MO0601-EA
Operation Guide 3024
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 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.)
The electricity generated by the solar cell of the watch is
stored by a built-in battery. Leaving or using the watch
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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,
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
• 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
(Light)
• 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.
• 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.
Charge
Rechargeable battery
Dis-
charge
General Guide
• Press B to change from mode to mode.
• In any mode (except when a setting screen is on the display), press D to illuminate
the display.
Timekeeping Mode
Press B.
▲
Radio-controlled Atomic Timekeeping
PM indicator
DST indicator
Hour : Minutes : Seconds
• The first thing you should do after purchasing this watch is to set your Home City,
which is the city where you normally will use the watch. For more information, see
“To set your Home City” below.
• When using the watch outside of the range of the transmitter in Fort Collins, you
need to adjust the time manually as required. See “Timekeeping” for information
about manual settings.
To set your Home City
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City code
This watch receives a time calibration signal and updates
its time setting accordingly. The time calibration signal
includes both Standard Time and Daylight Saving Time
(summer time) data.
• This watch is designed to pick up the time calibration
signal transmitted from Fort Collins, Colorado (USA).
Reception is possible within North America
The term “North America” in this User’s Guide refers to the
*
area that consists of Canada, the continental United States,
and Mexico.
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.
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Use C(east) and D(west) to select the city code you
want to use as your Home City.
• The following are the city codes for major cities in
North America.
: Vancouver
YVR
LAX: Los Angeles, San Francisco, Las Vegas,
Seattle/Tacoma, Tijuana
YEA: Edmonton
DEN: Denver, El Paso, Culiacan
MEX: Mexico City
YWG: Winnipeg
CHI: Chicago, Houston, Dallas/Fort Worth,
New Orleans
MIA: Miami
YTO: Toronto
NYC: New York, Detroit, Boston, Montreal
YHZ: Halifax
YYT: St. Johns
3. Press A to exit the setting screen.
.
*
(Light)
World Time Mode
▲
Stopwatch Mode
▲
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 also can perform manual receive or you
can set the time manually.
• If you are in an area that does not use Daylight Saving Time (summer time), 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 picks up the time calibration signal automatically six
times a day at midnight, 1:00 a.m., 2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 a.m.
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.
• The watch should not be on its side or facing the wrong way.
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances or
office
equipment,
or a mobile
phone
Alarm Mode
▲
Countdown Timer Mode
Near a
construction
site, airport, or
other sources
of electrical
noise
Near hightension
power lines
▲
Among or
behind
mountains
1
Operation Guide 3024
• Signal reception is normally better at night than during the day.
• Time calibration signal reception takes from two to five minutes. Take care that you
do not perform any button operations or move the watch during this time.
• This watch is designed to pick up the time calibration signal transmitted from Fort
Collins, Colorado (USA).
Reception Range
600 miles
• At distances further than about 600 miles (1,000 kilometers) from the transmitter,
signal reception may not be possible during certain times of year or times of day.
Radio interferance may also cause problems with reception.
• Even when the watch is within the reception range of the transmitter, signal
reception is 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 Receive Troubleshooting” if you experience
problems with time calibration signal reception.
About Auto Receive
When auto receive is turned on, the watch starts to receive the time calibration signal
automatically when the time in the Timekeeping Mode reaches midnight, 1:00 a.m. ,
2:00 a.m., 3:00 a.m., 4:00 a.m., and 5:00 a.m. (calibration times).
When any auto receive is successful, the remaining auto receive operations are not
performed.
Note
• Auto receive works only while the watch is in the Timekeeping Mode or World Time
Mode. Auto receive is not performed if an auto receive time is reached while an
alarm is sounding, while a countdown timer operation is in progress, or while a
setting screen (a screen with a flashing setting) is on the display.
• 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.
• When auto receive is turned on, the watch receives the calibration signal for two to
five minutes everyday when the Timekeeping Mode time reaches each of the
calibration times. Do not perform 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 time kept 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
Timekeeping Mode time is actually the correct time.
• If more than one auto receive is successful, the watch uses the data from the last
successful receive to adjust settings. When only one reception is successful, the
watch uses the data of the successful reception.
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
• 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.
• Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal receive operations.
To perform manual receive
Receiving indicator
To turn auto receive on and off
On/Off status
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Weak
(Level 0)
1. Place the watch on a stable surface so its top (12
o’clock side) is facing towards a window.
2. In the Timekeeping Mode, hold down C for about two
seconds until RC! appears on the display.
• Time calibration signal reception takes from two to five
minutes. Take care that you do not perform any button
operations or move the watch during this time.
• After signal reception is complete, the display of the
watch changes to the Last Signal screen.
Note
• To interrupt a receive operation and return to the
Timekeeping Mode, press C.
• If the receive operation is unsuccessful, the message
ERR appears on the display for about one or two
minutes. After that, the watch returns to the Timekeeping
Mode.
• You can also change from the Last Signal or
to the normal timekeeping screen by pressing C.
1. In the Timekeeping Mode, press C to display the Last
Signal screen.
2. Hold down A until the current auto receive setting (
or
) starts to flash. This is the setting screen.
OFF
• 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 C to toggle auto receive on (
4. Press A to exit the setting screen.
• For information about city codes that support signal
receive, see “To set your Home City”.
2,000 miles
Fort Collins
ON
Strong
(Level 3)
ERR screen
) and off (
OFF
ON
).
To display the Last Signal screen
In the Timekeeping Mode, press C to display the Last Signal screen (indicated by
GET). The Last Signal screen shows the date and time of the last successful time
calibration signal reception.
Hour : Minutes : Seconds
PM indicator
Press C.
DST indicator
Signal Receive Troubleshooting
Check the following points whenever you experience problems with calibration signal
reception.
Problem
Cannot perform
manual receive.
Time setting is
incorrect
following signal
reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
Probable Cause
• The watch is not in the Timekeeping
Mode.
• Your current Home City is not one of the
following city codes:
YVR, LAX, YEA, DEN, MEX, YWG,
CHI, MIA, YTO, NYC, YHZ, or YYT.
• If the time is one hour off, the DST
setting may be incorrect.
• The Home City code setting is not
correct for the area where you are using
the watch.
▲
Receive time
▲
Last Signal Screen
• Enter the Timekeeping Mode
and try again.
• Select YVR, LAX, YEA, DEN,
MEX, YWG, CHI, MIA, YTO,
NYC, YHZ, or YYT as your
Home City.
• Change the DST setting to
Auto DST.
• Select the correct Home City
code.
Receive date
What you should do
World Time
Current time in
selected city
City code
To view the time in another city
While in the World Time Mode, press C to scroll eastward through the city codes
(time zones).
• For full information on city codes, see “City Code Table”.
To toggle a city code time between Standard Time and Daylight Saving Time
DST indicator
The World Time Mode shows you the current time in 48
cities (29 time zones) around the world.
• If the current time shown for a city is wrong, check your
Home City time settings and make the necessary
changes.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing B.
1. In the World Time Mode, use C to display the city code
(time zone) whose Standard Time/Daylight Saving Time
setting you want to change.
2. Hold down A to toggle Daylight Saving Time (DST
indicator displayed) and Standard Time (DST indicator
not displayed).
• The DST indicator will appear whenever you display a
city code for which Daylight Saving Time is turned on.
• Note that the DST/Standard Time setting affects only the
currently displayed city code. Other city codes are not
affected.
Alarms
Alarm time
(Hour : Minutes)
Alarm number
To set an alarm time
4. While a setting is flashing, use C (+) and D (–) to change it.
5. Press A to exit the setting screen.
• When setting the alarm time using the 12-hour format, take care to set the time
correctly as a.m. (no indicator) or p.m. (P indicator).
The Alarm Mode gives you a choice of four one-time
alarms and one snooze alarm.
Also use the Alarm Mode to turn the Hourly Time Signal
(
SIG) on and off.
• There are five alarms numbered
and
SNZ. You can configure SNZ as a snooze alarm
only. Alarms
time alarms only.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing B.
1. In the Alarm Mode, use C to scroll through the alarm
2. After you select an alarm, hold down A until the hour
3. Use B to move the flashing between the hour and
AL1 through AL4 can be used as one-
screens until the one whose time you want to set is
displayed.
AL1 AL2 AL3
SIG SNZ AL4
setting of the alarm time starts to flash, which indicates
the setting screen.
• This operation turns on the alarm automatically.
minute settings.
AL1 through AL4,
2