Operation Guide 2924
•See “City Code Table” for a complete list of available city codes.
•Auto DST (A) can be selected only while HNL, ANC, LAX, DEN, CHI, NYC, HKG, SEL, or TYO is selected as the Home City code. For more information, see “Daylight Saving Time (DST)” below.
•For information about setting other than the time and date, see the following. Power Saving: Power Saving Function
4.Press Ato exit the setting screen.
Daylight Saving Time (DST)
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 signal transmitted from Fort Collins includes 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 received time signal.
•The time calibration signals transmitted from Fukushima and Fukuoka/Saga do not include summer time data.
•The default DST setting is Auto DST (A) whenever you select LAX, DEN, CHI, NYC, or TYO as your Home City code.
•If you experience problems receiving the time calibration signal in your area, it is probably best to switch between Standard Time and Daylight Saving Time (summer time) manually.
To change the Daylight Saving Time (summer time) setting
1.In the Timekeeping Mode, hold down Auntil the city code starts to flash, which indicates the setting screen.
2.Press Cand the DST setting screen appears.
3.Use D to cycle through the DST settings in the sequence shown below.
Auto DST (A) |
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| DST off (OF) |
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| DST on (ON) |
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4. When the setting you want is selected, press Ato exit the setting screen.
•The DST indicator appears to indicate that Daylight Saving Time is turned 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.
Power Saving Function
Power saving | When turned on, the Power Saving function enters a sleep | |
indicator | state automatically whenever the watch is left in an area | |
| where it is dark for a certain period. The table below | |
| shows how watch functions are affected by the Power | |
| Saving function. |
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Elapsed Time | Display | Operation |
in Dark |
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60 to 70 minutes | Blank, with Power Saving | All functions enabled, except |
| indicator (PS) flashing | for the display |
6 or 7 days | Blank, with Power Saving | Beeper tone, backlight, and |
| indicator (PS) not flashing | 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 10:59 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 state
Perform any one of the following operations.
•Move the watch to a
•Press any button.
•Angle the watch towards your face for reading.
To turn Power Saving on and off
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| 1. In the Timekeeping Mode, hold down Auntil the city | |
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| 2. Press Cnine times until the Power Saving on/off | |
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| l | 3. Press Dto toggle Power Saving on (ON) and off (OF). | |
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On/Off status |
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Auto Return Features
•If you leave the watch in the Alarm Mode for two or three minutes without performing any operation, it returns to the Timekeeping Mode automatically.
•If you leave the watch with a flashing setting on the display for two or three minutes without performing any operation, the watch exits the setting screen automatically.
Scrolling
The B and D buttons are used in various modes and setting screens to scroll through data. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.
Initial Screens
When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.
Radio-controlled Atomic Timekeeping Precautions
•Strong electrostatic charge can result in the wrong time being set.
•The time calibration signal is bounced 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.
•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.
•Normally, the signal reception date shown by the Last Signal screen is the date data included in the received time calibration signal. When only time data is received, however, the Last Signal screen shows the date as kept in the Timekeeping Mode at the time of signal reception.
•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 following are the initial factory defaults for these settings.
Setting | Initial Factory Default |
City code | TYO (Tokyo) |
DST (summer time) DST
A(Auto switching)
Auto receive | (Auto receive) |
To configure auto receive settings for Japan
Note
•The following procedure applies when you have TYO (Tokyo) or SEL (Seoul) selected as your Home City. If you are using the watch in the U.S., see “To configure the auto receive setting for the U.S.”.
Japan auto |
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| 1. In the Timekeeping Mode, press D to display the last | |||||
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• Note that the setting screen will not appear if the currently selected Home City is one that does not support time calibration reception.
3. Use Dor Bto specify the transmitter selection mode you want to use.
• Each press of Dor B cycles through the available auto receive settings described below.
: Auto receive on. The watch automatically selects the transmitter whose signal is strongest. Signal reception can take up to 12 minutes when this option is selected.
: Auto receive on for reception of the Fukushima signal (40kHz).
: Auto receive on for reception of the Fukuoka/Saga signal (60kHz).
: Auto receive off.
4. Press Ato exit the setting screen.
•To return to the Timekeeping Mode from the last signal screen, press D.
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 day of the week is displayed automatically in accordance with the date (year, month, and day) settings.
•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 Greenwich Mean Time (GMT) differential for each city, based on your Home City time setting.
•GMT differential is calculated by this watch based on Universal Time Coordinated
(UTC*) data.
*UTC is the
12-hour/24-hour Timekeeping Formats
The
•With the
•With the
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.
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