Casio 2556 User Manual

About This Manual
• Button operations are indicated using the letters shown
in the illustration.
• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the "Reference" section.
General Guide
• Press C to change from mode to mode.
• In any mode, press B to illuminate the display.
Timekeeping Mode
Press C.
Timekeeping
Use the Timekeeping Mode to set and view the current time and date.
• Pressing D displays the Last Signal screen (date and time the time calibration
signal was last received) in the Timekeeping Mode.
Month – Day Hour : Minutes Seconds
Press D.
PM
indicator
Day of week
Current Time Setting
This watch automatically adjusts its time setting in accordance with a time calibration
signal. You can also perform a manual procedure to set the time and date, when
necessary.
• Before using the watch in the Continental United States, first use the procedure
under "Setting Up the Watch for Use in the Continental United States" to set the time
in accordance with a time calibration signal.
• Note that after you set your Home City (the city where you normally use the watch)
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" for more information.
• See "Setting the Time and Date Manually" for information about manual settings.
Setting Up the Watch for Use in the Continental United States
You need to make the following three settings before using this watch in the
Continental United States. The following provides a general overview of the setting
procedure. For full details, see "Setting the Time and Date Manually" and "Time
Calibration Signal Reception".
• Specify the city code for your Home City (the city where you will normally use the
watch).
• Select the auto summer time (DST) setting.
• Perform the manual time calibration signal receive operation to set the current time.
To set up the watch for use in the Continental United States
1. In the Timekeeping Mode, hold down A until the
current auto receive on/off setting to flash, which
indicates the setting screen.
2. Press C twice to move the flashing to the city code
setting.
3. Use D(+) and B(–) to select the city code you want to
use as your Home City.
• The following are the city codes for major cities in the
City code
Continental United States time zones.
LAX: Los Angeles, San Francisco, Las Vegas, Seattle
DEN: Denver, El Paso
CHI: Chicago, Houston, Dallas/Fort Worth, New Orleans
NYC: New York, Detroit, Miami, Boston
4. Press C to display the summer time (DST) setting
screen.
5. Use D to select A (auto DST).
• Auto DST specifies auto switching between Daylight
Saving Time and Standard Time.
Receive indicator
6. Press A to exit the setting screen.
7. Hold down D for about two seconds until the watch
beeps.
• Release D and the message RC! appears to indicate
that signal reception has started.
• Time calibration signal reception takes from two to six
minutes. Take care that you do not move the watch
during this time.
USER'S GUIDE 2556
World Time Mode
Alternate at the
1 second interval
Receive time
Receive date
Last Signal Screen
Alarm Mode
Stopwatch Mode
• If the watch is indoors, we recommend that you place the watch near a window to
allow better signal reception.
• After signal reception is complete, the display of the watch changes to the Last
Signal screen.
Time Calibration Signal Reception
This watch is designed to pick up a time calibration signal 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.
Before performing a signal receive operation, remove the watch from your wrist and
position it as shown in the illustrations below.
• If your watch has a resin band, pass the end of the band through the band loop and
place the watch on a stable surface.
Resin band
Pass through band loop.
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 "Setting the Time and Date Manually" for details.
• Note that signal reception is possible only when the watch is within range of a time
calibration signal transmitter, and a city code that supports signal reception is
selected as the Home City code.
• The current time setting in accordance with the time calibration signal takes priority
over any time settings you make.
• Auto receive is turned on when the watch is shipped from the factory.
• See the information under "Time Calibration Signal Reception" if you experience
problems with time calibration signal reception.
To perform manual time calibration signal reception
1. Place the watch on a stable surface so its top (12 o'clock side) is facing in the
general direction of the signal transmitter.
• Note that signal reception is poor if the watch is on its back or side.
2. In the Timekeeping Mode, hold down D for about two
Receive indicator
seconds until the watch beeps.
• Release D and the message RC! appears to indicate
that signal reception has started.
• Time calibration signal reception takes from two to six
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.
• The receive indicator indicates that the time calibration
reception attempt was successful.
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press D.
• If the receive operation is unsuccessful, the message ERR appears on the display
for about one or two minutes. After that, the watch returns to the Timekeeping Mode.
• You can also change from the Last Signal or ERR screen to the normal timekeeping
screen by pressing D.
Date Alert Mode
Time Recorder Mode
Metal band
1