Casio WV-300DE-7A - User Manual

Operation Guide 3034
1
MO0602-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.
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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
LEVEL 3
LEVEL 4
Charge
Solar cell
(Converts light to
electrical power.)
Rechargeable battery
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
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.
• 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
• 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.
(Light)
(Light)
▲
▲
Alarm Mode
Countdown Timer ModeStopwatch Mode
General Guide
• Press B to change from mode to mode.
• In any mode (except when a setting screen is on the display), press L to illuminate
the display.
Timekeeping Mode
Press B.
▲
World Time Mode
▲
▲
Radio-controlled Timekeeping
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.
Current Time Setting
This watch adjusts its time setting automatically in
accordance with a time calibration signal. You can also
perform a manual procedure to set the time and date,
when necessary.
Month – Day
Hour : Minutes
DST indicator
Seconds
PM indicator
• The first thing you should do after purchasing this watch is to set your Home City,
which is the city where you will use the watch normally. 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
Rugby and Mainflingen, you need to adjust the time manually as required. See
“Timekeeping” for information about manual settings.
To set your Home City
1. In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Use C(east) and L(west) to select the city code you
want to use as your Home City.
• The following are the city codes for major cities in the
Western Europe time zones.
LIS
: Lisbon
LON: London
BCN: Barcelona
MAD: Madrid
PAR: Paris
MIL: Milano
ROM: Rome
BER: Berlin
STO: Stockholm
ATH: Athens
3. Press A to exit the setting screen.
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City code
Important!
• 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
operation (in the middle of the night). You also can 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.
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
six 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.
Make sure there are no metal objects nearby.
Resin Band
Metal Band
• 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.
• Signal reception is normally better at night than during the day.
Inside or
among
buildings
Inside a
vehicle
Near
household
appliances or
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
• Time calibration signal reception takes from two to five minutes, but in some cases it
can take as long as 12 minutes. Take care that you do not perform any button
operations or move the watch during this time.

Summary

Getting Acquainted

Keep the Watch Exposed to Bright Light

Instructions on how to charge the watch effectively using ambient light sources.

Mode Navigation and Basic Functions

Explains fundamental button operations and introduces the watch's primary modes.

Radio-controlled Timekeeping

Current Time Setting

Guide to setting the watch's time and date manually or via automatic signal reception.

Setting Your Home City

Procedure to select the primary city for accurate timekeeping and signal reception.

Time Calibration Signal Reception

Details on automatic and manual methods for receiving time calibration signals.

Receiving Indicator and Manual Reception

Interpreting signal strength and steps to perform a manual signal receive operation.

Radio Signal Reception Details

Reception Ranges and Auto Receive

Information on geographical signal range and managing automatic time signal reception.

Last Signal Reception Display

How to view the date and time of the last successful time calibration signal reception.

Signal Receive Troubleshooting

Common Reception Problems and Solutions

Addresses issues like no signal or incorrect time after reception, providing solutions.

Auto Receive Start Times

Daily Auto Receive Schedule by Home City

Details the scheduled times for automatic signal reception based on selected Home City.

World Time Mode Operations

Viewing and Adjusting City Times

How to browse times in different cities and adjust Daylight Saving Time settings.

Alarms and Hourly Time Signal

Setting and Testing Alarms

Instructions for configuring alarm times, including snooze, and testing their functionality.

Managing Alarm and Hourly Signal Activation

How to turn individual alarms and the hourly time signal on or off.

Stopwatch Operations

Measuring Elapsed and Split Times

Guide to using the stopwatch for measuring elapsed time, split times, and two finishes.

Illumination and Power Supply

Activating the Display Light

How to activate the electro-luminescent (EL) backlight for improved visibility.

Understanding Battery Indicators

Explanation of the battery power indicator and the recover indicator for charging status.

Countdown Timer Operations

Setting and Using the Countdown Timer

Procedure for setting the countdown duration and operating the timer functionality.

Time and Date Setting

Procedure for Manual Adjustment

Step-by-step guide to manually adjust the watch's time, date, and other settings.

Daylight Saving Time (DST) Management

Changing DST Settings

How to switch between Standard Time, Daylight Saving Time, and Auto DST modes.

Display Customization and Reference

Hiding Date;Day of Week Display

Option to customize the main timekeeping screen by hiding the date and day.

Button Tone and Power Saving Features

Managing button operation tones and configuring the watch's power saving function.

Auto Return Features

Automatic return to Timekeeping Mode or exiting of setting screens after inactivity.

Radio-controlled Timekeeping Precautions

Important Notes on Signal Reception

Factors affecting signal reception and important precautions for accurate time calibration.

Timekeeping Details

Seconds Reset and Calendar Functions

Explanation of seconds reset behavior and the watch's automatic calendar functionality.

City Code Table

City Codes and UTC Differentials

Reference list of city codes, their UTC differentials, and corresponding major cities.

Casio WV-300DE-7A Specifications

General

Brand	Casio
Model	WV-300DE-7A
Category	Watch
Type	Digital
Movement	Quartz
Display	Digital
Case Material	Resin
Band Material	Resin
Features	World Time, Alarm, Stopwatch, Countdown Timer
Battery Life	Approximately 2 years