Casio Casio MA0409-EA User's Manual

Casio Watches User's Manual - Casio MA0409-EA.
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Operation Guide 2877

MA0409-EA

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.

Timekeeping Mode

Stopwatch Mode

Recall Mode

Countdown Timer Mode

World Time Mode

Alarm Mode

Press      .

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

City code  

Day of week 

PM indicator  

Seconds 

Hour : Minutes 

Year  Month – Day 

Timekeeping

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

Read This Before You Set the Time and Date !
This watch is preset with a number of city codes, each of
which represents the time zone where that city is located.
When setting the time, it is important that you select the
correct city code for your Home City (the city where you
normally use the watch). If your location is not included in
the preset city codes, select the preset city code that is in
the same time zone as your location.

• Note that all of the times for the World Time Mode city

codes are displayed in accordance with the time and
date settings you configure in the Timekeeping Mode.

• After you correctly set your Home City time and date, you can set the watch up for

timekeeping with a different city code simply by changing the Home City code in the
Timekeeping Mode.

To set the time and date

1. In the Timekeeping Mode, hold down B until the

seconds start to flash, which indicates the setting
screen.

2. Press D twice to move the flashing to the Home City

code setting (see the illustration below), and then use
C and A to select the code you want.

• Make sure you select your Home City code before

changing any other setting.

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

Table”.

3. Press D to move the flashing in the sequence shown

below to select the other settings.

Seconds

DST

City Code

Hour

Minutes

Year

Month

Day

12/24-Hour format

4. When the setting you want to change is flashing, use C and A to change it as

described below.

Screen

10:58 50
 

P OFF

P TYO

10:58 50

P 12H

 

04  6-30

To do this:

Reset the seconds to 00

Toggle between Daylight Saving Time (ON)
and Standard Time (OFF)

Change the city code

Change the hour or minutes

Toggle between 12-hour (12H) and
24-hour (24H) timekeeping

Change the year, month, or day

Do this:

Press C.

Press C.

Use C (east) and A (west).

Use C (+) and A (–).

Press C.

Use C (+) and A (–).

5. Press B to exit the setting screen.

• See “Daylight Saving Time (DST)” below for details about the DST setting.

• The year can be set in the range of 2000 to 2039. The day of the week is calculated

automatically in accordance with the date.

• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is

applied in all modes.

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

• Note that you cannot switch between Standard Time and Daylight Saving Time while

GMT

 (Greenwich Mean Time) is selected as your Home City code.

To toggle the Timekeeping Mode time between DST and Standard Time

1. In the Timekeeping Mode, hold down B until the

seconds start to flash, which indicates the setting
screen.

2. Press D once to display the DST setting screen.
3. Press C to toggle between Daylight Saving Time (ON

displayed) and Standard Time (OFF displayed).

4. Press B to exit the setting screen.

• The DST indicator appears on the display to indicate

that Daylight Saving Time is turned on.

Stopwatch

The 1/100-second stopwatch measures elapsed time, as well as lap/split times. You
can also store run data in memory.

• All of the operations in this section are performed in the Stopwatch Mode, which you

enter by pressing D.

Lap/Split number  

Lap time (hours, 
minutes, seconds, 
1/100 second) 

Split time 

Lap/Split 
indicator 

Timing in Progress

Run number 

All Zero Clear

Important!

• A “run” is the total elapsed time and all the lap/split times you recorded from the

point you start the stopwatch until you stop it. The watch stores each run as a
separate memory record.

• The run number that appears on the display whenever you clear the stopwatch to all

zeros indicates the number of the next run record that will be created when you
perform a stopwatch operation. The watch automatically increases the run number
by one each time you store run data.

• “Lap time” is the time spent to cover a specific segment of a race, such as one lap

around a track. “Split time” is the time spent from the beginning of a race up to a
certain point.

• Pressing B in the Stopwatch Mode switches the positions of the lap time and split

time between the middle display area and the lower display area. Arrows appear
next to the LAP and SPLIT indicators to show which time is in the middle (up arrow)
and which time is in the lower (down arrow) display area.

• The hour of the time currently in the middle display area is indicated to the left of the

lap/split number in the upper display area.

• The display range for the middle display area is 9 hours, 59 minutes, 59.99 seconds.

For the lower display area, it is 99 hours, 59 minutes, 59.99 seconds.

• The stopwatch continues to run, restarting from zero after it reaches its limit, until

you stop it.

• The stopwatch measurement operation continues even if you exit the Stopwatch

Mode.

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