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Operation Guide 5015
2
* The areas covered by the MOW, HKG, BJS, HNL, and ANC city codes are quite
far from the time calibration signal transmitters, and so certain conditions may
cause problems with signal reception.
Approximate Reception Ranges
Anthorn
Mainflingen
500 kilometers
Fort Collins
600 miles
(1,000 kilometers)
Fukuoka/Saga
500 kilometers
Fukushima
500 kilometers
U.K. and German Signals
U.S. Signal
Japan Signal
1,500 kilometers
2,000 miles
(3,000 kilometers)
1,000 kilometers
1,000 kilometers
• Signal reception may not be possible at the distances noted below during certain
times of the year or day. Radio interference may also cause problems with reception.
Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310
miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
• Even when the watch is within the reception range of the transmitter, signal
reception will be impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
Your Home City Auto Receive Start Times
123456
LIS, LON
MAD, PAR, ROM,
BER, STO
Standard Time
Daylight
Saving Time
Standard Time
Daylight
Saving Time
1:00 am
2:00 am
2:00 am
3:00 am
2:00 am
3:00 am
3:00 am
4:00 am
3:00 am
4:00 am
4:00 am
5:00 am
4:00 am
5:00 am
5:00 am
Midnight
next day
5:00 am
Midnight
next day
Midnight
next day
1:00 am
next day
Midnight
next day
1:00 am
next day
1:00 am
next day
2:00 am
next day
About Auto Receive
The watch receives the time calibration signal automatically up to six times a day.
When any auto receive is successful, the remaining auto receive operations are not
performed. The reception schedule (calibration times) depends on your currently
selected Home City, and whether standard time or Daylight Saving Time is selected
for your Home City.
• The display of the watch is blank while an auto receive operation is in progress.
ATH
MOW
HKG, BJS, TPE,
SEL, TYO
HNL, ANC, YVR,
LAX, YEA, DEN,
MEX, YWG, CHI,
MIA, YTO, NYC,
YHZ, YYT
Standard Time
Daylight
Saving Time
Standard Time
Daylight
Saving Time
Standard Time
Standard Time
Daylight
Saving Time
3:00 am
4:00 am
4:00 am
5:00 am
Midnight
Midnight
4:00 am
5:00 am
5:00 am
Midnight
next day
1:00 am
1:00 am
5:00 am
Midnight
next day
Midnight
next day
1:00 am
next day
2:00 am
2:00 am
Midnight
next day
1:00 am
next day
1:00 am
next day
2:00 am
next day
3:00 am
3:00 am
1:00 am
next day
2:00 am
next day
2:00 am
next day
3:00 am
next day
4:00 am
4:00 am
2:00 am
next day
3:00 am
next day
3:00 am
next day
4:00 am
next day
5:00 am
5:00 am
Note
• When a calibration time is reached, the watch will receive the calibration signal only
if it is in either the Timekeeping Mode or World Time Mode. Reception is not
performed if a calibration time is reached while you are configuring settings.
• Auto receive of the calibration signal is designed to be performed early in the
morning, while you sleep (provided that the Timekeeping Mode time is set correctly).
Before going to bed for the night, remove the watch from your wrist, and put it in a
location where it can receive the signal easily.
• The watch receives the calibration signal for two to seven minutes every day when
the time in the Timekeeping Mode reaches each of the calibration times. Avoid
performing any button operation within seven minutes before or after any one of the
calibration times. Doing so can interfere with correct calibration.
• Remember that reception of the calibration signal depends on the current time in the
Timekeeping Mode. The receive operation will be performed whenever the display
shows any one of the calibration times, regardless of whether or not the displayed
time actually is the correct time.
• Calibration signal reception is disabled while a countdown timer operation is
in progress.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received. For
best reception, be sure to keep the watch in a location where signal strength is
strongest.
• Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal receive operations.
• Even in an area where signal strength is strong, it takes about 10 seconds for signal
reception to stabilize enough for the receiving indicator to indicate signal strength.
Weak
(Level 0)
Strong
(Level 3)
Receiving indicator
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To perform manual receive
1.Enter the Timekeeping Mode.
2.Place the watch on a stable surface so its 12 o’clock
side is facing towards a window.
3.Hold down D for about two seconds until the Receiving
Indicator appears on the display.
• Time calibration signal reception takes from two to 14
minutes. Take care that you do not perform any button
operations or move the watch during this time.
• If the receive operation is successful, the reception date
and time appear on the display, along with the GET
indicator.
The watch will enter the Timekeeping Mode if you press
D or if you do not perform any button operation for
about one or two minutes.
Receiving indicator
Receiving
Receive successful
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Receive time
Receive date
• If the current reception fails, the display will show the
ERR indicator.
The watch will enter 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.
Receive failed
To turn auto receive on and off
1.In the Timekeeping Mode, press D to display the Last
Signal screen.
2.Hold down A until the current auto receive setting (ON
or OF) starts to flash. This is the setting screen.
• Note that the setting screen will not appear if the
currently selected Home City is one that does not
support time calibration reception.
3.Press D to toggle auto receive on (ON) and off (OF).
4.Press A to exit the setting screen.
• For information about city codes that support signal
receive, see “To specify your Home City”.
On/Off status
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To check the latest signal reception results
In the Timekeeping Mode, press D to display the Last
Signal screen.
• When receive is successful, the display will show the
time and date that receive was successful. - - : - -
indicates that none of the reception operations were
successful.
• To return to the Timekeeping Mode, press D.
Receive time
Receive date
Problem
Cannot
perform
manual
receive.
The time
setting is
incorrect
following
signal
reception.
Probable Cause
• The watch is not in the Timekeeping
Mode.
• Your current Home City is not one of the
following:
LIS, LON, MAD, PAR, ROM, BER, STO,
ATH, MOW, HKG, BJS, TPE, SEL, TYO,
HNL, ANC, YVR, LAX, YEA, DEN, MEX,
YWG, CHI, MIA, YTO, NYC, YHZ, or YYT
• 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 position of the hands is off.
What you should do
• Enter the Timekeeping Mode and
try again.
• Select LIS, LON, MAD, PAR, ROM,
BER, STO, ATH, MOW, HKG, BJS,
TPE, SEL, TYO, HNL, ANC, YVR,
LAX, YEA, DEN, MEX, YWG, CHI,
MIA, YTO, NYC, YHZ, or YYT as
your Home City.
• Change the DST setting to Auto
DST.
• Select the correct Home City code.
• Enter the Hand Setting Mode and
adjust the home position.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
World Time
The World Time Mode digitally displays the current time in
48 cities (29 time zones) around the world.
• If the current time shown for a city is wrong, check your
Home City time settings and make the necessary
changes.
• The watch will perform a signal reception even if it is in
the World Time Mode when a calibration time is
reached. If this happens, the World Time Mode time
settings will be adjusted in accordance with the
Timekeeping Mode’s Home City time.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
Current time in
selected city
To view the time in another city
While in the World Time Mode, press D to scroll through the city codes (time zones)
to the east.
• For full information on city codes, see the “City Code Table”.
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.
DST indicator
• 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.