Casio Casio Watch 2456 User's Manual

Casio Watches User's Manual - Casio Watch 2456.
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USER’S GUIDE 2456

1

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.

World Time Mode

Telememo Mode

Timekeeping Mode

Day Counter

Mode

Stopwatch Mode

Alarm 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

World Time

Receive date

Receive time

Receive indicator

Day of week

Hour : Minutes

PM indicator

Seconds

Month – Day

Press D.

Hold down B.

Release

Current time in the
selected city code

City code

Timekeeping Mode time

• 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

current Auto Receive On/Off setting starts to flash,
which indicates the setting screen.

2. Press C to move the flashing in the sequence

shown below to select other settings.

12-hour format indicator

City code

3. When the setting you want to change is flashing, use B and/or D to

change it as described below.

Setting

Auto Receive
DST

12/24-Hour format

City Code

Button Operations

Press D to toggle auto receive on and off.
Press D to toggle between Daylight Saving TIme (ON)
and standard time (OFF).
Press D to toggle between 12-hour (12H) and 24-hour
(24H) timekeeping.
Use D (+) and B (–) to change the setting.

Auto
Receive

Hour

12/24-Hour 
Format

City Code

Seconds

DST

Day

Month

Year

Minutes

City code

Setting

Seconds
Hour, Minutes,
Year, Month, Day

Button Operations

Press D to reset to 00.
Use D (+) and B (–) to change the setting.

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.

• 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.

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

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.

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 

 indicator on the watch’s

display should scroll from left to right, which
indicates that signal reception has started.

• Time calibration signal reception takes from four

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.

Current time

Receive indicator

0.644490s