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.
1.
Enter the Timekeeping Mode.
Navigating Between Modes
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2.
Place the watch near a window or some
other location appropriate for signal
reception.
The second hand points to [RC] 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.
Watch Operation Guide 5672
Manual Time Calibration Signal
Receive
1.
Place the watch near a window or some
other location appropriate for time signal
reception.
2.
Enter the Timekeeping Mode.
Navigating Between Modes
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3.
Hold down (D) for at least 0.5 seconds
until the second hand points to [RC].
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.
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.
Signal Reception Precautions
When the watch is unable to adjust its time
●
in accordance with a calibration signal for
some reason, average timekeeping
accuracy is within ±15 seconds per month.
Note that an internal decoding process the
●
watch performs after it receives a signal
may cause the time setting to be slightly off
(by less than one second).
Time calibration signal reception is not
●
possible under the conditions described
below.
While battery power is low
ー
In any mode besides the Timekeeping
ー
Mode
At Power Saving Level 2
ー
While the crown is pulled out
ー
While the Home City setting is a time zone
ー
where time signal reception is not
possible
While the watch is outside the time signal
ー
reception range
While the watch is paired with a phone
ー
To perform a manual time calibration signal
●
receive operation, make sure the watch is
not paired with a phone. If it is, delete the
watch's pairing information before
performing the manual receive operation.
Unpairing
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When the receive operation is successful,
●
the time and/or day settings will be adjusted
automatically. Summer time will not be
applied correctly in the case described
below.
When the summer time start date and
ー
time, end date and time, or other rules are
changed by authorities
If your watch is connected with a phone,
●
settings must be configured so CASIO
WATCHES can acquire location
information. Even if you are in an area that
is within the reception range of a time signal,
reception will not be performed if settings
are configured in a way that makes signal
reception impossible.
As of July 2021, China does not observe
●
summer time. If China starts to observe
summer time in the future, the time
displayed by the watch for China may not be
correct.
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