Operation Guide 3271
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 exposed to bright light whenever possible.
•This watch uses a 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 rechargeable battery to charge fully, contact your dealer or CASIO distributor about having it replaced.
•Never try to remove or replace the watch’s rechargeable battery yourself. Use of the wrong type of battery can damage 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 5 (pages
•Turn on the watch’s Power Saving function (page
•The flashing L and LOW indicators at level 3 tell you that battery power is very low, and that exposure to bright light for charging is required as soon as possible.
•At Level 5, all functions are disabled and settings return to their initial factory defaults. Once the battery reaches Level 2 after falling to Level 5, reconfigure the current time, date, and other settings.
•The watch’s Home City code setting will change automatically to TYO (Tokyo) whenever the battery drops to Level 5.
•Display indicators reappear as soon as the battery is charged from Level 5 to Level 2.
•Leaving the watch exposed to direct sunlight or some other very strong light source can cause the battery power indicator to show a reading temporarily that is higher than the actual battery level. The correct battery level should be indicated after a few minutes.
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. Also note that allowing the watch to become very hot can cause its liquid crystal display to black out. The appearance of the LCD should become normal again when the watch returns to a lower temperature.
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
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 5 | Level 4 | Level 3 | Level 2 | Level 1 | |||
|
|
|
| ▲ |
| ▲ |
| ▲ |
|
|
|
|
|
| |||
Outdoor Sunlight |
| 3 hours |
|
| 23 hours | 7 hours | ||
(50,000 lux) |
|
|
|
|
|
|
|
|
Sunlight Through a |
| 9 hours |
|
| 115 hours | 31 hours | ||
Window (10,000 lux) |
|
|
|
|
|
|
|
|
Daylight Through a |
| 17 hours |
|
| 234 hours | 63 hours | ||
Window on a Cloudy |
|
|
|
|
|
|
|
|
Day (5,000 lux) |
|
|
|
|
|
|
|
|
Indoor Fluorescent |
| 202 hours |
|
| - - - - - - - - | - - - - - - - - | ||
Lighting (500 lux) |
|
|
|
|
|
|
|
|
•The above exposure time values are all for reference only. Actual required exposure times depend on lighting conditions.
•A log title screen identifies a single elapsed time operation, from the start up to the point the stopwatch is reset to all zeros.
•A lap/split time record is stored under a log title screen each time you perform a lap/ split operation.
Example 1
Single elapsed time measurement
Log title screen + 120 lap records = 121 records
Example 2
Multiple elapsed time measurements
Measurement 1 log title screen + 60 lap records = 61 records
Measurement 2 log title screen + 59 lap records = 60 records
•Use the Recall Mode to view stopwatch records (page
•If watch memory is already full when you perform a stopwatch button operation that creates a new log, the oldest log in memory and all of its records are deleted automatically to make room for the new log.
•If you are adding records to the only log in memory and watch memory becomes full, adding another record causes the oldest record in the log to be deleted automatically to make room for the new record.
Battery Power Indicator and Recover Indicator
The battery power indicator on the display shows you the current status of the rechargeable battery’s power.
Battery power | Level | Battery Power Indicator | Function Status | ||
indicator | 1 |
|
| All functions enabled. | |
|
|
|
|
|
|
|
| 2 |
|
| All functions enabled. |
|
|
|
|
| |
|
| 3 | l l ll | Illumination, and beeper | |
|
| l | l | ||
|
|
| l | l | disabled. |
|
|
| l |
|
|
|
|
| l | l |
|
|
|
|
| l l l |
|
|
| 4 |
|
| Except for timekeeping and |
|
|
|
|
| the CHG (charge) indicator, |
|
|
|
|
| all functions and display |
|
|
|
|
| indicators disabled. |
|
| 5 |
|
| All functions disabled. |
|
|
|
|
|
|
•Performing illumination, or beeper operations during a
Recover indicator | short period may cause | (recover) to appear on the | ||
|
| display. |
| |
|
| After some time, battery power will recover and | ||
|
| (recover) will disappear, indicating that the above | ||
|
| functions are enabled again. | ||
|
| • If | (recover) appears frequently, it probably means | |
that remaining battery power is low. Leave the watch in bright light to allow it to charge.
Charging Guide
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) | 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 |
•For details about the battery operating time and daily operating conditions, see the “Power Supply” section of the Specifications (page
•Stable operation is promoted by frequent exposure to light.
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.
Stopwatch
•You can use lap time measurement to time how long it takes to complete a specific portion (such as a single lap) of a race.
•You can use split time measurement to time how long it takes to get from the start to a specific point in a race.
Memory Management
Each time you press D to start a new elapsed time or lap/split operation in the Stopwatch Mode (page
The watch has enough memory to hold up to 121 records. Each log title screen (start date and time) and lap/split time uses up one record.
•If you are adding records to a log when there are multiple logs in memory and watch memory becomes full, adding another record causes the oldest log in memory and all of its records to be deleted automatically to make room for new records.
How Stopwatch Data is Stored
The following table describes how data is stored when you perform the various button operations described on page
Stopwatch Button Operation | Data Store Operation |
D Start (from all zeros) | Creates a new log for the current date. (The log |
| is updated as timing progresses.) |
D Stop | Time measurement stops, without storing data in |
| memory. |
D | Time measurement |
| data in memory. |
B Lap/Split | Creates new record: displayed lap/split times |
B Clear | Creates new record: displayed lap/split times |
| (Stopwatch display is cleared to all zeros.) |