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(7) ET (elapsed time) selector
“RUN” position : starts the ET counter.
“HLD” position : stops the counter, keeps the display at its last indication.
“RESET”
position
: resets counter to zero (transient position).
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING / RECORDING SYSTEMS
CLOCK - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-31-55-20 P 3/6
FCOM 19 AUG 10
GENERAL
Applicable to:
,
,
MSN,,,,
(1) UTC (GMT) counter
This counter displays the present time in 24 h format from 0 to 23 h 59 min 59 s.
(2) Elapsed Time (ET)
This counter registers the elapsed time up to 99 h and 59 min.
(3) Chrono (CHR) counter
This Counter registers elapsed time from 0 to 99 min 59 s. It is controlled by the CHR
pushbutton.
(4) CHR pushbutton
First push : starts the CHR counter
Second push : stops the CHR counter, keeps the display at its last indication.
(5) Reset (RST) pushbutton
When pressed, the CHR counter restarts from 0 if the chrono is running.
(6) ET selector
“RUN” : the ET counter starts
“STP” : the ET counter stops counting
spring loaded “RST” : the ET counter is blanked. The selector returns to its STP position
when the selector is released.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING / RECORDING SYSTEMS
CLOCK - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-31-55-20 P 4/6
FCOM 19 AUG 10
Note: A cumulative elapsed time can be realized by alternatively setting this switch in “RUN”
and “STP” position.
(7) DATE/SET pushbutton
First push : sets the clock to date mode. The UTC time display is replaced by the date
(day month year).
Second push : sets the clock to time mode. The date display disappears.
Note: in order to select the date mode, the UTC selector must be set on “GPS” or “INT”
position.
(8) UTC selector
“GPS” : Time (or date, if selected) is displayed, and this data is synchronized on GPS
information.
Note: ‐ If the signal between the GPS and the clock is not detected, dashes are displayed.
Only the “INT” and “SET” positions are then available.
‐ If the signal is detected, but GPS data is invalid, the clock automatically runs on its
internal time.
‐ The clock will automatically resynchronize on the GPS information, as soon as the
GPS data becomes available.
“INT” : Internal time (or date, if selected) is displayed.
Note: ‐ The clock’s internal time is always synchronized with the latest valid GPS
information.
‐ If there is no valid GPS information at power up, the internal time will be 00:00:00,
until the clock is initialized, or until valid GPS information is present.
“SET” : Allows the internal time and date to be initialized.
INTERNAL TIME AND DATE INITIALIZATION
Applicable to:
,
,
MSN,,,,
Set the UTC selector on “SET”. The minute digits flash, and the seconds’ digits are blank.
To increase data, turn the DATE/SET button clockwise.
To decrease data, turn the DATE/SET button counterclockwise.
First, push ‐ on DATE/SET : To set the hour.
‐ Second, push on DATE/SET : To set the year.
A318/A319/A320/A321 FLIGHT CREW
OPERATING MANUAL
AIRCRAFT SYSTEMS
INDICATING / RECORDING SYSTEMS
CLOCK - CONTROLS AND INDICATORS
A318/A319/A320/A321 FLEET DSC-31-55-20 P 5/6
FCOM 19 AUG 10
‐ Third, push on DATE/SET : To set the month.
‐ Fourth, push on DATE/SET : To set the day.
Switch the UTC selector to the “INT” position, and the clock starts with the seconds’ digits at 00.
Note: This process must be completed in less than one minute. Otherwise, it will be necessary to
reset the CFDS in order to synchronize the lower ECAM time display with the cockpit clock
display. Resetting the CFDS is a maintenance operation.
UPDATING OF DAY, MONTH, YEAR
Applicable to:
Press the DATE pushbutton to set the date mode. The day, month and year appear.
‐ To advance the day, turn and maintain the UTC selector at the MSD position until the proper day
appears.
‐ For month and year proceed in the same way, using MSM to advance month or HLDY to advance
years.
Note: To return to normal functioning, switch the UTC selector to RUN position.
UPDATING OF HOUR AND MINUTE
Applicable to:
Use the same procedure in time mode for changing hour and minute. To advance the minute turn the
UTC selector to MSM and to HSD for the hour.
　
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