Casio 3108 Operation Manual

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
Bright Light
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.
Bright Light
Solar cell
(Converts light to
electrical power.)
LEVEL 1
LEVEL 2
LEVEL 3
Charge
LEVEL 4
Rechargeable battery
• 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.

General Guide

• Press C to change from mode to mode.
• In any mode, press L to illuminate the display for about one second.
Radio-controlled Atomic Timekeeping
Long-wave
time
calibration
signal
Transmitter
Watch
Operation Guide 3108
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.
Battery discharges in the dark.
Electrical
energy
All
LEVEL 1
functions
LEVEL 2
enabled
LEVEL 3
Dis-
charge
LEVEL 4
Timekeeping Mode
Press C.
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.
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.
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.
About This Manual
Some or all
functions
disabled
World Time Mode
• 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.
• 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.
Stopwatch Mode
Alarm Mode Countdown Timer Mode
1