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Operation Guide 3219
E-39
Countdown Timer Mode
C
Alarm Mode Stopwatch Mode
C
C
E-38
Selecting a Mode
The illustration below shows which buttons you need to press to navigate between
x
modes.
Timekeeping Mode World Time Mode
C C
E-37
Mode Reference Guide
Your watch has 5 “modes”. The mode you should select depends on what you
want to do.
To do this: Enter this mode: See:
View the current date in the Home City x
Confi gure Home City and daylight saving time (DST) x
settings
Confi gure time and date settings manually x
Perform a time calibration receive operation x
Check whether the last receive operation was x
successful
Timekeeping Mode E-41
View the current time in one of 48 cities
(29 time zones) around the globe
World Time Mode E-51
Set an alarm time Alarm Mode E-53
Use the stopwatch to measure elapsed time Stopwatch Mode E-58
Use the countdown timer Countdown Timer Mode E-61
E-36
The Home City setting reverts to the initial default of x TYO (Tokyo) whenever the
battery power level drops to Level 5 or when you have the rechargeable battery
replaced. If this happens, change the Home City to the setting you want (page
E-42).
E-35
Radio-controlled Atomic Timekeeping Precautions
Strong electrostatic charge can result in the wrong time setting.
x
Even if a receive operation is successful, certain conditions can cause the time x
setting to be off by up to one second.
The watch is designed to update the date and day of the week automatically for x
the period January 1, 2000 to December 31, 2099. Updating of the date by signal
reception will no longer be performed starting from January 1, 2100.
If you are in an area where signal reception is not possible, the watch keeps time
x
with the precision noted in “Specifi cations” (page E-76).
The receive operation is disabled under any of the following conditions. x
While power is at Level 3 ( − L) or lower (page E-15)
While the watch is in the power recovery mode (page E-17)
−
When the watch is in the function sleep state (“Power Saving”, page E-19) −
While a countdown timer operation is in progress (page E-61) −
A receive operation is cancelled if an alarm sounds while it is being performed. x
E-34
To turn auto receive on and off
In the Timekeeping Mode, press 1. D (page E-38).
Hold down 2. A until the current auto receive setting (On
or OFF) and receiving indicator start to fl ash. This is
the setting screen.
Note that the setting screen will not appear if the
x
currently selected Home City is one that does not
support time calibration reception.
Press 3. D to toggle between auto receive on (On) and
off (OFF).
Press 4. A to exit the setting screen.
Receiving indicator
On/Off status
E-33
To check the latest signal reception results
In the Timekeeping Mode, press D (page E-38).
When receive is successful, the display shows the time
x
and date that receive was successful. - : - - indicates
that none of the receive operations were successful.
To return to the Timekeeping Mode, press
x D.
Note
The receiving indicator will not be displayed if you have
adjusted the time or date setting manually since the last
receive operation.
E-32
Signal Level Indicator
During manual receive, the signal level indicator displays
the signal level as shown below.
Weak
(Unstable)
Strong
(Stable)
As you watch the indicator, keep the watch in a location
that best maintains stable reception.
Even under optimum reception conditions, it can take
x
about 10 seconds for reception to stabilize.
Note that weather, the time of day, surroundings, and x
other factors all can affect reception.
Signal level indicator
E-31
If the current reception fails but a previous reception x
(within the last 24 hours) was successful, the display
shows the receiving indicator and the ERR indicator.
If the ERR indicator only is displayed (without the
receiving indicator), it means that all of the receive
operations over the past 24 hours have failed. The
watch will return to the Timekeeping Mode without
changing the time setting if you press D or if you do
not perform any button operation for about one or
two minutes.
Note
To interrupt a receive operation and return to the
Timekeeping Mode, press D.
If there was a previously
successful reception
Receive failed
E-30
If the receive operation is successful, the reception x
date and time appear on the display, along with
the GET indicator. The watch will return to the
Timekeeping Mode if you press D or if you do not
perform any button operation for about one or two
minutes.
Receive successful