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Operation Guide 3731
4
❚
To view the last reception date and time
In the Timekeeping Mode, press the
BB
BB
B button.
• This causes the display to start alternating between the last
reception date and the last reception time at two-second
intervals.
• To return to the Timekeeping Mode, press the B button again.
• The watch will return to the Timekeeping Mode automatically if
you do not perform any operation for about one or two minutes.
Last reception date
2-Second
interval
Last reception time
❚
Receive Indicator
The receive indicator cycles from
“Unstable” through “Stable” as
shown below while reception is in
progress. How far it cycles depends
on the signal strength. Keep the
watch in a location where reception
is stable while reception is in
progress.
Unstable Stable
• Even under optimum reception conditions, it can take about 10
seconds for reception to stabilize.
• Use the receive indicator to check reception status and to
determine the best location for signal reception.
• Note that weather, the time of day, surroundings, and other
factors can all affect reception.
❚
Analog Hand Operation during Signal Reception
• Second Hand
Moves to 12 o’clock and stops when signal reception starts.
•
Normal second hand movement resumes after reception is complete.
• If a button is pressed to terminate reception, the second hand
moves to the second count of the digital time and resumes normal
movement.
• Minute and Hour Hands
These hands operate normally.
The second hand does not move during signal reception.
Receive Indicator
Configuring Auto Receive Settings
Use the procedure below to turn auto receive of the time
calibration signal on or off. When +9.0 (Tokyo) is selected as the
time zone, you can also specify the transmitter selection mode,
which controls which Japanese transmitter signal should be used
for time calibration.
• For information about selecting a time zone, see
“Configuring Home Time Zone Settings”.
• The initial factory default settings for auto receive are Home Time
Zone = +9 (Tokyo); Auto Receive = A (On)
• The following procedure can be performed only when +9.0, is
selected as the Home Time Zone.
❚
To configure auto receive settings
1. In the Timekeeping Mode,
press the
BB
BB
B button.
• This causes the display to
start alternating between the
last reception date and last
reception time.
• The watch will return to the
Timekeeping Mode
automatically if you do not
perform any operation for
about one or two minutes.
2. Hold down the
AA
AA
A button
for about two seconds.
• This will cause the current
auto receive setting to flash
on the display.
3. Use the
DD
DD
D and
BB
BB
B buttons
to cycle through the
available auto receive
settings.
4. When the setting is the
way you want, press the
AA
AA
A button.
• This will exit the setting
screen and return to the last
reception date and time
screens.
• To return to the Timekeeping
Mode, press the B button
again.
• The watch will return to the
Timekeeping Mode
automatically if you do not
perform any operation for
about two or three minutes.
Calibration Signal Reception
Precautions
• Auto receive can be performed while the watch is in the
Timekeeping Mode or Dual Time Mode only.
• When a time calibration signal is received, the watch corrects its
digital time setting first, and then adjusts the analog time setting
accordingly. In order to ensure that the analog time matches the
digital time, make sure you adjust the analog time to match the
digital time before performing signal reception.
• The analog second hand does not move during signal reception,
and so timekeeping may be off.
• Pressing any button while auto reception is in progress will cause
the watch to beep and then exit the receive operation.
• Make sure you are within the range of the calibration signal
transmitter before performing the reception operation. Remember
that geographic contours, nearby buildings, seasonal conditions,
the time of day, can even make reception impossible even when
you are within range of the transmitter.
• Proper reception may be impossible if there is something blocking
the signal. If reception is unsuccessful, try again.
• This watch is designed to adjust its current time setting in
accordance with the calibration signal transmitted in Japan only. It
operates like a standard (non-radio controlled) watch outside of
the range of the receivable time calibration signal transmitters.
• When the watch is unable to adjust its time signal using the
calibration signal for some reason, timekeeping accuracy is within
±15 seconds per month.
• Strong electrostatic charge can cause timekeeping error.
• Signal reception is cancelled if the alarm starts to sound while it is
being performed.
• The watch’s calendar shows dates up to the year 2099.
Attempting a receive operation after that causes an error.
Auto Receive Settings when the Home Time Zone
is +9.0
• A (AUTO)
Auto receive turned on with automatic selection of either the
Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal
(60kHz), whichever is strongest.
• J40
Auto receive turned on for the Mt. Otakadoya signal (40kHz).
• J60
Auto receive turned on for the Mt. Hagane signal (60kHz).
• OFF
Auto receive turned off.
Troubleshooting
I can’t perform manual calibration signal reception.
Possible Causes
• The watch is not in the Timekeeping Mode.
• +9.0 (Tokyo) is not selected as the time zone.
Recommended Action
• Enter the Timekeeping Mode before performing manual reception.
• Select the correct time zone Use the procedure under
“Configuring Home Time Zone Settings” to select +9.0 (Tokyo) as
the time zone.
Though I have auto receive turned on, does not appear on
the display.
Possible Causes
• is displayed after a time calibration is successfully received
and the time setting is adjusted.
• is not displayed if no signal reception operations are
successful for one day. is cleared from the display at 3:00 a.m.
each day.
• Auto reception is not performed if the watch is not in the
Timekeeping Mode or Dual Time Mode.
• is cleared from the display if you perform a manual receive
operation.
Recommended Action
• Make sure the watch is within the reception range of a time
calibration signal transmitter.
• During the auto receive times, keep the watch in a location where
reception is good.
• During the auto receive times, make sure the watch is in the
Timekeeping Mode or Dual Time Mode.
Time calibration signal reception is successful, but the time
setting is not correct.
Possible Causes
• If the time is one hour off, summer time (DST) is turned on.
• If there time is off by more than one hour, you may have the
wrong time zone selected.
Recommended Action
• Use the procedure under “Configuring Home Time Zone Settings”
to turn off summer time or to select the correct time zone.
• Is the correct time zone selected?
The auto receive settings can’t be configured.
Possible Causes
• Auto receive settings cannot be configured unless +9.0 (Tokyo) is
selected as the Home Time Zone.
Recommended Action
• Use the procedure under “Configuring Home Time Zone Settings”
to select +9.0 as the time zone.
• Check the auto signal reception setting whenever you have
problems with signal reception or when the time setting produced
by signal reception is incorrect.
• The initial factory default configuration of the reception settings
are shown below. You do not need to change these settings if
you use the watch in Japan.
Auto Receive
Time Zone
Summer Time
Tokyo, Japan
Auto Japan transmitter select
(40kHz/60kHz)
Auto switching in accordance
with signal data