Leap Second Reception; Time Adjustment Using A Time Calibration Signal; Time Calibration Signal Reception Ranges - Casio Oceanus OCW-G1000 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.
Note
The time information receive
●
operation takes anywhere from
about seven seconds to one minute.
The receive operation can take as
●
long as 13 minutes when leap
second information is included.

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
It can take as long as 13 minutes to
●
complete leap second information
reception.
Leap second information receive is
●
repeated until information receipt is
complete.
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.
Operation Guide 5412
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
ー
While riding in a vehicle
ー
Near household appliances,
ー
office machines, mobile phones,
etc.
On a construction site, in an
ー
airport, or any other location
where radio wave interference
occurs
Near high-voltage lines
ー
In mountainous areas or behind a
ー
mountain
Time Calibration Signal Reception
Ranges
Time calibration signal reception is supported
in the areas shown below.
Japan Time Calibration Signal (JJY)
●
500 kilometers
Fukuoka/
Saga
500 kilometers
Tokyo
1,000 kilometers
Chinese Time Calibration Signal (BPC)
●
1,500 kilometers Changchun
500 kilometers
Chengdu
Shangqiu
U.S. Time Calibration Signal (WWVB)
●
600 miles
(1,000 kilometers)
Denver
Los Angeles
Fort Collins
2,000 miles (3,000 kilometers)
U.K. (MSF) and German (DCF77) Time
●
Calibration Signal
Anthorn
500 kilometers
The Anthorn signal is receivable within this area.
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.
1,000 kilometers
Fukushima
Beijing
Shanghai
Hong Kong
New York
Chicago
1,500 kilometers
Mainflingen
5