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Operation Guide 4723
2
• Signal reception may not be possible at the distances noted below during certain
times of the year or day. Radio interference may also cause problems with reception.
Mainflingen (Germany) or Rugby (England) transmitters: 500 kilometers (310
miles)
• Even when the watch is within the reception range of the transmitter, signal
reception will be impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
About Auto Receive
The watch receives the time calibration signal automatically up to six times a day.
When any auto receive is successful, the remaining auto receive operations are not
performed. The reception schedule (calibration times) depends on your currently
selected Home Time Zone, and whether standard time or Daylight Saving Time is
selected for your Time Zone.
Note
• Auto receive is turned on whenever +0.0, +1.0, or +2.0 (+1.0, +2.0, or +3.0 while
DST is turned on) is selected as the Home Time Zone.
Your Time Zone
Auto Receive Start Times
1234 5 6
+ 0.0 Standard Time
1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight
(DST +1.0)
Daylight Saving
2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am
Time
next day
Standard Time
2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am
next day
Daylight Saving
3:00 am 4:00 am 5:00 am
Midnight
1:00 am 2:00 am
Time
next day next day
+ 2.0 Standard Time
3:00 am 4:00 am 5:00 am
Midnight
1:00 am 2:00 am
(DST +3.0)
next day next day
Daylight Saving
4:00 am 5:00 am
Midnight
1:00 am 2:00 am 3:00 am
Time
next day next day next day
+ 1.0
(DST +2.0)
Note
• The auto receive operation is performed only if the watch is in the Timekeeping
Mode or Dual Time Mode when a calibration time is reached. It is not performed if a
calibration time is reached while an alarm is sounding or while you are configuring
settings.
• Auto receive of the calibration signal is designed to be performed early in the
morning, while you sleep (provided that the Timekeeping Mode time is set correctly).
Before going to bed for the night, remove the watch from your wrist, and put it in a
location where it can receive the signal easily.
• The watch receives the calibration signal for two to 14 minutes everyday when the
time in the Timekeeping Mode reaches each of the calibration times. Avoid
performing any button operation within 14 minutes before or after any one of the
calibration times. Doing so can interfere with correct calibration.
• Remember that reception of the calibration signal depends on the current time in the
Timekeeping Mode.
To perform manual receive
1.Place the watch on a stable surface so its 12 o’clock
side is facing towards a window.
2.In the Timekeeping Mode, hold down A for about two
seconds until the watch beeps.
3.The stopwatch second hand will move to R (READY) to
indicate that the watch is setting up for time calibration
reception.
• The second hand will move to W (WORK) and stay there
while actual reception is in progress.
• The hour and minute hands continue to keep time
normally.
• Time calibration signal reception takes from two to
seven minutes, but in some cases it can take up to 14
minutes. Take care that you do not perform any button
operations or move the watch during this time.
• If reception is successful, the second hand will move to
Y (YES). One minute later, the hands will move to the
correct time.
W (WORK)
R (READY)
Y (YES)
N (NO)
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press any
button.
• If reception is not successful, the stopwatch second hand will move to N (NO).
One minute later, the stopwatch second hand will resume normal operation, without
any adjustment of the hand setting.
• If the stopwatch second hand is pointing to Y (YES) or N (NO), you can return to the
Timekeeping Mode by pressing any button.
Viewing the Latest Signal Reception Results
You can use the Receive Result Mode to check if signal reception was performed
correctly.
To check the latest signal reception results
1.In the Timekeeping Mode, press A.
• If the watch was able to perform a successful signal
receive operation since midnight, the stopwatch second
hand will move to Y (YES). If the watch has been unable
to receive any signal successfully, the second hand will
move to N (NO).
• The watch will return to the Timekeeping Mode after five
seconds.
• The current receive result is cleared when the first auto
receive operation is performed on the following day. This
means Y (YES) indicates successful signal reception
since the start of the current day.
• If you adjust the time or date setting manually, the
second hand will move to N (NO).
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
• You changed the time setting
manually.
•
You performed some button operation
during the auto receive operation.
• Signal reception results are reset
when the first auto receive
operation of the day is performed.
• The Home Time Zone setting is not
correct for the area where you are
using the watch.
The
stopwatch
second hand
is pointing at
N (NO).
Time setting is
incorrect
following signal
reception.
• Perform manual signal
receive or wait until the next
auto signal receive operation
is performed.
• Check to make sure the
watch is in a location where it
can receive the signal.
• Select the correct Home
Time Zone.
What you should doProblem Probable Cause
Stopwatch
The stopwatch lets you measure elapsed time,.
• The display range of the stopwatch is 59 minutes, 59.99
seconds.
• Entering the Stopwatch Mode causes the second hand,
the stopwatch minute hand and stopwatch 1/20 second
hand to move to the 12 o’clock position.
• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
• The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
• All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C.
Stopwatch 1/20 second hand
* This hand rotates and indicates
the second count during the first
60 seconds.
Second hand
Stopwatch minute
hand
Stopwatch
1/100 second
To measure elapsed time
1. Press B to start the stopwatch.
2. Press B to stop the stopwatch.
• You can resume the measurement operation by pressing B again.
• The 1/20 second hand rotates during the first 60 seconds only, and then stops.
When elapsed timing is stopped (by pressing B), this hand jumps to the 1/20
second indication (which is kept internally).
3. Check the elapsed time.
• Press A to reset the stopwatch.
Dual Time
The Dual Time Mode lets you view the current time in 29
time zones around the world.
• Time zones are indicated on the digital display by their
GMT differential values.
• For full information on time zones, see the “Time Zone
Table”.
• The watch will perform a signal receive operation even if
it is in the Dual Time Mode when a calibration time is
reached. If this happens, the Dual Time Mode time
settings will be adjusted in accordance with the current
time in the Timekeeping Mode’s Home Time Zone.
• All of the operations in this section are performed in the
Dual Time Mode, which you enter by pressing C.
Minus sign
GMT differential
value(-4.0)
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
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l
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To view the time in another time zone
While in the Dual Time Mode, press B to scroll eastward through time zones.
• When you release B, the hands will move to the current time in that time zone after
about one second.
• If the current time shown for a time zone is wrong, check the Timekeeping Mode
time setting and your Home Time Zone setting, and make the necessary changes.
To toggle a time zone between Standard Time and Daylight Saving Time
1.In the Dual Time Mode, use B to display the time zone
whose Standard Time/Daylight Saving Time setting you
want to change.
2.Hold down A to toggle between Daylight Saving Time
(DST indicator displayed) and Standard Time (DST
indicator not displayed).
• Turning on DST causes the GMT differential value to be
increased by one.
• The DST indicator appears on the display whenever you
display a time zone for which Daylight Saving Time is
turned on.
DST indicator
• The DST/Standard Time setting you configure affects only the currently displayed
time zone. Other time zones are not affected.
• The
(GMT: Greenwich Mean Time) time zone cannot be switched between
Standard Time and Daylight Saving Time.