MO0407-EA
Operation Guide 3328
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 and keep it on hand for later reference
when necessary.
• This watch does not have a time zone that corresponds to the Greenwich
Mean Time differential of –3.5 hours. Because of this, the radio-controlled
timekeeping and World Time functions will not display the correct time for
Newfoundland, Canada.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to bright
light.
• Be sure to read “Power Supply” for important information you need to know
when exposing the watch to bright light.
If the digital display of the watch is blank...
Digital display
Power saving on indicator
General Guide
• Press C to change from mode to mode.
• In any mode, press B to illuminate the face of the watch.
• The Battery Level Screen shows the current battery level. See “Battery Power
Levels” for more information.
Timekeeping Mode
If the Power Saving on indicator is flashing on the display,
it means that the Power Saving function has turned off the
display to conserve power. Power Saving automatically
turns off the display and enters a sleep state whenever
the watch is left for a certain period where it is dark.
• The initial factory default setting is Power Saving on.
• The watch will recover from the sleep state if you move it
to a well-lit area,
the watch towards your face for reading.
It can take up to two seconds for the display to turn on
*
• See “Power Saving” for more information.
Press C.
if you press any button, or if you angle
*
Battery Level Screen
▲
▲
About This Manual
Hour hand
.
Minute hand
Digital display
World Time Mode
▲
Hand Setting Mode
• 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.
Alarm Mode
▲
Stopwatch Mode
▲
STW
▲
Radio-controlled Atomic Timekeeping
Hour hand
Minute hand
WED
Day of week
Current Time Setting
This watch automatically adjusts its digital time setting 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 set your Home City,
• When using the watch outside the range of the U.S. transmitter, you have to adjust
• The analog time of this watch is synchronized with the digital time. Because of this,
To set your Home City
Note
• Normally, your watch should show the correct time as soon as you select your Home
• See the map under “Reception Range” for information about the reception range of
• The DST indicator on the display indicates that Daylight Saving Time (summer time)
• If
Month. Day
which is the city where you will normally use the watch. For more information, see
“To set your Home City” below.
the current time setting manually as required. See “Timekeeping” for more
information about manual time setting.
the analog time setting is automatically adjusted whenever you change the digital
setting. See “Analog Timekeeping” for more information.
City code
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DST indicator
City code. If it does not, it should adjust automatically after the next auto receive (in
the middle of the night). You can also perform manual receive or you can set the time
manually.
the watch.
is in effect for the selected Home City code. If you are in an area that does not use
Daylight Saving Time (summer time), turn off the DST setting.
ON or OFF starts to flash in place of the city code when you hold down A in
step 1 of the above procedure, press A again to exit the setting screen. After that,
press D and then perform step 1 again.
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 in the United States (Fort Collins,
Colorado).
• 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.
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press D to scroll eastwardly through the city codes
until the one you want to use as your Home City is
displayed.
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• The following are the city codes of the major cities in
North America where signal reception is possible.
: Los Angeles, San Francisco, Las Vegas,
LAX
Seattle/Tacoma, Vancouver, Tijuana
: Denver, El Paso, Edmonton, Culiacan
DEN
: Chicago, Houston, Dallas/Fort Worth,
CHI
New Orleans, Winnipeg, Mexico City
: New York, Detroit, Miami, Boston, Montreal
NYC
• Note that this watch does not have a city code that
corresponds to Newfoundland.
3. Press A to exit the setting screen.
.
*
To display the digital time and last signal screens
In the Timekeeping Mode, press A or D to change the digital screen contents as
shown below.
• The last signal screens show the date and time of the last successful time calibration
signal reception. If time calibration signal reception has not been successful since
the battery level dropped to Level 4 or since the battery was replaced,
shown in place of the receive date and receive time in the last signal screens.
Seconds Date
Press A.
▲
A
▲
Time
PM indicator
• The last signal screens continue to cycle on the display for about one or two minutes.
After that, the Timekeeping Mode screen reappears.
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal:
auto receive
• Auto Receive
With auto receive, the watch automatically picks up the time calibration signal four
times a day at midnight, 2:00 a.m., 3:00 a.m., and 4:00 a.m. For more information, see
“About Auto Receive”.
• Manual Receive
Manual receive lets you start a time calibration signal reception 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.
▲
A
Hour : Minutes
and
manual receive
2 seconds
Day of week
.
Press D.
▲
Month. Day
Last Signal Screens
▲
is
---
2 seconds
Receive date
Receive time
1
Operation Guide 3328
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Inside or
among
buildings
• Signal reception is normally better at night than during the day.
• Time calibration signal reception takes from two to six minutes. Take care that you
do not perform any button operations or move the watch during this time.
Reception Range
2,000 miles
About Auto Receive
When auto receive is turned on, the watch automatically starts to receive the time
calibration signal when the time in the Timekeeping Mode reaches 0:00 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.
Note
• Auto receive is turned on whenever
Home City code. You can also turn auto receive on and off manually. See “To turn
auto receive on and off” for more information.
• Auto receive is performed only if the watch is in the Timekeeping Mode or World
Time Mode when one of the calibration times is reached. It is not performed if a
calibration time is reached while an alarm is sounding, or while you are configuring
settings (while settings are flashing on the display).
• 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 easily receive the signal.
• When auto receive is turned on, the watch receives the calibration signal for two to
six minutes everyday when the time in the Timekeeping Mode reaches each of the
calibration times. Do not perform any button operation within six 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
shown on the digital display. 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.
• When two, three, or four receptions are successful, the watch uses the data of the
last reception for calibration. 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.
• 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 reception.
To perform manual receive
Receiving indicator
• After signal reception is complete, the watch beeps and the display of the watch
changes to the last signal screen.
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press D.
• If the receive operation is unsuccessful,
or two minutes. After that, the watch returns to the Timekeeping Mode.
• You can also change from the last signal or ERR screen to the normal timekeeping
screen by pressing D.
Inside a
vehicle
600 miles
Fort Collins
Receiving indicator
Near
household
appliances,
office
equipment,
or a mobile
phone
• This watch receives the time calibration signal
transmitted in the U.S. (Fort Collins, Colorado).
• 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 interference may also cause
problems with reception.
• See the information under “Signal Reception
Troubleshooting” if you experience problems with time
calibration signal reception.
Weak
1. Place the watch on a stable surface so its top (12
o’clock side) is facing towards a window.
2. While any screen other than the last signal screen is on
the display in the Timekeeping Mode, hold down D for
about two seconds until the watch beeps.
3. Release D and the receiving indicator will appear on
the display to indicate that signal reception has started.
• Time calibration signal reception takes from two to six
minutes. Take care that you do not perform any button
operations or move the watch during this time.
Near a
construction
site, airport, or
other sources
of electrical
noise
LAX, DEN, CHI
ERR
Near hightension
power lines
, or
NYC
appears on the display for about one
Among or
behind
mountains
is selected as the
Strong
To turn auto receive on and off
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3. Press D to toggle auto receive on (
4. Press A to exit the setting screen and return to the last signal screen.
• If you want to the return to the Timekeeping Mode screen, press D.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem
Cannot perform
manual receive.
The watch does
not perform auto
receive.
The time setting
is incorrect
following signal
reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
1. In the Timekeeping Mode, press D to display the last
signal screen.
2. Hold down A until the current auto receive setting (
or
) flashes on the display. This is the setting
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• The watch is not in the Timekeeping
Mode.
• Your current Home City is not one of the
following city codes: LAX, DEN,
CHI, or NYC.
• A button operation was performed or the
watch was moved while signal reception
was in progress.
• The watch was not in the Timekeeping
Mode or World Time Mode when a
calibration time arrived.
• Auto receive is turned off.
• 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.
OFF
screen.
• If holding down A does not display the setting
screen, check the current Home City code setting.
Press D to return to the Timekeeping Mode screen
and then refer to “To set your Home City” for
information about city codes that support signal
reception.
) and off (
ON
Probable Cause
OFF
).
What you should do
• Enter the Timekeeping Mode
and try again.
• Select LAX, DEN, CHI, or
NYC as your Home City.
• Do not perform any button
operations or move the watch
while signal reception is in
progress.
• Check to make sure the
watch is in a location where it
can receive the signal.
• Perform manual signal
receive or wait until the next
auto signal receive operation
is performed.
• Turn on auto receive.
• Change the DST setting to
Auto DST.
• Select the correct Home City
code.
ON
World Time
City code
TYO
Current time in the
zone of the
selected city code
To view the time in another city
In the World Time Mode, press D to scroll eastwardly through city codes (time
zones).
• The city code is displayed for about two seconds, and then it is replaced with the
current time for that city code. Pressing A while the time is displayed in the World
Time Mode causes the city code of the currently selected zone to appear.
• When the currently selected time zone is one that includes mostly ocean, a value
indicating the zone's Greenwich Mean Time differential appears in place of a city
code.
• If the current time shown for a city is wrong, check your Home City time settings and
make the necessary changes.
To toggle a city code time between Standard Time and Daylight Saving Time
DST indicator
• You cannot toggle between Daylight Saving Time and Standard Time if the displayed
city code is
GMT
Timekeeping Mode. To change the DST setting of your Home City, use the
procedure under “To change the Daylight Saving Time (summer time) setting”.
• Note that the DST/Standard Time setting affects only the currently displayed city
code. Other city codes are not affected.
World Time digitally displays the current time in 30 cities
(29 time zones) around the world.
• The watch will perform a signal reception even if it is in
the World Time Mode when a calibration time is
reached. If this happens, the World Time Mode time
settings will be adjusted in accordance with the
Timekeeping Mode’s Home City time.
• For full information on city codes, see the “City Code
Tab l e”.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
1. In the World Time Mode, use D to display the city
code (time zone) whose Standard Time/Daylight Saving
Time setting you want to change.
2. Hold down A to toggle between Daylight Saving Time
(DST indicator displayed) and Standard Time (DST
indicator not displayed).
• The DST indicator appears on the display whenever you
display a city code for which Daylight Saving Time is
turned on.
or the city code that is currently selected as the Home City in the
2