Operation Guide This guide is for printing.
Operation Guide 3476
EN-29
Signal Reception Troubleshooting
Check the following points whenever you experience problems with calibration signal
reception.
Problem Probable Cause What you should do
Cannot perform
manual receive.
x The watch is not in the Timekeeping Mode.
x Your current Home City is not one of the
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, MOW, HKG, BJS, TPE, SEL, and
TYO.
x The countdown timer is running.
x Enter the Timekeeping
Mode and try again (page
EN-26).
x Select one of the cities to
the left as your Home City
(page EN-12).
x Stop the countdown timer
(page EN-34) and try again.
Auto receive is
turned on, but the
Level 3 receiving
indicator does
not appear on the
display.
x You changed the time setting manually.
x The watch was not in the Timekeeping or
World Time Mode, or you performed some
button operation during the auto receive
operation.
x Perform manual signal
receive or wait until the
next auto signal receive
operation is performed.
EN-28
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.
D
Current Time and Date Screen Last Signal Screen
Month – Day
Day of week
Home Time (Hour : Minutes Seconds)
Receive time
YearPM indicator
Receive date
EN-27
x You can also change from the Last Signal or ERR screen to the normal timekeeping
screen by pressing D.
x Calibration signal reception is disabled while a countdown timer operation is in
progress.
To turn auto receive on and off
1. In the Timekeeping Mode, press D to display the Last
Signal screen (page EN-28).
2. Hold down A until the receiving indicator and current
auto receive setting (ON or OFF) start to flash. This is
the setting screen.
x 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 (OFF).
4. Press A to exit the setting screen.
x For information about city codes that support signal receive, see “To specify your
Home City” (page EN-12).
On/Off Status
EN-26
To perform manual receive
1. Place the watch on a stable surface so its top
(12o’clock side) is facing towards a window (page
EN-16).
2. In the Timekeeping Mode, hold down D for about two
seconds until RC! appears on the display.
x Time calibration signal reception takes from two to ten
minutes, but in some cases it can take as long as 20
minutes. Take care that you do not perform any button
operations or move the watch during this time.
x After signal reception is complete, the display of the
watch changes to the Last Signal screen (page EN-28).
Note
x To interrupt a receive operation and return to the Timekeeping Mode, press D.
x If the receive operation is unsuccessful, the message ERR appears on the display
for about one or two minutes. After that, the watch returns to the Timekeeping
Mode.
Receiving indicator
EN-25
x 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.
x 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.
x 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.
EN-24
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.
Receiving indicator
Weak
(Level 0)
Strong
(Level 3)
x 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.
x Use the receiving indicator as a guide for checking signal strength and for finding
the best location for the watch during signal receive operations.
EN-23
Note
x 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.
x Auto receive of the calibration signal is designed to be performed between midnight
and 5:00 a.m. , 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.
x The watch receives the calibration signal for two to ten minutes everyday when
the time in the Timekeeping Mode reaches each of the calibration times. Avoid
performing any button operation within ten minutes before or after any one of the
calibration times. Doing so can interfere with correct calibration.
x 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.
x Calibration signal reception is disabled while a countdown timer operation is in
progress.
EN-22
Your Home City
Auto Receive Start Times
123456
ATH
Standard Time 3:00 am 4:00 am 5:00 am
Midnight
*
1:00 am
*
2:00 am
*
Daylight Saving
Time
4:00 am 5:00 am
Midnight
*
1:00 am
*
2:00 am
*
3:00 am
*
MOW
Standard Time 4:00 am 5:00 am
Midnight
*
1:00 am
*
2:00 am
*
3:00 am
*
Daylight Saving
Time
5:00 am
Midnight
*
1:00 am
*
2:00 am
*
3:00 am
*
4:00 am
*
HKG, BJS, TPE,
SEL, TYO
Standard Time Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
* Next day
EN-21
Your Home City
Auto Receive Start Times
123456
HNL, ANC,
YVR, LAX, YEA,
DEN, MEX,
YWG, CHI, MIA,
YTO, NYC,
YHZ, YYT
Standard Time
Daylight Saving
Time
Midnight 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
LIS, LON
Standard Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
Midnight
*
Daylight Saving
Time
2:00 am 3:00 am 4:00 am 5:00 am
Midnight
*
1:00 am
*
MAD, PAR,
ROM, BER,
STO
Standard Time 2:00 am 3:00 am 4:00 am 5:00 am
Midnight
*
1:00 am
*
Daylight Saving
Time
3:00 am 4:00 am 5:00 am
Midnight
*
1:00 am
*
2:00 am
*
EN-20
x 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 (310miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
x Even when the watch is within the reception range of a transmitter, signal reception
may be impossible at times due to the effects of geographic contours, structures,
weather, the season of the year, the time of day, radio interference, etc. Note that
the signal becomes weaker at distances of approximately 500 kilometers from the
transmitter, which means that the influence of the conditions listed above becomes
even greater.
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.