Casio 3125 Operation Manual

MA0801-EA
About This Manual
(Light)
(Light)
General Guide
• Press B to change from mode to mode.
• In any mode, press L to illuminate the display.
Timekeeping Mode
Timekeeping
PM indicator
Day of week
Month – Day
Seconds
Hour : Minutes
3. When the setting you want to change is flashing, press C to change it as
described below.
To change this setting
Seconds
Hour, Minutes, Year, Month,
Day, Day of week
• Pressing C while 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.
4. Press A to exit the setting screen.
• The year can be set in the range of 2000 to 2099.
• The watch's built-in full automatic calendar 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 C to toggle between 12-hour timekeeping and
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 no 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 P indicator is not displayed with the Timekeeping Mode time on the Alarm Mode
and Dual Time Mode screens.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
Alarm
Timekeeping Mode time
(Hour : Minutes)
Mode indicator
Alarm time
(Hour : Minutes)
Operation Guide 3125
• 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.
Alarm Mode
Press .
Use the Timekeeping Mode to set and view the current
time and date.
To set the time and date
1. In the Timekeeping Mode, hold down A until the
seconds start to flash, which indicates the setting
screen.
2. Press B to move the flashing in the sequence shown
below to select other settings.
Seconds Hour
Day of week Day Month
Perform this button operation
Press C to reset to 00.
Press C to increase the setting.
Holding down C changes the setting at high speed.
When the daily alarm is turned on, the alarm tone sounds
when the alarm time is reached.
You can also turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing B.
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds,
regardless of the mode the watch is in.
Stopwatch Mode
To set an alarm time
Minutes
To stop the alarm tone after it starts to sound
Press any button.
Year
To turn the Daily Alarm and Hourly Time Signal on and off
Hourly time signal
on indicator
Alarm on indicator
To test the alarm
In the Alarm Mode, hold down C to sound the alarm.
Stopwatch
1/100 second
Mode indicator
Hours Seconds
Minutes
Dual Time Mode
1. In the Alarm Mode, hold down A until the hour setting
starts to flash, which indicates the setting screen.
• This operation automatically turns on the alarm.
2. Press B to move the flashing between the hour and
minutes.
3. While a setting is flashing, use C to increase it.
Holding down C changes the setting at high speed.
• With the 12-hour format, set the time correctly as a.m.
(no indicator) or p.m. (P indicator).
4. Press A to exit the setting screen.
In the Alarm Mode, press C to cycle through the on and
off settings as shown below.
Alarm On Indicator/Hourly Time Signal On Indicator
Both on Both off Daily alarm
only
• The alarm on (
) indicator flashes while the alarm is
sounding.
• The alarm on (
) indicator and Hourly Time Signal on
( ) indicator are displayed in all modes.
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The display range of the stopwatch is 23 hours,
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 B.
Hourly Time
Signal only
1