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Operation Guide 3108

1

MO0711-EA

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

The electricity generated by the solar cell of the
watch is stored by a built-in battery. Leaving or
using the watch 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.

ll

l

l

l

l

l

l

l

l

l

Bright Light

Solar cell

All 
functions
enabled

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Charge

Rechargeable battery

Bright Light

Electrical 
energy

Solar cell
(Converts light to 
electrical power.)

Some or all
functions
disabled

LEVEL 1

LEVEL 2

LEVEL 3

LEVEL 4

Dis-

charge

Battery charges in the light.

Battery discharges in the dark.

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.

Note that CASIO COMPUTER CO., LTD. assumes no responsibility for
any damage or loss suffered by you or any third party arising through the
use of this product or its malfunction.

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.

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.

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.

Stopwatch Mode

Countdown Timer  Mode

Alarm Mode

General Guide

Press 

C

 to change from mode to mode.

In any mode, press 

L

 to illuminate the display for about one second.

Timekeeping Mode

Press 

C

.

World Time  Mode

Radio-controlled Atomic Timekeeping

Your watch receives a time calibration signal and
updates its time setting accordingly.

This watch is designed to receive the time
calibration signal transmitted from Shangqiu
City, Henan Province, China (Call Sign: BPC,
Frequency: 68.5 kHz).

Your watch will be able to receive the signal
whenever Beijing (BJS) or Hong Kong (HKG) is
selected as its Home City, and the watch is
within range of the transmitter. The initial
factory Home City setting of the watch is
Beijing (BJS), so you will not need to change
the setting if you are in the same time zone
(GMT+8) as Beijing.

Transmitter

Long-wave
time 
calibration 
signal

Watch

As of July 2007, China does not use Daylight Saving Time (DST). If China
does go to the Daylight Saving Time system in the future, some functions of
this watch may no longer operate correctly.

See the information under “Signal Reception Troubleshooting” if you
experience problems with time calibration signal reception.

Chinese Time Calibration Signal

The Chinese time calibration signal (BPC) is maintained by the National Time
Service Center (http://www.ntsc.ac.cn/) of the Chinese Academy of Sciences,
and is transmitted from a transmitter (68.5 kHz) located in Shangqiu. The time
data of the Chinese time calibration signal is maintained by the National Time
Service Center.

Note that transmission of the calibration signal may be interrupted
occasionally due to maintenance, lightning, etc.

Summary of Contents for 3108

Page 1: ...h 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 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 chargin...

Page 2: ...ehold appliances office equipment or a mobile phone Near a construction site airport or other sources of electrical noise Near high tension power lines Among or behind mountains 500 km Changchun Shanghai Hong Kong Shangqiu Chengdu Beijing 1 500 km Approximate Reception Range At distances further than about 500 kilometers from the Shangqiu China transmitter signal reception may not be possible duri...

Page 3: ...th signal reception For further information see Important under Time Calibration Signal Reception and Radio controlled Atomic Timekeeping Precautions World Time 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 sectio...

Page 4: ...out 10 seconds In the case of the snooze alarm the alarm operation is performed a total of seven times every five minutes or until you turn the alarm off or change it to a one time alarm Note Pressing any button stops the alarm tone operation Performing any one of the following operations during a 5 minute interval between snooze alarms cancels the current snooze alarm operation Displaying the Tim...

Page 5: ...r indicator shows you the current power level of the rechargeable battery flashes on the display in the Timekeeping Mode when battery is at Level 3 at Level 3 and the flashing charge indicator CHG at Level 4 tell you that battery power is very low and that exposure to bright light for charging is required as soon as possible At Level 5 all functions are disabled and settings return to their initia...

Page 6: ...splayed 4 When the setting you want is selected press A to exit the setting screen The DST indicator appears to indicate that Daylight Saving Time is turned on Reference This section contains more detailed and technical information about watch operation It also contains important precautions and notes about the various features and functions of this watch Button Operation Tone The button operation...

Page 7: ... P appears on the display for times in the range of noon to 11 59 p m and no indicator appears for times in the range of midnight to 11 59 a m With the 24 hour format times are displayed in the range of 0 00 to 23 59 without any indicator Illumination Precautions The electro luminescent panel that provides illumination loses power after very long use Illumination may be hard to see when viewed und...

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