Countdown Timer - Casio 3143 Operation Manual

Stopwatch
The stopwatch lets you measure elapsed time,
Hours
split times, and two finishes.
• The display range of the stopwatch is 23 hours,
1/100 second
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
Minutes Seconds
returns to elapsed time measurement.
• All of the operations in this section are
Current time
performed in the Stopwatch Mode, which you
enter by pressing C.
To measure times with the stopwatch
Elapsed Time
D D D
J J
Start Stop Re-start
Split Time
D B B
J J
Start Split Split release
(SPL displayed)
Two Finishes
D B D
J J
Start Split Stop
First runner Second runner
finishes. finishes.
Display time
of first runner.

Countdown Timer

You can set the countdown timer within a range
Hours
of one minute to 24 hours. An alarm sounds
when the countdown reaches zero.
• All of the operations in this section are
performed in the Countdown Timer Mode,
which you enter by pressing C.
To set the countdown start time
1. While the countdown start time is on the
display in the Countdown Timer Mode, hold
Minutes Seconds
down A until the hour setting of the
Current time
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" to display it.
2. Press C to move the flashing between the hour and minute settings.
3. Use D (+) and B (–) to change the flashing item.
• To set the starting value of the countdown time to 24 hours, set
' .
OO OO
4. Press A to exit the setting screen.
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, the alarm sounds for five
seconds or until you stop it by pressing any button. The countdown time is
reset to its starting value automatically when the alarm sounds.
• Press D while a countdown operation is in progress to pause it. Press D
again to resume the countdown.
• To stop a countdown operation completely, first pause it (by pressing D)
and then press B. This returns the countdown time to its starting value.
Alarms
You can set five independent daily alarms. When
Alarm number
an alarm is turned on, the alarm tone sounds
when the alarm time is reached.
You also can turn on an Hourly Time Signal,
which will cause the watch to beep twice every
hour on the hour.
• The alarm number (ALM-1 through
ALM-5) indicates an alarm screen. SIG is
shown when the Hourly Time Signal screen is
Current time
on the display.
Alarm time
• When you enter the Alarm Mode, the data you
(Hour : Minutes)
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.
Operation Guide 3143
D B
J J
Stop Clear
D B
J J
Stop Clear
B B
J J
Split release Clear
Display time of
second runner.
To set an alarm time
1. In the Alarm Mode, use D and B to scroll
through the alarm screens until the one whose
time you want to set is displayed.
ALM-1
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.
Alarm Operation
The alarm sounds in all modes at the preset time for about 10 seconds, or
until you stop it by pressing any button.
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
To turn an alarm and the Hourly Time Signal on and off
1. In the Alarm Mode, use D and B 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 turn it on and off.
Indicates alarm is ON.
Indicates Hourly Time Signal is ON.
• The alarm on indicator (
) and the Hourly Time Signal on indicator ( ) 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 in all
modes.
Illumination
The display of the watch is illuminated using an
Auto light switch
EL (electro-luminescent) panel for easy reading
on indicator
in the dark. The watch's auto light switch turns on
illumination automatically when you angle the
watch towards your face.
• The auto light switch must be turned on
(indicated by the auto light switch on indicator)
for it to operate.
• See "Illumination Precautions" for other
important information about using illumination.
To turn on illumination manually
Press L in any mode to illuminate the display for about one second.
• The above operation turns on illumination regardless of the current auto
light switch setting.
• Illumination is disabled during time calibration signal reception, and while
configuring sensor measurement mode settings.
About the Auto Light Switch
Turning on the auto light switch causes illumination to turn on, whenever you
position your wrist as described below in any mode.
Note that this watch features a "Full Auto EL Light", so the auto light switch
operates only when available light is below a certain level. It does not
illuminate the display under bright light.
• The auto light switch is always disabled, regardless of its on/off setting,
when any one of the following conditions exists.
While an alarm is sounding
During sensor measurement
While a receive operation is in progress in the Receive Mode
Moving the watch to a position that is parallel to the ground and then tilting
it towards you more than 40 degrees causes illumination to turn on.
• Wear the watch on the outside of your wrist.
Parallel to
ground
D
ALM-2 ALM-3
B
SIG ALM-5 ALM-4
More than
40 °
7