G-Shock GW-1500A-1AV User Manual

MO0405-EA

Operation Guide 3366

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to read this manual carefully and keep it on hand for later reference when necessary.

•This watch does not have a time zone that corresponds to the Greenwich Mean Time differential of –3.5 hours. Because of this, the radio-controlled timekeeping and World Time functions will not display the correct time for Newfoundland, Canada.

Expose the watch to bright light to charge its battery before using it.

You can use this watch even as its battery is being charged by exposure to bright light.

•Be sure to read “Power Supply” for important information you need to know when exposing the watch to bright light.

If the digital display of the watch is blank...

Digital display

Power saving on indicator

If the Power Saving on indicator is flashing on the display, it means that the Power Saving function has turned off the display to conserve power. Power Saving automatically turns off the display and enters a sleep state whenever the watch is left for a certain period where it is dark.

•The initial factory default setting is Power Saving on.

•The watch will recover from the sleep state if you move it

to a well-lit area,* if you press any button, or if you angle the watch towards your face for reading.

*It can take up to two seconds for the display to turn on.

•See “Power Saving” for more information.

General Guide

•Press Cto change from mode to mode.

•In any mode, press B to illuminate the face of the watch.

•The Battery Level Screen shows the current battery level. See “Battery Power Levels” for more information.

Battery Level Screen

Timekeeping Mode

Press C.

▲

WED

▲

Radio-controlled Atomic Timekeeping

Hour hand

Minute hand

WED

Month. Day

Day of week

This watch receives a time calibration signal and updates its time setting accordingly. The time calibration signal includes both Standard Time and Daylight Saving Time (summer time) data.

• This watch is designed to pick up the time calibration signal transmitted in the United States (Fort Collins, Colorado).

• The U.S. time calibration signal can be picked up by the watch while in North America*.

* The term “North America” in this manual refers to the area that consists of Canada, the continental United States, and Mexico.

Current Time Setting

This watch automatically adjusts its digital time setting in accordance with a time calibration signal.You can also perform a manual procedure to set the time and date, when necessary.

•The first thing you should do after purchasing this watch is to set your Home City, which is the city where you will normally use the watch. For more information, see “To set your Home City” below.

•When using the watch outside the range of the U.S. transmitter, you have to adjust the current time setting manually as required. See “Timekeeping” for more information about manual time setting.

•The analog time of this watch is synchronized with the digital time. Because of this, the analog time setting is automatically adjusted whenever you change the digital setting. See “Analog Timekeeping” for more information.

To set your Home City

DST indicator

l		l	l
l			l
l				l
l			l	l
l	l l l l

City code

1.In the Timekeeping Mode, hold down A until the city code starts to flash, which indicates the setting screen.

2.Press D to scroll eastwardly through the city codes until the one you want to use as your Home City is displayed.

•The following are the city codes of the major cities in North America where signal reception is possible. LAX: Los Angeles, San Francisco, Las Vegas,

Seattle/Tacoma, Vancouver, Tijuana DEN: Denver, El Paso, Edmonton, Culiacan CHI: Chicago, Houston, Dallas/Fort Worth,

New Orleans, Winnipeg, Mexico City NYC: New York, Detroit, Miami, Boston, Montreal

•Note that this watch does not have a city code that corresponds to Newfoundland.

3.Press Ato exit the setting screen.

Note

•Normally, your watch should show the correct time as soon as you select your Home City code. If it does not, it should adjust automatically after the next auto receive (in the middle of the night). You can also perform manual receive or you can set the time manually.

•See the map under “Reception Range” for information about the reception range of the watch.

•The DST indicator on the display indicates that Daylight Saving Time (summer time) is in effect for the selected Home City code. If you are in an area that does not use Daylight Saving Time (summer time), turn off the DST setting.

•If ON or OFF starts to flash in place of the city code when you hold down A in step 1 of the above procedure, press A again to exit the setting screen. After that, press D and then perform step 1 again.

About This Manual

Hour hand Minute hand

Digital display

World Time Mode

•Button operations are indicated using the letters shown in the illustration.

•Most of the display examples in this manual show only the digital display, without the analog hands.

•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.

Alarm Mode

TYO
▲	▲
Hand Setting Mode	Stopwatch Mode
▲	STW
	▲

To display the digital time and last signal screens

In the Timekeeping Mode, press A or Dto change the digital screen contents as shown below.

•The last signal screens show the date and time of the last successful time calibration signal reception. If time calibration signal reception has not been successful since the battery level dropped to Level 4 or since the battery was replaced, --- is shown in place of the receive date and receive time in the last signal screens.

Seconds		Date			Last Signal Screens
▲	Press A.		Press D.
	▲		▲	▲	2 seconds
A
	A				Receive date
▲
Time		2 seconds	Month. Day
					Receive time
	Hour : Minutes
		Day of week
PM indicator

•The last signal screens continue to cycle on the display for about one or two minutes. After that, the Timekeeping Mode screen reappears.

Time Calibration Signal Reception

There are two different methods you can use to receive the time calibration signal: auto receive and manual receive.

• Auto Receive

With auto receive, the watch automatically picks up the time calibration signal four times a day at midnight, 2:00 a.m., 3:00 a.m., and 4:00 a.m. For more information, see “About Auto Receive”.

• Manual Receive

Manual receive lets you start a time calibration signal reception with the press of a button. For more information, see “To perform manual receive”.

Important!

•When getting ready to receive the time calibration signal, position the watch as shown in the nearby illustration, with its 12 o’clock side facing towards a window. Make sure there are no metal objects nearby.

Resin Band Metal Band

• The watch should not be on its side or facing the wrong way.

1

Receiving indicator

Operation Guide 3366

•Proper signal reception can be difficult or even impossible under the conditions listed below.

Inside or	Inside a	Near	Near a	Near high-	Among or
among	vehicle	household	construction	tension	behind
buildings		appliances,	site, airport, or	power lines	mountains
		office	other sources
		equipment,	of electrical
		or a mobile	noise
		phone

•Signal reception is normally better at night than during the day.

•Time calibration signal reception takes from two to six minutes. Take care that you do not perform any button operations or move the watch during this time.

Reception Range

600 miles

Fort Collins 2,000 miles

•This watch receives the time calibration signal transmitted in the U.S. (Fort Collins, Colorado).

•Under good reception conditions, signal reception is possible within a radius of about 2,000 miles (3,000 kilometers) from the Fort Collins transmitter.

•At distances further than about 600 miles (1,000 kilometers) from the Fort Collins transmitter, signal reception may not be possible during certain times of year or times of day. Radio interference may also cause problems with reception.

•See the information under “Signal Reception Troubleshooting” if you experience problems with time calibration signal reception.

About Auto Receive

When auto receive is turned on, the watch automatically starts to receive the time calibration signal when the time in the Timekeeping Mode reaches 0:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. each day (calibration times). The watch will also perform an additional auto receive at 5:00 a.m. if none of the regularly scheduled auto receive operations are successful.

Note

•Auto receive is turned on whenever LAX, DEN, CHI, or NYC is selected as the Home City code.You can also turn auto receive on and off manually. See “To turn auto receive on and off” for more information.

•Auto receive is performed only if the watch is in the Timekeeping Mode or World Time Mode when one of the calibration times is reached. It is not performed if a calibration time is reached while an alarm is sounding, or while you are configuring settings (while settings are flashing on the display).

•Auto receipt of the calibration signal is designed to be performed early in the morning, while you sleep (provided that the Timekeeping Mode time is set correctly). Before going to bed for the night, remove the watch from your wrist, and put it in a location where it can easily receive the signal.

•When auto receive is turned on, the watch receives the calibration signal for two to six minutes everyday when the time in the Timekeeping Mode reaches each of the calibration times. Do not perform any button operation within six minutes before or after any one of the calibration times. Doing so can interfere with correct calibration.

•Remember that reception of the calibration signal depends on the current time shown on the digital display. The receive operation will be performed whenever the display shows any one of the calibration times, regardless of whether or not the displayed time is actually the correct time.

•When two, three, or four receptions are successful, the watch uses the data of the last reception for calibration. When only one reception is successful, the watch uses the data of the successful reception.

About the Receiving Indicator

The receiving indicator shows the strength of the calibration signal being received. For best reception, be sure to keep the watch in a location where signal strength is strongest.

Weak Strong

Receiving indicator

•Even in an area where signal strength is strong, it takes about 10 seconds for signal reception to stabilize enough for the receiving indicator to indicate signal strength.

•Use the receiving indicator as a guide for checking signal strength and for finding the best location for the watch during signal reception.

To perform manual receive

1.Place the watch on a stable surface so its top (12 o’clock side) is facing towards a window.

2.While any screen other than the last signal screen is on

the display in the Timekeeping Mode, hold down D for about two seconds until the watch beeps.

3. Release D and the receiving indicator will appear on the display to indicate that signal reception has started.

• Time calibration signal reception takes from two to six minutes. Take care that you do not perform any button operations or move the watch during this time.

•After signal reception is complete, the watch beeps and the display of the watch changes to the last signal screen.

Note

•To interrupt a receive operation and return to the Timekeeping Mode, press D.

•If the receive operation is unsuccessful, ERR appears on the display for about one or two minutes. After that, the watch returns to the Timekeeping Mode.

•You can also change from the last signal or ERR screen to the normal timekeeping screen by pressing D.

To turn auto receive on and off

1.In the Timekeeping Mode, press D to display the last signal screen.

2.Hold down A until the current auto receive setting (ON

	l	l l	l	or OFF) flashes on the display. This is the setting
				screen.
	ll		l
			l	• If holding down A does not display the setting
	l
	l l l		l	screen, check the current Home City code setting.

Press D to return to the Timekeeping Mode screen and then refer to “To set your Home City” for information about city codes that support signal reception.

3. Press D to toggle auto receive on (ON) and off (OFF).

4. Press A to exit the setting screen and return to the last signal screen.

• If you want to the return to the Timekeeping Mode screen, press D.

Signal Reception Troubleshooting

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

	Problem	Probable Cause	What you should do
	Cannot perform	• The watch is not in the Timekeeping	• Enter the Timekeeping Mode
	manual receive.	Mode.	and try again.
		• Your current Home City is not one of the	• Select LAX, DEN, CHI, or
		following city codes: LAX, DEN,	NYC as your Home City.
		CHI, or NYC.	• Do not perform any button
		• A button operation was performed or the	operations or move the watch
		watch was moved while signal reception	while signal reception is in
		was in progress.	progress.
			• Check to make sure the
			watch is in a location where it
			can receive the signal.
	The watch does	• The watch was not in the Timekeeping	• Perform manual signal
	not perform auto	Mode or World Time Mode when a	receive or wait until the next
	receive.	calibration time arrived.	auto signal receive operation
		• Auto receive is turned off.	is performed.
			• Turn on auto receive.
	The time setting	• If the time is one hour off, the DST	• Change the DST setting to
	is incorrect	setting may be incorrect.	Auto DST.
	following signal		• Select the correct Home City
		• The Home City code setting is not
	reception.		code.
		correct for the area where you are using
		the watch.

•For further information, see “Important!” under “Time Calibration Signal Reception” and “Radio-controlled Atomic Timekeeping Precautions”.

World Time

City code

TYO

Current time in the zone of the selected city code

World Time digitally displays the current time in 30 cities (29 time zones) around the world.

•The watch will perform a signal reception even if it is in the World Time Mode when a calibration time is reached. If this happens, the World Time Mode time settings will be adjusted in accordance with the Timekeeping Mode’s Home City time.

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

•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

In the World Time Mode, press D to scroll eastwardly through city codes (time zones).

•The city code is displayed for about two seconds, and then it is replaced with the current time for that city code. Pressing A while the time is displayed in the World Time Mode causes the city code of the currently selected zone to appear.

•When the currently selected time zone is one that includes mostly ocean, a value indicating the zone's Greenwich Mean Time differential appears in place of a city code.

•If the current time shown for a city is wrong, check your Home City time settings and make the necessary changes.

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
DST indicator	code (time zone) whose Standard Time/Daylight Saving
	Time setting you want to change.
	2. Hold down A to toggle between Daylight Saving Time
	(DST indicator displayed) and Standard Time (DST
	indicator not displayed).
	• The DST indicator appears on the display whenever you
	display a city code for which Daylight Saving Time is
	turned on.

•You cannot toggle between Daylight Saving Time and Standard Time if the displayed city code is GMT or the city code that is currently selected as the Home City in the Timekeeping Mode. To change the DST setting of your Home City, use the procedure under “To change the Daylight Saving Time (summer time) setting”.

•Note that the DST/Standard Time setting affects only the currently displayed city code. Other city codes are not affected.

Alarm

On/Off status

2 seconds

Alarm Screen

▲

Press D.

▲

When the alarm is turned on, the alarm sounds when the alarm time is reached. You can also turn on an Hourly Time Signal, which will cause the watch to beep twice every hour on the hour.

•When the alarm is turned on, the alarm screen

alternates between qmOo (alarm on) and the current alarm time (hour and minutes). When the alarm is off, qmOw (alarm off) remains on the alarm screen.

•All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.

•Pressing D in the Alarm Mode toggles between the alarm screen and Hourly Time Signal screen.

Hourly Time Signal Screen	2