Casio 4304, 4305 manual

MO0508-EB

Operation Guide 4304 4305

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.

3. Press Bten times to exit the setting mode.

• The watch will also return to the Timekeeping Mode if you do not perform any

operation for about three minutes.

• Normally, your watch should show the correct time as soon as you exit the Home

Time Zone setting screen. If it does not, it should adjust automatically after the next

About This Manual

Minute hand

Hour hand

Before using the watch for the first time...

Some watches are sent from the factory with timekeeping stopped, and the second hand at 12 o’clock. Press the A button to start the second hand.

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

•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.

auto receive operation (in the middle of the night). You can also perform manual

receive or you can set the time manually.

• 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.

• 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 time zones (GMT differential values) and

transmitters, see “Transmitters”.

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

of the watch.

• You can disable time signal reception, if you want. See “To set the time and date

manually” for more information.

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

Date

Second hand

General Guide

•This watch is designed so the function of a button is executed when you release the button, not when you press it.

•Use A and B to change from mode to mode as shown below.

Timekeeping Mode (Day)	Timekeeping Mode
	(Day of week)
	Press B.
▲	▲
Timekeeping Mode	Receive Result Mode
	Press A.
▲	▲

Radio-controlled 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.

•This watch is designed to pick up the time calibration signal transmitted in Germany (Mainflingen), England (Rugby), the United States (Fort Collins) and the time calibration signals transmitted in Japan.

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 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 Time Zone

1.In the Timekeeping Mode, hold down B for about five seconds until the currently selected Time Zone appears on the display. This is the setting mode.

•The GMT differential value indicates the time difference in hours between Greenwich Mean Time and the currently selected time zone.

2.Press Ato select the time zone you want to use as your Home Time Zone.

	0 (GMT 0)	: London
Time Zone	+1 (GMT+ 1)	: Paris, Berlin, Milan, Rome, Amsterdam,
	Hamburg, Frankfurt, Vienna, Barcelona, Madrid
	+2 (GMT+ 2)	: Athens
	+9 (GMT+ 9)	: All cities in Japan

E (GMT–5) : New York, Detroit, Miami, Boston, Montreal

C (GMT–6) : Chicago, Houston, Dallas/Fort Worth, New Orleans, Winnipeg, Mexico City

M (GMT–7): Denver, El Paso, Edmonton, Culiacan

P (GMT–8) : Los Angeles, San Francisco, Las Vegas, Seattle/Tacoma, Vancouver, Tijuana

With auto receive, the watch receives the time calibration signal automatically up to five 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 6 o’clock side facing towards a window. Make sure there are no metal objects nearby.

6 o’clock

•The watch should not be facing the wrong 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 ten 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 Code	Transmitter	Frequency
GMT 0	Rugby (England)	60.0 kHz
GMT+1, GMT+2	Mainflingen (Germany)	77.5 kHz
GMT+ 9	Fukushima (Japan)	40.0 kHz
	Fukuoka/Saga (Japan)	60.0 kHz
E(GMT–5), C(GMT–6),	Fort Collins, Colorado	60.0 kHz
M(GMT–7), P(GMT–8)	(the United States)
Reception Ranges
1,500 kilometers		2,000 miles
		(3,000 kilometers)
Rugby		600 miles
		(1,000 kilometers)
Mainflingen		Fort Collins
500 kilometers
500
kilometers	500
	kilometers
Fukuoka/Saga	Fukushima
1,000	1,000

kilometers kilometers

•Under good reception conditions, signal reception is possible within a radius of about 1,500 kilometers (930 miles) from the Mainflingen (Germany) or Rugby (England) transmitter.

•At distances further than about 500 kilometers (310 miles) from the Mainflingen (Germany) or Rugby (England) transmitter, signal reception may not be possible during certain times of year or times of day. Radio interferance may also cause problems with reception.

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