Operation Guide 4350
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving the watch in the areas described below whenever charging its rechargeable battery.
Warning!Leaving the watch in bright light to charge its rechargeable battery can cause it to become quite hot. Take care when handling the watch to avoid burn injury. The watch can become particularly hot when exposed to the following conditions for long periods.
•On the dashboard of a car parked in direct sunlight
•Too close to an incandescent lamp
•Under direct sunlight
Charging Guide
After a full charge, timekeeping remains enabled for up to about four months.
•The following table shows the amount of time the watch needs to be exposed to light each day in order to generate enough power for normal daily operations.
| Exposure Level (Brightness) | Approximate Exposure Time |
|
|
Outdoor sunlight (50,000 lux) | 6 minutes |
|
|
Sunlight through a window (10,000 lux) | 30 minutes |
|
|
Daylight through a window on a cloudy day (5,000 | 48 minutes |
lux) |
|
|
|
Indoor fluorescent lighting (500 lux) | 8 hours |
|
|
•Since these are the specs, we can include all the technical details.
•Watch is not exposed to light
•Internal timekeeping
•Analog hands operational 18 hours per day, sleep state 6 hours per day
•10 seconds of alarm operation per day
•1 time calibration reception per day
•Stable operation is promoted by frequent charging.
Recovery TimesThe table below shows the amount exposure that is required to take the battery from one level to the next.
| Exposure Level | Approximate Exposure Time |
| |||
| (Brightness) |
|
|
|
|
|
| Level 3 |
| Level 2 |
| Level 1 | |
|
|
| |||
| ▲ |
| ▲ |
| ▲ |
Outdoor sunlight (50,000 lux) | 1 hour |
|
| 21 hours | |
Sunlight through a window | 2 hours |
|
| 77 hours | |
(10,000 lux) |
|
| |||
|
|
|
|
| |
Daylight through a window on | 4 hours |
|
| – – – | |
a cloudy day (5,000 lux) |
|
| |||
|
|
|
|
| |
Indoor fluorescent lighting | 35 hours |
|
| – – – | |
(500 lux) |
|
| |||
|
|
|
|
| |
•The above exposure time values are all for reference only. Actual required exposure times depend on lighting conditions.
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 Return Features
•If you leave the watch in the Home Position Adjustment 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
•The D and Bbutton are used to change the hand setting in various setting modes. In most cases, holding down these buttons will start
•
-One complete cycle for the hands is one revolution (360 degrees) or 24 hours.
-One complete cycle for the day is 31 days.
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 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
•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.
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 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
Power Saving
Power Saving enters a sleep state automatically whenever the watch 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.
•There are actually two sleep state levels: “second hand sleep” and “function sleep”.
| Elapsed Time in Dark | Operation |
|
|
60 to 70 minutes | Second hand only is stopped, all other functions are |
(second hand sleep) | enabled. |
|
|
6 or 7 days | • All functions, including analog timekeeping, disabled |
(function sleep) | • Internal timekeeping maintained |
|
|
•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.
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