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Casio 4306 Manual

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Operation Guide 3779 4306
2
About Auto Receive
With 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 Auto Receive Start Times
12345
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 Midnight
Daylight Saving Time 3:00 am 4:00 am 5:00 am Midnight 1:00 am
next day
GMT +2 Standard Time 3:00 am 4:00 am 5:00 am Midnight 1:00 am
next day
Daylight Saving Time 4:00 am 5:00 am Midnight 1:00 am 2:00 am
next day next day
GMT –5, Standard Time and Midnight 1:00 am 2:00 am 3:00 am 4:00 am
–6, Daylight Saving Time
–7,
–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. Auto receive 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 seven minutes everyday when
the time in the Timekeeping Mode reaches each of the calibration times. Do not
perform any button operation within seven 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.
To turn off time calibration signal reception
1. In the Timekeeping Mode, hold down B for about five
seconds until the second hand moves to the currently
selected time zone and stops. This is the setting mode.
2. Press A a many times as required to move the second
hand to 11 o’clock.
•Time calibration signal reception is turned off when
the second hand is pointing to 11 o’clock.
3. Press B three times to exit the setting mode.
•If you turn off signal reception and then select a home
time zone that supports signal reception again, be sure
to perform a manual receive operation to adjust the time
setting.
To perform manual receive
1. Place the watch on a stable surface so its 6 o’clock side
is facing towards a window.
2. In the Timekeeping Mode, hold down A for about two
seconds until the second hand moves to the area along
the bottom of the face marked “•” (33 seconds).
•This will start manual calibration signal reception.
3. The second hand indicates one of the following
conditions described below during signal reception.
•The hour and minute hands continue to keep time
normally.
Start of Signal
Reception
“•” area (33 seconds)
“•••” area (38 seconds)
Getting ready
to receive
Receiving
It means this:If the second hand is pointing here:
•Time calibration signal reception takes from two to seven minutes, but in some
cases it can take up to 10 minutes. Take care that you do not perform any button
operations or move the watch during this time.
•The watch will enter the Receive Result Mode automatically after signal reception is
complete.
•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.
•The watch will enter the Receive Result Mode
automatically after you perform a manual receive
operation.
•The position of the second hand indicates the result of
the latest receive operation, as shown below.
“Y” area (22 seconds) : Receive successful
“N” area (27 seconds) : Receive failed
•The hour and minute hands continue to keep time normally in the Receive Result Mode.
•The watch will not enter the Receive Result Mode when you press A if calibration
signal reception is turned off.
•To return to the Timekeeping Mode, press A.
•Manually changing the hour and minute hand setting clears the current receive
result. This is indicated by the second hand pointing to the “N” area (27 seconds).
•The second hand will point to the “N” area (27 seconds) if the last receive operation
was interrupted for some reason.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
•The watch is not in the Timekeeping
Mode or Receive Result Mode.
•Signal reception is turned off.
•You changed the time setting
manually.
•
You were adjusting the watch settings
when the auto receive start times
were reached.
•
You pressed
A
while signal receive
was in progress.
Cannot
perform
manual
receive.
The second
hand is
pointing to
the “N” area
(
27 seconds
).
•Enter the Timekeeping Mode
or Receive Result Mode and
try again.
•Select a time zone that
enables calibration 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.
What you should doProblem Probable Cause
Time setting
is incorrect
following
signal
reception.
•The Home Time Zone setting is not
correct for the area where you are
using the watch.
•The home position of the hands is
off.
•Select the correct Home
Time Zone.
•Enter the Home Position
Adjustment Mode and adjust
the home position.
•For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Timekeeping Precautions”.
Adjusting the Home Positions
If the time 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. Enter the Home Position Adjustment Mode.
•If the home position of the second hand is currently
correct, it will move to the 12 o’clock position.
•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.
12 o’clock
Correct second hand
home position 3. Press B to advance to hour and minute hand home
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.
5. Press B to exit home position adjustment.
•This will cause the watch to return to the Timekeeping
Mode. The hour, minute, and second hands will indicate
the current time.
Correct hour
and minute hand
home position
12 o’clock
Timekeeping
Use the Timekeeping Mode to set and view the current
time. This section also explains how to set the current 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.
Hour hand Minute hand
Second hand
Setting the Time
You can use the Timekeeping Mode to change the hand setting and to switch between
Standard Time and Daylight Saving Time.
•You can also change the Home Time Zone setting in the Timekeeping Mode.
To change the time setting
1. In the Timekeeping Mode, hold down B for about five
seconds until the second hand moves to the currently
selected time zone and stops. This is the setting mode.
2. Press B twice.
•This will cause the second hand to the 8-second
position.
3.
Press
A
to move the time setting forward by one minute.
•Holding down A for about two seconds starts high-
speed hand movement. High-speed hand movement
will continue until the hands complete a 12-hour cycle,
or until you stop them by pressing A.
4. Coordinating with a time signal on the radio or TV, press B to restart normal
timekeeping. The second hand will move to 12 o’clock at the start of timekeeping.
•If you did not change any of the time settings (hour, minute), pressing B will cause
the second hand to move to the seconds for the current time and resume
timekeeping from there.
•If you manually change the time setting between midnight and noon, the watch will
perform auto receive starting from noon. After that, auto receive will be performed at
the normal times (starting from midnight) each day. If you manually change the time
setting between noon and midnight, the watch will start performing normal auto
receive starting from midnight.
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