Operation Guide 4723
Warning!
•Always make sure you are in a safe place whenever you are reading the face of watch using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not startle or distract others around you.
•When you are wearing the watch, make sure that its auto light switch is turned off before riding on a bicycle, or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In Timekeeping mode (except when a setting screen is on the display), hold down B for about three seconds to toggle the auto light switch on and off.
•Turning on the auto light switch will cause the watch to beep. The “ON” indicator will appear and the light will turn on for 1.5 seconds.
•Turning off the auto light switch will cause the watch to beep. The “OFF” indicator will appear for 1.5 seconds. The light will not turn on.
•In order to protect against running down the battery, the auto light switch automatically turns off approximately six hours after you turn it on.
Reference
This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.
Auto light switch precautions
•Wearing the watch on the inside of your wrist, movement of your arm, or vibration of your arm can cause frequent activation of the auto light switch and illuminate the face of the watch. To avoid running down the battery, turn off the auto light switch whenever engaging in activities that might cause frequent illumination of the face.
•Note that wearing the watch under your sleeve while the auto light switch is turned on can cause frequent illumination of the face and can run down the battery.
• Illumination may not turn on if the face of the watch is| More than 15 degrees | more than 15 degrees above or below parallel. Make | |
| too high | ||
| sure that the back of your hand is parallel to the ground. | ||
| ||
| • Illumination turns off after about 1.5 seconds, even if you | |
| keep the watch pointed towards your face. | |
| • Static electricity or magnetic force can interfere with | |
| proper operation of the auto light switch. If illumination | |
| does not turn on, try moving the watch back to the | |
| starting position (parallel with the ground) and then tilt it | |
| back towards your face again. If this does not work, drop | |
| your arm all the way down so it hangs at your side, and | |
| then bring it back up again. |
•Under certain conditions, illumination may not turn on until about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the auto light switch.
•You may notice a very faint clicking sound coming from the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light switch, and does not indicate a problem with the watch.
Auto Return Features
•If you leave the watch in the Alarm, or Hand Setting Mode for two or three minutes without performing any operation, it returns to the Timekeeping Mode automatically.
•If you do not perform any operation for about two or three minutes while a setting mode is selected, the watch will exit the setting mode automatically.
Scrolling
•Bis used to change the hand setting in various setting modes. In most cases, holding down this button will start
•
Radio-controlled Atomic Timekeeping Precautions
| • Strong electrostatic charge can result in the wrong time being set. |
• The time calibration signal bounces off the ionosphere. Because of this, such factors |
Tachymeter
Tachymeter bezel
|
| 60 TAC |
70 | 70 | HY |
6 | ||
|
| ME |
|
| T |
|
| E |
|
| R |
|
| 3 |
|
| 0 |
80 |
|
|
|
| 200 |
| 100 | 1 |
|
| 0 |
|
| 5 |
|
| 120 |
If your watch has a tachymeter bezel, you can perform the steps below to calculate average speed after using the Stopwatch Mode to measure the amount of time that it takes to travel one kilometer (or one mile).
•Never try to perform stopwatch operations while you are driving an automobile, riding a bicycle, or operating any type of vehicle. Doing so is very
dangerous and can result in accident.
1In the Stopwatch Mode, start an elapsed timeoperation at any point you like.2Stop the elapsed time operation after you travel onekilometer or one mile.3Your average speed will be the value that the second hand is pointing to on the tachymeter bezel.
| as changes in the reflectivity of the ionosphere, as well as movement of the |
ionosphere to higher altitudes due to seasonal atmospheric changes or the time of |
| day may change the reception range of the signal and make reception temporarily |
| impossible. |
• Even if the time calibration signal is received properly, certain conditions can cause |
| the time setting to be off by up to one second. |
• The current time setting in accordance with the time calibration signal takes priority |
| over any time settings you make manually. |
• The watch is designed to update the date and day of the week automatically for the |
| period January 1, 2001 to December 31, 2099. Setting of the date by the time |
| calibration signal cannot be performed starting from January 1, 2100. |
• This watch can receive signals that differentiate between leap years and |
| years. |
• Though this watch is designed to receive both time data (hour, minutes, seconds) |
and date data (year, month, day), certain signal conditions can limit reception to time |
| data only. |
• If you are in an area where proper time calibration signal reception is impossible, the |
| watch keeps time within ±20 seconds a month at normal temperature. |
• If you have problems with proper time calibration signal reception or if the time |
| setting is wrong after signal reception, check your current time zone, and DST |
| (summer time). |
Transmitters
This watch is designed to receive the time calibration signal transmitted from Mainflingen, Germany and the signal from Rugby, England. You can configure the watch to automatically select the transmitter that has the strongest signal.
In this case: | The watch does this: |
| The first signal auto search operation | 1. Checks the Mainflingen signal first. |
| after factory default settings are in effect, | 2. If the Mainflingen signal cannot be |
| or after the time zone has been changed | received, checks the Rugby signal. |
| Any case other than the above. | 1. Checks the last successfully received |
| signal first. |
| 2. If the last successfully received signal |
| cannot be received, checks the other |
| signal. |
|
|
Timekeeping
•The year can be set in the range of 2001 to 2099.•The watch’s
•The date will change automatically when the current time reaches midnight. The date change at the end of the month may take more time than normal.
•The current time for all time zones in the Timekeeping Mode and Dual Time Mode is calculated in accordance with the Greenwich Mean Time (GMT) differential of each zone, based on your Home Time Zone time setting.
•GMT differential is calculated by this watch based on Universal Time Coordinated (UTC*) data.
*UTC is the
Illumination Precautions
•The illumination provided by the light may be hard to see when viewed under direct sunlight.
•Illumination automatically turns off whenever an alarm sounds.•Frequent use of illumination shortens the battery operating time.•The illustration shows an example where it took 50 seconds to travel one kilometer by car. The second hand is pointing at 70, which indicates that the average speed is 70 kilometers per hour.
•See “Stopwatch” for details about using the stopwatch.•The tachymeter can be used only when you are traveling by car or some other means that can cover one kilometer or one mile within 60 seconds.
Time Zone Table
GMT Differential Value | Major Cities in Time Zone | ||
Standard Time | DST/Summer Time |
| |
| DST | Pago Pago | ||
DST | Honolulu, Papeete | ||
DST | Anchorage, Nome | ||
DST | Los Angeles, San Francisco, Las Vegas, Vancouver, | ||
|
|
| Seattle/Tacoma, Dawson City, Tijuana |
DST | Denver, El Paso, Edmonton, Culiacan | ||
DST | Chicago, Houston, Dallas/Fort Worth, New Orleans, | ||
|
|
| Mexico City, Winnipeg |
DST | New York, Montreal, Detroit, Miami, Boston, | ||
|
|
| Panama City, Havana, Lima, Bogota |
DST | Caracas, La Paz, Santiago, Port of Spain | ||
DST | Rio De Janeiro, Sao Paulo, Buenos Aires, Brasilia, | ||
|
|
| Montevideo |
DST |
| ||
DST | +0.0 | Praia | |
G 0.0 | G 0.0 | (GMT) | |
+0.0 | DST | +1.0 | London, Dublin, Lisbon, Casablanca, Dakar, Abidjan |
+1.0 | DST | +2.0 | Paris, Milan, Rome, Madrid, Amsterdam, Algiers, |
|
|
| Hamburg, Frankfurt, Vienna, Stockholm, Berlin |
+2.0 | DST | +3.0 | Cairo, Jerusalem, Athens, Helsinki, Istanbul, Beirut, |
|
|
| Damascus, Cape Town |
+3.0 | DST | +4.0 | Jeddah, Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, |
|
|
| Moscow |
| +3.5 | DST | +4.5 | Tehran, Shiraz |
+4.0 | DST | +5.0 | Dubai, Abu Dhabi, Muscat |
+4.5 | DST | +5.5 | Kabul |
+5.0 | DST | +6.0 | Karachi, Male |
+5.5 | DST | +6.5 | Delhi, Mumbai, Kolkata |
+6.0 | DST | +7.0 | Dhaka, Colombo |
+6.5 | DST | +7.5 | Yangon |
+7.0 | DST | +8.0 | Bangkok, Jakarta, Phnom Penh, Hanoi, Vientiane |
+8.0 | DST | +9.0 | Hong Kong, Singapore, Kuala Lumpur, Beijing, Taipei, |
|
|
| Manila, Perth, Ulaanbaatar |
+9.0 | DST +10.0 | Tokyo, Seoul, Pyongyang | |
| +9.5 | DST | +10.5 | Adelaide, Darwin |
| +10.0 | DST +11.0 | Sydney, Melbourne, Guam, Rabaul | |
| +11.0 | DST +12.0 | Noumea, Port Vila | |
| +12.0 | DST | +13.0 | Wellington, Christchurch, Nadi, Nauru Island |
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