MO0806-EA
Operation Guide 5041
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
Starting second hand movement and digital display
To conserve battery power, the watch is shipped from the
factory with its functions disabled. Pressing any one of the
watch’s three buttons will activate its functions, which will
cause the second hand to start moving and the digital
display to activate.
About This Manual
Stopwatch second hand
Hour hand
Minute hand
• Button operations are indicated using the letters shown
in the illustration.
• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage
or loss suffered by you or any third party arising through the use of this product or
its malfunction.
General Guide
• Press C to change from mode to mode.
• About one or two seconds after you enter the World Time Mode, Alarm Mode, or
Hand Setting Mode, the hands will move to the position that indicates the current
setting of the mode.
• In the Timekeeping Mode (except when a setting screen is on the display), press B
to illuminate the face of the watch for about one second.
Timekeeping Mode
Press C.
▲
Radio-controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
• Supported time calibration signals: Germany (Mainflingen), England (Anthorn).
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration
signal. You also can perform a manual procedure to set the time and date, when
necessary.
• The first thing you should do after purchasing this watch is to specify your
Home City, which is the city where you normally will use the watch. For more
information, see “To specify your Home City”.
• When using the watch outside the areas covered by the time signal transmitters, you
will have to adjust the current time setting manually as required. See
for more information about manual time settings.
To specify your Home City
Second hand
• For full information on city codes, see the “City Code Table”.
City Code
LON
PAR
ATH
• In addition to the above, you also can select city codes that are outside the ranges
of the time calibration signal transmitters supported by this watch.
3. After the Home City setting is the way you want, press A to return to the
Timekeeping Mode.
• Normally, your watch should show the correct time as soon as you specify your
Home City code. If it does not, it should adjust automatically after the next auto
receive operation. You also can perform manual receive or you can set the time
manually.
• Even if the time calibration signal is received correctly, there are some times when
the analog hands may not indicate the correct time. If this happens, use the
procedures under “Adjusting the Home Positions” to check the home positions of the
hands, and make adjustments as required.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive and manual receive.
• Auto Receive
With 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. For more information, see “About Auto Receive”.
• Manual Receive
Manual receive lets you start a time calibration receive operation with the press of a
button. For more information, see “To perform manual receive”.
1. In the Timekeeping Mode, hold down A for about five
City code
German/U.K. Signal
seconds until the watch beeps twice.
• The second hand will move to the city code of the
currently selected Home City. This is the city code
setting mode.
2. Use B to move the second hand to the city code you
want to use as your Home City.
• Each press of B causes the second hand to advance
clockwise to the next city code.
• Time calibration signal reception is supported when
any one of the city codes shown in the table below is
selected as your Home City.
City Name
London
Pari s
Athens
“Timekeeping”
Date
Stopwatch
minute hand
▲
Important!
• When getting ready to receive the time calibration signal, position the watch as
shown in the nearby illustration, with its 12 o’clock side facing towards a window.
This watch is designed to receive a time calibration signal late at night. Because of
this, you should place the watch near a window as shown in the illustration when you
take it off at night. Make sure there are no metal objects nearby.
• Make sure the watch is facing the right way.
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Inside or
among
buildings
• Signal reception normally is 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.
Approximate Reception Ranges
• In April 2007, the U.K. signal transmitter was moved from Rugby to Anthorn, which
resulted in a slight shift in the approximate reception range of the signal. The shift is
so slight that there is virtually no change in the ability to receive the signal.
• Even when the watch is within the reception range of a transmitter, signal reception
may be impossible at times due to the effects of geographic contours, structures,
weather, the season of the year, the time of day, radio interference, etc. Note that the
signal becomes weaker at distances of approximately 500 kilometers from the
transmitter, which means that the influence of the conditions listed above becomes
even greater.
24-hour hand
Second hand
(Timekeeping/
Stopwatch)
Stopwatch Mode
World Time Mode
▲
Hand Setting Mode Alarm Mode
▲
12 o’clock
or
Inside a
vehicle
1,500 kilometers
Anthorn
500 kilometers
Near
household
appliances,
office
equipment,
or a mobile
phone
Near a
construction
site, airport,
or other
sources of
electrical
noise
Near hightension power
lines
Mainflingen
U.K. signal transmitter
approximate reception
range as of April 2007
▲
Among or
behind
mountains
1
Operation Guide 5041
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 City, and whether standard time or Daylight Saving Time is selected
for your Home City.
Your Home City Auto Receive Start Times
LON
Standard Time
Daylight
Saving Time
PAR
Standard Time
Daylight
Saving Time
ATH
Standard Time
Daylight
Saving Time
Note
• When a calibration time is reached, the watch will receive the calibration signal only
if it is in either the Timekeeping Mode or World Time Mode. Reception 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 14 minutes every day when the
time in the Timekeeping Mode reaches each of the calibration times. Do not perform
any button operation within 14 minutes before or after 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.
To perform manual receive
W (WORK)
R (READY)
N (NO)
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). Five seconds
later, the second hand will resume normal operation, without any adjustment of the
hand setting.
• If the second hand is pointing to Y (YES) or N (NO), you can return to the
Timekeeping Mode by pressing A.
Viewing the Latest Signal Reception Results
You can use the procedure below to check whether or not the last signal receive
operation was successful.
To check the latest signal reception results
N (NO)
• If you adjust the time or date setting manually, the second hand will move to N (NO).
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem
The second
hand is pointing
at N (NO).
•
•
• The watch is not in the Timekeeping
• Signal reception results are reset at
•
The time setting
is incorrect
following signal
reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
• The Home City setting is not correct
• The home position of the hands is
1
2
3
1:00 am
2:00 am
3:00 am
3:00 am
4:00 am
4:00 am
5:00 am
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight*
2:00 am
2:00 am
3:00 am
3:00 am
4:00 am
1. Place the watch on a stable surface so its 12 o’clock
side is facing towards a window.
2. In the Timekeeping Mode, hold down A for about two
seconds until the watch beeps.
3. The second hand will move to R (READY) to indicate
that the watch is setting up for time calibration
reception.
• The second hand will move to W (WORK) and stay there
while actual reception is in progress.
• If signal reception is unstable during reception, the
second hand may move between W (WORK) and
R (READY).
• 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 as long as
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). Five seconds later, the hands will move to the
correct time.
Y (YES)
In the Timekeeping Mode, press A.
• 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 t o
receive any signal successfully, the second hand will
move to N (NO).
• The watch will return to the Timekeeping Mode after five
seconds or when you press A.
• The current receive result is cleared when the first auto
receive operation is performed on the following day. This
Y (YES)
means Y (YES) indicates successful signal reception
since the start of the current day.
Probable Cause
You changed the time setting manually.
You performed some button operation
during the auto receive operation.
Mode.
midnight each day.
Radio interference is often present
during the day time, which can interfere
with calibration signal reception.
for the area where you are using the
watch.
off.
4
4:00 am
5:00 am
5:00 am
Midnight*
Midnight*
1:00 am*
What you should do
Perform manual signal
•
receive at night or wait until
the next auto signal receive
operation is performed.
•
Enter the Timekeeping
Mode and try again.
• Check to make sure the
watch is in a location
where it can receive the
signal.
• Select the correct Home
City.
• Enter the home position
adjustment mode and
adjust the home position.
5
5:00 am
Midnight*
Midnight*
1:00 am*
1:00 am*
2:00 am*
6
Midnight*
1:00 am*
1:00 am*
2:00 am*
2:00 am*
3:00 am*
* Next day
Twin Stopwatch
Your watch has two stopwatches built in, each of which can measure elapsed time and
cumulative elapsed time in 1/100-second units up to 29 minutes, 59.99 seconds (30
minutes total).
• When the maximum limit is reached by either stopwatch, it returns to zero
automatically and timing continues from there.
•
A stopwatch elapsed time measurement operation continues even if you exit the
Stopwatch Mode.
• All of the operations in this section are performed in the Stopwatch Mode, which you
enter by pressing C.
Stopwatch B
Stopwatch minute hand
(Used for both A and B.)
Stopwatch A
Entering the Stopwatch Mode
Use the C button to enter the Stopwatch Mode.
• The second hand of Stopwatch A or Stopwatch B will move to 12 o’clock. “ST” will
appear on the digital display.
Elapsed Time Measurement in Progress
If you enter the Stopwatch Mode while elapsed time measurement is being performed,
the second hands of Stopwatch A and Stopwatch B will quickly move to the current
elapsed second. The stopwatch minute hand and the digital display will indicate the
minutes of the last stopwatch (A or B) you were viewing the last time you exited the
Stopwatch Mode.
Elapsed Time Measurement Not in Progress
Both stopwatches will be reset to their starting positions, with the stopwatch minute
hand stopped at 0 and the digital display showing 00. Stopwatch A will be standing by
to start timing. The hour and minute hands of the watch indicate the current
Timekeeping Mode time.
Elapsed Time Measurements
Perform the same steps for either of the stopwatches. Each stopwatch can be used to
perform a separate timing operation.
1. Press the A button to toggle between Stopwatch A and Stopwatch B.
• The stopwatch minute hand and the digital display indicate the minutes and
1/100 seconds for the currently selected stopwatch.
2. Press the B button to start and stop the currently selected stopwatch.
• Pressing the B button to restart the stopwatch without resetting it to all zeros
resumes elapsed time measurement from where it was last stopped.
• Switching from one stopwatch to another does not stop any ongoing timing
operation. The timing operations continue internally, even though they are not
indicated on the display.
Resetting a Stopwatch
• To reset the currently selected stopwatch to its starting position, make sure it is
stopped and then hold down the B button for about three seconds.
• To reset both of the stopwatches to their starting positions, make sure they are both
stopped and then hold down the A button for about three seconds.
Stopwatch A second hand
Stopwatch B second hand
Stopwatch 1/100 second
indicator
(Used for both A and B.)
World Time
City code
Second
hand
Current time (hour) in
the currently selected
World Time city
To view the time in another city
In the World Time Mode, use B to move the second hand to the city code you want to
select as the World Time city.
• The hour hand, minute hand, and second display will change automatically to the
applicable settings for the currently selected city code.
• All buttons (except for C for changing modes) are disabled while the hands and
second display are changing.
• For full information on city codes, see the “City Code Table”.
Minutes
To toggle a city code time between Standard Time and Daylight Saving Time
l
l
Hold down
▲
A for three
▲
seconds.
DST indicator
The World Time Mode shows you the current time in 29
cities (29 time zones) around the world.
• When you enter the World Time Mode, the second hand
will move to the city code that is currently selected as
the World Time city. At the same time, the hour and
minute hands will move to the current time in that city.
• If the current time shown for a city is wrong, check your
Home City settings and make the necessary changes.
• All of the operations in this section are performed in the
World Time Mode.
Seconds
1. In the World Time Mode, use B to move the second
hand to the city code whose Standard Time/Daylight
Saving Time setting you want to change.
2. Hold down A for about three seconds until the watch
l
l
l
l
l
l
l
l
l
beeps to toggle Daylight Saving Time (DST indicator
displayed) and Standard Time (DST indicator not
displayed).
• Note that you cannot switch between Standard Time and
Daylight Saving Time while UTC is selected as the city
code.
• Note that the Standard Time/Daylight Saving Time
setting affects only the currently displayed city code.
Other city codes are not affected.
2