Operation Guide 4739
•Proper signal reception can be difficult or even impossible under the conditions listed below.
Inside or | Inside a | Near | Near a | Near high- | Among or |
among | vehicle | household | construction | tension | behind |
buildings |
| appliances, | site, airport, | power lines | mountains |
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| office | or other |
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| equipment, | sources of |
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| or a mobile | electrical |
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| phone | noise |
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•Signal reception normally is better at night than during the day.
•Time calibration signal reception 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 operations or move the watch during this time.
•The time calibration signal the watch will attempt to pick up depends on its current Home City code setting as shown below. If you use the watch in Japan or Europe (each of which has two different transmitter locations), it will try to receive the time calibration signal from one of the transmitters in your current location. If it cannot receive the signal, it will then try to receive the time calibration signal from the other transmitter.
Home City Codes and Transmitters
Home City Code | Transmitter | Frequency | |
LIS, LON, | Anthorn (England) | 60.0 kHz | |
MAD, PAR, ROM, BER, | 77.5 kHz | ||
Mainflingen (Germany) | |||
STO, ATH, MOW* |
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HKG*, BJS*, TPE, | Fukushima (Japan) | 40.0 kHz | |
SEL, TYO | Fukuoka/Saga (Japan) | 60.0 kHz | |
HNL*, ANC*, YVR, |
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LAX,YEA, DEN, MEX, | Fort Collins, Colorado | 60.0 kHz | |
YWG, CHI, MIA,YTO, | (the United States) | ||
NYC, YHZ,YYT |
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*The areas covered by the MOW, HKG, BJS, HNL, and ANC city codes are quite far from the time calibration signal transmitters, and so certain conditions may cause problems with signal reception.
Approximate Reception Ranges
UK and German Signals | North American Signal | |
Anthorn |
| 2,000 miles |
500 kilometers |
| (3,000 kilometers) |
| 600 miles | |
1,500 kilometers |
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| (1,000 kilometers) | |
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The Anthorn signal | Mainflingen | Fort Collins |
is receivable within this area |
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| Japanese Signals | |
| 500 kilometers |
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| Fukushima |
| Fukuoka/Saga |
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Signals are receivable in the Taiwan area | 1,000 kilometers | |
when reception conditions are good. | ||
•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)
Fukushima or Fukuoka/Saga (Japan) transmitters: 500 kilometers (310 miles)
•Even when the watch is within the reception range of the transmitter, signal reception will be impossible if the signal is blocked by mountains or other geological formations between the watch and signal source.
•Signal reception is affected by weather, atmospheric conditions, and seasonal changes.
•See the information under “Signal Reception Troubleshooting” if you experience problems with time calibration signal reception.
About Auto Receive
The watch receives the time calibration signal automatically up to six times a day. When any auto receive is successful, the remaining auto receive operations are not performed. The reception schedule (calibration times) depends on your currently selected Home City, and whether standard time or Daylight Saving Time is selected for your Home City.
Your Home City |
| Auto Receive Start Times |
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| 1 | 2 | 3 | 4 | 5 | 6 |
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LIS, LON | Standard Time | 1:00 am | 2:00 am | 3:00 am | 4:00 am | 5:00 am | Midnight | |
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| next day | |
| Daylight | 2:00 am | 3:00 am | 4:00 am | 5:00 am | Midnight | 1:00 am | |
| Saving Time |
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| next day | next day | |
MAD, PAR, ROM, | Standard Time | 2:00 am | 3:00 am | 4:00 am | 5:00 am | Midnight | 1:00 am | |
BER, STO |
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| next day | next day | |
| Daylight | 3:00 am | 4:00 am | 5:00 am | Midnight | 1:00 am | 2:00 am | |
| Saving Time |
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| next day | next day | next day | |
ATH | Standard Time | 3:00 am | 4:00 am | 5:00 am | Midnight | 1:00 am | 2:00 am |
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| next day | next day | next day | |
| Daylight | 4:00 am | 5:00 am | Midnight | 1:00 am | 2:00 am | 3:00 am | |
| Saving Time |
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| next day | next day | next day | next day | |
MOW | Standard Time | 4:00 am | 5:00 am | Midnight | 1:00 am | 2:00 am | 3:00 am | |
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| next day | next day | next day | next day | |
| Daylight | 5:00 am | Midnight | 1:00 am | 2:00 am | 3:00 am | 4:00 am | |
| Saving Time |
| next day | next day | next day | next day | next day | |
HKG, BJS, TPE, | Standard Time | Midnight | 1:00 am | 2:00 am | 3:00 am | 4:00 am | 5:00 am | |
SEL, TYO |
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HNL, ANC, YVR, | Standard Time |
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LAX,YEA, DEN, | Daylight | Midnight | 1:00 am | 2:00 am | 3:00 am | 4:00 am | 5:00 am | |
MEX,YWG, CHI, | Saving Time | |||||||
MIA,YTO, NYC, |
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YHZ, YYT |
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Note
•When a calibration time is reached, the watch will receive the calibration signal only if it is in either the Timekeeping Mode or World Time Mode. Reception is not performed if a calibration time is reached while you are configuring settings.
•Auto receive of the calibration signal is designed to be performed early in the morning, while you sleep (provided that the Timekeeping Mode time is set correctly). Before going to bed for the night, remove the watch from your wrist, and put it in a location where it can receive the signal easily.
•The watch receives the calibration signal for two to 14 minutes everyday when the time in the Timekeeping Mode reaches each of the calibration times. Avoid performing any button operation within 14 minutes before or after any one of the calibration times. Doing so can interfere with correct calibration.
•Remember that reception of the calibration signal depends on the current time in the Timekeeping Mode. The receive operation will be performed whenever the display shows any one of the calibration times, regardless of whether or not the displayed time actually is the correct time.
•Calibration signal reception is disabled while a countdown timer operation is in progress.
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received. For best reception, be sure to keep the watch in a location where signal strength is strongest.
Receiving indicator
Weak | Strong |
(Level 0) | (Level 3) |
•Use the receiving indicator as a guide for checking signal strength and for finding the best location for the watch during signal receive operations.
•Even in an area where signal strength is strong, it takes about 10 seconds for signal reception to stabilize enough for the receiving indicator to indicate signal strength.
To perform manual receive
Receiving1. Enter the Timekeeping Mode.
2. Place the watch on a stable surface so its 12 o’clock side is facing towards a window.
3.Hold down D for about two seconds until the receiving indicator appears on the display.
• Time calibration signal reception takes from two to 14 minutes. Take care that you do not perform any button operations or move the watch during this time.
| • If the receive operation is successful, the reception date | |
Receive successful | and time appear on the display, along with the GET | |
indicator. | ||
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| The watch will enter the Timekeeping Mode if you press | |
| D or if you do not perform any button operation for | |
| about one or two minutes. |
Receive date
Receive time
•If the current reception fails, the display shows the ERR
indicator.
The watch will enter the Timekeeping Mode without changing the time setting if you press Dor if you do not perform any button operation for about one or two minutes.
To turn auto receive on and off
1. In the Timekeeping Mode, press Dto display the Last Signal screen.
ll | l |
| 2. Hold down Auntil the current auto receive setting (ON | |||
l | or OFF) start to flash. This is the setting screen. | |||||
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| • Note that the setting screen will not appear if the | ||
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| l | currently selected Home City is one that does not | |
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| support time calibration reception. | ||
l | ll l |
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l | 3. Press Dto toggle auto receive on (ON) and off (OFF). | |||||
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4. Press A to exit the setting screen.
•For information about city codes that support signal receive, see “To specify your Home City”.
To check the latest signal reception results
In the Timekeeping Mode, press Dto display the Last
Signal screen.
•When receive is successful, the display shows the time and date that receive was successful. -
•To return to the Timekeeping Mode, press D.
Receive time
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem | Probable Cause | What you should do |
Cannot perform | • The watch is not in the Timekeeping Mode. | • Enter the Timekeeping Mode |
manual receive. | • Your current Home City is not one of the | and try again. |
| following: | • Select LIS, LON, MAD, PAR, |
| LIS, LON, MAD, PAR, ROM, BER, STO, | ROM, BER, STO, ATH, MOW, |
| ATH, MOW, HKG, BJS, TPE, SEL, TYO, | HKG, BJS, TPE, SEL, TYO, |
| HNL, ANC, YVR, LAX, YEA, DEN, MEX, | HNL, ANC,YVR, LAX, YEA, |
| YWG, CHI, MIA, YTO, NYC, YHZ, or | DEN, MEX, YWG, CHI, MIA, |
| YYT | YTO, NYC, YHZ, or YYT as |
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| your Home City. |
Time setting is | • If the time is one hour off, the DST | • Change the DST setting to |
incorrect | setting may be incorrect. | Auto DST. |
following signal | • The Home City code setting is not | • Select the correct Home City |
reception. | correct for the area where you are using | code. |
| the watch. |
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•For further information, see “Important!” under “Time Calibration Signal Reception”
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