Operation Manual

Auto GPS Signal Receive
When the conditions below are satisfied, the
watch will
automatically receive a GPS signal.
If any time information receive is successful,
the watch will no longer attempt to receive a
signal for the rest of the day.
Time information
Watch is in the Timekeeping Mode (normal
timekeeping).
Current
time
is between 6:00 a.m. and 10:00
p.m.
Light (near a window on a clear day)
continually shining on the face of the watch
for about one to two minutes.
Time calibration signal reception was not
successful during the previous evening.
Position information
Watch is in the Timekeeping Mode (normal
timekeeping).
The watch exited the Airplane Mode.
Current
time
is between 6:00 a.m. and 10:00
p.m.
Light (near a window on a clear day)
continually shining on the face of the watch
for about one to two minutes.
Note
The time information receive
operation takes anywhere from
about seven
seconds to one minute,
while position information
acquisition takes anywhere from
about 30 seconds to two minutes.
The receive operation can take as
long as 13 minutes when leap
second information is included.
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.
12 o'clock
Note
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,
office 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
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
To k y o
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.
Operation Guide 5412
5