Casio 3197 l l ll, Reference, Charging Precautions, Stopwatch, Button Operation Tone, ll l l, Power Saving Function, Auto Return, Scrolling, Initial Screens, Timekeeping

Operation Guide 3197

•Performing illumination, or beeper operations during a

Recover indicator						short period may cause		(recover) to appear on the
	l		l	l		display.
l						After some time, battery power will recover and
					l
l					l	(recover) will disappear, indicating that the above
l
l		l l			l
						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 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

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.

•Stable operation is promoted by frequent exposure to light.

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			26 hours		7 hours
(50,000 lux)
Sunlight Through a		10 hours			127 hours		34 hours
Window (10,000 lux)
Daylight Through a		19 hours			259 hours		70 hours
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent		226 hours			- - - - - - - -		- - - - - - - -
Lighting (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.

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, the watch automatically creates a new “log” in its memory. The log remains open for data storage until you permanently close it by pressing A to clear the stopwatch to all zeros.

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.

•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.

•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.

•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 in “To measure times with the stopwatch”.

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 Re-start	Time measurement re-starts, without storing
	data in memory.
A Lap/Split	Creates new record: displayed lap/split times
A Clear	Creates new record: displayed lap/split times
	(Stopwatch display is cleared to all zeros.)

Button Operation Tone

		Mute indicator			The button operation tone sounds any time you press one
					of the watch’s buttons. You can turn the button operation
			llll		tone on or off as desired.
			l	l	• Even if you turn off the button operation tone, alarms,
			l
			l	l
			ll		the Hourly Time Signal, and other beepers all operate
					normally.
To turn the button operation tone on and off
	ll l l				1. In the Timekeeping Mode, hold down A until the city
					code starts to flash, which indicates the setting screen.
l		l
		l
l			l		2. Press Cnine times until the current button operation
l
l		l			tone setting (		or	) appears.
		l l l							(tone on)
					3. Press Dto toggle the setting between
					and	(tone off).
					4. Press Ato exit the setting screen.

•The mute indicator is displayed in all modes when the button operation tone is turned off.

Power Saving Function

When turned on, the Power Saving function enters a sleep state automatically whenever the watch is left in an area for a certain period where it is dark. The table below shows how watch functions are affected by the Power Saving function.

Power saving indicator

Elapsed Time	Display	Operation
in Dark
60 to 70 minutes	Blank, with Power Saving	All functions enabled, except for the
	indicator flashing	display
6 or 7 days	Blank, with Power Saving	Beeper tone, illumination, and display
	indicator not flashing	are disabled.

•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 state

Perform any one of the following operations.

•Move the watch to a well-lit area.

•Press any button.

To turn Power Saving on and off

			1. In the Timekeeping Mode, hold down Auntil the city
l l ll			code starts to flash, which indicates the setting screen.
			2. Press C 11 times until the Power Saving on/off screen
l		l
l		l	appears.
l		l	3. Press D to toggle Power Saving on ( ) and off (	).
l	l	l
		l l	4. Press A to exit the setting screen.
			• The Power Saving indicator is on the display in all
On/Off status			modes while Power Saving is turned on.

Auto Return

•If you do not perform any operation for about two or three minutes while a setting screen (with a flashing setting) is on the display, the watch will exit the setting screen automatically.

Scrolling

The Band D 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 at high speed.

Initial Screens

When you enter the World Time Mode or Alarm Mode, the data you were viewing when you last exited the mode appears first.

Timekeeping

•Resetting the seconds to 00 while the current count is in the range of 30 to 59 causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to 00 without changing the minutes.

•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.

•The current time for all city codes in the Timekeeping Mode and World Time Mode is calculated in accordance with the Coordinated Universal Time (UTC) for each city, based on your Home City time setting.

World Time

•The seconds count of the World Time is synchronized with the seconds count of the

Timekeeping Mode.

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