Casio MO0406-EA User Manual

MO0406-EA

Resin Band

Metal Band

Operation Guide 3364 3365

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.

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

WED

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

GMT

▲

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 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 of the range of the transmitters in Rugby and

• 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

• Selecting

• 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.

Mainflingen, you have to adjust 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.

DST indicator

l

l

l

l

l

l

l

l

l

l

l

l

City code

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.

LON, PAR

auto receive. When auto receive is turned on and you are within the reception range,
the watch will automatically receive the time calibration signal from the applicable
transmitter (in the middle of the night) and update its settings accordingly.

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.

AvtA, 77, 60, 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 from Rugby, England and the signal
from Mainflingen, Germany.

• See the map under “Reception Ranges” for information
about the reception ranges of the watch.

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.

l

l

l

• The following are the city codes of the major cities in
the Western Europe time zones where signal
reception is possible.

: London

LON

and

BER

Amsterdam, Hamburg, Frankfurt,
Vienna, Barcelona, Madrid

3. Press A to exit the setting screen.

, or

as your Home City code automatically turns on

BER

: Paris, Berlin, Milan, Rome,

PAR

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.

• Proper signal reception can be difficult or even impossible under the conditions listed

below.

Inside or
among
buildings

▲

A

Hour : Minutes

and

manual receive

Inside a
vehicle

2 seconds

Day of week

.

Near
household
appliances,
office
equipment,
or a mobile
phone

Press D.

▲

Month. Day

Near a
construction
site, airport, or
other sources
of electrical
noise

Last Signal Screens

▲

Near high­tension
power lines

is

---

2 seconds

Receive date

Receive time

Among or
behind
mountains

1

Operation Guide 3364 3365

GMT

qmOo

qmOw

• 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.

• When within range of the applicable transmitter, this watch can receive either the
Germany (Mainflingen) or England (Rugby) time calibration signals. See
“Transmitters” for more information.

Reception Ranges

1,500 kilometers

Rugby

500 kilometers

• Under good reception conditions, signal reception is possible within a radius of
about 1,500 kilometers from a transmitter.

• At distances further than about 500 kilometers from a 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.

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
City code. For information about turning off auto receive, see “To select the
transmitter mode”.

• 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
seven minutes everyday when the time in the Timekeeping Mode reaches each of
the calibration times. Do not perform any button operation within seven 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.

LON, PAR

Weak

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 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.

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 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.

appears on the display for about one

ERR

Mainflingen

, or

is selected as the Home

BER

Strong

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 Timekeeping Precautions”.

Probable Cause

• The watch is not in the
Timekeeping Mode.

• Your current Home City is not one
of the following city codes: LON,

PAR, or BER.

• A button operation was performed
or the watch was moved while
signal reception was in progress.

• The transmitter setting is incorrect.

• The watch was not in the

Timekeeping Mode or World Time
Mode when a calibration time
arrived.

• The transmitter setting is incorrect.

• 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.

What you should do

• Enter the Timekeeping Mode and
try again.

LON, PAR, or BER as

• Select
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.

• Select the transmitter setting
appropriate for your current
location.

• Perform manual signal receive or
wait until the next auto signal
receive operation is performed.

• Select the transmitter setting
appropriate for your current
location.

• Change the DST setting to Auto
DST.

• Select the correct Home City code.

World Time

City code

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
Table”.

• 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

Alarm

On/Off status

2 seconds

Alarm Screen

▲

Press D.

▲

Hourly Time Signal Screen

When the alarm is turned on, the alarm sounds when the
alarm time is reached. You can also turn on an Hourly
Time Signal, which will cause the watch to beep twice
every hour on the hour.

• When the alarm is turned on, the alarm screen
alternates between
alarm time (hour and minutes). When the alarm is off,

(alarm off) remains on the alarm screen.

• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing C.

• Pressing D in the Alarm Mode toggles between the
alarm screen and Hourly Time Signal screen.

(alarm on) and the current

2