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Operation Guide 2891
6
1. In the Timekeeping Mode,
press the
DD
DD
D button six
times to display the last
reception date and time.
2. Hold down the
EE
EE
E button
for about two seconds
until the current On/OFF
setting starts to flash on
the display. This is the
setting screen.
Configuring Auto Receive Settings
Use the procedure below to turn auto calibration signal reception on and off.
• The following is the procedure for configuring auto receive settings when TYO (Tokyo) is selected as the Home City.
3. Press the
CC
CC
C button to
toggle the setting between
On and OFF.
4. When the setting is the
way you want, press the
EE
EE
E button to exit the
setting screen and return
to the reception date and
time screen.
• Press the D button to return
to the Timekeeping Mode.
• The display also will exit the setting screen automatically if
you do not perform any operation for about two or three
minutes.
(6 times)
(2 seconds)
Calibration Signal Reception
Precautions
• Auto receive can be performed while the watch is in the
Timekeeping Mode or World Time Mode only.
• Signal reception is not possible when any one of the following
conditions exists.
• Timer operation in progress
• Battery at Level 3 or Level 4
• Recover indicator (RECOV) displayed
• While altitude recording is being performed (Manual signal
reception can still be performed.)
• Operating any button while auto receive 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, the season, 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.
Note that you will need to make your own adjustments when using
this watch outside of Japan, or in any area that is outside the
range of one 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 an alert operation is starts 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.
When the time zone setting is TYO
• On
Selecting this setting turns on auto receive and auto
transmitter selection. The watch automatically selects either
the Otakadoya Mountain signal (40kHz) or the Hagane
Mountain signal (60kHz), whichever is strongest.
• OFF
Selecting this setting turns off auto receive and auto
transmitter selection.
Troubleshooting
The watch cannot receive the time calibration signal.
• Is the signal being transmitted?
Though the time data of the Japanese calibration signal (Call
Sign: JJY) is maintained by the Japan Standard Time Group of
the National Institute of Information and Communications
Technology (NICT), it may sometimes be interrupted for periodic
maintenance work, or because of lightning or other problems.
• Are you within the reception range of a transmitter?
See “Reception Ranges” for information about areas where the
watch can receive the signal.
• Is there something in the immediate area that may be interfering
with reception?
Even if you are within the reception range of a transmitter, objects
between you and the transmitter or electrical noise can interfere
with reception. Avoid such areas during signal reception. See
“Location” for more information.
• Do you have the correct Home City code selected?
Signal reception is not performed when the Home City setting is
any city code other than TYO (Tokyo). For details about setting
the correct Home City, see “To configure Home City settings”.
• Is auto receive turned off?
Use the procedure under “Configuring Auto Receive Settings” to
turn on auto receive.
• Barometric pressure readings (at the top of each even-numbered
hour) take precedence over auto receive. For hours when both
are scheduled, auto receive is performed about one minute past
the top of the hour.
• Is the watch in any mode other than the Timekeeping Mode or
World Time Mode during the auto receive times (midnight, 1:00
a.m., 2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 a.m.)?
Auto receive is performed only when the watch is in the
Timekeeping Mode or World Time Mode. It is not performed if the
watch is in any other mode.
Time calibration signal reception is successful, but the hourly
time signal and current time are slightly off.
• After the watch receives the time calibration signal, it performs an
internal decoding process before updating its time setting.
Because of this, the time setting may be slightly off (within one
second).
Time calibration signal reception is successful, but the current
time is one hour fast.
• Do you have summer time (DST) turned on? Use the procedure
under “To configure Home City settings” to change the summer
time setting to OFF.
Time calibration signal reception is successful, but the current
time setting is wrong.
• Is TYO (Tokyo) selected for your Home City? For details about
setting the correct Home City, see “To configure Home City
settings”.
Can you configure auto receive settings?
• Auto receive settings cannot be configured when the Home City
setting is any city code other than TYO (Tokyo). For details about
setting the correct Home City, see “To configure Home City
settings”.
When is auto receive performed?
• Auto receive is performed in the middle of the night, when
reception conditions are best. Before going to bed at night, place
the watch near a window, with 12 o’clock facing in the general
direction of the transmitter.
How can I view the last reception date and time?
• In the Timekeeping Mode, press the D button (lower left) six
times to enter the Receive Mode.
This will display the date and time that the time calibration signal
was last received successfully. To return to the Timekeeping
Mode, press the D button again.
How can I perform manual receive?
• In the Receive Mode, hold down the C button (lower right) for
about two seconds. The watch will beep to indicate that manual
receive has started. Place it near a window, with 12 o’clock facing
in the general direction of the transmitter.
• If you cannot receive the calibration signal or if the current time
setting is incorrect after signal reception, check the current setup
of the watch.
• The following are the watch’s factory default settings, which are
configured automatically whenever you have the battery of the
watch replaced.
Auto Receive
Home City
Summer Time
Tokyo
On
Auto (according to signal data)