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Operation Guide 3054
• 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.
Rugby (England) transmitter: 500 kilometers (310 miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
• 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.
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.
Your Home City
Auto Receive Start Times
1
HNL, ANC, YVR,
Standard Time
LAX, YEA, DEN,
MEX, YWG, CHI,
Daylight
Midnight
MIA, YTO, NYC,
Saving Time
YHZ, YYT
LIS, LON
Standard Time
1:00 am
Daylight
2:00 am
Saving Time
MAD, PAR, ROM,
Standard Time
2:00 am
BER, STO
Daylight
3:00 am
Saving Time
ATH
Standard Time
3:00 am
Daylight
4:00 am
Saving Time
MOW
Standard Time
4:00 am
Daylight
5:00 am
Saving Time
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 everyday 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.
Weak
(Level 0)
Receiving indicator
• 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.
• Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal receive operations.
• Following reception of the time calibration signal and calibration of the watch's time
setting, the Level 3 receiving indicator will remain on the display in all modes. The
Level 3 receiving indicator will not be displayed if signal reception was unsuccessful
or after you adjust the current time setting manually.
• The Level 3 receiving indicator is displayed only when the watch is able to receive
both time and date data successfully. It does not appear when only time data is
received.
• The Level 3 receiving indicator indicates that at least one of the auto calibration
signal receive operations was successful. Note, however, that the Level 3 receiving
indicator is cleared from the display when the first auto receive operation of the day
is performed.
To perform manual receive
1. Place the watch on a stable surface so its top (12
o'clock side) is facing towards a window.
2. In the Timekeeping Mode, hold down D for about two
seconds until RC! appears on the display.
• Time calibration signal reception takes from two to
seven minutes. Take care that you do not perform any
button operations or move the watch during this time.
• After signal reception is complete, the display of the
Receiving indicator
watch changes to the Last Signal screen.
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press D.
• If the receive operation is unsuccessful, the message
for about one or two minutes. After that, the watch returns to the Timekeeping Mode.
• You can also change from the Last Signal or
timekeeping screen by pressing D.
• Calibration signal reception is disabled while a countdown timer operation is in
progress.
2
3
4
5
6
1:00 am
2:00 am
3:00 am
4:00 am
5:00 am
2:00 am
3:00 am
4:00 am
5:00 am
Midnight
next day
3:00 am
4:00 am
5:00 am
Midnight
1:00 am
next day
next day
3:00 am
4:00 am
5:00 am
Midnight
1:00 am
next day
next day
4:00 am
5:00 am
Midnight
1:00 am
2:00 am
next day
next day
next day
4:00 am
5:00 am
Midnight
1:00 am
2:00 am
next day
next day
next day
5:00 am
Midnight
1:00 am
2:00 am
3:00 am
next day
next day
next day
next day
5:00 am
Midnight
1:00 am
2:00 am
3:00 am
next day
next day
next day
next day
Midnight
1:00 am
2:00 am
3:00 am
4:00 am
next day
next day
next day
next day
next day
Strong
(Level 3)
ERR
appears on the display
ERR
screen to the normal
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 receiving indicator and current
auto receive setting (
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/Off Status
4. Press A to exit the setting screen.
• For information about city codes that support signal receive, see "To specify your
Home City".
To display the Last Signal screen
In the Timekeeping Mode, press D to display the Last Signal screen (indicated by
GET
). The Last Signal screen shows the date and time of the last successful time
calibration signal reception.
Current Time and Date screen
Month – Day
Year
Press D.
PM indicator
Day of week
Home Time
(Hour : Minutes Seconds)
Signal Reception Troubleshooting
Check the following points whenever you experience problems with calibration signal
reception.
Problem
Probable Cause
• The watch is not in the Timekeeping Mode.
Cannot perform
• Your current Home City is not one of the
manual receive.
following city codes:
HNL, ANC, YVR, LAX, YEA, DEN,
MEX, YWG, CHI, MIA, YTO, NYC, YHZ,
YYT, LIS, LON, MAD, PAR, ROM, BER,
STO, ATH, or MOW.
• The countdown timer is running.
• You changed the time setting manually.
Auto receive is
• The watch was not in the Timekeeping
turned on, but the
Level 3 receiving
or World Time Mode, or you performed
indicator does
some button operation during the auto
not appear on the
receive operation.
• Even if receive is successful, the Level
display.
3 receiving indicator disappears every
day when the first auto receive
operation of the day is performed.
• Time data (hour, minutes, seconds) only
was received during the last receive
operation. The Level 3 receiving
indicator appears only when time data
and date data (year, month, day) are
both received.
• If the time is one hour off, the DST
Time setting is
incorrect
setting may be incorrect.
• The Home City code setting is not
following signal
reception.
correct for the area where you are using
the watch.
• For further information, see "Important!" under "Time Calibration Signal Reception"
and "Radio-controlled Atomic Timekeeping Precautions".
World Time
The World Time Mode shows you the current time in 48
Timekeeping
UTC
cities (29 time zones) around the world.
Mode time
differential
• If the current time shown for a city is wrong, check your
Home City time settings and make the necessary
changes.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
City code
Current time in selected city
To view the time in another city
While in the World Time Mode, press D to scroll eastward through the city codes
(time zones).
• 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
DST indicator
(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).
• The DST indicator will appear 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.
or
) start to flash. This is
) and off (
).
Last Signal Screen
Receive date
Receive time
What you should do
• Enter the Timekeeping Mode
and try again.
• Select HNL, ANC, YVR, LAX,
YEA, DEN, MEX, YWG, CHI,
MIA, YTO, NYC, YHZ, YYT,
LIS, LON, MAD, PAR, ROM,
BER, STO, ATH, or MOW as
your Home City.
• Stop the countdown timer and
try again.
• Perform manual signal receive
or wait until the next auto
signal receive operation is
performed.
• Check to make sure the
watch is in a location where it
can receive the signal.
• Change the DST setting to
Auto DST.
• Select the correct Home City
code.
2
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