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Operation Guide 5173
Time calibration signal reception takes from two to •
seven minutes, but in some cases it can take as long
as 14 minutes. Take care that you do not perform any
button operations or move the watch during this time.
When a signal receive operation is successful, • GET
appears on the upper display and the lower display
shows the time and date of the successful operation.
The watch will adjust its time setting in accordance
with the information provided by the signal.
The watch will return to the Timekeeping Mode if you •
press A or if you do not perform any operation for
about one or two minutes.
• ERR will appear on the upper display if the receive
operation is not successful. The watch will not adjust
its time setting in this case. Press A to return to the
Timekeeping Mode.
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press any
button.
To check the latest signal reception results
In the Timekeeping Mode, press A to view the last successful receive time and date.
Press A again to return to the previous screen.
Date Hour : Minutes
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem Probable Cause What you should do
I can’t receive a
time calibration
signal.
You performed some button •
operation during auto receive.
The watch is not in the •
Timekeeping Mode or World
Time Mode.
The watch is in a location where •
the signal cannot be received for
some reason.
A countdown timer operation is in •
progress.
Radio interference is often present •
during the day time, which can
interfere with signal reception.
Perform manual receive at night •
or wait until the next auto receive
operation is performed.
Enter the Timekeeping Mode or •
World Time Mode and try again.
Enter the Countdown Timer Mode •
and stop the countdown.
Check to make sure the watch is •
in a location where it can receive
the signal.
The time setting
is incorrect
following signal
reception.
If the time is one hour off, the DST •
setting may be incorrect.
The Home City code setting is not •
correct for the area where you are
using the watch.
The home positions of the hands •
are off.
Change the DST setting to Auto •
DST.
Select the correct Home City code. •
Enter the home position •
adjustment mode and adjust the
home positions.
For further information, see “Important!” and “Radio-controlled Atomic Timekeeping •
Precautions”.
World Time
World Time digitally displays the current time in one of 48
cities (29 time zones) around the world. A simple operation
swaps your Home City with the currently selected World
Time City.
When you enter the World Time Mode, the current month •
and day of the World Time City appear first. After about
one second, the current time appears.
The times kept in the World Time Mode are synchronized •
with the time being kept in the Timekeeping Mode. If you
feel that there is an error in any World Time Mode time,
check to make sure you have the correct city selected as
your Home City. Also check to make sure that the current
time as shown in the Timekeeping Mode is correct.
Times in the World Time Mode are based on UTC offsets. •
See the “City Code Table” at the back of this manual for
information about the UTC offsets that are supported.
All of the operations in this section are performed in the World Time Mode, which •
you enter by pressing C.
Right Dial Hand
The right dial hand shows the current hour in the World Time City in all modes.
The right dial hand completes one revolution every 12 hours. •
To view the current time in another time zone
In the World Time Mode, use D to scroll through available city codes (time zones).
Holding down the button scrolls at high speed.
When the city code (time zone) you want is selected, you can press • A to display
the date. After about one second, the watch will resume regular timekeeping.
Hour : Minutes Seconds Date
Press A.
One second
Receive successful
Receive failed
Currently selected
World Time City
Current time in
World Time City
World Time hour
To toggle a city code time between Standard Time and Daylight Saving Time
In the World Time Mode, press 1. D to display the city
code (time zone) whose Standard Time/Daylight Saving
Time setting you want to change.
Hold down 2. A for about three seconds to toggle between
Daylight Saving Time (DST indicator displayed) and
Standard Time (DST indicator not displayed).
Swapping your Home City and World Time City
You can use the procedure below to swap your Home City and World Time City. This
changes your Home City to your World Time City, and your World Time City to your
Home City. This capability can come in handy when you frequently travel between two
cities in different time zones.
If your current World Time City supports receipt of a time calibration signal, making •
it your Home City enables calibration signal reception.
For information about which cities support time calibration signal reception, see “To •
specify your Home City”.
To swap your Home City and World Time City
In the World Time Mode, use 1. D to select the World Time City you want.
Hold down 2. A and B until the watch beeps.
This will make the World Time City you selected in step 1 your Home City, and •
cause the hour and minute hands to move to the current time in that city. At the
same time, it will change the Home City you had selected prior to step 2 your
World Time City, and cause the content of the upper and lower displays to change
accordingly.
After swapping the Home City and World Time City, the watch stays in the World •
Time Mode with the city that was selected as the Home City prior to step 2 now
displayed as the World Time City.
Stopwatch
The stopwatch lets you measure elapsed time, split
times, and two finishes.
The digital display range of the stopwatch is 23 hours, •
59 minutes, 59.99 seconds.
The stopwatch continues to run, restarting from zero •
after it reaches its limit, until you stop it.
The stopwatch measurement operation continues •
even if you exit the Stopwatch Mode.
Exiting the Stopwatch Mode while a split time is •
frozen on the display clears the split time and returns
to elapsed time measurement.
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
Elapsed Time
D
D D
D
A
Start Stop Re-start Stop Clear
Split Time
D
A A
D
A
Start Split
(SPL indicator
displayed)
Split release Stop Clear
Two Finishes
D
A D
A
A
Start Split
First runner
finishes.
Display time of
first runner.
Stop
Second runner
finishes.
Split release
Display time of
second runner.
Clear
Countdown Timer
You can set the countdown timer start time within a range
of one minute to 60 minutes. An alarm sounds when the
countdown reaches zero.
You also can select auto-repeat, which automatically •
restarts the countdown from the original value you set
whenever zero is reached.
All of the operations in this section are performed in the •
Countdown Timer Mode, which you enter by pressing
C.
To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
When the end of the countdown is reached and auto-repeat is turned off, the •
alarm will sound for 10 seconds or until you stop it by pressing any button. The
countdown time is reset to its starting value automatically after the alarm stops.
When auto-repeat is turned on, the countdown will restart automatically without •
pausing when it reaches zero. The alarm sounds to signal when the countdown
reaches zero. The countdown is repeated up to eight times, and then stops.
The number of the current repeat (1 to 8) is shown in the lower display. •
The countdown timer measurement operation continues even if you exit the •
Countdown Timer Mode.
To stop a countdown timer operation completely, first pause it (by pressing • D),
and then press A. This returns the countdown time to its starting value.
DST indicator
SPL indicator
Hours
1/100 second
Minutes
Seconds
Number of the current
repeat
Start time (minutes)
Minutes
Seconds
Auto-repeat on indicator