Operation Guide 3172

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.

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.

•You can use the procedure under “To turn auto receive on and off” to enable or disable auto receive.

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, ATH, MOW

Anthorn (England), Mainflingen (Germany)

 

 

HKG, BJS

Shangqiu City (China)

 

 

TPE, SEL, TYO

Fukushima (Japan), Fukuoka/Saga (Japan)

 

 

HNL, ANC, YVR, LAX, YEA, DEN, MEX, CHI, NYC, YHZ,

Fort Collins, Colorado (United States)

YYT

 

Important!

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

•When 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 configure Home City settings” for information about how to do this.

Approximate Reception Ranges

UK and German Signals

North American Signal

Anthorn

2,000 miles

 

(3,000 kilometers)

500 kilometers

 

1,500 kilometers

600 miles

(1,000 kilometers)

The Anthorn signal is

Fort Collins

receivable within this area

Mainflingen

Japanese Signals

Chinese Signal

Fukushima

Changchun

500 kilometers

500 kilometers

 

Beijing

 

Shangqiu

Fukuoka/Saga

Shanghai

Chengdu

 

 

Hong Kong

1,000 kilometers

1,500 kilometers

 

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

• 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)

To perform manual receive

Receiving

Receiving indicator

Receive successful

Receive failed

If there was a previously

successful reception

If no reception was

successful

1.Use D to select the Receive Mode (R/C) as shown in “Selecting a Mode”.

2.Hold down A.

•Keep A depressed until RC Hold appears on the display and the receiving indicator starts flashing.

•A signal level indicator (L1, L2, or L3, see “Signal Level Indicator”) appears on the display after reception starts. Do not move the watch or perform any button operation until GET or ERR appears in the upper left corner of the screen.

•If the receive operation is successful, the reception date and time

appear on the display, along with the GET indicator.

The watch will return to the Timekeeping Mode if you press D or if you do not perform any button operation for about two or three minutes.

•If the current reception fails but a previous reception (within the last 24 hours) was successful, the display shows the receiving indicator and the ERR indicator. If the ERR indicator only is displayed (without the receiving indicator), it means that all of the receive operations over the past 24 hours have failed.

The watch will return to the Timekeeping Mode without changing the time setting if you press D or if you do not perform any button operation for about two or three minutes.

Note

To interrupt a receive operation and return to the Receive Mode, press A.

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

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

• As of January 2009, 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, use D to enter the Timekeeping Mode.

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.

•Signal reception normally is better at night.

•The receive operation takes from two to seven minutes,

12 o’clock

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.

or

 

Signal Level Indicator

Signal level indicator

During manual receive, the signal level indicator displays the signal level as shown below.

Weak (Unstable) Strong (Stable)

As you watch the indicator, keep the watch in a location that best maintains stable reception.

•Even under optimum reception conditions, it can take about 10 seconds for reception to stabilize.

•Note that weather, the time of day, surroundings, and other factors all can affect reception.

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

Inside or

Inside a

Near

Near a

Near

Among or

among

vehicle

household

construction

high-tension

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” below for details.

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

To check the latest signal reception results

Enter the Receive Mode.

• When receive is successful, the display shows the time and date that receive was successful. - : - - indicates that none of the reception operations were successful.

• To return to the Timekeeping Mode, press D.

Note

The receiving indicator will not be displayed if you have adjusted the time or date setting manually since the last receive operation.

Receiving indicator

To turn auto receive on and off

1. Enter the Receive Mode.

2. In the Receive Mode, hold down E until the current auto receive setting (On or OFF) and receiving indicator start to flash. This is the setting screen.

• Note that the setting screen will not appear if the currently selected Home City is one that does not support time calibration reception.

3. Press A to toggle auto receive on (On) and off (OFF).

Receiving

On/Off

4. Press E to exit the setting screen.

status

 

indicator

 

 

2