User manual

Operation Guide 3770 3771 4308 4309
3
To toggle a city code time between Standard Time and Daylight Saving Time
1. In the World Time Mode, use D to display the city code
(time zone) whose Standard Time/Daylight Saving Time
setting you want to change.
2. Hold down A to toggle Daylight Saving Time (DST
indicator displayed) and Standard Time (DST indicator
not displayed).
• Note that you cannot use the World Time Mode to
change the DST setting of the Home City code you
currently have selected in the Timekeeping Mode. See
“To change the Daylight Saving Time (summer time)
setting” for information about turning the Home City
code DST setting on and off.
• The DST indicator will appear on the display whenever
you display a city code for which Daylight Saving Time is
turned on.
• Note that the DST/Standard Time setting affects only the
currently displayed city code. Other city codes are not
affected.
DST indicator
Modules 3770 and 4308
Modules 3771 and 4309
DST indicator
Stopwatch
The stopwatch lets you measure elapsed time, split times,
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.
• 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.
1/100 second
Minutes
Seconds
Modules 3770 and 4308
Modules 3771 and 4309
1/100 second
Minutes
Seconds
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.
To measure times with the stopwatch
Countdown Timer
Yo u can set the countdown timer within a range of one to
60 minutes. An alarm sounds when the countdown
reaches zero.
• Calibration signal reception (both auto and manual) is
disabled while a countdown timer operation is in
progress.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
C.
Minutes Seconds
Modules 3770 and 4308
Modules 3771 and 4309
Minutes
Seconds
To set the countdown start time
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 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. While a setting is flashing, use D (+) and B (–) to change it.
3. Press A to exit the setting screen.
To u se 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 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.
• Press D while a countdown operation is in progress to pause it. Press D again to
resume the countdown.
• To completely stop a countdown operation, first pause it (by pressing D), and then
press A. This returns the countdown time to its starting value.
Alarm
When the alarm is turned on, the alarm sounds when the alarm time is reached. You
can also turn on an Hourly Time Signal, which will cause the watch to beep twice
every hour on the hour.
• All of the operations in this section are performed in the Alarm Mode, which you
enter by pressing C.
Hourly time signal
on indicator
Alarm on
indicator
Modules 3770 and 4308 Modules 3771 and 4309
Alarm time
(Hour : Minutes)
PM indicator
PM indicator
To s et the alarm time
1. In the Alarm Mode, hold down A until the hour setting of the alarm time starts to
flash, which indicates the setting screen.
• This operation automatically turns on the alarm.
2. Press C to move the flashing between the hour and minute settings.
3. 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).
4. Press A to exit the setting screen.
Alarm Operation
The alarm sounds at the preset time for about 10 seconds, regardless of the mode the
watch is in.
• To stop the alarm tone after it starts to sound, press any button.
To test the alarm
In the Alarm Mode, hold down D to sound the alarm.
Alarm On Indicator / Hourly Time Signal On Indicator
To turn the Daily alarm and the Hourly Time Signal on and off
In the Alarm Mode, press D to cycle through the settings shown below.
• 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.
Signal Off
Alarm Off
Signal Off
Alarm On
Signal On
Alarm Off
Signal On
Alarm On
Illumination
An LED (light-emitting diode) and light guide panel
illuminate the digital display for easy reading in the dark.
• See “Illumination Precautions” for other important
information.
To turn on illumination
In any mode, press B to illuminate the display.
• Yo u can specify 1.5 seconds or 2.5 seconds as the
illumination duration. See “To set the current digital time
and date manually” for more information.
Modules 3770 and 4308
Modules 3771 and 4309
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.
• When setting the time, you can also configure settings for the illumination duration
and the 12/24-hour format.
• All of the operations in this section are performed in the Timekeeping Mode, which
you can enter by pressing C.
▲
Press A.
PM indicator
▲
Reception date
A
Reception time
Hour : Minutes
Press D.
Last Signal
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.