12 o’clock
or

Operation Guide 3219

ξThe watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep state.

ξThe watch will not enter a sleep state while it is in the Stopwatch Mode or Countdown Timer Mode.

To recover from the sleep state

Move the watch to a well-lit area or press any button.

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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” (page E-47) 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.

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If your Home City Code setting is this:The watch can receive the signal from the
transmitter located here:

 

LIS, LON, MAD, PAR, ROM, BER, STO,

Anthorn (England), Mainfl ingen (Germany)

ATH, MOW

 

HKG, BJS

Shangqiu City (China)

TPE, SEL, TYO

Fukushima (Japan), Fukuoka/Saga (Japan)

 

 

HNL, ANC, YVR, LAX, YEA, DEN, MEX,

Fort Collins, Colorado (United States)

CHI, MIA, YTO, NYC, YHZ, YYT

 

Important!

ξThe areas covered by MOW, HNL and ANC are quite far from the calibration signal transmitters, so certain conditions may cause reception problems.

ξWhen HKG or BJS 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 confi gure Home City settings” (page E-42) for information about how to do this.

Approximate Reception RangesUK and German Signals

Anthorn

500 kilometers

1,500 kilometers

Mainfl ingen

The Anthorn signal is receivable within this area.

North American Signal

2,000 miles

(3,000 kilometers)

600 miles (1,000 kilometers)

Fort Collins

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Japanese Signals

Fukushima

500 kilometers

Fukuoka/Saga

1,000 kilometers

Signals are receivable in the Taiwan area when reception conditions are good.

Chinese Signal

500 kilometers

Changchun

 

Beijing

 

Shangqiu

 

Shanghai

 

Chengdu

 

Hong Kong

 

1,500 kilometers

ξEven 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 infl uence of the conditions listed above becomes even greater.

ξSignal 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.

−Mainfl ingen (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)

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

ξAs of December 2010, 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.

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To get ready for a receive operation

1. Confirm that the watch is in the Timekeeping Mode. If it isn’t, use C to enter the Timekeeping Mode (page E-38).

2. The antenna of this watch is located on its 12 o’clock side. Position the watch with 12 o’clock facing towards a window as shown in the nearby illustration. Make sure there are no metal objects nearby.

ξ Signal reception normally is better at night.

ξ 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.

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ξSignal reception may be diffi cult 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

 

 

offi ce

or other

 

 

 

 

equipment,

sources of

 

 

 

 

or a mobile

electrical

 

 

 

 

phone

noise

 

 

 

 

 

 

 

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

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

ξManual Receive: Perform the operation under “To perform manual receive” on page E-29.

Auto Receive

ξWith Auto Receive, the watch performs the receive operation each day automatically up to six times (up to fi ve 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.

ξWhen 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 confi guring settings.

ξYou can use the procedure under “To turn auto receive on and off” (page E-34) to enable or disable auto receive.

To perform manual receive
Receiving

In the Timekeeping Mode, hold down D until the watch

beeps.

 

 

ξ A signal level indicator (L1, L2, or L3, see page E-32)

 

appears on the display after reception starts. Do not

 

move the watch or perform any button operation until

 

GET or ERR appears on the display.

Receiving indicator

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