Time Calibration Signal Reception Ranges; Auto Time Calibration Signal Receive; Manual Time Signal Receive - Casio 5665 Operation Manual

Time Calibration Signal Reception
Ranges
Japan (JJY)
●
The Japan time signal radio stations are
located on Mt. Otakadoya in Fukushima and
Mt. Hagane in Fukuoka/Saga.
The reception range of the Japanese time
signals is approximately 1,000 km from each
transmission station.
China (BPC)
●
The China time signal radio station is located
in Shangqiu, Henan Province, China.
The reception range of the Chinese time
signal is approximately 1,500 km from the
transmission station.
United States (WWVB)
●
The United States time signal radio station is
located in Fort Collins, Colorado.
The reception range of the U.S. time signal is
approximately 3,000 km from the transmission
station.
U.K. (MSF)/Germany (DCF77)
●
The U.K. time signal radio station is located in
Anthorn, Cumbria.
The German time signal radio station is
located in Mainflingen, southeast of Frankfurt.
The reception range of the U.K. and German
time signals is approximately 1,500 km from
each transmission station.
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.
Watch Operation Guide 5665
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.
Getting Ready
Enter the World Time Mode or the Stopwatch
Mode with the stopwatch reset to all zeros.
Navigating Between Modes
l
Measuring Elapsed Time
l
Place the watch near a window or some other
location appropriate for signal reception.
The second hand points to [R] while the
●
receive operation 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.
If the watch connects with a phone and
●
adjusts its time setting, the watch will
not perform auto receive of a time
calibration signal for the rest of that day
or the next day.

Manual Time Signal Receive

1.
Place the watch near a window or some
other location appropriate for time signal
reception.
2.
Hold down (B) for at least 0.5 seconds until
the second hand points to [R].
This indicates that the receive operation
has started. After the receive operation is
complete, the watch's time and day
settings will be adjusted accordingly.
30
Note
The receive operation takes anywhere
●
from about two minutes to about 10
minutes. It can take as long as 20
minutes.
Time calibration signal reception is
●
better at night than during the day.
A time calibration signal cannot be
●
received while the watch is paired with
a phone.
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