G-Shock G-2400 User Manual

Module No. 2223

Mode indicator

Minutes

Seconds

1/100 second

RUN number

2223-1

• Press C to change from mode to mode.

GENERAL GUIDE

• Pressing L in any mode (except Stopwatch Mode) illuminates the display for about 2 seconds.

• Pressing D in the Stopwatch Mode illuminates the display for about 2 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 automatically exits the setting screen.

Timekeeping Mode Stopwatch Mode Recall Mode

Press C.

TIMEKEEPING MODE

DST on indicator

Minutes

Hour

Month

Day

PM indicator

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

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

• This watch lets you select one of 27 city codes as your home time city.

• Note that if you want to change your home time city, you must change the city code

• While the DST setting is selected, press D to toggle it on (

• The DST on/off setting you make for the city code that is currently selected in the

• While the city codes setting is selected, use D(+) and B(–) to scroll through the

• For full information on city codes, see the “CITY CODE TABLE”.

• While the 12/24-hour setting is selected, press D to toggle it between 12 and 24.

• While any other setting is selected (flashing), press D(+) or B(–) to change it.

4.After you make the settings you want, press A to exit the setting screen.

• 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, 2039.

• The watch’s built-in full automatic calendar automatically makes allowances for dif-

∗

Day of week

Seconds

Day

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.

first, and then change the DST∗ setting.

Timekeeping Mode (your home time city) is also applied to that city code in the
World Time Mode.

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

Holding down either button changes the setting at high speed.

ferent month lengths and leap years. Once you set the date, there should be no
reason to change it except after the replacement of the watch’s battery.
Daylight Saving Time (DST), which is also sometimes called “summer time” ad­vances the time for one hour, as is the custom in some areas during the summer.
Remember that not all countries or even local areas use Daylight Saving Time.

• With 12-hour timekeeping, times between noon and mid­night are indicated by P (pm), while no indicator appears

Seconds

for times between midnight and noon.

• No indicator appears for any time while 24-hour time­keeping is selected.

To set the time and date

1.While in the Timekeeping Mode, hold down A until the

seconds digits flash on the display, indicating the set­ting screen.

DST

Month

Year

City code

12/24

Hour

Minutes

) and off ( ).

ABOUT THE BACKLIGHT

• Pressing L in any mode (except Stopwatch Mode) illuminates the display for about
2 seconds.

• Pressing D in the Stopwatch Mode illuminates the display for about 2 seconds.

• 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 emits an audible sound whenever the display is illuminated. This 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 turns off whenever an alarm sounds.

World Time Mode

STOPWATCH MODE

About Laps and Splits

Lap Times

A lap time is the amount of time it takes for you to get from one point to
another during a race. When running on a track, for example, you can time
how long it takes you to complete each lap.

Split Times

A split time is the time from the start of a race until the point that the split is
measured. For example, you could measure split times to determine how
long it takes for you to get from the starting line to the 5-kilometer mark, the
10-kilometer mark, etc.

The Stopwatch Mode lets you measure elapsed time, lap
times, and split times. The range of stopwatch is 99 hours,
59 minutes, 59 seconds. You can use the EL backlight by
pressing D at any time while the stopwatch is operating.
The Stopwatch Mode also lets you store the lap times for
multiple laps in memory for later recall when you need
them.
This watch manages data according to RUN, which are
made up of multiple data records. All data stored from the
start of the stopwatch operation to the end of the stop­watch operation makes up one RUN. Within a RUN, each
lap/split operation stores one record. The watch can hold
up to 500 data records in memory.
The final time recorded when you stop the stopwatch op­eration is recorded as the final lap time.

The first hour of a stopwatch operation is measured in units of 1/100 second. After
that, elapsed time is measured in units of one second.

[Up to 1 hour] [After 1 hour]

Split time

Lap time

Minutes

<Example 1>

The following operation causes one RUN, which consists of three data records, to be
stored into memory.

Start

<Example 2>

If you do not perform a lap/split operation, the RUN is made up of a single data
record.

Start

1/100 second

Seconds

1 set 1 set

1st
Lap/Split

1 RUN

1 set = 1 RUN

Hours

2nd
Lap/Split

Alarm Mode

Seconds

Minutes

1 set

Split time

Lap time

Data storedData storedData stored

Stop and
Clear

Data stored

Stop and
Clear

To measure elapsed time

1.Press L to start the stopwatch.

2.Press B to stop the stopwatch.

• You can resume the elapsed time measurement operation by pressing L again.

• You can stop the elapsed time measurement operation by pressing B again.

3.While the elapsed time is stopped on the display, press B to clear the stopwatch
to all zeros.

2223-2

r

Hour Minutes

To measure lap and split times

1.Press L to start the stopwatch.

2.Press L, the split time and lap time for the lap whose time you just measured
appears for about five seconds in the display. Stopwatch timing continues inter­nally.

• After the above, the display automatically switches back to the normal stopwatch

(elapsed time) display. You can repeat the above step as many times as you like,
until 500 records are stored.

• When memory becomes full (after 500 records are stored), the next store operation

causes the message “FULL” to appear on the display. The watch does not record
the new data. Always check how much memory capacity you have left before you
start recording important time data.
(Though there are no way to display how much memory is left.)

3.Press B to stop elapsed time measurement. The time on the display is stored as
the final lap time.

4.Press B again to reset the stopwatch to all zeros.

❈ What you should do after you complete a RUN depends on what you want to do

with the data from the just-completed RUN, as described below.

To save the data of a just-completed RUN

After resetting the stopwatch to all zeros, hold down B until the RUN number in­creases by one. This indicates that the next stopwatch operation will be stored as a
different RUN, leaving the data of the previous RUN in memory as well.

To delete the data of a just-completed RUN

You do not need to do anything. The next time you start a stopwatch operation, the
new RUN data will replace the data of the currently displayed RUN number.

To delete the data of a just-completed RUN and one RUN before it

While the stopwatch is reset to all zeros, hold down A until the RUN number de­creases by one. The next time you start a stopwatch operation, the new RUN data
will replace the data of the currently displayed RUN number.

Deleting Data

Note that you can delete the data for the newest RUN only. If there is data for five
RUN in memory, for example, you could delete the data for RUN 5 only. Then you

could delete the data for RUN 4, RUN 3, and so on. You can use the Recall Mode to
delete all RUN data.

• Holding down A in the Stopwatch Mode causes the RUN number to decrease by

one. The next time you start a stopwatch operation, the new RUN data will replace
the data of the currently displayed RUN number.

It may take a rather long time to perform delete or recall operations in the
Stopwatch Mode or Recall Mode when there is a lot of data stored in memory.

RECALL MODE

Mode indicator

RUN number

Measurement date

2.When the RUN number for the data you want to see is on the display, press D to
switch to its Best Lap display. Now, each press of D scrolls the data in lap/split
number sequence. Holding down D scrolls at high speed.

RUN No.
& date

• The watch can record up to 341 best laps. The data for any RUN after the 341st is

displayed without best lap data.

To delete all RUN data

Hold down A until the watch emits a beep and the message “CLR” flashes on the
display. That indicate the all of data is cleared.

• You cannot delete data for a particular record or RUN in the Recall Mode. You only

can delete all data currently stored in memory.

Important!

• You cannot delete data in the Recall Mode unless the stopwatch is reset to all

zeros. If it isn’t, enter the Stopwatch Mode, reset to all zeros, and then return to the
Recall Mode to delete the data.

The message ERROR flashing on the display indicates that the battery is about
to go dead. When this happens, request battery replacement from your origi­nal retailer or from an authorized CASIO distributor. You will not be able to
enter the Stopwatch Mode and Recall Mode while ERROR is flashing on the
display.

The Recall Mode is used to recall and delete data that is
stored by Stopwatch Mode operations.

Recalling Laps and Splits

1.In the Recall Mode, press B to scroll through RUN num­bers, from the newest to the oldest (number 1). The
data includes the measurement date. (If the elapsed
time operation extends over two different days, only the
start date is recorded.)

Newest

RUN

• RUN numbers are assigned automatically to each RUN,

in sequence with the oldest RUN being 1, the next old­est 2, etc.

Best
Lap

ERROR Message

Next
newest

RUN

Lap 2Lap 1

RUN 1

Final
Lap

City code

DST on indicator

To select a World Time City and view its time

In the World Time Mode, press D(+) or B(–) to scroll through the city codes (time
zones). Holding down either button scrolls at high speed.

Daylight Saving Time (DST)

Daylight Saving Time automatically advances the time setting by one hour from Stan­dard Time. You can make individual Daylight Saving Time settings for each city code
(time zone). Remember that not all countries or even local areas use Daylight Saving
Time.

To switch between Standard Time and Daylight Saving Time

1. In the World Time Mode, use D (+) or B(–) to display the city code (time zone)
whose standard time/daylight saving time setting you want to change.

2.Hold down A to toggle between Daylight Saving Time and Standard Time.

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

which daylight saving time is turned on.

World time

Current time of
your home time

The World Time Mode shows you the current time in 27
cities (30 time zones) around the world.

• For full information on city codes, see the “CITY CODE
TABLE”.

• The time setting of the Timekeeping Mode and the World
Time Mode are synchronized. Whenever you change
the time setting for any city in the Timekeeping Mode,
the settings of all World Time cities are changed ac­cordingly.
The DST on/off setting, however, must be specified in­dividually for each World Time city.

• The format (12-hour and 24-hour) of the World Time
matches the format you select for Timekeeping Mode.

ALARM MODE

Mode indicator

WORLD TIME MODE

Hour : Minutes

DST on indicator

Current time

When the Daily Alarm is turned on, the alarm sounds for 20 seconds at the preset
time each day. Press any button to stop the alarm after it starts to sound. When the
Hourly Time Signal is turned on, the watch beeps every hour on the hour.

To set the alarm time

1.Hold down A until the hour digits flash on the display, indicating the setting screen.

• At this time, the alarm is turned on automatically.

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

3.Use D(+) and B(–) to change the setting. Holding down either button changes
the setting at high speed.

4.After you set the alarm time, press A to exit the setting screen.

• The format (12-hour and 24-hour) of the alarm time matches the format you select

in the Timekeeping Mode.

• When setting the alarm time using the 12-hour format, take care to set the time

correctly as morning or afternoon.

To stop the alarm

Press any button to stop the alarm after it starts to sound.

To turn the Daily Alarm or the Hourly Time Signal on and off

Press D while in the Alarm Mode to change the status of the Daily Alarm and Hourly
Time Signal in the following sequence.

Both OFFBoth ON

To test the alarm

In the Alarm Mode, hold down D to sound the alarm.

• Holding down D to test the alarm also changes the Daily Alarm and Hourly Time

Signal on/off settings.

Daily Alarm
only

Alarm on indicato
Hourly time signal

on indicator

Hourly Time
Signal only