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Operation Guide 4757
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, +1, or +2 is selected as the Home Time Zone.
Your Time Zone
1
Standard Time
1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight
+ 0
Daylight Saving
2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am
Time
Standard Time
2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am
+ 1
Daylight Saving
3:00 am 4:00 am 5:00 am Midnight 1:00 am 2:00 am
Time
Standard Time
3:00 am 4:00 am 5:00 am Midnight 1:00 am 2:00 am
+ 2
Daylight Saving
4:00 am 5:00 am Midnight 1:00 am 2:00 am 3:00 am
Time
Note
• Auto receive works only while the watch is in the Timekeeping Mode. Auto receive is
not performed if an auto receive time is reached while an alarm is sounding, or if a
setting screen (a screen with a flashing setting) is on the display.
• 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.
• When auto receive is turned on, 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. The receive operation will be performed whenever the display
shows any one of the calibration times, regardless of whether or not the displayed
time actually is 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. Enter the Receive Result Mode.
Receiving
2. Place the watch on a stable surface so its top (12
o'clock side) is facing towards a window.
3. Hold down B 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 stop while signal reception
is in progress.
• Time calibration signal reception takes from two to 14
Receive successful
minutes. Take care that you do not perform any button
operations or move the watch during this time.
• After successful calibration signal reception is complete,
the hands will start moving to the correct setting. While
they are moving, the current time will be shown on the
digital display. After the hands reach the correct setting,
the digital display will switch to the time that signal
reception was successful.
The watch will enter the Timekeeping Mode if you press
C or if you do not perform any button operation for one
Receive failed
or two minutes.
• When receive is unsuccessful, the display shows "
The watch will enter the Timekeeping Mode without
changing the time setting if you press C or if you do not
perform any button operation for about one or two
minutes.
Note
• To interrupt a receive operation and return to the Receive Result Mode, press 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
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 C.
• If you adjust the time or date setting manually, the
display shows "
Auto Receive Start Times
2
3
4
5
6
next day
next day
next day next day
next day next day
next day next day 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 Receive
Cannot
perform
Result Mode.
• Your current Home Time Zone
manual
receive.
setting is not one of the following:
+0, +1 or +2.
• You changed the time setting
Auto receive
manually.
is not being
• You were adjusting the watch
performed
settings when the auto receive start
successfully
times were reached.
("
"
xx
• You pressed any button while signal
displayed).
receive 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".
Alarm
When the alarm is turned on, the alarm sounds when the alarm time is reached. You
can also turn on an Hourly Time Signal, which will cause the watch to beep twice
every hour on the hour.
• All of the operations in this section are performed in the Alarm Mode, which you
enter by pressing C.
Alarm on
indicator
To set the alarm time
1. In the Alarm Mode, hold down B until the hour setting of the alarm time starts to
flash, which indicates the setting screen.
• This operation automatically turns on the alarm.
2. Press C to move the flashing between the hour and minute settings.
3. While a setting is flashing, use A (+) to change it.
• Take care to set the time correctly as a.m. (
4. Press B to exit the setting screen.
Alarm Operation
The alarm sounds at the preset time for about 10 seconds, regardless of the mode the
watch is in.
• To stop the alarm tone after it starts to sound, press any button.
To test the alarm
1. In the Alarm Mode, hold down B until the hour setting of the alarm time starts to
flash, which indicates the setting screen.
• This operation automatically turns on the alarm.
2. Hold down C to sound the alarm.
3. Press B to exit the setting screen.
To turn the Daily alarm and the Hourly Time Signal on and off
In the Alarm Mode, press B to cycle through the settings shown below.
Alarm On Indicator / Hourly Time Signal On Indicator
Signal Off
Signal Off
Alarm Off
Alarm On
• The alarm on indicator and the Hourly Time Signal on indicator are shown on the
display in all modes while these functions are turned on.
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. In the Timekeeping Mode, press C three times to enter
12 o'clock
the Home Position Adjustment Mode.
2. Hold down B for about five seconds.
• The analog hands do not keep time during home
position adjustment.
3. Use A to align all of the analog hands with 12 o'clock
(home position).
• Each press of A advances the second hand by one
second.
Correct analog hand
home position
• Holding down A for more than two seconds causes the second hand to move
continually at high speed. Press A again to stop high-speed hand movement at a
point that is just before 12 o'clock. Next, complete home position adjustment by
pressing A as many times as necessary to align the hands with 12 o'clock.
• High-speed hand movement will stop automatically if the hands complete a 12-
hour cycle.
4. Pressing B exits the home position adjustment.
What you should do
• Enter the Receive Result
Mode and try again.
• Select +0, +1 or +2 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.
Hourly time signal
on indicator
Alarm time
(Hour)
Alarm time
(Minutes)
indicator) or p.m. (
indicator).
Signal On
Signal On
Alarm Off
Alarm On
2
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