Casio MO0507-EA Manuale Utente

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 two 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

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

about 2,000 miles (3,000 kilometers) from the Fort Collins transmitter.

• At distances further than about 600 miles (1,000 kilometers) from the Fort Collins

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.

2,000 miles

Fort Collins

600 miles

About Auto Receive
The watch automatically starts to receive the time calibration signal when the time in
the Timekeeping Mode reaches 0:01 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00
a.m. each day (calibration times). The watch will also perform an additional auto
receive at 5:00 a.m. if none of the regularly scheduled auto receive operations are
successful. 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.

• 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 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 four 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 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

YES. One or two minutes later, the hands will move to
the correct time.

WORK

READY

• 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 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 YES or 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.

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 YES. If the watch has been unable to receive
any signal successfully, the second hand will move to
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 YES indicates successful signal reception since
the start of the current day.

• 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 NO.

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
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

Time Zone.

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

and “Radio-controlled Atomic Timekeeping Precautions”.

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

6. Press A to advance to date home position adjustment.

• The date indicator will show   if the date home

position is correct. Note that it can take up to 90
seconds before 

 appears.

7. Check the date indicator.
8. If the date indicator shows something other than 

, it

means that the date home position is off. If this
happens, press B to advance the date until 
appears.

•

 is located between 31 and 1.

9. Press A to exit home position adjustment.

• This causes the date to change to the current date, and

the hour and minute hands to move to the current time.

• Note that all button operations are disabled while the

date is changing, and the hour and minute hands are
moving.

• To return to the Timekeeping Mode, press B.

 indicator

• After you complete the home position adjustment procedure, place the watch in a

location that allows good time calibration signal reception, and then perform a
manual receive operation. See “To perform manual receive” for more information.