Leap seconds
A GPS signal received on or around June 1 or
December 1 each year may also include leap
second information.
Note
●
The receive operation can take as
long as 13 minutes when leap
second information is included.
●
Once leap second information is
successfully received, the watch will
not make any attempt to receive it
again until the next leap second
information is sent (the following
June 1 or December 1).
Time Adjustment Using a
Time Calibration Signal
Appropriate Signal Reception
Location
A time calibration signal can be received while
the watch is near a window.
●
Keep metal objects away from the watch.
●
Do not move the watch.
●
Do not perform any operation on the watch.
6 o’clock position
Note
●
You may experience time calibration
signal reception problems in the
areas described below.
ー
Among or near buildings
ー
While riding in a vehicle
ー
Near household appliances,
office machines, mobile phones,
etc.
ー
On a construction site, in an
airport, or any other location
where radio wave interference
occurs
ー
Near high-voltage lines
ー
In mountainous areas or behind a
mountain
Time Calibration Signal Reception
Ranges
Time calibration signal reception is supported
in the areas shown below.
●
Japan Time Calibration Signal (JJY)
500 kilometers
500 kilometers
1,000 kilometers
1,000 kilometers
Tokyo
Fukushima
Fukuoka/
Saga
●
Chinese Time Calibration Signal (BPC)
500 kilometers
1,500 kilometers
Chengdu
Shangqiu
Hong Kong
Shanghai
Beijing
Changchun
●
U.S. Time Calibration Signal (WWVB)
600 miles
(1,000 kilometers)
2,000 miles (3,000 kilometers)
Los Angeles
Denver
Fort Collins
Chicago
New York
●
U.K. (MSF) and German (DCF77) Time
Calibration Signal
The Anthorn signal is receivable within this area.
500 kilometers
1,500 kilometers
Mainflingen
Anthorn
Note
●
Even if you are within the normal
reception range of a time calibration
signal, reception may be made
impossible by the following factors:
geographic contours, weather, the
season, the time of day, wireless
noise.
Auto Time Calibration Signal
Receive
An automatic time calibration signal receive
operation is performed and the time and day
settings are adjusted between midnight and
5:00 a.m. Once a signal receive operation is
successful, no more auto receive operations
are performed that day.
The receive operation is performed only while
the watch is in the Timekeeping Mode (normal
timekeeping).
●
Normally the mode hand points to the
current day of the week.
l
30
Mode
hand
Place the watch near a window or some other
location appropriate for signal reception.
●
The second hand points to “RC” while time
calibration reception in progress.
●
When the receive operation is successful,
the time and day settings will be adjusted
automatically.
Note
●
Reception takes anywhere from
about two minutes to about 10
minutes. It can take as long as 20
minutes.
Operation Guide 5454
6