Operation Guide 5230

Receive successful

ξ If the receive operation is successful, the reception

 

date and time appear in the left digital dial. The watch

 

will return to the Timekeeping Mode if you press D or

 

if you do not perform any button operation for about

 

one or two minutes.

Receive failed

If there was a previously

successful reception

ξIf the current reception fails but a previous reception (within the last 24 hours) was successful, the right digital dial will show RCVD and ERR. If only ERR is displayed (without RCVD), 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 one or two minutes.

Note

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

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Signal Level Indicator

During manual receive, the lower digital dial shows a signal level indicator as shown below.

 

Weak

Strong

 

(Unstable)

(Stable)

Signal level indicator

As you watch the indicator, keep the watch in a location

that best maintains stable reception.

 

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

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

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To check the latest signal reception results

In the Timekeeping Mode, press D (page E-41).

ξ When receive is successful, the left digital dial shows the time and date that receive was successful. - : - - indicates that none of the receive operations were successful.

ξ To return to the Timekeeping Mode, press D.

Note

RCVD will not be displayed in the right digital dial if you have adjusted the time or date setting manually since the last receive operation.

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To turn auto receive on and off

4. Press A to exit the setting mode.

RCVD indicator

On/Off status

1.In the Timekeeping Mode, press D (page E-41).

2.Hold down A until the current auto receive setting (On or OFF) and RCVD indicator start to flash. This is the setting mode.

ξWhenever you enter the setting mode, the analog hands will automatically move to positions that allow easier viewing of the digital dials.

ξNote that the watch will not enter the setting mode if the currently selected Home City is one that does not support time calibration reception.

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

ξ Exiting a setting mode will normally cause the hands to return to regular

timekeeping automatically. However, if you manually move the hands (page

E-79) and then enter a setting mode, they will not return to regular timekeeping

automatically when you exit the setting mode. In this case, you will need to

return the hands to their normal positions manually (page E-80).

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 “Specifi cations” (page E-92).

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

−While power is at Level 3 (L) or lower (page E-15)

−While the watch is in the power recovery mode (page E-17)

−When the watch is in the function sleep state (“Power Saving”, page E-19)

−While a countdown timer operation is in progress (page E-60)

−While the hands are in positions to allow easier viewing of the digital dials (page E-79)

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

ξThe Home City setting reverts to the initial default of TYO (Tokyo) whenever the battery power level drops to Level 5 or when you have the rechargeable battery replaced. If this happens, change the Home City to the setting you want (page E-42).

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Mode Reference Guide

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

To do this:

Enter this mode:

See:

ξ View the current date in the Home City

 

 

ξ Confi gure Home City and daylight saving time (DST)

 

 

settings

 

 

ξ Confi gure time and date settings manually

Timekeeping Mode

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ξ Perform a time calibration receive operation

 

 

ξCheck whether the last receive operation was successful

ξSwitch between 12-hour and 24-hour timekeeping

ξDisplay an alarm countdown

View the current time in one of 48 cities (31 time zones)

World Time Mode

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around the globe

 

 

Use the stopwatch to measure elapsed time

Stopwatch Mode

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Use the countdown timer

Countdown Timer Mode

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Set an alarm time

Alarm Mode

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Selecting a Mode

ξThe illustration below shows which buttons you need to press to navigate between modes.

ξTo return to the Timekeeping Mode from any other mode, hold down C for at least four seconds.

Timekeeping Mode

World Time Mode

Stopwatch Mode

Countdown Timer Mode

Alarm Mode

C

C

 

C

C

 

 

 

C

 

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