Casio 2454 User manual

USER’S GUIDE 2454
1
General Guide
•Press Cto change from mode to mode.
•In any mode, press Lto illuminate the display.
Timekeeping Mode Telememo Mode Alarm Mode Stopwatch Mode Countdown Timer Mode Dual Time Mode
Press .
Timekeeping
Use the Timekeeping Mode to set and view the
current time and date.You also use the Timekeeping
Mode to select the display color pattern.
To set the time and date
1. In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2. Press Cto move the flashing in the sequence
shown below to select other settings.
Hour Minutes
Seconds DST
Month YearDay
Color Pattern
Day of week
Month – Day
PM indicator
Hour : Minutes
Seconds
3. When the setting you want to change is flashing, use Dand Bto change it
as described below.
To change this setting
Seconds
DST
Hour, Minutes, Year,
Month, Day
Color Pattern
Perform this button operation
Press Dto reset to 00.
Press Dto toggle between Daylight Saving Time ( ) and
standard time ( ).
Use D(+) and B(–) to change the setting.
Use Dand Bto change the color pattern setting.
•Pressing Dwhile the seconds are in the range of 30 to 59 resets them to
00 and adds 1 to the minutes. In the range of 00 to 29, the minutes are
unchanged.
•See “Daylight Saving Time (DST)” for details on DST setting.
•See “Color Pattern Setting” for details about the color pattern setting.
4. Press Ato exit the setting screen.
•The day of the week is automatically displayed in accordance with the date
(year, month, and day) settings.
•The year can be set in the range of 2000 to 2039.
•The watch’s built-in full automatic calendar automatically makes allowances
for different month lengths and leap years. Once you set the date, there
should be no reason to change it except after you have the watch’s battery
replaced.
To toggle between 12-hour and 24-hour timekeeping
In the Timekeeping Mode, press Dto toggle between 12-hour timekeeping
(indicated by Aor Pon the display), or 24-hour timekeeping.
•With the 12-hour format, the P(PM) indicator appears to the left of the hour
digits for times in the range of noon to 11:59 p.m. and the A(AM) indicator
appears to the left of the hour digits for times in the range of midnight to
11:59 a.m.
•With the 24-hour format, times are displayed in the range of 0:00 to 23:59,
without any indicator.
•The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode
is applied in all modes.
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour
from Standard Time. Remember that not all countries or even local areas use
Daylight Saving Time.
To toggle the Timekeeping Mode time between DST and Standard Time
1. In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2. Press Conce to display the DST setting screen,
which is indicated by a flashing (DST on) or
(DST off) indicator.
3. Press Dto toggle between Daylight Saving Time
(displayed) and standard time (
displayed).
4. Press Ato exit the setting screen.
•The DST indicator appears on the display to
indicate that daylight saving time is turned on.
Color Pattern Setting
This watch is equipped with two color LCD panels, which provide a choice of
12 different color patterns from which you can choose.
To change the color pattern setting
1. In the Timekeeping Mode, hold down Auntil the
seconds start to flash, which indicates the setting
screen.
2. Use Cto cycle through the available setting
screens until the color pattern setting screen
(indicated by the flashing indicator) is on the
display.
3. Use Band Dto select the color pattern you
want.
4. Press Ato exit the setting screen.
Telememo
Telememo lets you store up to 30 records, each
containing name and telephone number data.
Records are automatically sorted based on the
characters of the name.You can recall records by
scrolling through them on the display.
•See “Character List” at the back of this manual for
details on how the watch sorts records.
•All of the operations in this section are performed in
the Telememo Mode, which you enter by pressing
C.
Remaining memory
Telephone number
Name
To create a new Telememo record
1.In the Telememo Mode, use Band Dto cycle
through the record screens until the new data
screen appears.
•The new data screen is the one that is blank
(contains no name and telephone number).
•If the new data screen does not appear, it means
that memory is full. To store another record, you
will first have to delete some of the records stored
in memory.
2.Hold down Auntil the flashing cursor ( ) appears
in the name area of the display, which indicates the
setting screen.
3.Use Dand Bto change the character at the
cursor position in the name area. The character
changes in the following sequence.
to to
(space)
Press .
Press .
4. When the character you want is at the cursor position, press Cto move the
cursor to the right.
5. Repeat steps 3 and 4 until the name is complete.
•You can input up to eight characters for the name.
6. After you input the name, press Cas many times as necessary to move the
cursor to the number area.
•When the cursor is located at the eighth space of the name area, moving
the cursor to the right causes it to jump to the first digit of the number.
When the cursor is at the 12th digit of the number, moving it to the right (by
pressing C) causes it to jump to the first character in the name.
Alarm on indicator
7. Use Dand Bto change the character (hyphen, number, or space) at the
cursor position in the number area. The character changes in the following
sequence.
Press .
Press .
(space)
to
8. When the character you want is at the cursor position, press Cto move the
cursor to the right.
9. Repeat steps 7 and 8 until you complete number input.
•You can input up to 12 digits for the number.
•The number initially contains all hyphens. You can leave the hyphens or
replace them with numbers or spaces.
10. Press Ato store your data and return to the Telememo record screen
(without the cursor).
•The name can show only three characters at a time, so longer text scrolls
continuously from right to left. The last character is indicated by the symbol
after it.
To recall Telememo records
In the Telememo Mode, use D(+) and B(–) to scroll through Telememo
records on the display.
To edit a Telememo record
1. In the Telememo Mode, scroll through the records and display the one you
want to edit.
2. Hold down Auntil the flashing cursor appears on the display.
3. Use Cto move the flashing to the character you want to change.
4. Use Band Dto change the character.
•For details on inputting characters, see “To create a new Telememo record”
(step 3 for name input and 7 for number input).
5. After making the changes that you want, press Ato store them and return
to the Telememo record screen.
To delete a Telememo record
1. In the Telememo Mode, scroll through the records and display the one you
want to delete.
2. Hold down Auntil the flashing cursor appears on the display.
3. Press Band Dat the same time to delete the record.
•The message appears to indicate that the record is being deleted.
After the record is deleted, the cursor appears on the display, ready for input.
4. Input data or press Ato return to the Telememo record screen.

USER’S GUIDE 2454
2
Alarms
You can set five independent Daily Alarms. When an
alarm is turned on, the alarm tone sounds when the
alarm time is reached. One of the alarms is a snooze
alarm, while the other four are normal (non-snooze)
alarms that sound for 20 seconds.
You can also turn on an Hourly Time Signal that
causes the watch to beep twice every hour on the
hour.
•The snooze alarm repeats every five minutes, up to
seven times.
•The alarm number of the display indicates the
alarm type, as described below.
through : Normal alarm screen
: Snooze alarm screen
: Hourly Time Signal screen
•Alarm settings (and Hourly Time Signal settings)
are available in the Alarm Mode, which you enter by
pressing C.
Alarm time (Hour : Minutes
)
Timekeeping Mode time
AM indicator
Alarm number
To set an alarm time
1. In the Alarm Mode, press Dto scroll through the
alarm screens until the one whose time you want
to set is displayed.
2. After you select an alarm, hold down Auntil the hour setting of the alarm
time starts to flash, which indicates the setting screen.
•This operation automatically turns on the alarm.
3. Press Cto move the flashing between the hour and minute settings.
4. While a setting is flashing, use D(+) and B(–) to change it.
•When setting the alarm time using the 12-hour format, take care to set the
time correctly as a.m. (Aindicator) or p.m. (Pindicator).
5. Press Ato exit the setting screen.
Alarm Operation
Starting from the point the Timekeeping Mode time reaches one hour before an
alarm time the display pattern changes each second. This pre-alarm feature
lets you know that an alarm time is about to be reached. When the actual
alarm time is reached, an alarm tone sounds for 20 seconds. In the case of the
snooze alarm, the alarm repeats up to seven times every five minutes until the
alarm is turned off.
•Pressing any button stops the pre-alarm operation or the alarm tone
operation.
•The pre-alarm feature works in the Timekeeping Mode only.
To test the alarm
In the Alarm Mode, hold down Bto sound the alarm.
To turn a normal 20-second alarm and the Hourly Time Signal on and off
1. In the Alarm Mode, press Dto select an normal 20-second alarm (
through ) or the Hourly Time Signal ( ).
2. When the alarm or the Hourly Time Signal you want is selected, press Bto
turn it on and off.
xIndicates alarm is on.
yIndicates Hourly Time Signal is on.
Alarm on indicator
•The alarm on indicator (x) and the Hourly Time Signal on indicator (y)
are shown on the display in all modes while these functions are turned on.
•If any alarm is on, the alarm on indicator is shown on the display when you
change to another mode.
To turn the snooze alarm on and off
1. In the Alarm Mode, press Dto select the snooze alarm ( ).
2. Press Bto turn it on (SNZ and xdisplayed) and off (SNZ and xnot
displayed).
•The snooze alarm on indicator ( ) is shown on the display in all modes
while this function is turned on.
1/100 second
Minutes
Seconds
Timekeeping Mode time
Stopwatch
The stopwatch lets you measure elapsed time, split
times, and two finishes.
•The display range of the stopwatch is 59 minutes,
59.99 seconds.
•The stopwatch continues to run, restarting from
zero after it reaches its limit, until you stop it.
•The stopwatch measurement operation continues
even if you exit the Stopwatch Mode.
•Exiting the Stopwatch Mode while a split time is
frozen on the display clears the split time and
returns to elapsed time measurement.
•All of the operations in this section are performed in
the Stopwatch Mode, which you enter by pressing
C.
To measure times with the stopwatch
Elapsed Time
Start Stop Re-start Stop Clear
Start Split Split release Stop Clear
Start Split Stop Split release Clear
Split Time
Two Finishes
First runner
finishes.
Display time of
first runner.
(SPL displayed)
Second runner
finishes.
Display time of
second runner.
Countdown Timer
The countdown timer can be set within a range of 1
minute to 24 hours. An alarm sounds when the
countdown reaches zero.
•The initial default countdown start time when you
purchase the watch or after you have its battery
replaced is 5 minutes.
•Countdown timer functions are available in the
Countdown Timer Mode, which you enter by
pressing C.
To use the countdown timer
Press Dwhile in the Countdown Timer Mode to start
the countdown timer.
•When the end of the countdown is reached, the
alarm sounds for 10 seconds or until you stop it by
pressing any button. The countdown time is
automatically reset to its starting value after the
alarm stops.
Seconds
Minutes
Hours
Timekeeping Mode time
•Press Dwhile a countdown operation is in progress to pause it. Press D
again to resume the countdown.
•To completely stop a countdown operation, first pause it (by pressing D),
and then press B. This returns the countdown time to its starting value.
To set the countdown start time
1. In the Countdown Timer Mode, hold down Auntil the hour setting of the
countdown start time starts to flash, which indicates the setting screen.
2. Press Cto move the flashing between the hour and minute settings.
3. While a setting is flashing, use D(+) and B(–) to change it.
•To set the starting value of the countdown time to 24 hours, set 0:00.
4. Press Ato exit the setting screen.
Dual Time
The Dual Time Mode lets you keep track of time in a
different time zone.
To set the Dual Time
1.Press Cto enter the Dual Time Mode .
2.Use D, B, and Ato set the Dual Time Mode
time.
•Each press of D(+) and B(–) changes the time
setting in 30-minute increments.
•Pressing Asets the Dual Time Mode to the same
time as the Timekeeping Mode.
Timekeeping Mode time
Dual time
Reference
This section contains more detailed and technical information about watch
operation. It also contains important precautions and notes about the various
features and functions of this watch.
Auto Display
The Auto Display feature of this watch automatically
cycles through the available color patterns.
To turn off Auto Display
Press any button to turn off Auto Display.
Doing so also performs the corresponding button
function as described below.
Aor B: Enters the Timekeeping Mode.
C: Enters the Telememo Mode.
D: Toggles between 12-hour and 24-hour formats.
L: Tu r ns on the backlight
•Tu r ning off Auto Display also returns to the default
color pattern.
To turn on Auto Display
Hold down Cfor about two seconds until the watch beeps.
•Note that Auto Display cannot be performed while a setting screen is on the
display.
Auto Return Features
•If you leave the watch in the Telememo Mode for two or three minutes without
performing any operation, it automatically changes to the Timekeeping Mode.
•If you leave a screen with flashing digits or a cursor on the display for two or
three minutes without performing any operation, the watch automatically
saves any settings you have made up to that point and exits the setting
screen.
Data and Setting Scrolling
The Band Dbuttons are used in various modes and setting screens to scroll
through data on the display. In most cases, holding down these buttons during
a scroll operation scrolls through the data at high speed.
Initial Screens
When you enter the Telememo or Alarm Mode, the data you were viewing
when you last exited the mode appears first.
Backlight Precautions
The backlight uses an EL (electro-luminescent) panel that causes the entire
display to glow for easy reading in the dark.
In any mode, press Lto illuminate the display for about two seconds.
•The electro-luminescent panel that provides illumination loses power after
very long use.
•The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
•The watch may emit an audible sound whenever the display is illuminated.
This is due to vibration of the EL panel used for illumination, and does not
indicate malfunction.
•The backlight automatically turns off whenever an alarm sounds.
•Frequent use of the backlight shortens the battery life.