Operation Guide 3155
Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.
The time calibration signals transmitted from Mainflingen (Germany), Anthorn (England), or Fort Collins (the United States) include both Standard Time and DST data. When the Auto DST setting is turned on, the watch switches between Standard Time and DST (summer time) automatically in accordance with the signals.
•Though the time calibration signal transmitted by the Fukushima and Fukuoka/Saga, Japan transmitters include summer time data, summer time currently is not implemented in Japan (as of 2007).
•The default DST setting is Auto DST (AvtA) whenever you select LIS, LON,
MAD, PAR, ROM, BER, STO, ATH, MOW, TYO, ANC, YVR, LAX, YEA,
DEN, MEX, CHI, MIA, YTO, NYC, YHZ, or YYT as your Home City code.
•If you experience problems receiving the time calibration signal in your area, it probably is best to switch between Standard Time and Daylight Saving Time (summer time) manually.
To change the Daylight Saving Time (summer time) settingll l lll |
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| 2. Press Cand the DST setting screen appears. | |||||||||
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| Auto DST (AvtA) |
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| DST off (OFF) |
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| DST on (ON) |
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•If you change your Home City to one that is within the same transmitter area, the current DST setting will be retained. If you change to a city that is outside your current transmitter area, DST will be turned off automatically.
Transmitter area city codes
•TYO, TPE, and SEL
•HKG, BJS
•HNL, ANC, LAX, DEN, CHI, NYC, YVR, YEA, MEX, MIA, YTO, YHZ, and YYT
•LON, PAR, BER, ATH, LIS, MAD, ROM, STO, and MOW
•All other city codes
4.When the setting you want is selected, press A to exit the setting screen.
•The DST indicator appears to indicate that Daylight Saving Time is turned on.
ReferenceThis 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.
Graphic AreaThe information shown in the graphic area depends on the current mode.
Graphic Area | Mode | Graphic Area | |
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| Timekeeping Mode | Timekeeping Mode seconds |
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| Rally Mode | Target time number/Measurement time |
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| 1/10 seconds during measurement |
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| Recall Mode | Record number |
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| World Time Mode | Timekeeping Mode seconds |
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| Alarm Mode | No indication |
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| Stopwatch Mode | Stopwatch Mode 1/10 seconds |
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| CountdownTimer Mode | CountdownTimer Mode seconds |
The button operation tone sounds any time you press one of the watch’s buttons. You can turn the button operation tone on or off as desired.
•Even if you turn off the button operation tone, the alarms, the Hourly Time Signal, the countdown alarm, and Rally Mode auto start all operate normally.
To turn the button operation tone on and offIn any mode (except when a setting screen is on the display), hold down C to toggle the button operation tone on ( not displayed) and off ( displayed).
•Holding down C to turn the button operation tone on or off also causes the watch’s current mode to change.
• The indicator is displayed in all modes when the button operation tone is turned off.
Power Saving FunctionPower saving indicator | When turned on, the Power Saving function enters a sleep | ||||
state automatically whenever the watch is left in an area | |||||
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Elapsed Time in |
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60 to 70 minutes | Blank, with Power Saving | All functions enabled, except for the | |||
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6 or 7 days | Blank, with Power Saving | Auto receive, beeper tone, | |||
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| indicator (PS) not flashing | illumination, and display are disabled. |
•Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
•The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If the watch is already in the sleep state when 6:00 AM arrives, however, it will remain in the sleep state.
To recover from the sleep statePerform any one of the following operations.
• Move the watch to a
• Press any button.
• Angle the watch towards your face for reading.
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| l | 1. In the Timekeeping Mode, hold down Auntil the city | |
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| ll | l | 2. Press C nine times until the Power Saving on/off | |
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| 3. Press D to toggle Power Saving on ( ) and off | |
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| • The Power Saving indicator (PS) is on the display in all |
modes while Power Saving is turned on.
•Strong electrostatic charge can result in the wrong time being set.
•The time calibration signal bounces off the ionosphere. Because of this, such factors 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, 2000 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
•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 ±15 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 city code, DST (summer time), and auto receive settings.
•The Home City setting reverts to the initial default of TYO (Tokyo) whenever the battery power level drops to Level 5 or when you have the rechargeable battery replaced. If this happens, change the Home City to the setting you want.
TransmittersThe time calibration signal received by this watch depends on the currently selected Home City code.
•When a U.S. time zone is selected, the watch receives the time calibration signal transmitted from the United States (Fort Collins).
•When a Japanese time zone is selected, the watch receives the time calibration signal transmitted from Japan (Fukushima and Fukuoka/Saga).
•When a European time zone is selected, the watch receives the time calibration signals transmitted from Germany (Mainflingen) and England (Anthorn).
•When a China time zone is selected, the watch receives the time calibration signals transmitted from China (Shangqiu City).
•When your Home City is LIS, LON, MAD, PAR, ROM, BER, STO, ATH, MOW (which can receive both the Anthorn and Mainflingen signals), the watch first tries to pick up the signal it last successfully received. If that fails, it tries the other signal. For the first receive after you select your Home City, the watch tries the nearest signal first (Anthorn for LIS, LON, Mainflingen for MAD, PAR, ROM, BER, STO, ATH, and MOW).
Auto Return Features•If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch exits the setting screen automatically.
ScrollingThe Band D buttons are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls at high speed.
Initial ScreensWhen you enter the Rally Mode, Recall Mode, World Time Mode, or Alarm Mode, the data you were viewing when you last exited the mode appears first.
Timekeeping•Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes.
•The year can be set in the range of 2000 to 2099.
•The watch’s
•The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in accordance with the Coordinated Universal Time (UTC) for each city, based on your Home City time setting.
World Time•The seconds count of the World Time is synchronized with the seconds count of the Timekeeping Mode.
Illumination Precautions•The
•Illumination may be hard to see when viewed under direct sunlight.
•The watch may emit an audible sound whenever the display is illuminated. This is due to vibration of the EL panel used for illumination, and does not indicate malfunction.
•Illumination turns off automatically whenever an alarm sounds.
•Frequent use of illumination runs down the battery.
Auto light switch precautions•Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light switch to operate when it is not needed, which shortens battery life. If you want to wear the watch on the inside of your wrist, turn off the auto light switch feature.
More than 15 degrees | • Illumination may not turn on if the face of the watch is |
too high | more than 15 degrees above or below parallel. Make |
| sure that the back of your hand is parallel to the ground. |
| • Illumination turns off after a preset amount of time (1.5 |
| or 3 seconds), even if you keep the watch pointed |
| towards your face. |
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