Operation Guide 5007

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Setting the month

9.Use D to move the stopwatch second hand to the month setting you want.

10.After the month setting is the way you want, press C.

•This will cause the watch to beep and change to the date setting mode.

11.Use D(+) and B(–) to change the date setting.

•Pressing C will return to the time setting mode. 12.After all the settings are the way you want, press A to

return to the Timekeeping Mode.

•Pressing A any time during the above procedure will return to the Timekeeping Mode, where the timekeeping second hand will resume timekeeping from second 0.

•The day of the week is displayed automatically in accordance with the date (year, month, and day) settings.

Charging Guide

After a full charge, timekeeping remains enabled for up to about five 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)

8 minutes

 

 

Sunlight through a window (10,000 lux)

30 minutes

 

 

Daylight through a window on a cloudy day

48 minutes

(5,000 lux)

 

 

 

Indoor fluorescent lighting (500 lux)

8 hours

 

 

• For details about the battery operating time and daily operating conditions, see the

“Power Supply” section of the Specifications.

Date

Setting the date

Power Supply

This watch is equipped with a solar cell and a special rechargeable battery (secondary battery) that is charged by the electrical power produced by the solar cell. The illustration shown below shows how you should position the watch for charging.

Example: Orient the watch so its face is

Solar cell

pointing at a light source.

 

• The illustration shows how to position

 

a watch with a resin band.

 

• Note that charging efficiency drops

 

when any part of the solar cell is

 

blocked by clothing, etc.

 

• You should try to keep the watch

 

outside of your sleeve as much as

 

possible. Even if the face of the watch

 

is blocked from light only partially,

 

charging will be reduced significantly.

 

Important!

•Storing the watch for long periods in an area where there is no light or wearing it in such a way that it is blocked from exposure to light can cause rechargeable battery power to run down. Make sure that the watch is exposed to bright light whenever possible.

•This watch uses a special rechargeable battery to store power produced by the solar cell, so regular battery replacement is not required. However, after very long use, the rechargeable battery may lose its ability to achieve a full charge. If you experience problems getting the special rechargeable battery to charge fully, contact your dealer or CASIO distributor about having it replaced.

•The special rechargeable (secondary) battery used by your watch is not intended to be removed or replaced by you. Use of a rechargeable battery other than the special one specified for this watch can damage the watch.

•The current time and all other settings return to their initial factory defaults whenever battery power drops to Level 3 and when you have the battery replaced.

•Keep the watch in an area normally exposed to bright light when storing it for long periods. This helps to keep the rechargeable battery from going dead.

Battery Power Levels

The movement of the analog hands indicates the current battery power level.

Level

Hand Movement

Function Status

 

 

 

1

Normal.

All functions enabled.

 

 

 

2

• Second hand jumps

Beeper and time

 

every 2 seconds.

calibration signal

 

• Date changes to home

reception disabled.

 

position.

 

 

 

 

3

• Second hand stopped.

All functions disabled.

 

• Hour and minute hands

 

 

stopped at 12 o’clock.

 

Jumps two seconds

•The second hand jumping every two seconds (Level 2) indicates that battery power is quite low. Expose the watch to light as soon as possible to charge the battery.

•When battery power is at Level 2, time calibration signal reception is disabled.

•At Level 3, all functions are disabled and settings return to their initial factory defaults. The watch will continue to keep time internally for about one month after the battery drops to Level 3. If you recharge the battery sufficiently during this period, the analog hands will move automatically to the correct setting and normal timekeeping will resume.

•Alarm operation can cause hand movement to stop due to a sudden temporary drop in battery power. This does not indicate malfunction, and normal operation will resume when the watch is exposed to light. Though hand movement stops, timekeeping continues internally, and the hands will be adjusted to the correct setting when normal operation returns.

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

• Stable operation is promoted by frequent charging.

Recovery Times

The 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

 

20 hours

 

Sunlight through a window

2 hours

 

73 hours

 

(10,000 lux)

 

 

 

 

 

 

 

 

Daylight through a window on

4 hours

 

– – –

 

a cloudy day (5,000 lux)

 

 

 

 

 

 

 

 

Indoor fluorescent lighting

34 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 Alarm Mode or 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.

High-Speed Movement

•The D and Bbuttons are used to change the hand setting in various setting modes. In most cases, holding down these buttons will start high-speed movement of the applicable hand(s) and day.

•High-speed movement of hands and day will continue until you press any button, or until the moving hand(s) and day finishes one complete cycle.

-One complete cycle for the hands is one revolution (360 degrees) of the hour hand, or 24 hours.

-One complete cycle for the day is 31 days.

•High-speed hand movement also is triggered by changing from one mode to another, changing a World Time Mode setting (changing the World Time city in the World Time Mode, swapping the World Time city and Home city), etc.

•All buttons (except for the C button for changing modes) are disabled during a high- speed hand or date operation. You will be able to perform button operations again after high-speed operation is stopped.

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, 2000 to December 31, 2099. Setting of the date by the time calibration signal will not be performed starting from January 1, 2100.

•This watch can receive signals that differentiate between leap years and non-leap 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 with the precision noted in “Specifications”.

Timekeeping

•The year can be set in the range of 2000 to 2099.

•The watch’s built-in full automatic calendar makes allowances for different month lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced or when battery power drops to Level 3.

•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 World Time Mode is calculated in accordance with the Coordinated Universal Time (UTC) offset of each zone, based on your Home Time Zone time setting.

•UTC is the world-wide scientific standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s rotation. The reference point for UTC is Greenwich, England.

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