MO0804-EA
Operation Guide 3353 3354 5053
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to carefully read this manual and keep it on hand for later reference
when necessary.
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 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
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.
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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
LEVEL 4
Rechargeable battery
charge
Dis-
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
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
• 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.
General Guide
• Press C to change from mode to mode.
• In any mode, press B to illuminate the display.
Timekeeping Mode
Press C.
Hand Setting Mode
▲
▲
Radio-controlled Atomic Timekeeping
Hour hand
Minute hand
Day
Day of week
Second hand
Current Time Setting
This watch automatically adjusts its 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,
which is the city where you will normally use the watch. For more information, see
“To set your Home City” below.
• When using the watch in an area that is outside of the range of the transmitters in
Anthorn and Mainflingen, you need to manually adjust the time as required. See
“Timekeeping” for information about manual settings.
• 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 set your Home City
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Transmitter indicator
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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 Anthorn, England and the signal
from Mainflingen, Germany.
1. In the Timekeeping Mode, hold down A until the
transmitter indicator (
which indicates the setting screen.
• If the displayed transmitter indicator shows something
other than
advancing to the next step.
• The second hand will move at high speed to the 12
o’clock position, where it will stop.
2. Press C to display the city code setting screen.
3. Use D (east) and B (west) to select the city code you
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want to use as your Home City.
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• The following are the city codes for major cities in the
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Western Europe time zones.
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LON: London
PAR and BER: Paris, Berlin, Milan, Rome,
ATH: Athens
AT, DCF
AT, use D to display AT before
Amsterdam, Hamburg, Frankfurt,
Vienna, Barcelona, Madrid
, MSF) starts to flash,
Battery Level Indicator
▲
▲
World Time Mode
or
Alarm Mode
Stopwatch Mode
▲
4. Press A twice to exit the setting screen.
• The first press of A displays the 12/24-hour setting screen. Pressing A again exits
the setting screen.
• The second hand will advance at high speed to the correct position in accordance
with seconds count of the digital time, and resume normal movement from there.
• 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 (in
the middle of the night). You can also 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.
• See “Transmitters” for details about the transmitter indicator.
To display the digital time and last signal screen
• In the Timekeeping Mode, press A to cycle through the digital time screens as
shown below.
• In the Timekeeping Mode, press D to display the last signal screen. The last signal
screen shows the date and time of the last successful time calibration signal
reception.
Date Screen
Day of week
▲
Last Signal Screen
Day
Press D.
▲
Reception date
Press A.
▲
A
2 seconds
Receiving
▲
Indicator and
Seconds Count
Current Time
Screen
Reception Time
2 seconds
▲
A
▲
Receiving
indicator
Seconds
Hour :
Minutes
PM indicator
2 seconds
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 automatically picks up the time calibration signal five
times a day at 0:00 a.m., 1:00 a.m., 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 time calibration signal reception with the press of a
button. For more information, see “To perform manual receive”.
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Operation Guide 3353 3354 5053
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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.
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.
Inside a
Inside or
among
buildings
• Signal reception is normally 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.
vehicle
Near
household
appliances,
office
equipment,
or a mobile
phone
Near a
construction
site, airport, or
other sources
of electrical
noise
Near hightension
power lines
Among or
behind
mountains
Approximate Reception Ranges
1,500 kilometers
Mainflingen
Anthorn
U.K. signal transmitter
approximate reception
500 kilometers
• 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.
• See the information under “Signal Reception Troubleshooting” if you experience
problems with time calibration signal reception.
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., 1:00
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 are successful.
Note
• 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).
• When a reception starts, the second hand will move at high speed to the 12 o’clock
position where it will stop until the reception is complete.
• 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
seven minutes everyday when the time in the Timekeeping Mode reaches each of
the five calibration times. Do not perform any button operation within seven minutes
before or after any of the five calibration times. Doing so can interfere with correct
calibration.
• Remember that reception of the calibration signal depends on the time kept in the
digital display. The reception will be performed whenever the display shows one of
the five calibration times, regardless of whether or not the displayed time is actually
the correct time.
• When two, three, four, or five 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.
Receiving indicator
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Weak
(Level 1)
range as of April 2007
Strong
(Level 4)
• 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.
• The Level 4 receiving indicator appears on the Timekeeping Mode’s Receiving
Indicator and Seconds Count screen only. The Level 4 receiving indicator is not
displayed if signal reception was unsuccessful or after manual adjustment of the
current time setting.
• The Level 4 receiving indicator indicates that at least one of the five calibration
signal reception was successful. Note, however, that the Level 4 receiving indicator
is cleared from the display at 3:00 a.m. each day.
To perform manual receive
Receiving indicator
• Time calibration signal reception normally 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.
• After signal reception is complete, the display of the watch changes to the last signal
screen.
Note
• To interrupt a reception and return to the Timekeeping Mode, press D.
• If the reception is unsuccessful, the message
one or two minutes. After that, the watch returns to the Timekeeping Mode.
• You can also change from the last signal or
screen by pressing D.
To turn auto receive on and off
On/off status
• The second hand will advance at high speed to the correct position in accordance
with the digital time seconds count, and resume normal movement from there.
• For information about city codes that support signal reception, see “To set your
Home City”.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem
Cannot perform
manual receive.
Auto receive is
turned on, but
the Level 4
receiving
indicator does
not appear on
the Timekeeping
Mode display.
Time setting is
incorrect
following signal
reception.
• For further information, see “Important!” under “Time Calibration Signal Reception”
and “Radio-controlled Atomic Timekeeping Precautions”.
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 D for about two
seconds until the watch beeps.
3. Release D and RC flashes to indicate that signal
reception has started.
• When a reception starts, the second hand will move at
high speed to the 12 o’clock position where it will stop
until the reception is complete.
ERR appears on the display for about
ERR screen to the normal timekeeping
1. In the Timekeeping Mode, hold down A until the
transmitter indicator starts to flash, which indicates the
setting screen.
• The second hand will move at high speed to the 12
o’clock position, where it will stop.
2. Press C three times to move the flashing to the auto
receive on/off setting.
3. Press D to toggle auto receive on (
• If the current Home City setting is a city code that
does not support auto receive, “
of the on/off indicator. This means you cannot turn
auto receive on or off.
4. Press A twice to exit the setting screen.
Probable Cause
•
The watch is not in the Timekeeping Mode.
• Your current Home City is not one of
the following city codes: BER, PAR ,
ATH , or LON.
• You changed the time setting manually.
• The watch was not in the Timekeeping
or World Time Mode, or you were
performing some button operation
during auto receive.
• Even if reception is successful, the
Level 4 receiving indicator disappears
every day at 3 a.m.
• Time data (hour, minutes, seconds)
only was received during the last
reception. The Level 4 receiving
indicator appears only when time data
and date data (year, month, day) are
both received.
• 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.
• Enter the Timekeeping Mode
and try again.
• Select BER, PAR , ATH , or
LON as your Home City.
• Select the appropriate
transmitter setting for your
current location.
• Select the appropriate
transmitter setting for your
current location.
• Perform manual receive or
wait until the next auto
receive is performed.
• Check to make sure the
watch is in a location where it
can receive the signal.
• Change the DST setting to
Auto DST.
• Select the correct Home City
code.
) and off (OF).
ON
” appears in place
--
What you should do
World Time
City Code
Current time in the
selected city code
To view the time in another city
While in the World Time Mode, press D to scroll through the city codes (time zones).
• For full information on city codes, see the “City Code Table”.
The World Time Mode digitally displays the current time in
30 cities (29 time zones) around the world.
• Pressing A in the World Time Mode causes the
applicable city code to appear on the digital display for
about two seconds.
• If the current time shown for a city is wrong, check your
Home City time settings and make the necessary
changes.
• 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.
• All of the operations in this section are performed in the
World Time Mode, which you enter by pressing C.
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