Casio MO0503-EA Manuale Utente

2

Rugby

Mainflingen

1,500 kilometers

500 kilometers

• Under good reception conditions, signal reception is possible within a radius of

about 1,500 kilometers from a transmitter.

• At distances further than about 500 kilometers from a transmitter, signal reception

may not be possible during certain times of year or times of day. Radio interferance
may also cause problems with reception.

• 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 Home Time Zone.

Note
• The auto receive operation is performed only if the watch is in the Timekeeping

Mode when one of the calibration times is reached. It is not performed if a calibration
time is reached while an alarm is sounding, or while you are configuring settings.

GMT +0 Standard Time 1:00 am 2:00 am 3:00 am 4:00 am 5:00 am Midnight

2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am

next day

GMT +1 Standard Time 2:00 am 3:00 am 4:00 am 5:00 am Midnight 1:00 am

next day

3:00 am 4:00 am 5:00 am Midnight 1:00 am 2:00 am

next day next day

• 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.

1. Place the watch on a stable surface so its 9 o’clock side

is facing towards a window.

2. In any mode, hold down B for about two seconds until

the watch beeps.

3. When you release B, the 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 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 or two minutes later, the hands will move to
the correct time.

Note
• To interrupt a receive operation and return to the Timekeeping Mode, press any

button.

• If reception is not successful, the second hand will move to N (No). One or two

minutes later, the second hand will resume normal operation, without any
adjustment of the hand setting.

• If the second hand is pointing to Y or N, 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.

Enter the Receive Result Mode.
• If the watch was able to perform a successful signal

receive operation since midnight, the 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).

• To return to the Timekeeping Mode, press B three

times.

• The current receive result is cleared when the first auto

receive operation is performed on the following day. This
means Y indicates successful signal reception since the
start of the current day.

• Y 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.

Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.

• 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 Time Zone setting is not

correct for the area where you are
using the watch.

The second
hand is
pointing at N.

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.

• For further information, see “Important!” under “Time Calibration Signal Reception”

and “Radio-controlled Timekeeping Precautions”.

When the alarm is turned on, the alarm sounds when the
alarm time is reached.
• All of the operations in this section are performed in the

Alarm Mode, which you enter by pressing B.

• When you enter the Alarm Mode, the second hand will

move to either ON (alarm on) or OFF (alarm off), and
the hands will move to the current alarm time setting.

To set an alarm time
1. In the Alarm Mode, hold down A for five seconds to

display the setting mode.
• The second hand will move to AM or PM.

2. Use A and B to change the alarm time.

• Press B to move the hands clockwise in one-minute

steps.

• To move the hands back, press A. After that, each press of B will move the

hands counterclockwise in one-minute steps.

• Once you use the above operation to change to counterclockwise hand

movement, pressing A will not change back to clockwise hand movement.
Pressing A during counterclockwise hand movement will exit the setting mode.
To use clockwise hand movement again, you will need to exit the setting mode
and restart this procedure from step 1.

• When setting the alarm time, take care to set AM and PM correctly. The second

hand will move between AM and PM any time the hour hand moves past 12
o’clock while you are setting the alarm time.

3. After setting the alarm time, press A as many time as necessary to exit the setting

mode.

• If you set the alarm time using clockwise hand movement only, press A twice to exit

the setting mode.

• If you set the alarm time using counterclockwise hand movement, press A once to

exit the setting mode.

• This will cause the hour and minute hands to move to the current time, and the

second hand to move to ON (alarm on).

• Setting the alarm time causes the alarm to turn on automatically.

Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in.
• Alarm operations are performed in accordance with the Timekeeping Mode time.
• Pressing any button stops the alarm tone operation.

To turn an alarm on and off
In the Alarm Mode, press A to toggle the alarm ON and OFF.

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.

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.

2. While in the Home Position Adjustment Mode, hold

down A for about five seconds. This will cause the
second hand to make one revolution and stop at its
current home position.
• The analog hands do not keep time during home

position adjustment.

3. Check the position of the second hand.

• The second hand home position is correct if it is

pointing at 12 o’clock.

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 B to move the second hand clockwise in one-
second steps, until it points at 12 o’clock.

4. Press A 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.

5. 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 B to move the hour and minute
hands clockwise in 10-second steps, until they point
at 12 o’clock.

• You can change the hour and minute hand movement

direction to counterclockwise by pressing A. After
that, each press of B will move the hour and minute
hands counterclockwise in 10-second steps.

12 o’clock