World time, Stopwatch, Countdown timer – G-Shock GW-9100-1 User Manual

Page 3: Alarms, Operation guide 3089

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Operation Guide 3089

3

To check the latest signal reception results

In the Timekeeping Mode, press D to display the Last
Signal screen.

• When receive is successful, the display shows the time

and date that receive was successful. - - : - - indicates
that none of the reception operations were successful.

• To return to the Timekeeping Mode, press D.

Receive date

Receive time

Problem

Cannot perform
manual receive.

Time setting is
incorrect
following signal
reception.

Probable Cause

• The watch is not in the Timekeeping Mode.

• Your current Home City is not one of the

following:
LIS, LON, MAD, PAR, ROM, BER, STO,
ATH, MOW, HKG, BJS, TPE, SEL, TYO,
HNL, ANC,YVR, LAX, YEA, DEN, MEX,
YWG, CHI, MIA, YTO, NYC, YHZ,
or
YYT

• If the time is one hour off, the DST

setting may be incorrect.

• The Home City code setting is not

correct for the area where you are using
the watch.

What you should do

• Enter the Timekeeping Mode

and try again.

• Select LIS, LON, MAD, PAR,

ROM, BER, STO, ATH, MOW,
HKG, BJS, TPE, SEL, TYO,
HNL, ANC, YVR, LAX, YEA,
DEN, MEX, YWG, CHI, MIA,
YTO, NYC, YHZ,
or YYT as
your Home City.

• Change the DST setting to

Auto DST.

• Select the correct Home City

code.

Signal Reception Troubleshooting

Check the following points whenever you experience problems with signal reception.

• For further information, see “Important!” under “Time Calibration Signal Reception”

and “Radio-controlled Atomic Timekeeping Precautions”.

World Time

The World Time Mode shows you the current time in 48
cities (29 time zones) around the world.

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

Home City time settings and make the necessary
changes.

• 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

While in the World Time Mode, press D to scroll
eastward through the city codes (time zones).

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

Table”.

City code

Current time in
selected city

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 to toggle Daylight Saving Time (DST

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

• The DST indicator will appear 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.

DST indicator

Stopwatch

The stopwatch lets you measure elapsed time, split times,
and two finishes. It also includes Auto-Start.

• The display range of the stopwatch is 999 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.

• Exiting the Stopwatch Mode while a split time is frozen

on the display clears the split time and returns to
elapsed time measurement.

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

Stopwatch Mode, which you enter by pressing C.

1/100 second

Hours

Minutes

Seconds

D
Start

Stop

Elapsed Time

➤D

Re-start

Clear

Stop

D

➤D

➤A

Split Time

D
Start

Split

Split release

Clear

A

Stop

A

➤D

➤A

Two Finishes

D
Start

Split

Stop

Clear

A

Split release

D

➤A

➤A

First runner finishes.
Display time of first
runner.

Second runner
finishes.

Display time of
second runner.

(

displayed)

To measure times with the stopwatch

About Auto-Start

With Auto-Start, the watch performs a 5-second countdown, and stopwatch operation
starts automatically when the countdown reaches zero. During the final three seconds
of the countdown, a beeper sounds with each second.

To use Auto-Start

1. While the stopwatch screen is showing all zeros in the

Stopwatch Mode, press A.

• This displays a 5-second countdown screen.

• To return to the all zeros screen, press A again.

2. Press D to start the countdown.

• When the countdown reaches zero, a tone sounds and a

stopwatch timing operation starts automatically.

• Pressing D while the Auto-Start countdown is in

progress starts the stopwatch immediately.

Countdown Timer

You can set the countdown timer within a range of one to
60 minutes. An alarm sounds when the countdown
reaches zero.

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

Countdown Timer Mode, which you enter by pressing
C.

Timekeeping Mode time

1/10 second

Minutes

Seconds

To set the countdown start time

1. While the countdown start time is on the display in the Countdown Timer Mode,

hold down A until the current countdown start time starts to flash, which indicates
the setting screen.

• If the countdown start time is not displayed, use the procedure under “To use the

countdown timer” to display it.

2. While a setting is flashing, use D (+) and B (–) to change it.
3. Press A to exit the setting screen.

To use the countdown timer

Press D while in the Countdown Timer Mode to start the countdown timer.

• When the end of the countdown is reached, the alarm sounds for 10 seconds or until

you stop it by pressing any button. The countdown time is reset automatically to its
starting value after the alarm stops.

• Press D while a countdown operation is in progress to pause it. Press D again to

resume the countdown.

• To stop a countdown operation completely, first pause it (by pressing D), and then

press A. This returns the countdown time to its starting value.

Alarms

You can set five independent Daily Alarms. When an
alarm is turned on, the alarm tone sounds when the alarm
time is reached. One of the alarms can be configured as a
snooze alarm or a one-time alarm, while the other four are
one-time alarms.
You can also turn on an Hourly Time Signal that causes
the watch to beep twice every hour on the hour.

• There are five alarm screens numbered1 through 5.

The hourly time signal screen is indicated by :

00

• When you enter the Alarm Mode, the screen you were

viewing when you last exited the mode appears first.

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

Alarm Mode, which you enter by pressing C.

Timekeeping Mode time

Alarm time
(Hours : Minutes)

Alarm number

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.

x3

x4

x1

x2

:00

x5

• You can configure Alarm1 as a snooze alarm or a one-time alarm. Alarms 2

through

5 can be used as one-time alarms only.

• The snooze alarm repeats every five minutes.

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

starts to flash. This indicates the setting screen.

3. Press C to move the flashing between the hour and minute settings.
4. While a setting is flashing, use D (+) and B (–) to change it.

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

correctly as a.m. (no indicator) or p.m. (P indicator).

5. Press A to exit the setting screen.

Alarm Operation

The alarm sounds at the preset time for about 10 seconds. In the case of the snooze
alarm, the alarm operation is performed a total of seven times, every five minutes, or
until you turn the alarm off or change it to a one-time alarm.

Note

• Pressing any button stops the alarm tone operation.

• Performing any one of the following operations during a 5-minute interval between

snooze alarms cancels the current snooze alarm operation.

Displaying the Timekeeping Mode setting screen
Displaying the Alarm

1 setting screen

To test the alarm

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

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