Dual time, Backlight, Reference – Casio 2524 User Manual

Page 3: User’s guide 2524

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USER’S GUIDE 2524

3

3. While a setting is flashing, use B to increase it.

• To set the starting value of the countdown time to 24 hours, set

0:00.

4. Press A to exit the setting screen.

To use the countdown timer
Press D while in the Countdown Timer Mode to start the countdown timer.
• When the end of the countdown is reached, the alarm sounds for 10 seconds

or until you stop it by pressing any button. The countdown time is
automatically reset to its starting value after the alarm stops.

• Press D while a countdown operation is in progress to pause it. Press D

again to resume the countdown.

• To completely stop a countdown operation, first pause it (by pressing D),

and then press A. This returns the countdown time to its starting value.

• The countdown timer measurement operation continues even if you exit the

Countdown Timer Mode.

Backlight

The backlight uses an LED (light-emitting diode) and a
light guide panel that causes the entire display to glow for
easy reading in the dark. The watch’s auto light switch
automatically turns on the backlight when you angle the
watch towards your face.

• The auto light switch must be turned on (indicated by

the auto light switch on indicator) for it to operate.

• See “Backlight Precautions” for other important

information about using the backlight.

To turn on the backlight manually

In any mode, press L to illuminate the display for about one second.

• The above operation turns on the backlight regardless of the current auto light

switch setting.

Auto light swich on
indicator

About the Auto Light Switch

Turning on the auto light switch causes the backlight to turn on for about one second,
whenever you position your wrist as described below in any mode.

Moving the watch to a position that is parallel to the ground and then tilting it
towards you more than 40 degrees causes the backlight to turn on.

More than
40

°

Parallel to
ground

Warning!

Always make sure you are in a safe place whenever you are reading the

display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
surprise or distract others around you.

When you are wearing the watch, make sure that its auto light switch is turned

off before riding on a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create a
distraction, which can result in a traffic accident and serious personal injury.

To turn the auto light switch on and off

In the Timekeeping Mode, hold down L for about two seconds to toggle the auto light
switch on (

displayed) or off (

not displayed).

• In order to protect against runnning down the battery, the auto light switch is

automatically turned off approximately six hours after you turn it on. Repeat the
above procedure to turn the auto light switch back on if you want.

• The auto light switch on indicator (

) is on the display in all modes while the auto

light switch 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.

Auto Display

Auto Display continually changes the contents of the
digital display.

To turn off Auto Display

Press any button (except for L and B) to turn off Auto
Display. This returns to the Timekeeping Mode.

To turn on Auto Display

Hold down C for about two seconds until the watch
beeps.
• Note that Auto Display cannot be performed while a

setting screen is on the display.

Auto Return Features

• After you perform any button operation (except for the backlight button) in any mode,

pressing C returns directly to the Timekeeping Mode.

• If you leave the watch in the Data Bank Mode for two or three minutes without

performing any operation, it automatically changes to the Timekeeping Mode.

• If you leave a screen with flashing digits or a cursor on the display for two or three

minutes without performing any operation, the watch automatically saves any
settings you have made up to that point and exits the setting screen.

Scrolling

The B, C, and D buttons are used in various modes and setting screens to scroll
through data on the display. In most cases, holding down these buttons during a scroll
operation scrolls through the data at high speed.

Initial Screens

When you enter the Data Bank or Alarm Mode, the data you were viewing when you
last exited the mode appears first.

Timekeeping

• Resetting the seconds to

00 while the current count is in the range of 30 to 59

causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to

00 without changing the minutes.

• The year can be set in the range of 2000 to 2039.
• The watch’s built-in full automatic calendar makes allowances for different month

lengths and leap years. Once you set the date, there should be no reason to change
it except after you have the watch’s battery replaced.

Backlight Precautions

• The illumination provided by the backlight may be hard to see when viewed under

direct sunlight.

• The backlight automatically turns off whenever an alarm sounds.
• Frequent use of the backlight shortens the battery life.

Auto light switch precautions

• Wearing the watch on the inside of your wrist and movement or vibration of your arm

can cause the auto light switch to activate and illuminate the display. To avoid
running down the battery, turn off the auto light switch whenever engaging in
activities that might cause frequent illumination of the display.

• The backlight may not light if the face of the watch is

more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the ground.

• The backlight turns off in about one second, even if you

keep the watch pointed towards your face.

• Static electricity or magnetic force can interfere with proper operation of the auto

light switch. If the backlight does not light, try moving the watch back to the starting
position (parallel with the ground) and then tilt it back toward you again. If this does
not work, drop your arm all the way down so it hangs at your side, and then bring it
back up again.

• Under certain conditions, the backlight may not light until about one second after you

turn the face of the watch towards you. This does not necessarily indicate
malfunction of the backlight.

More than 15 degree
too high

Day of the Week List

Sunday Monday Tuesday Wednesday Thursday Friday Saturday

ENx

SUN

oON

TUE

WED

THU

FRI

SAT

POR

DOo

SEx

TER

QUA

QUI

SEX

SaB

ESP

DOo

LUN

oAR

oIb

JUE

VIE

SaB

FRA

DIo

LUN

oAR

oER

JEU

VEN

SAo

NED

ZON

oAA

DIN

WOE

DON

VRI

ZAT

DAN

SvN

oAN

TIR

ONS

TOR

FRE

LvR

DEU

SON

oON

DIE

oIT

DON

FRE

SAo

ITA

DOo

LUN

oAR

oER

xIO

VEN

SAB

SVE

SiN

owN

TIS

ONS

TOR

FRE

LiR

POL

NIE

PON

WTO

qRO

CZW

PIl

SOB

ROo

DUo

LUN

oAR

oIE

JOI

VIN

Sjo

TgR

PAZ

PZT

SAL

mAR

PER

CUo

CTS

RUS

CS

QO

BT

SR

YT

QT

SB

Dual Time

The Dual Time Mode lets you keep track of time in a
different time zone. You can select Standard Time or
Daylight Saving Time for the Dual Time Mode time, and a
simple operation lets you view the Data Bank Mode
screen.
• The seconds count of the Dual Time is synchronized

with the seconds count of the Timekeeping Mode.

• All of the operations in this section are performed in the

Dual Time Mode, which you enter by pressing C.

To set the Dual Time

1. In the Dual Time Mode, hold down A until the hour setting start to flash, which

indicates the setting screen.

2. Press C or D to move the flashing between the hour and minute settings.
3. While a setting is flashing, use B to increase it.
4. Press A to exit the setting screen.

Dual time
(Hour : Minutes Seconds)

Timekeeping Mode time

To toggle Dual Time Mode time between DST and Standard Time

Holding down D for about two seconds in the Dual Time Mode toggles between
Daylight Saving Time (DST display) and Standard Time (DST not displayed).
• The DST indicator on the display indicates that daylight saving time is turned on.

To display the Data Bank screen in the Dual Time Mode

Holding down B displays the record you were viewing when you last used the Data
Bank Mode.

Data Bank Screen

Hold down B.

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