. This is
 indicated by STD in block letters in the BARO correction
 display window and by STD below the altitude scale on the
 PFD. The baro reference value is not displayed, and rotating
 the knob has no effect.
 When pushing the knob from the STD situation, the QNH baro
 setting is available again.
 - QFE Option
 Each pilot will have the possibility of switching from QNH
 to QFE the baro reference setting of his altitude scale:
 when QNH is selected, pressing the knob will select QFE,
 pressing it again will select back QNH, ETC...
 On the FCU EFIS control section, the display shows BARO and
 the selected BARO reference value.
 On the PFD, QFE or QNH is written below the altitude scale,
　
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