Operation Guide 4343

Location

Reception is difficult and may even be impossible in the locations described below. Avoid such locations when performing signal reception.

•You should think of your watch as operating like a radio or TV when it is receiving the calibration signal.

Among or near buildings

Near high-voltage lines

Calibration Signal Reception Precautions

• Auto receive is disabled while the watch is in the Chronograph

Mode.

• Operating any button while auto receive is in progress will cause

the watch to beep and then exit the receive operation.

• Make sure you are within the range of a calibration signal

transmitter before performing the receive operation. Remember

that geographic contours, nearby buildings, the season, or the

time of day can make reception impossible even when you are

within range of the transmitter.

• Proper reception may be impossible if there is something blocking

the signal. If reception is unsuccessful, try again.

• This watch is designed to adjust its current time setting in

accordance with the calibration signal transmitted in Japan and

the United States only. Note that you will need to make your own

adjustments when using this watch outside of Japan or the United

States, or in any area that is outside the range of one of the

receivable time calibration signal transmitters.

• When the watch is unable to adjust its time using the calibration

signal for some reason, timekeeping accuracy is within ±20

Troubleshooting

1. The watch cannot receive the time calibration signal.

• Is there something in the immediate area that may be interfering

with reception?

Even if you are within the reception range of a transmitter, objects

between you and the transmitter or electrical noise can interfere

with reception. Avoid such areas during signal reception. See

“Location” for more information.

• Are you within the reception range of a transmitter?

See “Reception Ranges” for information about areas where the

watch can receive the signal.

• Do you have the correct Home City code selected?

Remember that auto receive is not performed unless TYO

(Tokyo), HKG (Hong Kong), NYC (New York), CHI (Chicago),

DEN (Denver), LAX (Los Angeles), ANC (Anchorage), or HNL

(Honolulu) is selected as the Home City. Select the correct Home

City code using the procedure under “Changing the Home City

Setting”.

• Is the signal being transmitted?

Though the time data of the Japanese calibration signal (Call

2.Time calibration signal reception is successful, but the hourly time signal and current time are slightly off.

•After the watch receives the time calibration signal, it performs an internal decoding process before updating its time setting. Because of this, the time setting may be off slightly (within one second).

3.Time calibration signal reception is successful, but the current time setting is wrong.

•Is the correct city code selected for your Home City? Select the correct Home City code using the procedure under “Changing the Home City Setting”.

Inside a vehicle

(automobile, train, plane, etc.)

In a location where there is radio interference (construction site, airport, etc.)

Next to a household appliance or office equipment (TV, speaker, fax, computer, cell phone, etc.)

Near mountains

seconds per month.

• Strong electrostatic charge can cause timekeeping error.

• Receive is cancelled if an alarm operation starts while it is being

performed.

• The watch’s calendar shows dates up to the year 2099.

Attempting a receive operation after that causes an error.

Sign: JJY) is maintained by the Japan Standard Time Group of

the National Institute of Information and Communications

Technology (NICT), it sometimes may be interrupted for periodic

maintenance work, or because of lightning or other problems.

If you are experiencing problems with reception, move away from the types of locations described above to a location with better reception, and try again.

Using the Chronograph

The chronograph performs 1/20-second elapsed time measurement up to 23 hours, 59 minutes, 59.95 seconds (24 hours). When the maximum limit is reached, the elapsed time returns to zero automatically and timing continues from there.

•In the Timekeeping Mode, press the Bbutton once to enter the Chronograph Mode.

Timekeeping Mode

Chronograph Mode

Indicator hand makes one revolution.

❚To start or stop an elapsed time
operation

Enter the Chronograph Mode to use the chronograph.

 

Second

• Reset

• Start

• Stop

 

 

Hour, Minute

30

30

Second hand

Second hand

counts seconds.

moves to “0”.

•To return to the Timekeeping Mode, press the Abutton while the chronograph is reset to zero.

30

1/20 second

Start

Stop

Reset

•1/20-second timing is performed for the first minute after you start or restart an elapsed time measurement operation. The 1/20- second hand also jumps to the elapsed time position when you stop an elapsed time measurement operation.

•Pressing the Abutton while an elapsed time measurement operation is in progress resets the chronograph to zero.

Cumulative Time Measurement

Pressing the Bbutton to restart the chronograph without resetting it to all zeros resumes elapsed time measurement from where it was last stopped.

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