Casio 5038 User's Manual

Casio Watches User's Manual - 5038.
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Operation Guide 5038

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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. Even if the face of the watch is
blocked only partially from light, charging will be reduced
significantly.

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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.

Bright light

Electrical 
energy

All 
functions
enabled.

LEVEL 1

LEVEL 2

Charge

Solar cell
(Converts light to 
electrical power.)

Rechargeable battery

LEVEL 1

LEVEL 2

Some 
functions 
disabled.

Dis-

charge

Battery charges in the light.

Battery discharges in the dark.

• The actual level at which some functions are disabled depends on the watch model.

• Be sure to read “Power Supply” for important information you need to know

when exposing the watch to bright light.

If the analog hands aren’t moving...
If the analog hands aren’t moving, it means that the power saving mode has stopped
them to save battery power.

• See “Power Saving” for more information.

• The hands also stop when the watch’s battery runs down.

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

• 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.

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Hour hand

Minute hand

Date

Second hand
(Timekeeping/
Stopwatch)

24-Hour hand

Stopwatch
minute hand

Stopwatch 1/20 second hand

Home Position

Adjustment Mode

Alarm Mode

Dual Time  Mode

General Guide
• Press C to change from mode to mode.

• About 1.5 seconds after you enter the Dual Time Mode, Alarm Mode, or Home

Position Adjustment Mode the hands will move the position that indicates the current
setting of the mode. You cannot change to another mode while the hands are
moving. To change to another mode, either press C before the hands start to move,
or wait until the hands stop before pressing C.

• In the Timekeeping Mode (except when a setting screen is on the display), press B

to illuminate the face of the watch.

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Timekeeping Mode

Press C.

Stopwatch 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 (UTC+8) is selected as its Home Time Zone, and
the watch is within range of the transmitter. The initial
factory Home Time Zone setting of the watch is Beijing
(UTC+8), so you will not need to change the setting if
you are in the same time zone (UTC+8) as Beijing.

• As of January 2008, 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.

Transmitter

Long-wave
time 
calibration 
signal

Watch

• 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.

Current Time Setting
This watch adjusts its time setting automatically in accordance with a time calibration
signal. You also can perform a manual procedure to set the time and date, when
necessary.

• Whenever you need to travel outside of the time zone where Beijing is located

(UTC+8), use the procedure under “To select your Home Time Zone” to change the
watch’s Home Time Zone setting as required.

• When using the watch outside the range of the time calibration signal transmitter,

you have to adjust the current time setting manually as required. See “Timekeeping”
for more information about manual time settings.

• Even if the time calibration signal is received correctly, there are some times when

the analog hands may not indicate the correct time. If this happens, use the
procedures under “Adjusting the Home Positions” to check the home positions of the
hands, and make adjustments as required.

To select your Home Time Zone

1. In the Timekeeping Mode, hold down A until the UTC

offset value starts to flash. This is the setting mode.

• At this time the second hand will move at high speed

to the 12 o’clock position and stop there.

• The UTC offset value shows the difference in hours

between the currently selected time zone and
Coordinated Universal Time.

• The DST indicator shows whether Daylight Saving

Time (summer time) currently is being applied in the
currently selected time zone.

2. Use B (+) to scroll through available time zones.

• For information about time zones, see the “Time Zone

Table”.

• If you want the watch to receive the Chinese time

calibration signal, select 8.0 (UTC+8, Beijing) as your
Home Time Zone.

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UTC offset value

3. Press A to exit the setting mode.

• The second hand will return at high speed to the applicable current time position and

resume normal timekeeping.

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 receives the time calibration signal automatically up to
five times a day. When any auto receive is successful, the remaining auto receive
operations are not performed. For more information, see “About Auto Receive”.

• Manual Receive
Manual receive lets you start a time calibration receive operation 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.
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.

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