G-Shock GA-120 User Manual

MO1106-EA

Operation Guide 5229

• 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.

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Procedure Lookup

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

To set the digital time and date ............................................................................. E-9

To change the Daylight Saving Time (summer time) setting ............................ E-12

To specify a distance value.................................................................................. E-16

To specify lap time or split time readings .......................................................... E-18

To perform elapsed time measurement .............................................................. E-19

To set up the stopwatch to take lap time readings ............................................E-20

To perform a lap time measurement ................................................................... E-21

To set up the stopwatch to take split time readings.......................................... E-22

To perform a split time measurement ................................................................. E-23

To measure times with the stopwatch ................................................................ E-24

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About This Manual

• Depending on the model of your watch, digital 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.

• Note that the product illustrations in this manual are intended for reference only, and so the actual product may appear somewhat different than depicted by an illustration.

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Contents

General Guide ......................................................................................................... E-6

Timekeeping ............................................................................................................ E-8

Stopwatch ..............................................................................................................E-14

Countdown Timer .................................................................................................. E-25

World Time ............................................................................................................. E-29

Alarms ....................................................................................................................E-33

Illumination ............................................................................................................E-38

Hand Home Position Correction ..........................................................................E-42

Reference .............................................................................................................. E-44

Specifications ....................................................................................................... E-48

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To use the countdown timer ................................................................................ E-26

To configure countdown start time and auto-repeat settings .......................... E-27

To view the current time in another time zone ...................................................E-30

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

To swap your Home City and World Time City ................................................... E-32

To set an alarm time ............................................................................................. E-34

To turn an alarm on and off.................................................................................. E-36

To turn the Hourly Time Signal on and off .......................................................... E-37

To illuminate the face manually ...........................................................................E-38

To specify the illumination duration ................................................................... E-39

To turn the auto light switch on and off.............................................................. E-41

To adjust home positions..................................................................................... E-42

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General Guide

• Press C to change from mode to mode.

• In any mode (except a setting mode), press B to illuminate the face.

Timekeeping Mode

▲

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Timekeeping

You can adjust the Home Time city date and time in the Timekeeping Mode.

• The analog time of this watch is synchronized with the digital time. The analog time setting is adjusted automatically whenever you change the digital time.

• If the analog time does not match the digital time for any reason, use the procedure described under “To adjust home positions” (page E-42) to match the analog setting to the digital setting.

• Pressing D in the Timekeeping Mode toggles digital display between the Home City Date and Home City Time.

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Home City Date Home City Time

Seconds

▲

Hour : MinutesDay of week

PM indicator

▲

Seconds

Day of weekMonth Day

Stopwatch Mode (page E-14)

▲

Alarm Mode (page E-33)

To set the digital time and date

PM indicator

City code

Seconds

Hour : Minutes

1. In the Timekeeping Mode, hold down A for about three

seconds until the currently selected city code flashes in the right digital dial. This is the setting mode.

2. Use D (east) and B (west) to display the city code

you want to select.

• Make sure you select your Home City code before

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

Countdown Timer Mode (page E-25)

▲

World Time Mode (page E-29)

▲

changing any other setting.

Table” at the back of this manual.

▲

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Operation Guide 5229

3. Press C to change the flashing screen content in the sequence shown below to

select the other settings.

City Code

Illumination

Duration

4. When the setting you want to change is flashing, use D or B to change it as

described below.

Screen:

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Daylight Saving Time (DST)

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.

DST

To do this: Do this:

Change the city code

Toggle the DST setting between Daylight Saving Time (on) and Standard Time (OFF).

To change the Daylight Saving Time (summer time) setting

DST indicator

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12/24-Hour

Format

Day

1. In the Timekeeping Mode, hold down A for about three

2. Press C. This will display the DST setting screen.

3. Use D to toggle the DST setting on (on) and off (OFF).

4. When the setting you want is selected, press A to exit

• The DST indicator appears to indicate that Daylight

Month

seconds until the currently selected city code flashes in the right digital dial. This is the setting mode.

• The default DST setting is off (OFF).

the setting mode.

Saving Time is turned on.

Seconds

Year

Use D (east) and B (west).

Press D.

Hour

Minutes

Stopwatch

You can use the stopwatch to measure elapsed time, lap times and split times. If you specify a distance value, the stopwatch also will calculate and display speeds.

• The digital display range of the stopwatch is 99 hours, 59 minutes, 59.999 seconds. The stopwatch continues to run until you stop it. If it reaches the above limit, it will restart the time measurement from zero.

• The stopwatch operation continues even if you exit the

Speed hand Right dial

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display segments

Stopwatch Mode. If you exit the Stopwatch Mode while a stopwatch operation is in progress, the segments along the top of the right digital dial (right dial display segments) will indicate the seconds of the current time. Each segment represents one second. This is to let you know that a stopwatch operation is in progress.

• All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C (page E-7).

Screen: To do this:

5. Press A to exit the setting mode.

• The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.

12-hour and 24-hour timekeeping

• With the 12-hour format, the PM indicator appears in the left digital dial for times in the range of noon to 11:59 p.m. and no indicator appears for times in the range of midnight to 11:59 a.m.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without the PM indicator.

• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.

Important!

• Check to make sure that the speed hand is not moving before you perform any Stopwatch Mode button operation.

Specifying a Distance Value

You can use the procedure below to specify a distance value, if you want. If you specify a distance value, the watch will calculate and indicate speed for certain stopwatch operations.

• The distance value represents kilometers, miles, or any other distance unit you want. Specifying a distance value of 10.0, for example, can mean 10.0 kilometers or 10.0 miles.

• No speed calculation is performed when 0.0 is specified as the current distance value.

• For lap time readings, you can specify either the lap distance (when all the laps are the same distance) or the total race distance.

• For split time readings, you can specify the total race distance only. Though the watch will indicate a speed each time you take a split reading, they will be based on the total race distance, and so they will not indicate actual intermediate split speeds.

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

Reset the seconds to 00

Change the hour and minutes

Change the year, month, or day

Toggle the face illumination duration between 1.5 seconds (LT1 ) and three seconds (LT3 )

Do this:

Press D.

Use D (+) and B (–).

Press D.

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To specify a distance value

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Time Measurement

You need to specify either lap time (page E-20) or split time (page E-22) measurement before you start a stopwatch operation.

• If you want to measure total elapsed time, select split time measurement.

To specify lap time or split time readings

1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.

• Make sure that

• If you need to reset the stopwatch to all zeros, press A.

2. You can toggle between

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1. In the Stopwatch Mode, make sure the stopwatch is stopped and reset to all zeros.

• If you need to reset the stopwatch to all zeros, press A.

Hold down A for about three seconds until the current distance value setting flashes in the left digital

• This is the distance value setting mode.

3. Press C to move the flashing between the values on the left side and right side of the distance value decimal point.

4. While a distance value is flashing, use D (+) and B (–) to change it.

• You can specify a distance value in the range of 0.1 to

99.9.

5. After specifying the distance value you want, press A to exit the setting mode.

LAP (lap times) or SPL (split times) is shown in the left digital dial.

LAP

(lap times) and

SPL

(split times) by pressing A.

▲

dial

How speed is indicated

1000 indicator

OVER

Speed hand (Up to 100)

Segments (100 unit)

Elapsed Time Measurement

Use the following procedure to measure elapsed time, without taking lap time or split time readings.

To perform elapsed time measurement

Select split time ( D Start ➝ D Stop ➝ A Reset

• If you have a distance value (page E-15) specified for the current elapsed time measurement, the right dial display segments and speed hand will indicate the speed when you press D to stop the elapsed time operation.

• After pressing D to stop an elapsed time operation, you could press D again to restart from the point where you left off.

• While an elapsed time measurement operation is being performed in the Stopwatch Mode, the watch will indicate a speed value, which is calculated based on the distance you specified and the elapsed time. The speed value is indicated as described below. Speed hand: Up to 100 Right dial display segments: 100 unit A 1000 indicator points to 1000 (located to the right of the right dial display segments) when the speed value is between 1000 and 1998.

• The speed hand indicates speed values less than 100. Only even-numbered values are indicated.

•

Speed can be indicated from 0 to 1998. OVE R is indicated by the speed hand when the speed exceeds 1998.

Example:

When the speed value is 1,740. Speed hand: Indicates 40. Right dial display segments: Indicate 700. 1000 indicator: Displayed

SPL

) measurement and then perform the following button operations.

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