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Operation Guide 4365
2
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
• Signal reception is normally better at night than during the day.
• Time calibration signal reception takes from four to seven minutes, but in some
cases it can take as long as 14 minutes. Take care that you do not perform any
button operations or move the watch during this time.
Inside or
among
buildings
Inside a
vehicle
Near a
construction
site, airport, or
other sources
of electrical
noise
Near high-
tension
power lines
Among or
behind
mountains
Near
household
appliances,
office
equipment,
or a mobile
phone
• When within range of the applicable transmitter, this watch can receive either the
Germany (Mainflingen) or England (Rugby) time calibration signals.
See “Transmitters” for more information.
Rugby
Mainflingen
1,500 kilometers
500 kilometers
• 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 City, and whether standard time or Daylight Saving Time is selected
for your Home City.
Note
• Auto receive is turned on whenever LON, PAR, or ATH is selected as the Home City
code.
Your City Code
Auto Receive Start Times
1234 5 6
LON Standard Time
1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight
(GMT +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
ATH Standard Time
3:00 am 4:00 am 5:00 am
Midnight
1:00 am 2:00 am
(GMT +2)
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
PAR
(GMT +1)
Note
• Auto receive is supported in all modes except while a stopwatch elapsed time
operation is in progress.
• Auto receipt 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 ten 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 READY to
indicate that the watch is setting up for time calibration
reception.
• The second hand will move to 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 four 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). 10 seconds later, the hands will move to the
correct time.
WORK
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).
5 second 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 or when you press A.
• 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.
• Y (YES) continues to be indicated even if an attempt at
manual receive fails after auto receive is successful.
• 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 Timekeeping Precautions”.
• You changed the time setting
manually.
•
The watch was not in the
Timekeeping Mode, or you performed
some button operation during the
auto receive operation.
• Signal reception results are reset at
midnight each day.
• The Home City 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 City.
What you should doProblem Probable Cause
Dual Time
The Dual Time lets you keep track of time in a different
time (24-hour format).
• All of the operations in this section are performed in the
Timekeeping Mode.
• The Dual Time is synchronized with the current time.
To set the Dual Time
1. In the Timekeeping Mode, each press of D advances
Dual Time 30 minutes. Press D to set the Dual Time
that you want.
Dual Time hour hand
Dual Time minute hand
Stopwatch
The stopwatch lets you measure elapsed time,.
• The display range of the stopwatch is 23 hours, 59
minutes, 59.95 seconds.
• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
• You cannot switch to another mode while a stopwatch
elapsed time operation is in progress.
• All of the operations in this section are performed in the
Stopwatch Mode.
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.
Stopwatch second hand
Stopwatch 1/20 second hand
* This hand rotates and indicates
the second count during the first
60 seconds.
•
Stopwatch hour hand
(24-hour format)
•
Stopwatch minute hand
• 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.