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Operation Guide 4378 4379
3
Alarms
You can set three independent Daily Alarms. When an
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.
• The alarm and Hourly Time Signal operate in
accordance with the current digital time.
• The alarm number (AL1 though AL3) indicates an alarm
screen. SIG appears in place of the alarm number when
the Hourly Time Signal screen is shown.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.
Alarm number
Alarm time
(Hour : Minutes)
On/Off status
Alternate at
two-second
interval
To set an alarm time
1.In the Alarm Mode, press D to select the alarm whose
time you want to set.
AL1 AL2 AL3 SIG
2.Hold down A until the hour setting of the alarm time
starts 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).
• If you have 24-hour timekeeping selected in the Timekeeping Mode, the alarm
time is also displayed in 24-hour format.
5. Press A to exit the setting screen.
On/Off status
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, press D to select an alarm or the Hourly Time Signal.
2. When the alarm or the Hourly Time Signal you want to set is selected, press A to
turn it on (
ON
) and off (
OF
).
Stopwatch
The stopwatch lets you measure elapsed time, split times,
and two finishes.
• The display range of the stopwatch is 99 minutes, 59.99
seconds.
• The 1/100-second value appears while the elapsed time
operation is stopped or while a split time is frozen on the
display.
SecondsMinutes
Seconds
1/100
second
More than
one minute
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Split indicator
Split time
(Minutes : Seconds) 1/100 second
Split Time Screen
Elapsed Time Screen
Elapsed time
(Minutes : Seconds)
1/100 second
• The stopwatch continues to run, restarting from zero after it reaches its limit, until
you stop it.
• Exiting the Stopwatch Mode while a split time is frozen on the display clears the split
time and returns to elapsed time measurement.
• The stopwatch measurement operation continues even if you exit the Stopwatch
Mode.
• All of the operations in this section are performed in the Stopwatch Mode, which you
enter by pressing C.
To measure times with the stopwatch
D
Start Stop
Elapsed Time
➤
Re-start Clear
D ➤
Stop
D
➤
D
➤
A
Split Time
D
Start Split
➤
Split release
Clear
A
➤
Stop
A
➤
D ➤
A
Two Finishes
D
Start Split
➤
Stop
Clear
A
➤
Split release
D ➤
A
➤
A
First runner
finishes.
Display time of
first runner.
Second runner
finishes.
Display time of
second runner.
Timekeeping
Use the Timekeeping Mode to set and view the current time and date. This section
also explains how to manually set the current date and time.
• In the Timekeeping Mode, press A to cycle through the digital time screens as
shown below.
• In the Timekeeping Mode, press D to display the last signal screen. The last signal
screen shows the date and time of the last successful time calibration signal
reception.
• All of the operations in this section are performed in the Timekeeping Mode, which
you can enter by pressing C.
Last Signal Screen
Reception date
Day of week
Press A.
Day
▲
▲
▲
Receiving indicator
▲
A
2 seconds
2 seconds
2 seconds
A
Press D.
Reception Time
Date Screen
Receiving
Indicator and
Seconds Count
▲
Seconds
Hour :
Minutes
PM indicator
Current Time
Screen
Setting the Digital Time and Date Manually
Make sure you select your Home City code before you change the current time and
date settings. World Time Mode times are all displayed in accordance with the
Timekeeping Mode settings. Because of this, World Time Mode times will not be
correct if you do not select the proper Home City code before setting the time and
date in the Timekeeping Mode.
To set the current digital time and date manually
1.In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
• The second hand will move at high speed to the 12
o’clock position, where it will stop.
2.Use C to move the flashing in the sequence shown
below to select other settings.
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City code
Seconds
Hour
Minutes
12/24-Hour
Format
Month
Year
DST
Day
City Code
Do this:
Use D (east) and B (west).
Press D.
Press D.
Press D.
Use D (+) and B (–).
Use D (+) and B (–).
Screen:
To do this:
Change the city code
Toggle between Daylight Saving
Time (
ON) , Standard Time (OF),
or Auto DST (A)
Toggle between 12-hour (
) and
24-hour ( ) timekeeping
Reset the seconds to
Change the hour or minutes
Change the year
3. When the setting you want to change is flashing, use B and/or D to change it as
described below.
• See “City Code Table” for a complete list of available city codes.
4. Press A to exit the setting screen.
• The second hand will advance at high speed to the correct position in accordance
with the digital time seconds count, and resume normal movement from there.
• When you exit the setting screen, the analog hands are adjusted automatically to
match the digital time. See “Analog Timekeeping” for more information.
Note
• Auto DST (
A) can be selected only while BER, PAR, LON, or ATH is selected as the
Home City code. For more information, see “Daylight Saving Time (DST)” below.
Use D (+) and B (–).Change the month or day
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
The time calibration signals transmitted from Rugby and Mainflingen includes both
Standard Time and DST data. When the Auto DST setting is turned on, the watch
switches between Standard Time and DST (summer time) automatically in
accordance with the received time signal.
• Auto DST (
A) can be selected only while BER, PAR, LON, or ATH is selected as the
Home City code.
• The default DST setting is Auto DST (
A) whenever you select BER, PAR, LON,
or
ATH as your Home City code.
• If you experience problems receiving the time calibration signal in your area, it is
probably best to switch between Standard Time and Daylight Saving Time (summer
time) manually.
To change the Daylight Saving Time (summer time) setting
1. In the Timekeeping Mode, hold down A until the city code starts to flash, which
indicates the setting screen.
2. Press C to display the DST setting screen.
3. Use D to cycle through the DST settings in the sequence shown below.
4. When the setting you want is selected, press A to exit the setting screen.
• The DST indicator appears on the display to indicate that Daylight Saving Time is
turned on.
Auto DST (
A
) DST off (
OF
) DST on (
ON
)