Operation Guide 2582 2586
1
About This Manual
•Button operations are indicated using the letters shown
in the illustration.
•Each section of this manual provides you with the
information you need to perf orm operations in each
mode. Further details and technical information can be
found in the “Reference” section.
(Light)
Date Alert ModeAlarm Mode
▲
▲
Stopwatch Mode
▲
General Guide
•Press C to change from mode to mode.
•In any mode, press L to illuminate the displa y .
Timekeeping Mode
▲
Time Zone Mode
▲
Press C.
Timekeeping
This watch automatically adjusts its time setting in accordance with the time
calibration signal (Call Sign: DCF77) transmitted from Mainflingen, Germany . Y ou can
also perform a manual procedure to set the time and date, when necessary .
Important!
•Before using the w atch for the first time after purchasing it, use the procedure under
“T o specify your time zone” to specify your time z one, and then perf orm the
procedure under “T o trigger a calibration signal receive oper ation manually”.
•Time calibration reception is limited to specific geographic areas in West Europe .
Setting the Time and Date
There are three different methods you can use to set the w atch’s time and date .
•Auto receiv e of the time calibration signal
•Manual receive of the time calibration signal
•Manual setting without using the time calibration signal
No matter which method you use, y ou must specify your time zone first (see below).
Specifying Y our Time Zone
Use the Time Zone Mode to specify y our current time zone. If you move to a diff erent
time zone either inside or outside of the W est Europe, simply change the time zone
setting and the watch adjusts its current time and date settings accordingly .
•See the “Time Zone T able” for inf ormation about time zones and applicable cities .
T o specify y our time zone
1. Use C to enter the Time Zone Mode.
2. Hold down B until the current time zone diff erential
value starts to flash, which indicates the setting screen.
•The time zone diff erential value indicates the number
of hours difference in time between the currently
selected time zone and UTC (Universal Time
Coordinated) in Greenwich, England.
Time zone differential value
3. Use A (+) and D (–) to change the time zone differential value .
4. Press B to exit the setting screen.
•If you are in an area that corresponds to the German time zone (1h ) but does not
follow summer time (Da ylight Saving Time or DST), select the time zone to the
west of the German zone. This means you would select the time z one with a time
diff erential of 0h instead of 1h in order to cancel the effect of summer time (DST).
Time Calibration Signal Reception
Removing the watch from y our wrist and positioning it as shown in the illustrations
below helps to optimize signal reception.
•If your w atch has a resin band, pass the end of the band through the band loop and
place the watch on a stable surf ace.
Note
See “Time Calibration Signal Reception Precautions” f or impor tant information about
time calibration signal reception.
Resin band Metal band
Pass through band loop .
T o trigger a calibration signal receive operation manually
1. Use C to enter the Timekeeping Mode .
2. Place the watch on a stable surf ace to its top (12
o’clock side) is f acing in the general direction of
Mainflingen, Germany .
•This puts the watch in the optimum position f or time
calibration signal reception.
3. Hold down D f or about three seconds, until the receiv e
indicator starts to flash, which indicates that signal
reception has started.
•Signal reception takes from two to five min utes. T ake care that you do not mo ve
the watch during this time.
•The receive indicator stops flashing and remains on the displa y when signal
reception is complete. The receive indicator remains on the displa y for three da ys
after a successful signal reception. The receive indicator does not appear if signal
reception is unsuccessful for some reason.
Receive indicator
•If the receive indicator does not appear when you hold down D, it means that
signal receive is turned off. Use the procedure under “T o turn signal receive on
and off ” to turn it on.
•T o interrupt a receive operation, hold down D f or about three seconds.
Switching between Standard Time and Summer Time
The time calibration signal sent from Mainflingen includes standard time and summer
time information. This means that if you are in an area that s witches between summer
time and standard time on the same days as Germany , you do not need to make any
manual adjustments.
When you are in an area that does not correspond to German summer time and
standard time, y ou can use the following procedure to turn on summer time (Daylight
Saving Time or DST) and advance the current time by one hour, when necessary .
•Note that not all countries or local areas use summer time.
•If the watch receives a time calibration signal in an area that corresponds to the
German time zone, the time is adjusted in accordance with the time calibration
signal data. If you are in an area outside of Germany that corresponds to the
German time zone but does not follow summer time , you need to use the procedure
under “T o specify your time zone” to select the time zone to the west of the time
zone where you are located.
T o switch between standard time and summer time
1. Use C to enter the Time Zone Mode.
•Note that you cannot switch manually betw een
standard time and summer time while the time zone
differential setting is 0h, 1h , or 2h , and signal receiv e
is turned on. In this case, the DST On/Off setting does
not appear in step 3 below . Be sure to turn signal
receive off before s witching between standard time
and summer time while the time zone differential
setting is 0h, 1h , or 2h.
2. Hold down B until the current time zone diff erential
value starts to flash, which indicates the setting screen.
3. Press C twice to display the DST On/Off setting screen.
• Each press of C mov es the flashing in the sequence shown below to select other
settings.
DST On/Off
Time Zone
Differential Signal Receiv e
On/Off
4. Press A or D to toggle between standard time (oFF) and summer time ( on ).
•The DST indicator is on the display while summer time is turned on.
5. Press B to exit the setting screen.
•The summer time setting affects all time zones .
•The summer time setting does not affect UTC .
Calibration Signal A uto Receive
This watch is designed so that timek eeping accuracy is directly propor tional to the
number of successful signal receptions the watch is ab le to receive (automatic gain
control). Because of this, we recommend that y ou always k eep auto receive turned on
when you are within range of the Mainflingen transmitter .
•Auto receiv e is performed at 2:00AM German time each day , regardless of the
Timekeeping Mode time shown on the w atch’s displa y . It is best to remove the watch
from your wrist and put it in a location where it can easily receive the signal prior to
2:00AM German time.
•The auto receive operation is perf ormed everyday no matter what mode the w atch is
in.
•This watch is shipped from the factory with auto receive turned on. Y ou can change
the auto receive setting using the procedure under “T o turn signal receive on and
off ”.
T o turn signal receive on and off
1. Use C to enter the Time Zone Mode.
2. Hold down B until the current time zone diff erential
value starts to flash, which indicates the setting screen.
3. Press C once to displa y the Signal Receive On/Off
setting screen.
4. Press A or D to toggle betw een Signal Receive (auto
and manual) on (on ) and off ( oFF ).
5. Press B to e xit the setting screen.
•If you use the above procedure to turn on signal receiv e,
the watch performs a signal receive oper ation (indicated
by the flashing icon) when you e xit the setting screen in
step 5.
•T o stop an ongoing signal receive operation, enter the
Timekeeping Mode and then hold down D f or about
three seconds.
MO0306-EB