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Operation Guide 4303
About Auto Receive
The watch receives the time calibration signal automatically up to five 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 Home Time Zone.
Your Home Time Zone
1
GMT 0
Standard Time
1:00 am 2:00 am 3:00 am 4:00 am 5:00 am
Daylight Saving Time
2:00 am 3:00 am 4:00 am 5:00 am Midnight
GMT +1
Standard Time
2:00 am 3:00 am 4:00 am 5:00 am
Daylight Saving Time
3:00 am 4:00 am 5:00 am Midnight
E (GMT
Standard Time and
Midnight 1:00 am 2:00 am 3:00 am 4:00 am
–5), C
Daylight Saving Time
(GMT –6),
M (GMT
–7), P
(GMT –8)
Note
• When a calibration time is reached, the watch will automatically receive the
calibration signal only if it is in either the Timekeeping Mode or Receive Result
Mode. It is not performed if a calibration time is reached while you are configuring
settings.
• 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 ten minutes everyday when the
time in the Timekeeping Mode reaches each of the calibration times. Do not perform
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. The receive operation will be performed whenever the display
shows any one of the calibration times, regardless of whether or not the displayed
time is actually the correct time.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received. For
best reception, be sure to keep the watch in a location where signal strength is
strongest.
The receiving indicator is displayed while an auto or manual receive operation is in
progress.
Receiving indicator
Weak
(Level 0)
• Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal reception.
To perform manual receive
1. Place the watch on a stable surface so its 6 o'clock side
Receiving
is facing towards a window.
2. Hold down A for about two seconds until
flash on the display.
• The second hand will move to 12 o'clock 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 ten
minutes. Take care that you do not perform any button
Receive successful
operations or move the watch during this time.
• When receive is successful, the display shows the time
that receive was successful.
• The watch will enter the Timekeeping Mode if you press
A or if you do not perform any button operation for
about three minutes.
• When receive is unsuccessful, the display shows "
The watch will enter the Timekeeping Mode without
changing the time setting if you press A or if you do not
Receive failed
perform any button operation for about three minutes.
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press A.
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
Enter the Receive Result Mode.
• When receive is successful, the display shows the time
that receive was successful. When receive is not
successful, the display shows "
• To return to the Timekeeping Mode, press A.
• If you adjust the time or date setting manually, The
display shows "
Auto Receive Start Times
2
3
4
5
Midnight
1:00 am
next day
Strong
(Level 3)
R0
starts to
xx
".
".
xx
xx
".
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem
Probable Cause
• The watch is not in the Timekeeping
Cannot
perform
Mode or Receive Result Mode.
• Your current Home Time Zone
manual
receive.
setting is not one of the following: 0,
+1, E (GMT–5), C (GMT–6), M
(GMT–7) or P (GMT–8).
• You changed the time setting
Auto receive
manually.
is not being
• You were adjusting the watch settings
performed
when the auto receive start times
successfully
were reached.
("
xx
"
• You pressed A while signal receive
displayed).
was in progress.
• The Home Time Zone setting is not
Time setting
is incorrect
correct for the area where you are
following
using the watch.
• The home position of the hands is
signal
reception.
off.
• For further information, see "Important!" under "Time Calibration Signal Reception"
and "Radio-controlled Atomic Timekeeping Precautions".
Adjusting the Home Positions
If the time and date settings are wrong even after the time calibration signal is
received normally, use the following procedure to adjust their home positions.
To adjust the home positions
1. While in the Timekeeping Mode, hold down A and B
12 o'clock
for about five seconds.
• The analog hands do not keep time during home
position adjustment.
2. Check the position of the second hand.
• The second hand home position is correct if it is
pointing at 12 o'clock.
• If the second hand is not pointing at 12 o'clock, it
means that its home position is off. If this happens,
press A to move the second hand clockwise in one-
second steps, until it points at 12 o'clock.
• Holding down A for more than two seconds causes
Correct second hand
the hands to move at high speed. Pressing A again
home position
stops the hands.
3. Press B to advance to hour and minute hand home
12 o'clock
position adjustment.
• If current hour and minute hand alignment is correct,
they will both move to 12 o'clock.
4. Check the position of the hour and minute hands.
• If the hour and minute hands are not pointing at 12
o'clock, it means that their home position is off. If this
happens, press A to move the hour and minute
hands clockwise in 20-second steps, until they point
at 12 o'clock.
• Holding down A for more than two seconds causes
the hands to move at high speed. Pressing A again
Correct hour
stops the hands.
and minute hand
5. Pressing B exits the home position adjustment mode
home position
and enters the Timekeeping Mode.
Timekeeping
Use the Timekeeping Mode to set and view the current
time and date. This section also explains how to set the
Minute hand
Hour hand
current date and time manually.
• If you become confused and lose your way during the
following procedures, simply put the watch down and do
not perform any button operation for about three
minutes. This will cause the watch to enter the
Timekeeping Mode (indicated by normal one-second
movement of the second hand) automatically. After that,
you can try performing the manual setting procedure
again from the beginning.
• All of the operations in this section are performed in the
Date
Timekeeping Mode.
Second hand
To set the time and date manually
1. In the Timekeeping Mode, hold down B for about five
12 o'clock
seconds.
• This will cause the second hand to move to 12 o'clock.
• The hour and minute hands do not move in the setting mode.
2. Press B to cycle through settings in the sequence shown
below.
Hold down B.
Press B.
Timekeeping
GMT Differential
Mode
Value
Day of the
Auto Receive
Week Language
What you should do
• Enter the Timekeeping Mode
and try again.
• Select 0, +1, E (GMT–5), C
(GMT–6), M (GMT–7) or P
(GMT–8) as your Home Time
Zone.
• 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.
• Enter the Home Position
Adjustment Mode and adjust
the home position.
Hour
DST
Seconds
Day
Month
Year
Minutes
2
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