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Operation Guide 5410
E-39
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.
− Mainfl ingen (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)
− Shangqiu (China) transmitter: 500 kilometers (310 miles)
E-38
Approximate Reception Ranges
Japanese Signals Chinese Signal
1,500 kilometers
Changchun500 kilometers
Beijing
Shangqiu
Shanghai
Chengdu
Hong Kong
UK and German Signals North American Signal
Anthorn
500 kilometers
1,500 kilometers
Mainfl ingen
The Anthorn signal is receivable
within this area.
Fukushima
500 kilometers
1,000 kilometers
Fukuoka/
Saga
Tokyo
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
DenverLos Angeles
Fort Collins
Chicago
New York
E-37
x Reception normally takes anywhere from about two to ten minutes, but it can take as long as
20 minutes.
x When the receive operation is successful, the time and date settings will be adjusted automatically.
x Once a signal receive operation is successful, no more Auto Receive operations are performed that
day. See “To check receive operation results (acquisition results)” (page E-40).
Time Calibration Signal Reception Ranges and Conditions
If your Home City (Time Zone) setting is this:
The watch can receive the signal from the transmitter
located here:
LONDON (LON), PARIS (PAR), ATHENS (ATH) Anthorn (England), Mainfl ingen (Germany)
HONG KONG (HKG) Shangqiu City (China)
TOKYO (TYO) Fukushima (Japan), Fukuoka/Saga (Japan)
NEW YORK (NYC), CHICAGO (CHI),
DENVER (DEN), LOS ANGELES (LAX)
Fort Collins, Colorado (United States)
E-36
Timekeeping (by Time Calibration Signal)
Appropriate Signal Reception Location (Time Calibration Signal)
x Keep the watch away from metal and position it so its
12 o’clock side is facing a window. Avoid moving the
watch as much as possible and do not perform any watch
operations while a signal receive operation is in progress.
x You may experience time calibration signal reception
problems in the areas described below.
− Among or near buildings
− While riding in a vehicle
− Near household appliances, offi ce machines, mobile
phones, etc.
− On a construction site, in an airport, or any other location where radio wave interference occurs
− Near high-voltage lines
− In mountainous areas or behind a mountain
Normal Daily Time Adjustment (Time Calibration Signal)
Time Calibration Signal Auto Receive
A time calibration signal receive operation will be performed automatically if the watch’s current Home City
(time zone) is one that supports reception.
x Leave the watch in a location that is appropriate for time calibration signal reception between the hours
of midnight and 5:00 a.m. See “Appropriate Signal Reception Location (Time Calibration Signal)” (page
E-36).
x The
1
Second Hand will point to RC while time calibration signal reception is in progress.
or
12 o’clock
E-35D
Leap Second Reception
GPS signal reception each year on June 1 or later and on December 1 or later also receives leap second
information.
Note
x It can take as long as 13 minutes to complete leap second information reception.
x Leap second information receive is repeated until information receipt is complete.
x Once leap second information receive is complete, the watch will not make any attempt to receive it
again until the following June 1 or December 1.
E-34 D
Triggering an Immediate Time Adjustment Operation
Receiving GPS Time Information
Perform this operation when you suspect that the time normally indicated by the watch is not correct.
x This operation requires large amounts of power. Perform it only when necessary.
Perform this operation in the Timekeeping Mode (not in the Airplane Mode). See “Mode Reference
Guide” (page E-42).
1. Move to a location appropriate for signal reception and orient the watch so its display is pointed straight
up at the sky. See “Appropriate Signal Reception Location (GPS Signal)” (page E-29).
2. Hold down B for at least one second. Release the button as soon as the
1
1
Second Hand points to T (TIME).
x The time information receive operation starts when the 1
1
Second Hand
moves to T (TIME). Even if the 1
1
Second Hand is pointed at Y (YES) or N
(NO), keep B depressed until it moves to T (TIME).
x Reception normally takes anywhere from seven seconds to one minute. It
can take as long as 13 minutes when leap second information is included.
See “Leap Second Reception” (page E-35).
x If the receive operation is successful, the
1
1
Second Hand will move to Y
(YES) and then the time and date settings will change in accordance with
the Home City (Time Zone) and summer time settings.
x If the receive operation fails, the
1
1
Second Hand will move to N (NO) and
then normal timekeeping will resume with settings unchanged.
30
1
E-33E
GPS signal time information is received automatically whenever all of the conditions described below are
satisfi ed.
x The current time is between 6:00 a.m. and 10:00 p.m.
x The face of the watch has been exposed for about one or two minutes to continuous light equivalent to
the brightness near a window on a clear day.
x All time calibration signal receive operations performed during the previous night were unsuccessful.
x Time information reception takes anywhere from about seven seconds to one minute. It can take as
long as 13 minutes when leap second information is received. See “Leap Second Reception” (page E-35).
x When the receive operation is successful, the time and date settings will be adjusted automatically.
x Once a signal receive operation is successful, no more Auto Receive operations are performed that
day. See “To check receive operation results (acquisition results)” (page E-40).
E-32 E
Note
x You may experience location information acquisition problems when you are in the vicinity of a time
zone borderline. The watch’s time and date settings will not be correct if the Home City (Time Zone)
that is automatically set after position information acquisition is not right for your location. Perform the
position information acquisition operation in a representative city in your time zone or in a location that
is well within the time zone. Or you can perform a time information receive operation to change time
and date settings after confi
guring Home City (Time Zone) and summer time setting manually (using
button and crown operations).
See “To confi gure Home City (time zone) settings” (page E-59), “STD/DST Switching” (page E-60), and
“Receiving GPS Time Information” (page E-34).
Normal Daily Time Adjustment (GPS Signal)
GPS Signal Auto Receive
GPS signal time information is received automatically in accordance with your current Home City (time
zone) setting.
Perform the signal receive operation in the Timekeeping Mode (not in the Airplane Mode). See “Mode
Reference Guide” (page E-42).
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