Casio 3140 Owner's Manual

MA0810-EA

Operation Guide 3140

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.

•This watch does not have a time zone that corresponds to the UTC offset of

–3.5 hours. Because of this, the radio-controlled timekeeping and World Time functions will not display the correct time for Newfoundland, Canada.

Caution!

Your watch is shipped with its Auto Display feature (which continually changes the contents of the digital display) turned on. Calibration signal reception is disabled while Auto Display is turned on.

Press any button to turn off Auto Display and return to the Timekeeping Mode.

About This Manual

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

• Each section of this manual provides you with the information you need in order to perform operations in each mode. Further details and technical information can be found in the “Reference” section.

General Guide

•Press C to change from mode to mode.

•In any mode (except when a setting screen is on the display), press B to illuminate the display.

Timekeeping Mode

World Time Mode

PRESS .

Radio-controlled Atomic Timekeeping

Month – Day

Day of week

Year

PM indicator	DST
Home Time	indicator
(Hour : Minutes Seconds)

This watch receives a time calibration signal and updates its time setting accordingly.

•Supported time calibration signals: United States (Fort Collins), England (Anthorn).

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

Current Time Setting

This watch adjusts its time setting automatically 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 specify your Home City (the city where you normally will use the watch). For more information, see “To specify your Home City”.

•When using the watch outside the areas covered by the time signal transmitters, you will have to adjust the current time setting manually as required. See “Timekeeping” for more information about manual time settings.

•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.

To specify your Home City

	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(east) and B(west) to select the city code you
				want to use as your Home City.
				• Time calibration signal reception is supported when
				any one of the city codes shown in the table below is
				selected as your Home City.
		U.S. Signal				U.K. Signal
City	City		City	City	City	City	City	City
Code	Name		Code	Name	Code	Name	Code	Name
HNL	Honolulu		YWG	Winnipeg	LIS	Lisbon	ATH	Athens
ANC	Anchorage		CHI	Chicago	LON	London	MOW	Moscow
YVR	Vancouver		MIA	Miami	MAD	Madrid
LAX	Los Angeles		YTO	Toronto	PAR	Paris
YEA	Edmonton		NYC	New York	ROM	Rome
DEN	Denver		YHZ	Halifax	BER	Berlin
MEX	Mexico City		YYT	St. Johns	STO	Stockholm

3. Press A twice to exit the setting screen.

Countdown		Stopwatch Mode		Alarm Mode
Timer Mode

Important!

•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 operation (in the middle of the night). You can also perform manual receive or you can set the time manually.

•The watch will receive the time calibration signal automatically from the applicable transmitter (in the middle of the night) and update its settings accordingly. For information about the relationship between city codes and transmitters, see “Home City Codes and Transmitters”.

•Under factory default settings, auto receive is turned off for all of the following city codes: HNL (Honolulu), ANC (Anchorage), ATH (Athens), and MOW (Moscow). For details about turning on auto receive for these city codes, see “To turn auto receive on and off”.

•You can disable time signal reception, if you want. See “To turn auto receive on and off” for more information.

•See the maps under “Approximate Reception Ranges” for information about the reception ranges of the watch.

•If you are in an area that does not use Daylight Saving Time (summertime), turn off the DST setting.

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 receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. For more information, see “About Auto Receive”.

•Manual Receive

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

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Operation Guide 3140

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. This watch is designed to receive a time calibration signal late at night. Because of this, you should place the watch near a window as shown in the illustration when you take it off at night. Make sure there are no metal objects nearby.

12 O’CLOCK

OR

•Make sure the watch is facing the right way.

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

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

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

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

•The time calibration signal the watch will attempt to pick up depends on its current Home City code setting as shown below.

Home City Codes and Transmitters

	Home City Code	Transmitter	Frequency
	HNL*, ANC*, YVR, LAX, YEA,	Fort Collins, Colorado
	DEN, MEX, YWG, CHI, MIA,		60.0 kHz
		(the United States)
	YTO, NYC, YHZ, YYT
	LIS, LON, MAD, PAR, ROM,	Anthorn (England)	60.0 kHz
	BER, STO, ATH*, MOW*

*The areas covered by the HNL, ANC, ATH, and MOW city codes are quite far from the time calibration signal transmitters, and so certain conditions may cause problems with signal reception.

Approximate Reception Ranges

U.K. Signal

U.S. Signal

1,500 kilometers

2,000 miles

(3,000 kilometers)

Anthorn

600 miles

(1,000 kilometers)

500 kilometers	Fort Collins

U.K. signal transmitter approximate reception range as of April 2007

•Signal reception may not be possible at the distances noted below during certain times of the year or day. Radio interference may also cause problems with reception.

Anthorn (England) transmitter: 500 kilometers (310 miles)

Fort Collins (United States) transmitter: 600 miles (1,000 kilometers)

•In April 2007, the U.K. signal transmitter was moved from Rugby to Anthorn, which resulted in a slight shift in the approximate reception range of the signal. The shift is so slight that there is virtually no change in the ability to receive the signal.

•Even when the watch is within the reception range of a transmitter, signal reception may be impossible at times due to the effects of geographic contours, structures, weather, the season of the year, the time of day, radio interference, etc. Note that the signal becomes weaker at distances of approximately 500 kilometers from the transmitter, which means that the influence of the conditions listed above becomes even greater.

About Auto Receive

The watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. The reception schedule (calibration times) depends on your currently selected Home City, and whether standard time or Daylight Saving Time is selected for your Home City.

	Your Home City			Auto Receive Start Times
			1	2	3	4	5	6
	HNL, ANC, YVR,	Standard Time
	LAX, YEA, DEN,
	MEX, YWG, CHI,	Daylight	Midnight	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am
	MIA, YTO, NYC,
		Saving Time
	YHZ, YYT
		Standard Time	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am	Midnight
	LIS, LON							*
		Daylight	2:00 am	3:00 am	4:00 am	5:00 am	Midnight	1:00 am
		Saving Time					*	*
	MAD, PAR, ROM,	Standard Time	2:00 am	3:00 am	4:00 am	5:00 am	Midnight	1:00 am
							*	*
	BER, STO	Daylight	3:00 am	4:00 am	5:00 am	Midnight	1:00 am	2:00 am
		Saving Time				*	*	*
		Standard Time	3:00 am	4:00 am	5:00 am	Midnight	1:00 am	2:00 am
	ATH					*	*	*
		Daylight	4:00 am	5:00 am	Midnight	1:00 am	2:00 am	3:00 am
		Saving Time			*	*	*	*
		Standard Time	4:00 am	5:00 am	Midnight	1:00 am	2:00 am	3:00 am
	MOW				*	*	*	*
		Daylight	5:00 am	Midnight	1:00 am	2:00 am	3:00 am	4:00 am
		Saving Time		*	*	*	*	*

Note

•When a calibration time is reached, the watch will receive the calibration signal only if it is in either the Timekeeping Mode or World Time Mode. Reception is not performed if a calibration time is reached while you are configuring settings.

•Auto receive 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 receive the signal easily.

•The watch receives the calibration signal for two to seven minutes everyday when the time in the Timekeeping Mode reaches each of the calibration times. Avoid performing any button operation within seven 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 in the Timekeeping Mode. The receive operation will be performed whenever the display shows any one of the calibration times, regardless of whether or not the displayed time actually is the correct time.

•Calibration signal reception is disabled while a countdown timer operation is in progress.

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
(Level 0)	(Level 3)

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 receive operations.

•Following reception of the time calibration signal and calibration of the watch’s time setting, the Level 3 receiving indicator will remain on the display in all modes. The Level 3 receiving indicator will not be displayed if signal reception was unsuccessful or after you adjust the current time setting manually.

•The Level 3 receiving indicator is displayed only when the watch is able to receive both time and date data successfully. It does not appear when only time data is received.

•The Level 3 receiving indicator indicates that at least one of the auto calibration signal receive operations was successful. Note, however, that the Level 3 receiving indicator is cleared from the display when the first auto receive operation of the day is performed.

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. In the Timekeeping Mode, hold down D for about two
	seconds until RC! appears on the display.
	• Time calibration signal reception takes from two to
	seven minutes. Take care that you do not perform any
	button operations or move the watch during this time.
Receiving indicator	• After signal reception is complete, 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, the message 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.

•Calibration signal reception is disabled while a countdown timer operation is in progress.

To turn auto receive on and off

1. In the Timekeeping Mode, press D to display the Last

ON/OFF STATUS	Signal screen.
	2. Hold down A until the receiving indicator and current
	auto receive setting (	or	) start to flash.
	This is the setting screen.

•Note that the setting screen will not appear if the currently selected Home City is one that does not support time calibration reception.

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

4. Press A to exit the setting screen.

•For information about city codes that support signal receive, see “To specify your Home City”.

To display the Last Signal screen

In the Timekeeping Mode, press D to display the Last Signal screen (indicated by GET). The Last Signal screen shows the date and time of the last successful time calibration signal reception.

	Current Time and Date Screen		Last Signal Screen
	Day of week		Receive date
	Month – Day	Year
		PRESS .
		DST indicator
	PM indicator Home Time		Receive time
	(Hour : Minutes Seconds)

* Next day

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