Casio 2456 User Manual

USER'S GUIDE 2456
General Guide
• Press C to change from mode to mode. After you perform an operation in
any mode, pressing C returns to the Timekeeping Mode.
• In any mode, press L to illuminate the display for about two seconds.
Timekeeping Mode
Press C.
Timekeeping
Use the Timekeeping Mode to set and view the current time and date. You can
also display the Last Signal and World Time screens.
Last Signal Timekeeping
Receive indicator
Receive date
Day of week
Press D.
Hour : Minutes
Receive time
PM indicator Seconds
• The Last Signal screen shows the time and date of the last successful time
calibration signal reception.
• The World Time screen shows the data you were viewing when you last
exited the World Time Mode.
Current Time Setting
Normally, you do not need to do anything to set the current time as long as you
are within an area in West Europe where the watch can pick up the time
calibration signal. You can also set the current time manually when you are
outside the range of the signal.
• Before using the watch after purchasing it, use the procedure under
"Selecting Your Home City Code" (page E-11) to specify your home city, and
then use the procedure under "To perform manual time calibration signal
reception."
• Note that after you set your Home City code, you must also turn on the
watch's time calibration signal receiver if you want to enable auto time
calibration. See "About Auto Receive" (page E-16) for more information.
• See "Setting the Time and Date Manually" for information about manual
settings.
Setting the Time and Date Manually
The times displayed in the Timekeeping Mode and World Time Mode are
linked. Even if you plan to use the watch without enabling auto time calibration,
be sure to select a Home City code (the city code whose time and date you are
setting), before you set the time and date.
To set the current time and date manually
1. In the Timekeeping Mode, hold down A until the
12-hour format indicator
current Auto Receive On/Off setting starts to flash,
City code
which indicates the setting screen.
2. Press C to move the flashing in the sequence
shown below to select other settings.
Auto 12/24-Hour
DST
Receive Format
Day Month Year
3. When the setting you want to change is flashing, use B and/or D to
change it as described below.
Setting Button Operations
Press D to toggle auto receive on and off.
Auto Receive
Press D to toggle between Daylight Saving TIme (ON)
DST
and standard time (OFF).
Press D to toggle between 12-hour (12H) and 24-hour
12/24-Hour format
(24H) timekeeping.
Use D (+) and B (–) to change the setting.
City Code
Setting Button Operations
Press D to reset to 00.
Seconds
Use D (+) and B (–) to change the setting.
Hour, Minutes,
Year, Month, Day
• Auto Receive setting is used for time calibration signal reception only. See
"About Auto Receive" for details.
• See "City Code Table" at the back of this manual for a complete list of
available codes.
• Daylight Saving Time (DST) advances the time setting by one hour from
Standard Time. Remember that no all countries or even local areas use
Daylight Saving Time.
4. Press A to exit the setting screen.
Alarm Mode
World Time
Timekeeping Mode time
Month – Day
City code
Hold down B.
Release
Current time in the
selected city code
City Code Seconds
Minutes Hour
Day Counter
Mode
Stopwatch Mode
Selecting Your Home City Code
You can select a city code for your Home City (the city where you normally use
the watch). This data can be changed any time you move to another
geographic area.
• See "City Code Table" at the back of this manual for a complete list of
available codes.
To select your Home City code
City code
1. In the Timekeeping Mode, hold down A until the
current Auto Receive On/Off setting starts to flash,
which indicates the setting screen.
2. Press C three times to move the flashing to the
City Code setting.
3. Use D (+) and B (–) to change it.
4. Press A to exit the setting screen.
Time Calibration Signal Reception
This watch is designed to pick up a time calibration signal transmitted from
Mainflingen, Germany and update its time setting in accordance with the
signal. There are two different methods you can use to receive the signal: Auto
Receive and Manual Receive. With Auto Receive, the watch automatically
receives the calibration signal three times each day and makes appropriate
adjustments. With Manual Receive, you perform a specific button operation to
receive the calibration signal.
Note
• If you are using the time calibration signal to set the time for this watch, be
sure to correctly set your home city. Otherwise, there is the chance that the
watch will not set the correct time. See the "To select your Home City code"
for details.
• This watch automatically switches between DST and standard time while
BER is selected as the home city code. For any other home city code, you
must perform the procedure under "To set the current time and date
manually" to switch between DST and standard time.
• Time calibration reception is limited to specific geographic areas in West
Europe.
• The current time setting in accordance with the time calibration signal takes
priority over any time settings you make.
• The watch is designed to automatically update the date and day of the week
for the period January 1, 2000 to December 31, 2039. Setting of the date by
the time calibration signal cannot be performed starting from January 1,
2040.
• This watch can receive signals that differentiate between leap years and non-
leap years.
• Auto Receive is turned on when the watch is shipped from the factory.
• See the information under "Time Calibration Signal Reception Precautions"
(page
E-42) if you experience problems with time calibration signal reception.
To perform manual time calibration signal reception
1. Place the watch on a stable surface to its top (12
o'clock side) is facing in the general direction of
Frankfurt, Germany.
• This puts the watch in the optimum position for
time calibration signal reception.
2. In the Timekeeping Mode, hold down D for about
two seconds, until the watch beeps.
• At this time, the
display should scroll from left to right, which
indicates that signal reception has started.
Current time
• Time calibration signal reception takes from four
Receive indicator to 11 minutes. Take care that you do not move
the watch during this time.
• After signal reception is complete, the display of
the watch changes to the Last Signal screen,
which shows the new signal receive date and
time.
World Time Mode
Telememo Mode
indicator on the watch's
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