Casio Stopwatch MA1009-EA User's Manual

Casio Watches User's Manual - Stopwatch MA1009-EA.
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Operation Guide 3249

Timekeeping

Use the Timekeeping Mode to set and view the current
time and date.

• Pressing A in the Timekeeping Mode will display the

currently selected Home City.

• Press D to toggle between 12-hour and 24-hour

formats.

• With 12-hour format, times between midnight and noon

are indicated by AM, while times between noon and
midnight are indicated by PM.

• The AM and PM indicators do not appear when you are

using 24-hour format.

To set the time and date
1. While in the Timekeeping Mode, hold down A until the second’s digits flash on the

display, which indicates the setting screen.

2. Press C to move the flashing in the sequence shown below.

DST

Seconds

Month

Day

City code

Minutes

Year

Hour

3. While the seconds setting is selected (flashing), press D to reset it to 00. If you

press D while the seconds setting is in the range of 30 to 59, the seconds are
reset to 00 and 1 is added to the minutes. If the seconds setting is in the range of
00 to 29, the minutes count is unchanged.

• While the DST* setting is selected (DST on indicator is flashing), press D to

toggle it on (On) and off (OF).

• The DST on/off setting you select for the Timekeeping Mode affects the World

Time Mode.

• While the city code setting is selected, use D and B to scroll through the

available codes until the one you want to use as your home time city is displayed.

• For full information on city codes, see the “City Code Table”.

4. While any other setting is selected (flashing), press D to increase it or press B to

decrease it. Holding down D or B scrolls at high speed.

5. Press A to exit the setting screen.

• The day of the week is set in accordance with the date automatically.

• The date can be set within the range of January 1, 2000 to December 31, 2099.

• The watch’s built-in full automatic calendar makes allowances for different month

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

* See “Daylight Saving Time (DST) Setting” for details about the DST setting.

Illumination Precautions
Your watch uses two LEDs to illuminate the display for easy reading in the dark. In
any mode (except when the setting screen is on the display), press B to turn on
illumination for about two seconds.

• Illumination may be hard to see when viewed under direct sunlight.

• Illumination turns off automatically whenever an alarm sounds.

• Frequent use of illumination shortens the battery life.

MA1009-EA

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.

Timekeeping Mode

World Time Mode

Countdown

Timer Mode

Alarm Mode

Stopwatch Mode

Press     . 

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

• In any mode (except when a setting screen is on the display), press B to illuminate

the display for about two seconds.

• If you do not perform any operation for a few minutes while a setting screen (with

flashing digits) is on the display, the watch exits the setting screen automatically.

• If you do not perform any operation for a few minutes in the Alarm Mode, the watch

reverts to the normal timekeeping screen automatically.

Day of week 

Hour : Minutes Seconds 

Month – Day 

PM indicator 

Current time in the zone 
of the selected city code  

City code 

Mode indicator 

World Time

World Time shows the current time in 30 cities (29 time
zones) around the world.

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

World Time Mode, which you enter by pressing C.

To view the time in another city code
In the World Time Mode, press D to scroll through city
codes (time zones).

• For full information about city codes, see the “City Code

Table”.

• If the current time shown for a city is wrong, check your

Timekeeping Mode time and Home City code settings
and make the necessary changes.

Daylight Saving Time (DST) Setting
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.

To toggle a city code time between Standard Time and Daylight Saving Time

1. In the World Time Mode, use D to display the city code

(time zone) whose Standard Time/Daylight Saving Time
setting you want to change.

2. Hold down A for about one second to toggle between

Daylight Saving Time (DST indicator displayed) and
Standard Time (DST indicator not displayed).

Alarm time 
(Hour : Minutes) 

Alarm number 

Mode indicator 

DST indicator 

• The DST indicator will appear on the display whenever you display a city code for

which Daylight Saving Time is turned on.

• Note that the DST/Standard Time setting affects only the currently displayed city

code. Other city codes are not affected.

Alarms

You can set five independent Daily Alarms. When an
alarm is turned on, the alarm tone sounds when the alarm
time is reached.
You can turn on an Hourly Time Signal that causes the
watch to beep twice every hour on the hour.

• There are six screens in the Alarm Mode. Five are for

daily alarms (indicated by numbers from x1 through
x5), and one is for the Hourly Time Signal (indicated by
SIG).

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

Alarm Mode, which you enter by pressing C.

To set an alarm time
1. In the Alarm Mode, use D to scroll through the alarm screens until the one whose

time you want to set is displayed.

Alarm 2

Alarm 1

:00 (Hourly Time Signal) 

Alarm 3

Alarm 5

Alarm 4

• To set a one-time alarm, display one of the screens indicated by an alarm number

from x1 through x5.

2. After you select an alarm, hold down A until the hour setting of the alarm time

starts to flash, which indicates the setting screen.

• This operation turns on the alarm automatically.

3. Press C to move the flashing between the hour and minute settings.

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