MO0706-EA
Operation Guide 4766
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.
••
• This watch does not have a city code that corresponds to the Greenwich
••
Mean Time differential of –3.5 hours. Because of this, the radio-controlled
atomic timekeeping function will not display the correct time for
Newfoundland, Canada.
Keep the watch exposed to bright light
Bright light
l
l
l
l
l
l
l
• The watch continues to operate, even when it is not exposed to light. Leaving the
watch in the dark can cause the battery to run down, which will cause some watch
functions to be disabled. If the battery goes dead, you will have to re-configure watch
settings after recharging. To ensure normal watch operation, be sure to keep it
exposed to light as much as possible.
Battery charges in the light. Battery discharges in the dark.
Solar cell
(Converts light to
electrical power.)
Charge
The electricity generated by the solar cell of the watch is
l
l
stored by a built-in battery. Leaving or using the watch
l
l
where it is not exposed to light causes the battery to run
down. Make sure the watch is exposed to light as much as
possible.
• When you are not wearing the watch on your wrist,
Solar cell
Rechargeable battery
position the face so it is pointed at a source of bright
light.
• You should try to keep the watch outside of your sleeve
as much as possible. Even if the face of the watch is
blocked only partially from light, charging will be reduced
significantly.
Bright light
LEVEL 1
LEVEL 2
LEVEL 3
Electrical
energy
All
functions
enabled.
All functions disabled,
except for analog timekeeping
and stopwatch .
charge
Dis-
LEVEL 1
LEVEL 2
LEVEL 3
All
functions
disabled.
• The actual level at which some functions are disabled depends on the watch model.
• Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.
If the analog hands aren’t moving...
If the analog hands aren’t moving, it means that the power saving mode has stopped
them to save battery power.
• See “Power Saving” for more information.
• The hands also stop whenever the battery level reaches Level 3.
About This Manual
Stopwatch second hand
Hour hand
24-hour hand
Minute hand
Date
Second 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.
30
Day of the
week hand
General Guide
Manual Receive Receive Status Check
Hold down A
30
for about two seconds.
▲
Transmitter Change
Time/Date Adjustment
• About 1.5 seconds after you enter the World Time Mode from the Timekeeping
Mode, the watch’s hands will start to move to the time setting for the World Time
Mode. All button operations are disabled while the hands are moving.
Press any button.
30
Hold down A
for about five seconds.
▲
Press A.
30
▲
▲
▲
▲
Press A.
Timekeeping Mode
30
Radio-controlled Atomic Timekeeping
This watch receives a time calibration signal and updates its time setting accordingly.
• Supported time calibration signals: Germany (Mainflingen), England (Rugby), United
States (Fort Collins), Japan (Fukushima or Fukuoka/Saga).
• 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 will normally 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.
• The U.S. time calibration signal can be picked up by the watch while in North
America. The term “North America” in this manual refers to the area that consists of
Canada, the continental United States, and Mexico.
To specify your Home City
second hand
City codeStopwatch
1. In the Timekeeping Mode, hold down A for about five
seconds until the stopwatch second hand moves to the
city code of the currently selected Home City. This
indicates the watch is in the setting mode.
2. Use D to change the Home City setting.
• Each press of D causes the stopwatch second hand
30
to advance clockwise to the next city code.
• All hands (except for the second hand) and the date
display will change automatically to the applicable
settings for the currently selected city code. All button
operations are disabled while the hands and date
display are changing.
• Time calibration signal reception is supported when
any one of the city codes shown in the table below is
selected as your Home City.
“Timekeeping”
Press
3
0
Press D.
(When the stopwatch
is reset to all zeros.)
City
City Name
Code
HNL
Honolulu
ANC
Anchorage
Los Angeles
LAX
B or D.
Press C.
▲
City
Code
HKG
TYO
▲
City Name
Hong Kong
Tokyo
3
0
German/U.K. Signal Japan Signal U.S. Signal
City
City Name
Code
LON
London
PAR
Pari s
ATH
Athens
• 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.
• Note that this watch does not have a city code that corresponds to Newfoundland.
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.
• You can also change the Home City setting by swapping the current Home City and
the currently selected World Time City. For details, see “Swapping your Home City
and World Time City”.
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
The time calibration signals transmitted from Mainflingen (Germany), Rugby
(England), or Fort Collins (the United States) include both Standard Time and DST
data. When the Auto DST setting is turned on, the watch switches between Standard
Time and DST (summer time) automatically in accordance with the signals.
• Though the time calibration signal transmitted by the Fukushima and Fukuoka/Saga,
Japan transmitters include summer time data, summer time currently is not
implemented in Japan (as of 2007).
• The default DST setting is Auto DST (AUTO/AT) whenever you select LON, PA R,
ATH , ANC, LAX, DEN, CHI, NYC, or TYO as your Home City code.
• If you experience problems receiving the time calibration signal in your area, it
probably is best to switch between Standard Time and Daylight Saving Time
(summer time) manually. For more information, see “To set the time and date
manually”.
Stopwatch ModeTimekeeping ModeWorld Time Mode
▲
▲
City
Code
DEN
CHI
NYC
City Name
Denver
Chicago
New York
3
0
1
Operation Guide 4766
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”.
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.
Make sure there are no metal objects nearby.
12 o’clock
or
• Make sure the watch is facing the right way.
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
60.0 kHz
77.5 kHz
40.0 kHz
60.0 kHz
60.0 kHz
Among or
behind
mountains
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
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.
• The time calibration signal the watch will attempt to pick up depends on its current
Home City code setting as shown below. If you use the watch in Japan or Europe
(each of which has two different transmitter locations), it will try to receive the time
calibration signal from one of the transmitters in your current location. If it cannot
receive the signal, it will then try to receive the time calibration signal from the other
transmitter.
Home City Codes and Transmitters
LON, PAR, ATH
HKG*, TYO
HNL*, ANC*, LAX,
DEN, CHI, NYC
* The areas covered by the HKG, HNL, and ANC city codes are quite far from the
time calibration signal transmitters, and so certain conditions may cause problems
with signal reception.
Reception Ranges
1,500 kilometers
Rugby
500 kilometers
Inside a
vehicle
Home City Code
U.K. and German Signals
500 kilometers
Fukuoka/Saga
1,000 kilometers
Transmitter
Mainflingen
Near a
construction
site, airport, or
other sources
of electrical
noise
Near
household
appliances,
office
equipment,
or a mobile
phone
Rugby (England)
Mainflingen (Germany)
Fukushima (Japan)
Fukuoka/Saga (Japan)
Fort Collins, Colorado
(the United States)
Near hightension
power lines
U.S. Signal
500 kilometers
Fukushima
1,000 kilometers
Frequency
Japan Signal
• Signal reception may not be possible at the distances noted below during certain
times of the year or day. Radio interference may also cause problems with reception.
Mainflingen (Germany) or Rugby (England) transmitters: 500 kilometers (310
miles)
Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
• Even when the watch is within the reception range of the transmitter, signal
reception will be impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source.
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
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
PAR
ATH
HKG, TYO
HNL, ANC, LAX,
DEN, CHI, NYC
Note
• Auto receive is supported in all modes except while a stopwatch elapsed time
operation is in progress.
• 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 everyday 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 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.
Standard Time
Daylight
Saving Time
Standard Time
Daylight
Saving Time
Standard Time
Daylight
Saving Time
Standard Time
Standard Time
Daylight
Saving Time
To perform manual receive
3
0
W(WORK)
• After signal reception is successful, the watch adjusts its hour, minute, 24-hour
hand, and second hand settings, and then returns to the Timekeeping Mode. Next,
the stopwatch second hand moves to Y (YES) momentarily to indicate that signal
reception was successful. After about five seconds, the stopwatch second hand
moves to 12 o’clock.
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press any
button.
• If signal reception fails for some reason, the watch returns to normal timekeeping
without making any adjustments. Next, the stopwatch second hand moves to N (NO)
momentarily to indicate that signal reception failed. After about five seconds, the
stopwatch second hand moves to 12 o’clock.
• If the stopwatch second hand is pointing to Y (YES) or N (NO), you can return to the
Timekeeping Mode by pressing any button.
Viewing the Latest Signal Reception Results
You can use the procedure below to check whether or not the last signal receive
operation was successful.
R(READY)
Y(YES)
30
N(NO)
To check the latest signal reception results
• The current receive result is cleared when the first auto receive operation is
performed on the following day. This means Y (YES) indicates successful signal
reception since the start of the current day.
• If you adjust the time or date setting manually, the stopwatch second hand will move
to N (NO).
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
The
stopwatch
second hand
is pointing at
N (NO).
Time setting
is incorrect
following
signal
reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
• You changed the time setting
manually.
You performed some button operation
•
during the auto receive operation.
• The stopwatch is performing an
elapsed time measurement operation.
• Signal reception results are reset at
the first time of the next receive
period.
• The Home City setting is not correct
for the area where you are using
the watch.
The home position of the hands is off.
•
123456
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
2:00 am
3:00 am
4:00 am
5:00 am
3:00 am
4:00 am
5:00 am
Midnight
3:00 am
4:00 am
4:00 am
5:00 am
Midnight
1:00 am
Midnight
1:00 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.
3. The stopwatch second hand will move to R (READY) to
indicate that the watch is setting up for time calibration
reception.
• The stopwatch second hand will move to W (WORK)
and stay there while actual reception is in progress.
• The hour, minute, and 24-hour hands all continue to
keep time normally.
• The second hand will stop at “0”.
Some models show “60” instead of “0”.
*
• 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.
In the Timekeeping Mode, press A.
• If the watch was able to perform a successful signal
receive operation during the last receive period, the
stopwatch second hand will move to Y (YES).
If the watch has been unable to receive any signal
successfully, the stopwatch second hand will move to
N (NO).
• The watch will return to the Timekeeping Mode after five
seconds or when you press A.
next day
5:00 am
Midnight
next day
Midnight
1:00 am
next day
next day
2:00 am
3:00 am
2:00 am
3:00 am
*
What you should doProblem Probable Cause
• Perform manual signal
receive or wait until the next
auto signal receive operation
is performed.
• Stop the stopwatch operation.
• 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.
Midnight
next day
Midnight
next day
1:00 am
next day
1:00 am
next day
2:00 am
next day
4:00 am
4:00 am
next day
1:00 am
next day
1:00 am
next day
2:00 am
next day
2:00 am
next day
3:00 am
next day
5:00 am
5:00 am
2