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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 Navigating Between Modes
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.
Checking the Receive
Operation Result
You can use the procedure below to check the
result of the last GPS or time calibration signal
receive operation.
Getting Ready
Enter the Timekeeping Mode.
l Navigating Between Modes
1.
Press (B).
The second hand will move and indicate
the receive operation result.
“Y (YES)”: Receive successful
“N (NO)”: Receive failed
30
Second hand
2.
Press (B) or do not perform any operation
for one or two seconds to return to the
current time.
Note
●
Even if there was a successful
receive operation, the second hand
will point to “N(NO)” if you adjusted
the time setting manually.
●
If you do not perform any watch
operation for about one or two
seconds after position information is
acquired, the watch will display the
acquired Home City (time zone) and
the rough latitude of your current
position.
30
Latitude
Home City
Signal Reception
Precautions
●
GPS signal and time calibration signal
reception will not be possible under any of
the watch conditions described below.
ー
While battery power is low
ー
While the watch is in the Airplane Mode,
Stopwatch Mode, Timer Mode, or Alarm
Mode
ー
When power saving is at Level 2 (GPS
signal reception also is not possible at
Level 1.)
ー
While the crown is pulled out
ー
While a stopwatch elapsed time
measurement and/or timer countdown
operation is in progress
ー
While the temperature of the watch is less
than approximately -10°C (14°F) or
greater than approximately 60°C (140°F)
●
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).
●
If the receive operation is successful, the
time and day settings will be adjusted
automatically in accordance with the Home
City (time zone) and summer time settings.
Summer time will not be applied correctly in
the cases described below.
ー
When the summer time start date and
time, end date and time, or other rules are
changed by authorities
ー
When position information cannot be
acquired correctly
ー
When position information can be
acquired, but it is wrong because the
watch is located near a time zone
boundary, etc.
●
As of December 2013, 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.
●
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.
Operation Guide 5411
6
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