Operation Guide 4723
•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 Rugby (England) 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 Time Zone, and whether standard time or Daylight Saving Time is selected for your Time Zone.
Note
•Auto receive is turned on whenever +0.0, +1.0, or +2.0 (+1.0, +2.0, or +3.0 while DST is turned on) is selected as the Home Time Zone.
Signal Reception Troubleshooting
Check the following points whenever you experience problems with signal reception.
Problem | Probable Cause | What you should do |
The | • You changed the time setting | • Perform manual signal |
stopwatch | manually. | receive or wait until the next |
second hand | • You performed some button operation | auto signal receive operation |
is pointing at | during the auto receive operation. | is performed. |
N (NO). | • Signal reception results are reset | • Check to make sure the |
| when the first auto receive | watch is in a location where it |
| operation of the day is performed. | can receive the signal. |
Time setting is | • The Home Time Zone setting is not | • Select the correct Home |
incorrect | correct for the area where you are | Time Zone. |
following signal | using the watch. |
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reception. |
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•For further information, see “Important!” under “Time Calibration Signal Reception” and
Stopwatch
Your Time Zone |
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| Auto Receive Start Times |
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1 | 2 | 3 | 4 | 5 | 6 | |||
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+ 0.0 | Standard Time | 1:00 am 2:00 am 3:00 am 4:00 am | 5:00 am | Midnight | ||||
(DST +1.0) |
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Daylight Saving | 2:00 am 3:00 am 4:00 am 5:00 am | Midnight | 1:00 am | |||||
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| Time |
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+ 1.0 | Standard Time | 2:00 am 3:00 am 4:00 am 5:00 am | Midnight | 1:00 am | ||||
(DST +2.0) |
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| Daylight Saving | 3:00 am 4:00 am 5:00 am Midnight | 1:00 am | 2:00 am | ||||
| Time |
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| next day | next day | |
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+ 2.0 | Standard Time | 3:00 am 4:00 am 5:00 am Midnight | 1:00 am | 2:00 am | ||||
(DST +3.0) |
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| next day | next day | |
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| Daylight Saving | 4:00 am 5:00 am Midnight 1:00 am | 2:00 am | 3:00 am | ||||
Stopwatch 1/20 second hand
*This hand rotates and indicates the second count during the first 60 seconds.
Second hand | Stopwatch | |
1/100 second | ||
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Stopwatch minute hand
The stopwatch lets you measure elapsed time,.
•The display range of the stopwatch is 59 minutes, 59.99 seconds.
•Entering the Stopwatch Mode causes the second hand, the stopwatch minute hand and stopwatch 1/20 second hand to move to the 12 o’clock position.
•The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.
•The stopwatch measurement operation continues even if you exit the Stopwatch Mode.
•All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing C.
Time | next day next day next day |
Note
• The auto receive operation is performed only if the watch is in the Timekeeping |
Mode or Dual Time Mode when a calibration time is reached. It is not performed if a |
calibration time is reached while an alarm is sounding or 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 |
To measure elapsed time
1.Press B to start the stopwatch.
2.Press B to stop the stopwatch.
•You can resume the measurement operation by pressing B again.
•The 1/20 second hand rotates during the first 60 seconds only, and then stops. When elapsed timing is stopped (by pressing B), this hand jumps to the 1/20 second indication (which is kept internally).
3.Check the elapsed time.
•Press Ato reset the stopwatch.
Dual Time
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. |
To perform manual receive
1. Place the watch on a stable surface so its 12 o’clock side is facing towards a window.
2. In the Timekeeping Mode, hold down Afor about two seconds until the watch beeps.
3. The stopwatch second hand will move to R (READY) to indicate that the watch is setting up for time calibration reception.
• The second hand will move to W (WORK) and stay there while actual reception is in progress.
Minus sign
GMT differential
The Dual Time Mode lets you view the current time in 29 time zones around the world.
•Time zones are indicated on the digital display by their GMT differential values.
•For full information on time zones, see the “Time Zone Table”.
•The watch will perform a signal receive operation even if it is in the Dual Time Mode when a calibration time is reached. If this happens, the Dual Time Mode time settings will be adjusted in accordance with the current time in the Timekeeping Mode’s Home Time Zone.
•All of the operations in this section are performed in the Dual Time Mode, which you enter by pressing C.
• The hour and minute hands continue to keep time normally.
• Time calibration signal reception takes from two to seven minutes, but in some cases it can take up to 14 minutes. Take care that you do not perform any button operations or move the watch during this time.
• If reception is successful, the second hand will move to Y (YES). One minute later, the hands will move to the correct time.
Note
•To interrupt a receive operation and return to the Timekeeping Mode, press any button.
•If reception is not successful, the stopwatch second hand will move to N (NO).
One minute later, the stopwatch second hand will resume normal operation, without any adjustment of the hand setting.
•If the stopwatch second hand is pointing to Y (YES) or N (NO), you can return to the Timekeeping Mode by pressing any button.
Viewing the Latest Signal Reception Results
You can use the Receive Result Mode to check if signal reception was performed correctly.
To check the latest signal reception results
1. In the Timekeeping Mode, press A.
• If the watch was able to perform a successful signal receive operation since midnight, the stopwatch second hand will move to Y (YES). If the watch has been unable to receive any signal successfully, the second hand will move to N (NO).
• The watch will return to the Timekeeping Mode after five seconds.
• The current receive result is cleared when the first auto receive operation is performed on the following day. This means Y (YES) indicates successful signal reception since the start of the current day.
•If you adjust the time or date setting manually, the second hand will move to N (NO).
To view the time in another time zone
While in the Dual Time Mode, press Bto scroll eastward through time zones.
•When you release B, the hands will move to the current time in that time zone after about one second.
•If the current time shown for a time zone is wrong, check the Timekeeping Mode time setting and your Home Time Zone setting, and make the necessary changes.
To toggle a time zone between Standard Time and Daylight Saving Time
| 1. In the Dual Time Mode, use Bto display the time zone |
| whose Standard Time/Daylight Saving Time setting you |
| want to change. |
| 2. Hold down Ato toggle between Daylight Saving Time |
llllllllll | (DST indicator displayed) and Standard Time (DST |
indicator not displayed). | |
l |
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ll lll |
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| • Turning on DST causes the GMT differential value to be |
| increased by one. |
| • The DST indicator appears on the display whenever you |
DST indicator | display a time zone for which Daylight Saving Time is |
| turned on. |
•The DST/Standard Time setting you configure affects only the currently displayed time zone. Other time zones are not affected.
• The 
(GMT: Greenwich Mean Time) time zone cannot be switched between Standard Time and Daylight Saving Time.
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