Operation Guide 3311 5052
Time Calibration Signal Reception
There are two different methods you can use to receive the time calibration signal: auto receive and manual receive.
•Auto Receive
With auto receive, the watch automatically picks up the time calibration signal five times a day at 0:00 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. For more information, see “About Auto Receive”.
•Manual Receive
Manual receive lets you start time calibration signal reception with the press of a button. For more information, see “To perform manual receive”.
Important!
•When getting ready to receive the time calibration signal, position the watch as shown in the nearby illustration, with its 12 o’clock side facing towards a window. This watch is designed to receive a time calibration signal late at night. Because of this, you should place the watch near a window as shown in the illustration when you take it off at night. Make sure there are no metal objects nearby.
Resin Band Metal Band
•Make sure the watch is facing the right way.
•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, or | power lines | mountains |
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| office | other sources |
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| equipment, | of electrical |
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| or a mobile | noise |
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| phone |
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•Signal reception is normally better at night than during the day.
•Time calibration signal reception takes from two to seven minutes. Take care that you do not perform any button operations or move the watch during this time.
•When within range of the applicable transmitter, this watch can receive either the U.S. (Fort Collins, Colorado) or Japanese (Fukushima or Fukuoka/Saga) time calibration signal. The signal the watch will attempt to pick up depends on its current Home City code setting as shown below.
Home City Code | Transmitter | Frequency | |
HNL*, ANC*, LAX, DEN, | Fort Collins, Colorado | 60kHz | |
CHI, NYC |
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TYO**, SEL*, HKG* | Fukushima | 40kHz | |
Fukuoka/Saga | 60kHz | ||
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•When auto receive is turned on, the watch receives the calibration signal for two to seven minutes everyday when the time in the Timekeeping Mode reaches each of the five calibration times. Do not perform any button operation within seven minutes before or after any of the five calibration times. Doing so can interfere with correct calibration.
•Remember that reception of the calibration signal depends on the time kept in the digital display. The reception will be performed whenever the display shows one of the five calibration times, regardless of whether or not the displayed time is actually the correct time.
•When two, three, four, or five receptions are successful, the watch uses the data of the last reception for calibration. When only one reception is successful, the watch uses the data of the successful reception.
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
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•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.
•Use the receiving indicator as a guide for checking signal strength and for finding the best location for the watch during signal reception.
•The Level 4 receiving indicator appears on the Timekeeping Mode’s Receiving Indicator and Seconds Count screen only.
The Level 4 receiving indicator is not displayed if signal reception was unsuccessful or after manual adjustment of the current time setting.
•The Level 4 receiving indicator indicates that at least one of the five calibration signal reception was successful. Note, however, that the Level 4 receiving indicator is cleared from the display at 3:00 a.m. each day.
To perform manual receive
1. Place the watch on a stable surface so its top (12 o’clock side) is facing towards a window.
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| 2. In the Timekeeping Mode, hold down Dfor about two |
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| 3. Release D and RC flashes to indicate that signal | ||
l | l | l | reception has started. | |
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| l | • When a reception starts, the second hand will move at |
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l | l | l | high speed to the 12 o’clock position where it will stop | |
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| until the reception is complete. |
• Time calibration signal reception normally takes from two to seven minutes. In Japan, however, reception can take up to 14 minutes. Take care that you do not perform any button operations or move the watch during this time.
• After signal reception is complete, the display of the watch changes to the last signal screen.
Note
•To interrupt a reception and return to the Timekeeping Mode, press D.
•If the reception is unsuccessful, the message ERR appears on the display for about one or two minutes. After that, the watch returns to the Timekeeping Mode.
•You can also change from the last signal or ERR screen to the normal timekeeping screen by pressing D.
To turn auto receive on and off
*The areas covered by the SEL, HKG, HNL, and ANC city codes are quite far from the time calibration signal transmitters, and so certain conditions may cause problems with signal reception.
**With TYO, you can specify either 40kHz or 60kHz.
500
600 miles2,000 miles kilometers500 kilometers
Fukuoka/Saga
Fukushima
1,000 kilometers
On/off status
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1. In the Timekeeping Mode, hold down Auntil the |
transmitter indicator starts to flash, which indicates the |
setting screen. |
• The second hand will move at high speed to the 12 |
o’clock position, where it will stop. |
2. Press C three times to move the flashing to the auto |
receive on/off setting. |
3. Press D to toggle auto receive on (ON) and off (OF). |
• If the current Home City setting is a city code that |
does not support auto receive, |
place of the on/off indicator. This means you cannot |
Fort Collins
1,000 kilometers
turn auto receive on or off. |
4. Press A twice to exit the setting screen. |
•Under good reception conditions, signal reception is possible within a radius of about 2,000 miles (3,000 kilometers) from the Fort Collins transmitter.
•At distances further than about 600 miles (1,000 kilometers) from the Fort Collins transmitter, signal reception may not be possible during certain times of year or times of day. Radio interferance may also cause problems with reception.
•At distances further than about 500 kilometers from the Fukushima and Fukuoka/ Saga transmitter, signal reception may not be possible during certain times of year or times of day. Radio interferance may also cause problems with reception.
•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
When auto receive is turned on, the watch automatically starts to receive the time calibration signal when the time in the Timekeeping Mode reaches 0:00 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. each day (calibration times). The watch will also perform an additional auto receive at 5:00 a.m. if none of the regularly scheduled auto receive are successful.
Note
•Auto receive is performed only if the watch is in the Timekeeping Mode or World Time Mode when one of the calibration times is reached. It is not performed if a calibration time is reached while an alarm is sounding, or while you are configuring settings (while settings are flashing on the display).
•When a reception starts, the second hand will move at high speed to the 12 o’clock position where it will stop until the reception is complete.
•Auto receipt 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 easily receive the signal.
•The second hand will advance at high speed to the correct position in accordance with the digital time seconds count, and resume normal movement from there.
•For information about city codes that support signal reception, see “To set your Home City”.
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 | • Enter the Timekeeping Mode |
manual receive. | Mode. | and try again. |
| • Your current Home City is not one of the | • Select HNL, ANC, LAX, |
| following city codes: HNL, ANC, | DEN, CHI, NYC, HKG, |
| LAX, DEN, CHI, NYC, HKG, | SEL, or TYO as your Home |
| SEL, or TYO. | City. |
Auto receive is | • You changed the time setting manually. | • Perform manual receive or |
turned on, but | • The watch was not in the Timekeeping | wait until the next auto |
the Level 4 | or World Time Mode, or you were | receive is performed. |
receiving | performing some button operation | • Check to make sure the watch |
indicator does | during the auto receive. | is in a location where it can |
not appear on | • Even if reception is successful, the | receive the signal. |
the Timekeeping | Level 4 receiving indicator disappears |
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Mode display. | every day at 3 a.m. |
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| • Time data (hour, minutes, seconds) only |
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| was received during the last reception. |
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| The Level 4 receiving indicator appears |
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| only when time data and date data |
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| (year, month, day) are both received. |
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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” and
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