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USER’S GUIDE 2512
4
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 A to 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 D at 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 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.
Hours
Seconds 1/100 second
Minutes
D
Start Stop
Elapsed Time
➤
Re-start Clear
D ➤
Stop
D
➤
D
➤
A
Split Time
D
Start Split
➤
Split release
Clear
A
➤
Stop
A
➤
D ➤
A
Two Finishes
D
Start Split
➤
Stop
Clear
A
➤
Split release
D ➤
A
➤
A
First runner
finishes.
Display time of
first runner.
Second runner
finishes.
Display time of
second runner.
(SPL displayed)
To measure times with the stopwatch
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.
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.
Solar cell
• 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 CASIO-specified CTL1616
battery only. Other rechargeable batteries can cause damage to the watch.
• 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.
Battery power indicator
Recover
indicator
Level
1
2
3
4
Battery Power
Indicator
Charge
Soon
Alert
Function Status
All functions enabled.
All functions enabled.
Beeper tone, backlight,
display, and buttons are
disabled.
All functions, including
timekeeping, are disabled.
• 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
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.
After some time, battery power will recover and the Recover indicator ( ) will
disappear, indicating that the above functions are enabled again.
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 (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
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)
Approximate Exposure Time
Level 4 Level 3 Level 2 Level 1
52 minutes 15 hours 2 hours
2 hours 67 hours 13 hours
4 hours ------------ ------------
37 hours ------------ ------------
▲
▲
▲
• 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 A 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.