MO0705-EA
Operation Guide 4765
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.
Keep the watch exposed to bright light
Bright Light
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Solar cell
• 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 result in some
watch functions to be disabled. If the battery goes dead, you will have to reconfigure 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.)
General Guide
• Press C to change from mode to mode.
• In any mode (except when a setting screen is on the display), press B to illuminate
the face of the watch.
Timekeeping Mode
The electricity generated by the solar cell of the watch is
stored by a built-in battery. Leaving or using the watch where
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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,
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. Charging is reduced significantly
if the face is only partially covered.
Bright Light
Electrical
energy
All
LEVEL 1
functions
LEVEL 2
enabled
LEVEL 3
Charge
LEVEL 4
Rechargeable battery
Battery Level Indicator
Press C.
▲
▲
LEVEL 1
LEVEL 2
LEVEL 3
Dis-
charge
LEVEL 4
World Time Mode
Some or all
functions
disabled
• The actual level at which some functions are disabled depends on the watch
model.
• Frequent display illumination can run down the battery quickly and require
charging. The following guidelines give an idea of the charging time required to
recover from a single illumination operation.
Approximately 5 minutes exposure to bright sunlight coming in through a window
Approximately 50 minutes exposure to indoor fluorescent lighting
• Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function
has turned off the display to conserve power.
• See “Power Saving Function” for more information.
About This Manual
• Depending on the model of your watch, display text
appears either as dark figures on a light background, or
light figures on a dark background. All sample displays
in this manual are shown using dark figures on a light
background.
• Button operations are indicated using the letters shown
in the illustration.
• Most of the display examples in this manual show only
the digital display, without the analog hands.
• 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.
Stopwatch ModeCountdown Timer Mode
▲
Hand Setting Mode
▲
Alarm Mode
▲
Radio-controlled Atomic Timekeeping
Day
Month Seconds
• 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 “Timekeeping”
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.
• The analog time of this watch is synchronized with the digital time. Because of this,
the analog time setting is automatically adjusted whenever you change the digital
setting. See “Analog Timekeeping” for more information.
To specify your Home City
City code
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German/U.K. Signal Japan Signal U.S. Signal
City
City
Code
Name
LIS
Lisbon
LON
London
MAD
Madrid
PAR
Pari s
ROM
Rome
BER
Berlin
STO
Stockholm
3. Press A to exit the setting screen.
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.
Current Time Setting
This watch adjusts its time setting automatically in
accordance with a time calibration signal. You can also
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 (the city where you
normally will use the watch). For more information, see
“To specify your Home City”.
1. In the Timekeeping Mode, hold down A the city code
starts to flash. This is the setting screen.
2. Press D(east) to select the city code you want to use
as your Home City.
• 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
Code
ATH
MOW
City
Name
Athens
Moscow
City
Code
HKG
BJS
TPE
SEL
TYO
City
Name
Hong Kong
Beijing
Taipei
Seoul
Tokyo
City
Code
HNL
ANC
YVR
LAX
YEA
DEN
MEX
City
Name
Honolulu
Anchorage
Vancouver
Los Angeles
Edmonton
Denver
Mexico City
City
Code
YWG
CHI
MIA
YTO
NYC
YHZ
YYT
City
Name
Winnipeg
Chicago
Miami
Toronto
New York
Halifax
St. Johns
▲
Important!
• Normally, your watch should show the correct time as soon as you select your Home
City code. If it does not, it should adjust automatically after the next auto receive
operation (in the middle of the night). You can also perform manual receive or you
can set the time manually.
• The watch will receive the time calibration signal automatically from the applicable
transmitter (in the middle of the night) and update its settings accordingly. For
information about the relationship between city codes and transmitters, see “Home
City Codes and Transmitters”.
• Under factory default settings, auto receive is turned off for all of the following city
codes: MOW (Moscow), HKG (Hong Kong), BJS (Beijing), HNL (Honolulu), and
ANC (Anchorage). For details about turning on auto receive for these city codes, see
“To turn auto receive on and off”.
• You can disable time signal reception, if you want. See “To turn auto receive on and
off” for more information.
• See the maps under “Reception Ranges” for information about the reception ranges
of the watch.
• If you are in an area that does not use Daylight Saving Time (summertime), turn off
the DST setting.
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.
1
Operation Guide 4765
• 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.
• 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
LIS, LON,
MAD, PAR, ROM, BER,
STO, ATH, MOW*
HKG*, BJS*, TPE,
SEL, TYO
HNL*, ANC*, YVR,
LAX, YEA, DEN, MEX,
YWG, CHI, MIA, YTO,
NYC,YHZ, YYT
* The areas covered by the MOW, HKG, BJS, 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
• 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.
• 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 City, and whether standard time or Daylight Saving Time is selected
for your Home City.
Your Home City Auto Receive Start Times
LIS, LON
MAD, PAR, ROM,
BER, STO
ATH
MOW
HKG, BJS, TPE,
SEL, TYO
HNL, ANC, YVR,
LAX, YEA, DEN,
MEX, YWG, CHI,
MIA, YTO, NYC,
YHZ, YYT
Inside a
vehicle
Home City Code
U.K. and German Signals
500 kilometers
Fukuoka/Saga
1,000 kilometers
Standard Time
Daylight
Saving Time
Standard Time
Daylight
Saving Time
Standard Time
Daylight
Saving Time
Standard Time
Daylight
Saving Time
Standard Time
Standard Time
Daylight
Saving Time
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 a
construction
site, airport,
or other
sources of
electrical
noise
Transmitter
Mainflingen
Japan Signal
123456
1:00 am
2:00 am
2:00 am
3:00 am
2:00 am
3:00 am
3:00 am
4:00 am
3:00 am
4:00 am
4:00 am
5:00 am
4:00 am
5:00 am
5:00 am
Midnight
next day
Midnight
1:00 am
Midnight
1:00 am
Near hightension
power lines
U.S. Signal
500 kilometers
Fukushima
1,000 kilometers
3:00 am
4:00 am
4:00 am
5:00 am
5:00 am
Midnight
next day
Midnight
next day
1:00 am
next day
2:00 am
2:00 am
Frequency
60.0 kHz
77.5 kHz
40.0 kHz
60.0 kHz
60.0 kHz
4:00 am
5:00 am
5:00 am
Midnight
next day
Midnight
next day
1:00 am
next day
1:00 am
next day
2:00 am
next day
3:00 am
3:00 am
5:00 am
Midnight
next day
Midnight
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
4:00 am
4:00 am
Among or
behind
mountains
2,000 miles
(3,000 kilometers)
600 miles
(1,000 kilometers)
Fort Collins
Midnight
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
3:00 am
next day
4:00 am
next day
5:00 am
5:00 am
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 receive 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 one to five minutes everyday when the
time in the Timekeeping Mode reaches each of the calibration times. Avoid
performing any button operation within five 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 actually is the correct time.
• Calibration signal reception is disabled while a countdown timer operation is
in progress.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received. For
best reception, be sure to keep the watch in a location where signal strength is
strongest.
Receiving indicator
Weak
(Level 0)
• Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal receive operations.
• Even in an area where signal strength is strong, it takes about 10 seconds for signal
reception to stabilize enough for the receiving indicator to indicate signal strength.
Transmitter Indicator
Transmitter indicator
To perform manual receive
Receiving
Receiving indicator
Transmitter indicator
Receive successful
Receive date
Receive time
Receive failed
To turn auto receive on and off
On/Off status
To check the latest signal reception results
Receive date
Receive time
During signal reception, a transmitter indicator will flash to
show you which signal is currently being received by the
watch. After signal reception is complete, the indicator of
the transmitter from which the signal was received will
remain on, without flashing.
• The following shows the meaning of each of the
transmitter indicator names.
JP40: Fukushima (Japan)
JP60: Fukuoka/Saga (Japan)
US60: Fort Collins, Colorado (the United States)
GE77.5: Mainflingen (Germany)
UK60: Rugby (England)
• The transmitter indicator turns off automatically at the
start of the first auto receive operation of a new day. The
time of the first auto receive operation of a new day
depends on your currently selected Home City.
1. Enter the Timekeeping Mode.
2. Place the watch on a stable surface so its 12 o’clock
side is facing towards a window.
3. Hold down D for about two seconds until the Receiving
Indicator appears on the display.
• The indicator of the transmitter whose signal the watch
is attempting to receive will flash.
• Time calibration signal reception takes from two to 14
minutes. Take care that you do not perform any button
operations or move the watch during this time.
• If the receive operation is successful, the reception date
and time appear on the display, along with the GET
indicator. The indicator of the transmitter whose signal
the watch received will also be indicated.
The watch will enter the Timekeeping Mode if you press
D or if you do not perform any button operation for
about one or two minutes.
• If the current reception fails, the display shows the ERR
indicator.
The watch will enter the Timekeeping Mode without
changing the time setting if you press D or if you do not
perform any button operation for about one or two
minutes.
1. In the Timekeeping Mode, press D to display the Last
Signal screen.
2. Hold down A until the current auto receive setting (ON
or OFF) start to flash. This is the setting screen.
• Note that the setting screen will not appear if the
currently selected Home City is one that does not
support time calibration reception.
3. Press D to toggle auto receive on (ON) and off (OFF).
4. Press A to exit the setting screen.
• For information about city codes that support signal
receive, see “To specify your Home City”.
In the Timekeeping Mode, press D to display the Last
Signal screen.
• When receive is successful, the display shows the time
and date that receive was successful. - - : - - indicates
that none of the reception operations were successful.
• To return to the Timekeeping Mode, press D.
Strong
(Level 3)
2