Casio 3070(B) Radio-controlledAtomic Timekeeping, Current Time Setting, Time Calibration Signal Reception, LON, PAR, BER, ATH, TYO, SEL, NYC, CHI, DEN, LAX, LON, PAR, BER

Operation Guide 3070 (B)

Radio-controlled Atomic Timekeeping

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

•This watch is designed to pick up the time calibration signals transmitted in Germany (Mainflingen), England (Anthorn), and 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 also can 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” below.

•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			Hour : Minutes			1. In the Timekeeping Mode, hold down E until
		l	l l l l l l	ll		the city code starts to flash, which indicates
						the setting screen.
	l			ll
		l
	l		l l l l l l
						2. Press A (east) and C (west) to select the
						city code you want to use as your Home City.
						LON	: London
						PAR, BER : Paris, Berlin, Milan, Rome,
PM					Seconds		Amsterdam, Hamburg, Frankfurt,
							Vienna, Barcelona, Madrid
indicator

ATH : Athens

TYO, SEL : Tokyo, Seoul

NYC :New York, Detroit, Miami, Boston, Montreal

CHI :Chicago, Houston, Dallas/Fort Worth, New Orleans, Winnipeg, Mexico City DEN :Denver, El Paso, Edmonton, Culiacan

LAX :Los Angeles, San Francisco, Las Vegas, Seattle/Tacoma, Vancouver, Tijuana

3. Press Eto exit the setting screen.

•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 also can 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 “Time Calibration Signal Reception” and “Transmitters”.

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

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

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,	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, 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.

•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
LON,	Anthorn (England)	60.0 kHz
PAR, BER, ATH	Mainflingen (Germany)	77.5 kHz
TYO, SEL	Fukushima (Japan)	40.0 kHz
	Fukuoka/Saga (Japan)	60.0 kHz
NYC, CHI, DEN, LAX	Fort Collins, Colorado	60.0 kHz
	(the United States)
Approximate Reception Ranges
1,500 kilometers
		2,000 miles
		(3,000 kilometers)
Anthorn
		600 miles
	Mainflingen	(1,000 kilometers)
		Fort
500 kilometers
		Collins
500
kilometers	500
	kilometers
Fukuoka/Saga	Fukushima
1,000	1,000

kilometers kilometers

•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.

Mainflingen (Germany) or Anthorn (England) transmitters: 500 kilometers (310 miles)

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

Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)

•Even when the watch is within the reception range of the transmitter, signal reception will be impossible if the signal is blocked by mountains or other geological formations between the watch and signal source.

•Signal reception is affected by weather, atmospheric conditions, and seasonal changes.

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

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
LON	Standard Time	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am	Midnight
	Daylight Saving Time	2:00 am	3:00 am	4:00 am	5:00 am	Midnight	1:00 am*
PAR	Standard Time	2:00 am	3:00 am	4:00 am	5:00 am	Midnight	1:00 am*
BER	Daylight Saving Time	3:00 am	4:00 am	5:00 am	Midnight	1:00 am*	2:00 am*
ATH	Standard Time	3:00 am	4:00 am	5:00 am	Midnight	1:00 am*	2:00 am*
	Daylight Saving Time	4:00 am	5:00 am	Midnight	1:00 am*	2:00 am*	3:00 am*
TYO	Standard Time	Midnight	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am
SEL
NYC	Standard Time and	Midnight	1:00 am	2:00 am	3:00 am	4:00 am	5:00 am
CHI	Daylight Saving Time
DEN
LAX
						*Next day

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.

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