USER’S GUIDE 2512
To edit a data memory record
1.In the Data Memory Mode, display the record you want to edit.
2.Press B and the flashing cursor appears on the display.
3.Press C to move the flashing to the character you want to change.
4.Use D and Ato change the character.
5.After making the changes you want, press B to store them and return to the data memory record screen.
To delete a data memory record
1.In the Data Memory Mode, display the record you want to delete.
2.Press B and the flashing cursor appears on the display.
3.Press A and Dat the same time to delete the record.
•The message CLEAR! appears to indicate that the record is being deleted. After the record is deleted, the cursor appears on the display, ready for input.
4.Input data or press B to return to the remaining memory screen.
Stopwatch
∙ The Level 3 charge warning indicator tells you that battery power is very low, and |
that exposure to bright light for charging is required as soon as possible. |
∙ At Level 4, all functions are disabled and settings return to their initial factory |
defaults. Functions are enabled once again after the rechargeable battery is |
charged, but you need to set the current time, date, and all other settings after the |
battery is recharged to Level 2 from Level 4. Though the time appears on the display |
after the battery is charged to Level 3, you will not be able to change the time setting |
until the battery reaches Level 2. |
∙ Leaving the watch in direct sunlight or some other very strong light source can |
cause the battery power indicator to temporarily show a reading that is actually |
higher than the battery level. The correct battery power indicator should appear after |
a few minutes. |
∙ If you use the backlight or the alarms a number of times during a short period, the |
Recover indicator ( ) appears on the display and the following operations become |
disabled until battery power recovers. |
Backlight |
Beeper tone |
Calibration reception |
After some time, battery power will recover and the Recover indicator ( ) will |
disappear, indicating that the above functions are enabled again. |
Seconds 1/100 second
Hours Minutes
The stopwatch lets you measure elapsed time, split times, and two finishes.
∙The display range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds.
∙The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.
∙Exiting the Stopwatch Mode while a split time is frozen on the display clears the split time and returns to elapsed time measurement.
∙The stopwatch measurement operation continues even if you exit the Stopwatch Mode.
∙All of the operations in this section are
performed in the Stopwatch Mode, which you enter by pressing C.
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
To measure times with the stopwatch
Elapsed Time
D | ➤D | ➤D | ➤D | ➤A |
Start | Stop |
| Stop | Clear |
Split Time |
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D | ➤A | ➤A | ➤D | ➤A |
Start | Split | Split release | Stop | Clear |
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Two Finishes |
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D | ➤A | ➤D | ➤A | ➤A |
Start | Split | Stop | Split release | Clear |
| First runner | Second runner | Display time of |
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| finishes. | finishes. | second runner. |
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| Display time of |
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| first runner. |
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Battery
This watch is equipped with a solar cell and a 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.
Solar cell
Example: Orient the watch so its face is pointing at a light source.
∙ Note that charging efficiency drops when any part of the solar cell is blocked by clothing, etc.
∙ The illustration shows how to position a watch with a resin band.
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. Be sure that the watch is normally exposed to bright light whenever possible.
∙This watch employs a solar cell that converts light into electricity that charges a built- in rechargeable battery. Normally, the rechargeable battery should not need replacement, but after very long use over a number of years, the rechargeable battery may lose its ability to achieve a full charge. Should you notice problems with getting the rechargeable battery to a full charge, contact your dealer or CASIO distributor about having the rechargeable battery replaced.
∙The rechargeable battery should be replaced with a
∙All data stored in memory is deleted, and the current time and all other settings return to their initial factory defaults whenever battery power drops to Level 4 and when you have battery replaced.
∙Turn on the watch’s Power Saving function and keep it 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 Indicator
The battery power indicator on the display shows you the current status of the rechargeable battery’s power.
| Level | Battery Power | Function Status |
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| Indicator |
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Battery power indicator | 1 |
| All functions enabled. |
Recover |
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indicator | 2 |
| All functions enabled. |
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| 3 | Charge | Beeper tone, backlight, |
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| Soon | display, and buttons are |
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| Alert | disabled. |
| 4 |
| All functions, including |
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| timekeeping, are disabled. |
Charging Guide
After a full charge, all functions of the watch remain enabled for up to about six months, the watch is used under the conditions described below.
Operating Conditions
∙Watch is not exposed to light
∙1 backlight operation (1.5 seconds) per day
∙10 seconds of alarm operation per day
∙3 times calibration reception per day
Charge Times
Exposing the watch to light for the periods shown below each day restores the power used by the above operating conditions.
Exposure Level (Brightness) | Approximate |
| Exposure Time |
Outdoor Sunlight (50,000 lux) | 5 minutes |
Sunlight Through a Window (10,000 lux) | 24 minutes |
Daylight Through a Window on a Cloudy Day (5,000 lux) | 48 minutes |
Indoor Fluorescent Lighting (500 lux) | 8 hours |
∙ Stable operation is promoted by frequent charging. |
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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 |
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(Brightness) | Level 4 |
| Level 3 | Level 2 |
| Level 1 | |||
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Outdoor Sunlight | 52 minutes | 15 hours |
| 2 hours | |||||
(50,000 lux) |
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Sunlight Through a | 2 hours |
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| 67 hours |
| 13 hours | |||
Window (10,000 lux) |
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Daylight Through a | 4 hours |
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Window on a Cloudy |
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Day (5,000 lux) |
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Indoor Fluorescent | 37 hours |
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Lighting (500 lux) |
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∙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 or Data Memory Mode for two or three minutes without performing any operation, it automatically changes to the Timekeeping Mode.
∙If you leave a screen with flashing digits or a cursor on the display for two or three minutes without performing any operation, the watch automatically saves anything you have input up to that point and exits the setting screen.
Data and Setting Scrolling
The Aand Dbuttons 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.
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