Casio 4723 manual

MO0712-EC

Operation Guide 4723

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.

Starting second hand movement and digital display

	MET	To conserve battery power, the watch is shipped from the
TAC		factory with its functions disabled. Pressing any one of the
HY
	ER	watch’s three buttons will activate its functions, which will
		cause the second hand to start moving and the digital
		display to activate.

Your watch switches automatically between Standard Time and Daylight Saving Time (summer time).

Note, however, that switching cannot be performed correctly if the watch is not able to receive the time calibration signal.

If you notice that the current time is not displayed properly, use the procedure under “To perform manual receive” or “To set the time and date manually” to correct it.

General Guide

•Press Cto change from mode to mode.

•About 1.5 seconds after you enter the Dual Time Mode, Alarm Mode, or Hand Setting Mode the hands will move the position that indicates the current setting of the mode. You cannot

change to another mode while the hands are moving. To change to another mode, either press Cbefore the hands start to move, or wait until the hands stop before pressing C.

•In Timekeeping mode (except when a setting screen is on the display), press Bto illuminate the face of the watch.

Timekeeping Mode

T
ACH
YM
ET	Press C.
ER

▲

About This Manual

Stopwatch 1/20 second hand			• Button operations are indicated using the letters shown
Minute hand			in the illustration.
			• Each section of this manual provides you with the
Hour hand			information you need to perform operations in each
			mode. Further details and technical information can be
TAC	HY	MET	found in the “Reference” section.
		ER

Date

24-Hour hand

Stopwatch

minute hand Second hand (Timekeeping/

Stopwatch)

Stopwatch Mode	Dual Time Mode
▲	▲
Hand Setting Mode	Alarm Mode
▲	▲

Radio-controlled Atomic Timekeeping

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.

•Supported time calibration signals: Germany (Mainflingen), England (Rugby).

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 Time Zone, which is the time zone where you will normally use the watch. For more information, see “To specify your Home Time Zone” below.

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

To specify your Home Time Zone

1.In the Timekeeping Mode, hold down Auntil the GMT differential value starts to flash, which indicates the

DST indicator	setting screen.
	• The second hand will move at high speed to the 12

			o’clock position, where it will stop.
			• The GMT differential value indicates the time
			difference in hours between Greenwich Mean Time
			and the currently selected time zone.
ll l l l ll			• The DST indicator indicates that Daylight Saving Time
l	l
ll		l	(summer time) is turned on for the currently selected
l l l l l ll		l
l
			time zone.
			2. Use B(+) to select the time zone you want to use as
GMT differential			your Home Time Zone.
			• The following are the GMT differential values for major
value
			cities in the Western Europe time zones.
Time Zone	Other major cities in same time zone

+0.0 (DST +1.0) London, Dublin, Lisbon, Casablanca,

Dakar, Abidjan

Paris, Milan, Rome, Madrid,

+1.0 (DST +2.0) Amsterdam, Algiers, Hamburg,

Frankfurt, Vienna, Stockholm, Berlin

Athens, Cairo, Jerusalem, Helsinki,

+2.0 (DST +3.0) Istanbul, Beirut, Damascus,

Cape Town

3. Press A to exit the setting screen.

•The second hand will advance at high speed to the correct position and resume normal movement from there.

•Normally, your watch should show the correct time as soon as you specify your Home Time Zone. 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.

•Selecting +0.0, +1.0, or +2.0 (+1.0, +2.0, or +3.0 while DST is turned on) as your Home Time Zone automatically turns on auto receive. When auto receive is turned on and you are within the reception range, the watch will automatically receive the time calibration signal from the applicable transmitter (in the middle of the night) and update its settings accordingly. For information about the relationship between time zones (GMT differential values) and transmitters, see “Transmitters”.

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

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

•Even if the time calibration signal is received correctly, there are some times when the analog hands may not indicate the correct time. If this happens, use the procedures under “Adjusting the Home Positions” to check the home positions of the

hands, and make adjustments as required.

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”.

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.

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 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 seven minutes, but in some cases it can take as long as 14 minutes. Take care that you do not perform any button operations or move the watch during this time.

•When within range of the applicable transmitter, this watch can receive either the Germany (Mainflingen) or England (Rugby) time calibration signals.

See “Transmitters” for more information.

Reception Ranges

1,500 kilometers

Rugby
500 kilometers	Mainflingen

1