Casio 5061 Radio Controlled Atomic Timekeeping

Operation Guide 5061

Radio Controlled Atomic Timekeeping

This watch receives a time calibration signal and updates its time setting accordingly. However, when using the watch outside of areas covered by time calibration signals, you will have to adjust the settings manually as required. See “Configuring Current Time and Date Settings Manually” for more information.

This section explains how the watch updates its time settings when the city code selected as the Home City is in Japan, North America, Europe, or China, and is one that supports time calibration signal reception.

If your Home City Code setting is this:	The watch can receive the signal from
	the transmitter located here:
LONDON (LON), PARIS (PAR), ATHENS (ATH)	Anthorn (England), Mainflingen (Germany)
HONG KONG (HKG)	Shangqiu City (China)
TOKYO (TYO)	Fukushima (Japan), Fukuoka/Saga (Japan)
HONOLULU (HNL), ANCHORAGE (ANC),
LOS ANGELES (LAX), DENVER (DEN),	Fort Collins, Colorado (United States)
CHICAGO (CHI), NEW YORK (NYC)

Important!

••The areas covered by HONOLULU (HNL) and ANCHORAGE (ANC) are quite far from the calibration signal transmitters, so certain conditions may cause reception problems.

••When HONOLULU (HNL) or HONG KONG (HKG) is selected as the Home City, only the time and date are adjusted according to the time calibration signal. You need to switch manually between standard time and daylight saving time (DST) if required. See “To toggle the Home City time between standard time and daylight saving time” for information about how to do this.

••Signal reception may be difficult or even impossible under the conditions described below.

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

3.What you should do next depends on whether you are using Auto Receive or Manual Receive.

••Auto Receive: Leave the watch over night in the location you selected in step 2. See “Auto Receive” for details.

••Manual Receive: Perform the operation under “To perform manual receive”.

Auto Receive

••With Auto Receive, the watch performs the receive operation each day automatically up to six times (up to five times for the Chinese calibration signal) between the hours of midnight and 5 a.m. (according to the Timekeeping Mode time). When any receive operation is successful, none of the other receive operations for that day are performed.

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

Approximate Reception Ranges

UK and German Signals

Anthorn 500 kilometers

1,500 kilometers

Mainflingen

The Anthorn signal is receivable within this area.

North American Signal

2,000 miles

(3,000 kilometers)

600 miles

(1,000 kilometers)

Fort Collins

To perform manual receive

1.In the Timekeeping Mode, keep Adepressed (for about two seconds) as the x Second Hand goes through the following sequence.

••Moves to the last signal reception result (Y or N), then to READY (or R for some models).

2. The x Second Hand indicates the operations the watch is currently performing.

	When the x Second	It means this:
	Hand is pointed here:
	READY (R)	Watch is setting up for reception.
	WORK (W)	Reception is in progress.
	YES (Y)	Reception was completed
		successfully.

	NO (N)	Reception failed for some reason.

Japanese Signal Chinese Signal

••If signal reception is unstable, the x Second Hand may move between WORK and READY.

Fukushima	500 kilometers	Changchun
500 kilometers		Beijing
		Shangqiu
Fukuoka/Saga		Shanghai
		Chengdu
		Hong Kong
		1,500 kilometers
1,000 kilometers

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

••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)





3.The receive operation is complete when the x Second Hand moves to YES (Y) or NO (N) for about five seconds, and then resumes normal timekeeping.

••When the receive operation is successful, the watch adjusts the time setting accordingly. It does not adjust the setting if the operation failed.

Note

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

••If the x Second Hand is pointing to YES (Y) or NO (N), you can return to the Timekeeping Mode by pressing A.

To check the result of the latest receive operation

In the Timekeeping Mode, press A.

••The x Second Hand will move to YES (Y) for five seconds if the latest receive operation was successful, or NO (N) if it was not. After that, normal timekeeping will resume.

Note

••The x Second Hand will indicate NO (N) if you have adjusted the time or date setting manually since the latest receive operation.

••If the x Second Hand is pointing to YES (Y) or NO (N), you can return to the Timekeeping Mode by pressing A.

Shangqiu (China) transmitter: 500 kilometers (310 miles)

••As of January 2008, China does not use Daylight Saving Time (DST). If China does go to the Daylight Saving Time system in the future, some functions of this watch may no longer operate correctly.

To get ready for a receive operation

1.Confirm that the watch is in the Timekeeping Mode. If it isn’t, hold down Cfor about two seconds to enter the Timekeeping Mode.

2.Place the watch in a location where signal reception is good.

••Position the watch as shown in the nearby illustration, with 12 o’clock

pointed towards a window. Make

12 o’clocksure there are no metal objects

nearby.

or	••Signal reception normally is better
	at night.

••The receive operation 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 operation or move the watch during this time.

Radio-controlled Atomic Timekeeping Precautions

••Strong electrostatic charge can result in the wrong time setting.

••Even if a receive operation is successful, certain conditions can cause the time setting to be off by up to one second.

••The watch is designed to update the date and day of the week automatically for the period January 1, 2000 to December 31, 2099. Updating of the date by signal reception will no longer be performed starting from January 1, 2100.

••If you are in an area where signal reception is not possible, the watch keeps time with the precision noted in “Specifications”.

••The receive operation is disabled under any of the following conditions. −−While power is at Level 2 or lower

−−While the watch is in the power recovery mode

−−When the watch is in the function sleep state (power saving) −−While a countdown time operation is in progress

••A receive operation is cancelled if an alarm sounds while it is being performed.

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