Casio 2424 User manual

USER’S GUIDE 2424
1
General Guide
•Press Bto change from mode to mode.
Timekeeping Mode Alarm Mode Stopwatch Mode
Press .
Timekeeping Mode
Day of week
Month - Day
PM indicator Seconds
Hour : Minutes
DST on indicator
•In the Timekeeping Mode, press Cto switch between the 12-hour and 24-
hour format.
•When the 12-hour format is selected, “p.m.” times are indicated on the display
by P, while “a.m.” times are indicated by A. No indicators are used with the
24-hour format.
To set the time and date
1. Hold down Auntil the second’s digits start to flash.
2. Press Bto move the selection around the display in the following sequence.
DST on/off
Seconds
Day
Hour
Year
Month Minutes
3. While the second’s digits are selected (flashing), press Cto reset them to
00. If you press Cwhile the second’s count is in the range of 30 to 59, they
are reset to 00 and 1 is added to the minutes. If the second’s count is in the
range of 00 to 29, the minute’s count is unchanged.
4. While the DST∗setting is selected (DST on indicator is flashing), press Cto
toggle it on (on) and off (OF).
5. While any other setting (besides seconds) is selected (flashing), press Cto
change it. Holding down Cchanges the digits at high speed.
•The date can be set with the range of January 1, 2000 to December 31,
2039.
6. After you set the time and date, press Ato return to the Timekeeping Mode.
•If you do not operate any button for a few minutes while a selection is
flashing, the flashing stops and the watch goes back to the Timekeeping
Mode automatically.
•The day of the week is automatically set in accordance with the date.
•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 the replacement of the watch’s
battery.
∗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.
About the Multi Illuminator Backlight
•In any mode, press Lto illuminate the display for about 3 seconds.
•The backlight of this watch employs a “Multi Illuminator” light, which
illuminates the display using one of three colors.
•The color of the backlight changes according to function.
•Frequent use of the backlight shortens the battery life.
•The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
•The backlight automatically turns off whenever an alarm sounds.
Alarm Mode
When the Daily Alarm is turned on, an alarm sounds
for 20 seconds at the preset time each day. When
the Hourly Time Signal is turned on, the watch beeps
every hour on the hour.
•If you do not operate any button for a few minutes
while in the Alarm Mode, the watch goes back to
the Timekeeping Mode automatically.
To set the alarm time
1.Hold down Auntil the hour digits start to flash on
the display. The hour digits flash because they are
selected . At this time the Alarm is automatically
turned on.
2.Press Bto change the selection in the following
sequence.
Hour Minutes
Mode
indicator
Hour : Minutes
Alarm on
indicator
Hourly time
signal on
indicator
3. Press Cto increase the number. Holding down Cchanges the digits at
high speed.
•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.
4. After you set the alarm time, press Ato return to the Alarm Mode.
•If you do not operate any button for a few minutes while a selection is
flashing, the flashing stops and the watch goes back to the Alarm Mode
automatically.
To stop the alarm
•Press any button to stop the alarm after it starts to sound.
To turn the Daily Alarm and Hourly Time Signal on and off
Press Cwhile in the Alarm Mode to change the status of the Daily Alarm and
Hourly Time Signal in the following sequence.
Hourly Time
Signal only
Daily Alarm
only
Both OFFBoth ON
To test the alarm
Hold down Cwhile in the Alarm Mode to sound the alarm.
Stopwatch Mode
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.
•If you do not operate any button for a few minutes
while the all-zero screen is on the display in the
Stopwatch Mode, the watch goes back to the
Timekeeping Mode automatically.
Mode
indicator
1/100
second
Hours
Minutes
Seconds
(a) Elapsed time measurement
Start Stop Re-start Stop Clear
Start Split Split release Stop Clear
Start Split Stop Split release Clear
(b) Split time measurement
(c) Split time and 1st-2nd place times
First runner
finishes.
Second runner
finishes.
Record time of
first runner.
Record time of
second runner.
About the Auto-Start function
With the Auto-Start function, the watch performs a 5-second countdown. When
the countdown reaches zero, stopwatch operation starts automatically. During
the final three seconds of the countdown, a beeper sounds with each second.
To turn the Auto-Start function on and off
While the display is showing all zeros in the Stopwatch Mode, press Ato toggle
it on and off.
AUTO START
indicator
Press .
Auto start ONAuto start OFF
•To stop the Auto-Start countdown and return to the all-zero display, press A.
•Pressing Cwhile the Auto-Start countdown is in progress immediately starts
the stopwatch.