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Only one option can be activated at a time.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
EFIS CONTROLS
A330/A340 FLEET DSC-31-50 P 6/8
FCOM 19 AUG 10
EFIS DMC PANEL
Applicable to: ALL
(1) OFF/BRT knobs
• These knobs turn the PFD and ND display units on and off, and control their brightness.
• The display brightness automatically adjusts for changing light conditions. It may also be
adjusted manually.
PFD Brightness Control Knob
Rotating this knob all the way counterclockwise switches off the PFD. In this case, the PFD
image is automatically displayed on the NDU, but the pilot may recover the ND by means of the
PFD-ND XFR pushbutton.
ND Brightness Control Knob
The outer knob controls only the brightness of both the weather radar image and the EGPWS
terrain display.
The inner knob controls the general brightness of the ND symbols.
Rotating this knob all the way counterclockwise switches off the NDU.
(2) PFD/ND Pushbutton
Pushing this button interchanges the PFD and the ND.
If the PFDU fails, the PFD transfers automatically to the NDU.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
EFIS CONTROLS
A330/A340 FLEET DSC-31-50 P 7/8
FCOM 19 AUG 10
(3) EFIS DMC sel
NORM: The DMC 1 supplies CAPT EFIS DUs and DMC 2 supplies F/O EFIS DUs.
3 : The onside DMC is replaced by DMC3.
2 or 1 : The onside DMC is replaced by DMC 2 or 1.
Some switching configurations generate FMA message. Refer to STLO-22_30_R-100
GENERAL for details.
CHRONOMETER (GLARESHIELD)
Applicable to: ALL
(1) CHRONO Pushbutton
Pushing this button displays chronometer time on the onside ND.
Pushing it again freezes the displayed value.
Pushing it a third time resets the chronometer, and the chronometer time disappears from the
display.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
EFIS CONTROLS
Intentionally left blank
A330/A340 FLEET DSC-31-50 P 8/8
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
CLOCK - GENERAL
A330/A340 FLEET DSC-31-55-10 P 1/2
FCOM 19 AUG 10
GENERAL
Applicable to:
A fully independent clock is on the right side of the control panel.
It sends time to the Central Maintenance Computer, the Flight Data Interface Unit, and the Flight
Management and Guidance Computer.
The clock has two electrical supplies, one of which is a direct connection to the aircraft's battery hot
bus.
The clock also has an internal battery that allows it to memorize time (for up to 50 h) if the aircraft
battery is removed.
The clock performs four functions :
It displays “UTC” (GMT) time in hours ‐ and minutes on the center counter.
‐ It displays elapsed time (ET) (from engine startup) in hours, and minutes, on the lower counter.
‐ It drives the chronometer (CHR), which measures a time interval (from the pushing of the
CHRONO button) in minutes and seconds.
‐ It can replace the UTC with the date.
GENERAL
Applicable to: ,
A fully independent clock is on the right side of the control panel.
It sends time to the Central Maintenance Computer, the Flight Data Interface Unit, and the Flight
Management and Guidance Computer.
The clock has two electrical supplies, one of which is a direct connection to the aircraft's battery hot
bus.
The clock performs four functions :
‐ It displays “UTC” (GMT) time in hours, minutes, and seconds, on the center counter.
‐ It displays elapsed time (ET) (from engine startup) in hours, and minutes on the lower counter.
‐ It drives the chronometer (CHR), which measures a time interval (from the pushing of the
CHRONO button) in minutes and seconds.
‐ It can replace the UTC with the date.
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
CLOCK - GENERAL
Intentionally left blank
A330/A340 FLEET DSC-31-55-10 P 2/2
FCOM 19 AUG 10
A330/A340 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING/RECORDING
CLOCK - CONTROLS AND INDICATORS
A330/A340 FLEET DSC-31-55-20 P 1/4
FCOM 19 AUG 10
GENERAL
Applicable to:
(1) UTC (GMT) counter
This counter displays the present time in 24 h format.
A trend indicator, which divides a minute into four 15 s periods, uses three horizontal marks :
From 0 to
14 s
: No marks appear.
From 15 to
29 s
: The highest mark appears.
From 30 to
44 s
　
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