Operation Guide 3347
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the digital 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 Fort Collins signal.
•The default DST setting is Auto DST (A
t
) whenever you select HNL, ANC, LAX, DEN, CHI, or NYC 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 A until the city code starts to flash, which indicates the setting screen.
2.Press C once and the DST setting screen appears.
3.Use D to cycle through the DST settings in the sequence shown below.
Auto DST (A t ) |
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| DST on (ON) |
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4. When the setting you want is selected, press A to exit the setting screen.
•The DST indicator ( 
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Analog Timekeeping
The analog time of this watch is synchronized with the digital time. The analog time setting is adjusted automatically whenever you change the digital time.
Note
•The hands for the analog timepiece move to adjust to a new setting whenever any of the following occurs.
When you change the digital time setting manually
When the digital time setting is changed by time calibration signal reception When you change the Home City code and/or DST setting
•If the analog time does not match the digital time for any reason, use the procedure described under “To adjust the analog time” to match the analog setting to the digital setting.
•Whenever you need to adjust both the digital and the analog time settings manually, make sure you adjust the digital setting first.
•Depending on how much the hands have to move in order to adjust to the digital time, it may take some time before they stop moving.
To adjust the analog time
Mode indicator 1. In the Timekeeping Mode, press C five times to enter the Hand Setting Mode.
2. Hold down A until the current digital time starts to flash, which indicates the setting screen.
3. Use D and B to adjust the analog setting as described below.
When you want to do this: | Perform this button operation: |
Move the hand setting | • Press D. |
forward 20 seconds |
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Move the hand setting a short | • Hold down D. |
way forward at high speed | • Release D when the hands reach the setting |
| you want. |
Move the hand setting a | • While holding down D to move the hands at |
long way forward at high | high speed, press B to lock the |
speed | hand movement. |
| • To stop the hand movement, press any |
| button. |
| • Hand movement stops automatically if the hour |
| hand makes one full |
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4. Press A to exit the setting screen.
•The minute hand will be adjusted slightly to match the seconds when you exit the setting screen.
•To return to the Timekeeping Mode, press C.
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
When turned on, the Power Saving function automatically puts the watch into a sleep state whenever it is left for a certain period in an area where it is dark. The table below shows how watch functions are affected by Power Saving.
Power saving indicator
Elapsed Time in Dark | Functions |
60 to 70 minutes | • LCD off |
| • Alarm, hourly time signal, analog timekeeping and |
| auto receive enabled |
6 or 7 days | • LCD off, alarm and hourly time signal disabled |
•Analog timekeeping stopped at 12 o’clock
•Auto receive 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 A until the city | ||||
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| 2. Press C nine times until the Power Saving on/off | |||
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| 3. Press D to toggle Power Saving on (ON) and off | |||||
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| • The Power Saving indicator ( | ) is on the display in | ||||
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On/Off |
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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 automatically returns to the Timekeeping Mode.
•If you leave the watch with a flashing setting on the display for two or three minutes without performing any operation, the watch automatically exits the setting screen.
Scrolling
The B and 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 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.
•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.
•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 automatically update the date and day of the week 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 | NYC (New York) |
DST (summer time) | (Auto switching) |
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Auto receive | (Auto receive) |
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 automatically displayed 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 
) appears on the display for times in the range of noon to 11:59 p.m. and no indicator appears for times in the range of midnight to 11:59 a.m.
•With the
Illumination Precautions
•Illumination may be hard to see when viewed under direct sunlight.
•Illumination automatically turns off whenever an alarm sounds.
•Frequent use of illumination runs down the batteries.
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