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Using The Alarm; To Set An Alarm Time; To Test The Alarm; Countdown Timer - Casio 5381 Operation Manual

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Operation Guide 5381
To confi gure the countdown timer
1. While the countdown start time is on the display in
the Countdown Timer Mode, hold down A until the
current countdown start time starts to fl ash, which
indicates the setting mode.
The hour and minute hands automatically move out of
the way at this time (page E-15).
If the countdown start time is not displayed, use the
procedure under "To perform a countdown timer
operation" (page E-51) to display it.
2. Use D (+) and B (–) to change the setting.
You can set a start time in the range of 1 to 60 minutes in 1-minute increments.
3. Press A to exit the setting mode.
E-50

Using the Alarm

The watch beeps for about 10 seconds when the alarm
time is reached. The hourly time signal causes the watch
to beep every hour on the hour.

To set an alarm time

1. Use C to select the Alarm Mode as shown on page E-13.
This will cause the display to change as shown below.
If SIG appears on the display, press D.
1 second
Mode name
E-52
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.
Each press of D cycles between the alarm time screen and the hourly time
signal SIG setting screen.
2. Press A to toggle the displayed setting (alarm or hourly time signal) between
on and off.

To stop the alarm

Press any button.
E-54
2. Press C 10 times to display the illumination duration
setting screen (page E-22).
The screen will show either LT1 or LT3.
3. Press D to toggle the illumination duration setting
between LT1 (1.5 seconds) and LT3 (3 seconds).
4. After all the settings are the way you want, press A to
exit the setting screen.
E-56
3. Press C.
Hour hand and minute hand
This enters the hour and minute hand adjustment
mode.
Press C again* to enter the tide hand adjustment
mode.
* Nothing will happen if you press C while the hands
are moving.
4. If the hour and minute hands are not at 12 o'clock,
use D and B to adjust them until they are.
5. Press A to return to the Timekeeping Mode.
Check to make sure that the time indicated by the hands matches the time on the
digital display. If the times don't match, perform the correction procedure above
again.
E-58
Alternates
Alarm time
ON/OFF

To perform a countdown timer operation

D
D
D
Start
Stop
(Resume)
Before starting a countdown timer operation, check to make sure that a
countdown operation is not in progress (indicated by the seconds counting down).
If it is, press D to stop it and then A to reset to the countdown start time.
To stop the alarm
Press any button.
2. Hold down A for about two seconds until the alarm time starts to fl ash. This is
the setting mode.
The hour and minute hands automatically move out of the way at this time (page
E-15).
3. Press C to move the fl ashing between the hour and minute settings.
4. While a setting is fl ashing, use D (+) and B (–) to change it.
5. Press A to exit the setting mode.

To test the alarm

In the Alarm Mode, hold down D to sound the alarm.
Illumination
The face of the watch is illuminated for easy reading in the dark.
To turn on illumination
In any mode (except a setting mode), press B to illuminate the display.
Illumination Precautions
Illumination may be hard to see when viewed under direct sunlight.
Illumination turns off automatically whenever an alarm sounds.
Frequent use of illumination runs down the battery.
Changing the Illumination Duration
1. In the Timekeeping Mode, hold down A until ADJ appears.
This indicates the city code setting mode.
The hour and minute hands automatically move out of the way at this time (page
E-15).
Adjusting Hand Positions
The watch hands can go out of alignment with the time on the digital display if it
is exposed to strong magnetism or impact. If this happens, you should adjust the
hand positions.
Important!
You do not need to perform the operation below as long as the analog hands
indicate the same time as the digital display.
1. Hold down A for about fi ve seconds until H.SET
Tide hand
appears.
This indicates the tide hand adjustment mode.
Though ADJ will appear as you hold down A, do not
release the button yet.
2. If the tide hand is not at 12 o'clock, use D and B to
adjust it until it is.
Button Operation Tone
You can turn the button operation tone on or off as
desired.
Even if you turn off the button operation tone, alarms,
the Hourly Time Signal, and other beepers all operate
normally.
To turn the button operation tone on and off
1. In the Timekeeping Mode, hold down A until ADJ
appears.
This indicates the city code setting mode.
The hour and minute hands automatically move out of
the way at this time (page E-15).
2. Press C nine times to display the button operation tone On/Off screen (page E-22).
The screen will show either KEY or MUTE.
D
A
(Stop)
Reset
E-51
E-53
E-55
E-57
E-59

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