12 o’clock
or

Operation Guide 5142

To get ready for a receive operation

1.Confi rm that the watch is in the Timekeeping Mode. If it isn’t, push in and hold the crown for at least two seconds to enter the Timekeeping Mode.

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

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

pointed towards a window. 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.

ξSignal 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

 

 

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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” on page E-32 for details.

ξManual Receive: Perform the operation under “To perform manual receive” on page E-33.

Auto Receive

ξWith 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.

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

To perform manual receive

1.In the Timekeeping Mode (page E-44), keep Bdepressed (for about two seconds) as the x Second Hand goes through the following sequence.

ξMoves to Y (or YES for some models) or N (NO) to indicate the last signal reception result, then to R (READY).

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

When the x Second Hand is

It means this:

pointed here:

 

R (READY)

Watch is setting up for reception.

Note

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

To check the result of the latest receive operation

W (WORK)

Reception is in progress.



Reception was completed

Y (YES)

successfully.

 

N (NO)

Reception failed for some reason.

ξIf signal reception is unstable, the x Second Hand may move between W (WORK) and R (READY).

ξWhen the receive operation is successful, the watch adjusts the time setting accordingly, and then resumes normal timekeeping. It does not adjust the setting if the operation failed.





In the Timekeeping Mode, press B.

ξThe x Second Hand will move to Y (YES) for about one second if the latest receive operation was successful, or N (NO) if it was not. After that, regular timekeeping will resume.

ξYou can return to the Timekeeping Mode manually by pressing Bwhile the x Second Hand is pointing to Y (YES) or N (NO).

Note

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

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Radio-controlled Atomic Timekeeping Precautions

ξStrong electrostatic charge can result in the wrong time setting.

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

ξThe 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.

ξIf you are in an area where signal reception is not possible, the watch keeps time with the precision noted in “Specifications” (page E-105).

ξThe receive operation is disabled under any of the following conditions.

−While power is at Level 2 or lower (page E-18)

−While the watch is in the power recovery mode (page E-20)

−While the watch is in the function sleep state (power saving, page E-22)

−While a countdown time operation is in progress (page E-73)

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

Mode Reference Guide

Your watch has six “modes”. The mode you should select depends on what you want to do.

To do this:

Enter this mode:

See:

ξ View the current time in your Home City and in one of

 

 

29 other cities around the globe

 

 

ξ View the current date in the Home City

 

 

ξ Configure Home City and daylight saving time (DST)

Timekeeping Mode

E-44

settings

 

 

ξ Perform a time calibration receive operation

 

 

ξ Configure time and date settings manually

 

 

Measure elapsed time and split times

Stopwatch Split Mode

E-63

(split measurement)

 

 

Measure elapsed time and lap times, and recall lap

Stopwatch Lap Mode

E-69

times

(lap measurement)

 

Use the countdown timer

Countdown Timer Mode

E-73

 

 

 

E-36

E-37

 

 

To do this:

Enter this mode:

See:

Set an alarm time

Alarm Mode

E-78

 

 

 

View the current time in one of 29 cities around the

World Time Mode

E-83

globe

 

 

Mode Disk Pointers

The v Mode Disk uses three different pointers to indicate a variety of different information: a mode pointer, a split pointer, and a lap pointer.

Mode Pointer

The mode pointer is in a fi xed position. Whenever you enter a mode, the v Mode Disk will rotate until the current mode indicator (AL, TR, ST, TM, or WT) is aligned with the mode pointer. The mode pointer is also used for indication of standard time (STD or STD-AT) and daylight saving time (DST or DST-AT).

Split Pointer

The split pointer is marked on the v Mode Disk. Whenever you enter the Stopwatch Split Mode (page E-63), it indicates the current status of the stopwatch operation. While a normal stopwatch elapsed time measurement operation is in progress, the split pointer will point to RUN. When a split time is indicated by the hands (which are temporarily stopped), the split pointer will point to SPL. Stopping the elapsed time measurement operation will cause the split pointer to move to STP (stop).

Lap Pointer

The lap pointer is marked on the v Mode Disk. Whenever you press Bto perform lap time measurement in the Stopwatch Mode, the v Mode Disk will rotate so the lap pointer points at the current lap number (1 through 5). If the current lap number is greater than 5, the lap pointer will point at .

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