Alarms; To Set An Alarm Time; To Test The Alarm; To Turn An Alarm And The Hourly Time Signal On And Off - Casio 3451 Operation Manual

Operation Guide 3451
Stopwatch
The stopwatch lets you measure elapsed time, split times,
Minutes Seconds
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.
Home time
• All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C
1/100 second
(page E-9).
E-50
Countdown Timer
You can set the countdown timer within a range of one
Hours Minutes
minute to 24 hours. An alarm sounds when the countdown
reaches zero.
• You also can select auto-repeat, which automatically
restarts the countdown from the original value you set
whenever zero is reached.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C (page E-9).
Home time
Seconds
E-52
• While the auto-repeat on/off setting (ON or OFF) is flashing on the display, press
D to toggle auto-repeat on (ON) and off (OFF).
4. Press A to exit the setting screen.
• The auto-repeat on indicator ( ) is displayed on the Countdown Timer Mode
screen while this function is turned on.
• Frequent use of auto-repeat and the alarm can run down battery power.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached and auto-repeat is turned off, 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.
• When auto-repeat is turned on, the countdown will restart automatically without
pausing when it reaches zero. The alarm sounds to signal when the countdown
reaches zero.
• The countdown timer measurement operation continues even if you exit the
Countdown Timer Mode.
To stop a countdown operation completely, first pause it (by pressing D), and then
•
press A. This returns the countdown time to its starting value.
E-54

To set an alarm time

1. In the Alarm Mode, use D to scroll through the alarm
screens until the one whose time you want to set is
displayed.
AL1
SIG
Alarm on indicator
2. Hold down A until the hour setting of the alarm time start to flash, which indicates
the setting screen.
• This automatically turns on the alarm.
3. Press C to 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. (no indicator) or p.m. (P indicator).
5. Press A to exit the setting screen.
E-56

To turn an alarm and the hourly time signal on and off

1. In the Alarm Mode, use D to select an alarm or the hourly time signal.
2. When the alarm or the hourly time signal you want is selected, press A to toggle it
on and off.
: Indicates alarm is on.
: Indicates snooze alarm is on.
: Indicates Hourly Time Signal is on.
• The alarm on indicator ( ), snooze on indicator (
signal on indicator ( ) are displayed on all modes.
• If any alarm is on, the alarm on indicator is shown on the display in all modes.
E-58
D
AL2 AL3
SNZ AL4
), and hourly time
To measure times with the stopwatch
Elapsed Time
D D D
Start Stop Resume
Split Time
D A A
Start Split Split release
(SPL displayed)
Two Finishes
D A D
Start Split Stop
First runner Second runner
finishes. finishes.
Display time of
first runner.
To configure countdown start time and auto-repeat settings
1. While the countdown start time is on the display in the
Countdown Timer Mode, hold down A until the hour
setting of the countdown start time starts to flash, which
indicates the setting screen.
• If the countdown start time is not displayed, use the
procedure under "To use the countdown timer" (page
E-54) to display it.
2. Press C to move the flashing in the sequence shown
below, and select the setting you want to change.
Start Time
(Hours)
3. Perform the following operations, depending on which
setting is currently selected on the display.
While the start time setting is flashing, use D (+) and
•
Auto-repeat on indicator
B (–) to change it. Set 0:00 to specify 24 hours.

Alarms

The Alarm Mode gives you a choice of four daily alarms
Alarm time
and one snooze alarm. Also use the Alarm Mode to turn
(Hour : Minutes)
the hourly time signal (SIG) on and off.
• There are five alarms numbered AL1 through AL4, and
SNZ. You can configure SNZ as a snooze alarm only.
Alarms AL1 through AL4 can be used as daily alarms
only.
• When you enter the Alarm Mode, the data you were
viewing when you last exited the mode appears first.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C (page E-9).
Home time
Alarm number
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in. In the case of the snooze alarm, the alarm operation is performed a total
of seven times, every five minutes, until you turn the alarm off (page E-58).
• Alarm and hourly time signal operations are performed in accordance with the
Timekeeping Mode time.
• To stop the alarm tone after it starts to sound, press any button.
• Performing any one of the following operations during a 5-minute interval between
snooze alarms cancels the current snooze alarm operation.
– Displaying the Timekeeping Mode setting screen (page E-12)
– Displaying the SNZ setting screen (page E-56)
– Swapping the Home City time and Local Time City time in the Timekeeping Mode
(page E-20)
– Changing the DST setting for a city in the World Time Mode while the same city is
selected for the Home City (page E-48)

To test the alarm

In the Alarm Mode, hold down D to sound the alarm.

Illumination

This watch has an EL (electro-luminescent) panel that
causes the entire display to glow for easy reading in the
dark.
• The electro-luminescent panel that provides illumination
loses power after very long use.
• Illumination 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.
• Illumination turns off automatically whenever an alarm
sounds.
• Frequent use of illumination runs down the battery.
D A
Stop Clear
D A
Stop Clear
A A
Split release Clear
Display time of
second runner.
E-51
Start Time Auto-Repeat
(Minutes) On/Off
E-53
E-55
E-57
E-59