Casio 2623, 2461 User Manual
USER’S GUIDE 2255/2461/2623
General Guide
• Press C to change from mode to mode.
• Pressing E in any mode besides the Alarm Mode illuminates the display for about
three seconds. The backlight is disabled while a setting screen is on the display.
Timekeeping Mode Day Counter Mode
Press C.
Timekeeping Mode
Press D to toggle between 12-hour and 24-hour time-
Seconds
Minutes
DST indicator 2
DST indicator 2
Press . Press .
Beep
Loud
Day
keeping.
• With 12-hour timekeeping, times between midnight and
noon are indicated by A (am), while times between noon
and midnight are indicated by P (pm).
• The A and P indicators do not appear for 24-hour time-
keeping.
• Pressing B plays a melody. To stop a playing melody,
press any button besides E.
• Special melodies play each year on January 1 and December 25.
• Pressing E while a melody is playing toggles the dis-
play between an animated character and the name of
the melody.
• Press E to illuminate the display for about three sec-
onds.
Volume
(VOL)
3. While the second’s setting is selected (flashing), press
• If you press D or B while the seconds setting is in the
range of 30 to 59, the seconds are reset to 00 and 1 is
added to the minutes. If the seconds setting is in the
range of 00 to 29, the minutes count is unchanged.
• While the DST∗ (Daylight Saving Time) setting is se-
lected, press D or B to toggle it on and off.
• DST indicator 1 is displayed in the Timekeeping Mode
setting screen only when the DST setting is selected. It
shows ON when the DST setting is on, and OFF when
the DST setting is off.
• DST indicator 2 is displayed in the Timekeeping Mode,
Day Counter Mode and Alarm Mode when the DST set-
ting is turned on.
∗
Daylight Saving Time (DST), which is also sometimes
called “summer time” advances the time for one hour, as
is the custom in some areas during the summer. Remember that not all countries or even local areas use
Daylight Saving Time.
Sound
(SOUND)
D or B to reset it to 00.
Musical tone
Press or .
Off
Soft
MonthDay
Month
Day of week
Hour
PM indicator
Timekeeping Mode Settings
In addition to settings for the current time and date, the Timekeeping Mode setting
screen also lets you turn button tones and melody play on and off, adjust tones and
melody volume, and adjust display contrast.
To make Timekeeping Mode settings
1. While in the Timekeeping Mode, hold down A until the second’s digits flash on the
display, indicating the setting screen.
2. Press C to move the flashing in the sequence shown below. Press E to move
the flashing in the opposite direction.
Press . Press .
Seconds DST Hour Minutes Year
Contrast
(CNT)
DST indicator 1
• While the SOUND (button tones) setting is selected, press D or B to turn the
beep and musical tone on and off, as shown below.
• Changing the SOUND also changes the Hourly Time Signal tones.
•
While the VOL setting is selected, press D or B to toggle it between loud and soft.
• With some models, changing the volume setting affects volume very little.
• While the CNT setting is selected, press D to make the display darker, or B to
make it lighter.
• While any other setting is selected (flashing), press D to increase it or B to de-
crease it. Holding down either button changes the setting at high speed.
• If you do not perform any operation for a few minutes while a setting screen (with
flashing digits) is on the display, the watch automatically exits the setting screen.
• If you do not perform any operation for a few minutes in any mode besides Stopwatch Mode, the watch automatically reverts to the normal timekeeping screen.
Alarm Mode Stopwatch Mode
4. After you make the settings you want, press A to exit the setting screen.
• The day of the week is automatically set in accordance with the date.
• The date can be set within the range of January 1, 2000 to December 31, 2039.
• The watch’s built-in full automatic calendar automatically makes allowances for dif-
ferent month lengths and leap years.
Once you set the date, there should be no reason to change it except after the
replacement of the watch’s battery.
Memo Mode
About the Backlight
Pressing E in any mode besides the Alarm Mode illuminates the display for about
three seconds. The backlight is disabled while a setting screen is on the display.
• The backlight of this watch employs an electro-luminescent (EL) light, which loses
its illumination power after very long term use.
• Frequent use of the backlight shortens battery life.
• The illumination provided by the backlight may be hard to see when viewed under
direct sunlight.
• The backlight automatically turns off an alarm sounds.
• The watch emits an audible sound whenever the display is illuminated. This does
not indicate malfunction.
About the animated character
An animated character appears on the display of the watch any time you turn on the
EL backlight after December 25 (2000 for Module 2255; 2001 for Module 2461; 2002
for Module 2623). No animated character appears before then.
Day Counter Mode
Mode indicator
Tex t
Year
Month
Target Date
Day counter
record number
Number of days
The Day Counter Mode lets you count the number of days from the Timekeeping
Mode’s current date to a specific target date.
• There are five Day Counter records, each of which can be assigned up to 12 characters of text and a target date.
• When a target date is reached, the DAYS indicator flashes on the display in the
Timekeeping Mode. The DAYS indicator also flashes in the Day Counter Mode
when the screen for the target date is on the display.
• The DAYS indicator flashes on the target date each year, regardless of the year
setting of the target date.
• The initial default date for a Day Counter record is 2001/1/1, and the text area
contains all spaces. (All spaces for the text display a series of hyphens “ – – – – – ”.)
Recalling Day Counter Data
In the Day Counter Mode, press D to scroll through the Day Counter record screens.
• The day count is a negative value whenever the target date comes before the current date.
To set the target date
1. In the Day Counter Mode, press D to display a record number you want to set.
2. Hold down A until the first (leftmost) text character starts to flash on the display.
This indicates the input screen.
3. Press C to move the flashing in the sequence shown below. Press E to move
the flashing in the opposite direction.
Press . Press .
Character 1
Day
4. While the flashing is located within the text area, use D or B to scroll through
characters at the current location of the flashing. Holding down either button scrolls
through characters at high speed.
Press . Press .
Space A to Z
Hyphen SymbolsNumbers
∗
See the “CHARACTER LIST” for details.
Day
DAYS indicator
Character 12
Punctuation
YearMonth
Japanese
characters
1
USER’S GUIDE 2255/2461/2623
e
Mode indicator
Memo number
Title
5. While any other setting is selected, press D to increase it or B to decrease it.
Holding down either button changes the setting at high speed.
• Pressing D and B at the same time while the flashing is located within the text
area clears any input text and resets the date setting to the current date. At this
time the message “CLEAR” appears on the display.
• Pressing D and B at the same time while the flashing is located within the date
area resets the date setting to the current date without affecting the text.
6. After you make the settings you want, press A to exit the input screen.
• The date can be set within the range of January 1, 1940 to December 31, 2039.
Alarm Mode
Mode indicator
Melody name
Current time
Alarm number
You can set up to five melody alarms. When a daily alarm is turned on, its melody
alarm sounds for about 20 seconds at the preset time each day. In the Timekeeping
Mode, press any button (except E) to stop the melody alarm after it starts to sound.
Pressing E while a melody is playing toggles the display between an animated character and the name of the melody that is playing. When the Hourly Time Signal is
turned on, the watch beeps every hour on the hour.
Special melodies play on January 1 and December 25, regardless of the current
alarm sound setting (beep or melody), and cannot be played by setting the watch
ahead or back to these dates.
Normally, the following events occur at midnight on January 1 and December 25,
your local time. Note however that these events do not occur in area or countries (for
example, parts of Australia) located in time zones that come before (east of) Japan’s
time zone.
• The time signal sounds, regardless of whether the hourly time signal is turned on or
off.
• The backlight lights for three seconds.
•
The special melodies play automatically. There is no way to disable play of the special melodies. To stop a melody when it starts to play, press any button besides E.
To set the alarm time for January 1 and December 25
1. While in the Alarm Mode, press D to display the alarm number you want to set.
Alarm 1 Alarm 5Alarm 2 Alarm 3 Alarm 4
2. Hold down A until the hour digits start to flash on the display, indicating the setting
screen. The alarm is automatically turned on at this time.
3. Press C to change the selection in the sequence shown below.
4. Press D to increase it or B to decrease it. Holding down either button changes
the setting at high speed.
5. After you make the settings you want, press A to exit the setting screen.
To set the alarm time for other days
1. While in the Alarm Mode, press D to display the alarm number you want to set.
Alarm 1 Alarm 5Alarm 2 Alarm 3 Alarm 4
2. Hold down A until the melody setting starts to flash on the display, indicating the
setting screen. The alarm is automatically turned on at this time.
3. Press C to change the selection in the sequence shown below.
Melody Setting Hour Minutes
4. While melody setting is selected, press D or B to toggle it between BEEP and
melody.
• While any other setting is selected, press D to increase it or B to decrease it.
Holding down either button changes the setting at high speed.
5. After you make the settings you want, press A to exit the setting screen.
• The format (12-hour and 24-hour) of the alarm time matches the format you select
for normal timekeeping.
• When setting the alarm time using the 12-hour format, take care to set the time
correctly as morning or afternoon.
To stop the alarm
• Press any button to stop the alarm after it starts to sound. Pressing E while in the
Timekeeping Mode displays the name of the melody, alternating with animated characters.
To turn a daily alarm or the Hourly Time Signal on and off
1. Use D to display the alarm you want to turn on or off, or the screen for turning the
Hourly Time Signal on or off.
2. Press B to toggle the displayed alarm or Hourly Time Signal on and off.
Hour
SIG: 00 (Hourly Time Signal)
Hour Minutes
SIG: 00 (Hourly Time Signal)
Minutes
Alarm indicator 1
Alarm indicator 3
Alarm indicator 2
Hourly Time Signal
indicator 1
Hourly Time Signal
indicator 3
Hourly Time Signal
indicator 2
• Alarm indicator 1 is displayed in the Alarm Mode only.
It indicates the on/off status of the currently displayed
alarm only. Note that this indicator is used for different
purposes in other modes.
• Alarm indicator 2 is displayed in all modes when any of
the five alarms is turned on.
• Alarm indicator 3 is displayed in the Alarm Mode only.
It shows on when the currently displayed alarm is on,
and OF when the currently displayed alarm is off.
• Hourly Time Signal indicator 1 is displayed in the Alarm
Mode only when the Hourly Time Signal is turned on.
Note that this indicator is used for different purposes in
other modes.
• Hourly Time Signal indicator 2 is displayed in all modes
when the Hourly Time Signal is turned on.
• Hourly Time Signal indicator 3 is displayed in the Alarm
Mode only. It shows on when the Hourly Time Signal is
on, and OF when the Hourly Time Signal is off.
To test the alarm
In the Alarm Mode, display the alarm you want to sound,
and then press E to play its melody or beep. You can
also press E to play an alarm’s melody while setting the
alarm time.
• To stop a playing melody or beep, press any button.
Stopwatch Mode
Mode indicator
Current tim
Hours
Minutes
Seconds
1/100 second
Elapsed time measurement
Start
Split time measurement
Start
Split time and 1st-2nd place times
Start
The Stopwatch Mode lets you measure elapsed time, split
times, and two finishes. The range of the stopwatch is
23 hours, 59 minutes, 59.99 seconds. You can use the
EL backlight by pressing E at any time while the stopwatch is operating.
Stop Re-start Stop Clear
Split Split release Stop Clear
Split Stop Split release Clear
First runner
finishes.
Second runner
finishes.
Record time of
first runner.
Record time of
second runner.
Memo Mode
The Memo Mode lets you store up to five memos, each
with an eight-character title and 16 characters of data.
Recalling a Memo
In the Memo Mode, press D to scroll through the Memo
titles. When you find the title you want, press B, and the
screen alternates between the title and data.
• The display can show only five characters at a time.
Longer text scrolls continuously from right to left. The
symbol “
” indicates that the character or digit to the
left is the last, and the character or digit to the right is
the first.
• A series of hyphens “ – – – – – ” is displayed for a memo
that does not contain any data.
To input a memo
1. In the Memo Mode, press D to display the memo number you want to set.
2. Hold down A until the first (leftmost) character of the memo title starts to flash on
the display. This indicates the input screen.
3. Press C to move the flashing in the sequence shown below. Press E to move
the flashing in the opposite direction.
Press . Press .
Title Character 1
Data Character 16
Title Character 8
Data Character 1
2
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