Casio 3421 manual

MA1301-EA© 2013 CASIO COMPUTER CO., LTD.

Operation Guide 3229/3421

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.

E-1

Contents

General Guide .........................................................................................................	E-4
Timekeeping ............................................................................................................	E-6
Alarm ......................................................................................................................	E-10
Countdown Timer .................................................................................................	E-14
Stopwatch ..............................................................................................................	E-17
Specifications .......................................................................................................	E-19

Procedure Lookup

The following is a handy reference list of all the operational procedures contained in this manual.

To set the time and date .........................................................................................	E-6
To switch the backlight function on and off .........................................................	E-9
To set the alarm time ............................................................................................	E-11
To stop the alarm ..................................................................................................	E-13
To switch an alarm and Hourly Time Signal on and off ....................................	E-13
To set the countdown time ..................................................................................	E-14
To use the countdown timer ................................................................................	E-15
To switch auto repeat timing on and off .............................................................	E-16
To measure elapsed time .....................................................................................	E-17
To record split times .............................................................................................	E-18
To time first and second place finishes ..............................................................	E-18

E-2 E-3

General Guide

•Press C to change from mode to mode.

•After you perform an operation in any mode, pressing Creturns to the Timekeeping Mode.

•Press D in any mode to illuminate the display. Illumination turns off about two seconds after you release D.

Timekeeping Mode Alarm Mode Countdown Timer Mode Stopwatch Mode

Press C.

E-4 E-5

Timekeeping

3. While the seconds digits are selected (flashing), press B to reset the seconds to

“00”. If you press Bwhile the seconds count is in the range of 30 to 59, the seconds

Day of week Month

Day

Hour Seconds Minutes

PM indicator

To set the time and date

1.Press A while in the Timekeeping Mode. The seconds digits flash on the display because they are selected.

2.Press C to change the selection in the following sequence.

Seconds Hour Minutes

Day Month Year

are reset to “00” and 1 is added to the minutes. If the seconds count is in the range

of 00 to 29, the minutes count is unchanged.

4. While any other digits (besides seconds) are selected (flashing), press Bto increase

the number. Holding down B changes the number at high speed.

• To switch between the 12-hour and 24-hour formats, press D while some

digits are flashing.

5. After you set the time and date, press A to return to the Timekeeping Mode.

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

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

•If you do not operate any button for a few minutes while a selection is flashing, the flashing stops and the watch goes back to the Timekeeping Mode automatically.

E-6

E-7

About the backlight

When you switch the backlight function on, the backlight of the watch flashes whenever alarm (page E-10), countdown timer or hourly time signal is sounding.

•Pressing D at any time illuminates the display, regardless of the backlight’s on/off setting.

•The backlight of this watch employs an electro-luminescent (EL) light, which loses its illuminating power after very long term use.

•Frequent use of the backlight shortens the battery life.

•The watch will emit an audible sound whenever the display is illuminated. This is caused by a transistor that vibrates when the EL panel lights up. It does not indicate malfunction of the watch.

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

•The backlight automatically stops illuminating whenever an alarm sounds.

To switch the backlight function on and off

In the Timekeeping Mode, hold down Bfor about two seconds to switch the backlight function on and off. When you switch the backlight function on, an indicator appears on the display as shown.

Backlight function on indicator

•The backlight function on indicator remains on the display in all modes until you switch the backlight function off.

•The above operation controls operation of the backlight function only. It does not affect operation of audible tones and signals.

E-8 E-9