Casio 3100 manual

MA0801-EA

Operation Guide 3100

About This Manual

(Light)

(Light)

•Depending on the model of your watch, display text appears either as dark figures on a light background or light figures on a dark background. All sample displays in this manual are shown using dark figures on a light background.

•Button operations are indicated using the letters shown in the illustration.

•Each section of this manual provides you with the information you need to perform operations in each mode. Further details and technical information can be found in the “Reference” section.

General Guide

•Press Bto change from mode to mode.

•In any mode (except when a setting screen is on the display), press Lto illuminate the display.

Timekeeping Mode Stopwatch Mode Preset Timer Mode Countdown Timer Mode World Time Mode Alarm Mode

Press .

Timekeeping

Use the Timekeeping Mode to set and view the current Hour : Minutes : Seconds time and date.

PM indicator

Read This Before You Set the Time and Date ! The times displayed in the Timekeeping Mode and World Time Mode are linked. Because of this, make sure you select a Home City code before you set the time and date.

Day of week Month – Day

To toggle between 12-hour and 24-hour timekeeping

In the Timekeeping Mode, press Dto toggle between 12-hour timekeeping and 24-hour timekeeping.

•With the 12-hour format, the P (PM) indicator appears on the display for times in the range of noon to 11:59 p.m. and the A (AM) indicator appears for times in the range of midnight to 11:59 a.m.

•With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without any indicator.

•The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is applied in all other modes.

•The A and P indicators are not displayed when the current time is displayed in other modes.

Stopwatch

To set the time and date

1.In the Timekeeping Mode, hold down Auntil the seconds start to flash, which indicates the setting

screen.

2. Press Bto move the flashing in the sequence shown below to select other settings.

Seconds	DST	City Code	Hour
Day	Month	Year	Minutes

Current

Timekeeping Mode time

The Stopwatch Mode lets you time a game or event. The upper display shows non-stop total elapsed time, while the lower display shows event elapsed time, which can be paused as required for time outs, half time, etc.

•The measurement limit of the upper display (total time) is 99 minutes 59 seconds.

•The measurement limit of the lower display (event time) is 59 minutes 59 seconds.

•A stopwatch measurement operation continues to run until you stop it. If either time reaches its measurement limit, it will restart from zero.

•A stopwatch measurement operation continues even if you exit the Stopwatch Mode.

•Starting event timing will cause the display to change to the Elapsed Time Screen from the initial screen shown on this page.

3.When the setting you want to change is flashing, use Dand Cto change it as described below.

Screen	To do this:	Do this:
50	Reset the seconds to 00	Press D.
OFF	Toggle between Daylight Saving Time (ON)	Press D.
	and Standard Time (OFF)
	Change the city code	Use D(east) and C(west).
	Change the hour or minutes	Use D(+) and C(–).
	Change the year

6-30Change the month or day

•For details about city codes, see the “City Code Table”.

•See “Daylight Saving Time (DST)” for details about DST setting.

4.Press A to exit the setting screen.

Daylight Saving Time (DST)

Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

To toggle the Timekeeping Mode time between DST and Standard Time

DST indicator	1. In the Timekeeping Mode, hold down Auntil the
	seconds start to flash, which indicates the setting
	screen.
	2. Press Bto display the DST setting screen.
	3. Press Dto toggle between Daylight Saving Time
	(ON displayed) and Standard Time (OFF displayed).
	4. Press Ato exit the setting screen.
	• The DST indicator appears on the display to indicate
	that Daylight Saving Time is turned on.

•All of the operations in this section are performed in the Stopwatch Mode, which you enter by pressing B.

Elapsed Time Screen

Total time minutes, seconds, 1/100 second

* Once started, this time

measurement cannot be
paused. It shows total time	Event time minutes, seconds
since the stopwatch	* The time measurement in this
measurement operation
	display can be paused and
started.
	restarted by pressing .

Basic Event Timing Operation
				Hold down
Start	Stop*	Re-start	Stop*	Clear

* Total time measurement in upper display continues.

Using the Stopwatch Mode to Time a Sporting Event

You can time a sporting event with the Stopwatch Mode either with or without presetting the duration of the event. If you do, the watch will beep when the total time in the upper display reaches the preset event duration.

If the event is interrupted for timeouts or some other reason, press Dto pause and restart event time measurement in the lower display. Since total time measurement continues in the upper display, you can calculate the time that play was interrupted (lost time) by subtracting the time in the lower display from the time in the upper display.

1