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E-111
Illumination
The display of the watch is illuminated for easy reading 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 enabled (page E-113) for it to operate.
To turn on illumination manually
Press
L
in any mode to illuminate the display.
• Illumination will turn off automatically if an alarm starts to sound or if you perform a crown operation.
• Illumination will not turn on if a calibration signal receive operation or hand movement operation is in
progress. Also, illumination may not turn on while a sensor is taking a reading.
To change the illumination duration
1. In the Timekeeping Mode, pull out the crown.
2. Press
B
six times. This will cause
LIGHT
to appear on the digital display, along with a fl
ashing value (
1
or
3
) indicating the current illumination duration setting.
3. Rotate the crown to select either
1
(1.5 seconds) or
3
(three seconds) for the illumination duration.
4. After the setting is the way you want, push the crown back in.
E-110
To turn an alarm and the Hourly Time Signal on or off
1. In the Alarm Mode, use
A
to select an alarm or the Hourly Time Signal.
2. When the alarm you want or the Hourly Time Signal is selected, press
C
to turn it on and off.
• The alarm on indicator (when any alarm is on), and the Hourly Time
Si
gnal on indicator (when the Hourly Time Signal is on) are shown
on the display in all modes.
To stop the alarm tone
Press any button.
To test the alarm tone
In the Alarm Mode, hold down
A
to sound the alarm tone.
Hourly time signal
on indicator
Alarm on indicator
E-109
To set an alarm time
1. In the Alarm Mode, use
A
to scroll through the alarm screens until the
one whose time you want to set is displayed.
AL1 AL2 AL3
SIG* AL5 AL4
* There is no time setting for the hourly time signal.
2. Pull out the crown.
• This will cause the hour and minute digits of the alarm time to fl ash.
3. Rotate the crown to adjust the minute setting.
• The hour setting will change in accordance with minute setting changes.
4. Press
B
.
5. Rotate the crown to adjust the hour setting.
• If you are using 12-hour timekeeping, the P (p
.m.) and A (a.m.) indicators will also appear on the
display.
6. After the settings are the way you want, push the crown back in.
• Setting an alarm time causes that alarm to turn on automatically.
Alarm ON/OFF indicator
E-108
Using the Alarm
You can set fi ve independent daily alarms. When an alarm is turned on, it
will sound for about 10 seconds each day when the time in the
Timekeeping Mode reaches the preset alarm time. This is true even if the
watch is not in the Timekeeping Mode.
You can also turn on an Hourly Time Signal, which will cause the watch
to beep twice every hour on the hour.
To enter the Alarm Mode
Use
B
to select the Alarm Mode (
ALARM
) as shown on page E-30.
• About one second after
ALARM
appears on the display, the display
will change to show an alarm name (
AL1
through
AL5
) or the
SIG
indicator. The alarm name indicates an alarm screen.
SIG
is shown
when the Hourly Time Signal screen is on the display.
• When you enter the Alarm Mode, the data you were viewing when you
last exited the mode appears fi
rst.
Alarm time
(Hour : Minutes)
Alarm name
(AL- or SIG)
E-107
To perform a countdown timer operation
A
A
A A
C
Start Stop (Resume) (Stop) Reset
• An alarm sounds for ten seconds when the end of the countdown is reached. This alarm will sound in
all modes. The countdown time is reset to its starting value automatically after the alarm ends.
To stop the alarm
Press any button.
E-106
Using the Countdown Timer
The countdown timer can be confi gured to start at a preset time, and sound an alarm when the end of the
countdown is reached.
To enter the Countdown Timer Mode
Use
B
to select the Countdown Timer Mode (
TIMER
) as shown on page
E-30.
• About one second after
TIMER
appears on the display, the display will
change to show the countdown time hours.
To specify the countdown start time
1. Enter the Countdown Timer Mode.
2. Pull out the crown.
• This will cause the current start time minutes digits to fl ash on the
digital
display.
3. Rotate the crown to adjust the minutes setting.
4. After the setting is the way you want, push the crown back in.
Current time
Countdown time
(Minutes, seconds)
E-105
To measure two fi nishes
A
C
A C
C
Start Split
First runner fi nishes.
(
SP
appears on the
digital display.)
Display time of fi rst
runner
Stop
Second runner
fi nishes.
Split release
Display time of
second runner
Reset
Note
• The Stopwatch Mode can indicate elapsed time up to 23 hours, 59 minutes, 59.99 seconds.
• An ongoing elapsed time measurement operation will continue internally even if you change to another
mode. However, if you exit the Stopwatch Mode while a split time is displayed, the split time will not be
displayed when you return to the Stopwatch Mode.
E-104
Using the Stopwatch
The stopwatch measures elapsed time, split times, and two fi nishes.
To enter the Stopwatch Mode
Use
B
to select the Stopwatch Mode (
STW
) as shown on page E-30.
To perform an elapsed time operation
A
A
A A
C
Start Stop (Resume) (Stop) Reset
To pause at a split time
A
C
C A
C
Start Split
(
SP
appears on
the digital
display.)
Split release Stop Reset
Current time 1/100 second
Hours
Seconds
Minutes
Operation Guide 5477
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