Casio 2984 User Manual

MA0511-EA

Operation Guide 2984

Modes and Display Screens

Timekeeping Mode

Year

PM indicator (no display for AM)

Hour, Minute, Second

Month, DayDay of the Week

Button

(Light)

Modes

• For details about each mode, see each section of this Operation Guide.

Timekeeping Mode

Dual Time Mode

Stopwatch Mode

Recall Mode

Alarm Mode Timer Mode

Illumination

An EL (electroluminescent) panel is used to illuminate the display for easy reading in the dark. An auto light turns on illumination automatically when you angle the watch towards your face for viewing.

❚

To turn on illumination manually

In any mode, press the

This will turn on illumination for about 1.5 seconds.

• Pressing the L button turns on illumination regardless of whether the auto light switch is on or off.

❚

To turn the auto light switch on or off

The auto light switch turns on illumination for about 1.5 seconds when you angle the watch towards your face.

In the Timekeeping Mode, hold down the about two seconds to toggle the auto light switch on or off.

An indicator is on the display while the auto light switch is turned on.

L button.

D button for

Auto light switch on indicator

❚

Turning on Illumination with Auto Light

With the watch on your wrist, position it parallel with the ground.

• You should be wearing the watch on the outside of your wrist when using auto light.

• Make sure that a line running from the left side (9 o’clock) to the right side (3 o’clock) of the watch is within ±15 degrees parallel with the ground. Auto light may not operate properly if the angle is greater than 15 degrees.

Important!

• Illumination may be difficult to see under bright sunlight.

• Illumination turns off automatically if an alarm sounds, etc.

• You may notice a slight sound from the watch while illumination is turned on. This is the

sound of EL panel vibration and does not indicate malfunction.

Rotate your arm so the watch is angled at about 40 degrees, so you can read its face.

40 degrees minimum

Auto Light Precautions

• To conserve battery power, the auto light switch can remain on for a maximum of about six hours. After that, it will turn off automatically, and the “ ” indicator will disappear from the display.

• If you want to continue using auto light, hold down the D button for about two seconds

again until the “ ” indicator reappears. Note, however, that frequent use of auto light can run down the battery.

• Illumination may not turn on immediately when you angle the watch towards your face. This does not indicate malfunction.

• Illumination remains turned on for about 1.5 seconds only, even if you leave the watch angled towards your face.

• Illumination may turn on unintentionally when you wear the watch on the inside of your wrist, when you shake your arm, or when you raise your arm. Be sure to turn off the auto light switch whenever you do not need illumination.

• Keep the auto light switch turned off whenever you are wearing the watch on the inside of

your wrist.

• Electro-static charge and magnetism can interfere with auto light operation and even make operation impossible. If this happens, lower your arm to the starting position and then raise it again. If you still have trouble with auto light illumination, try lowering your arm down to your side and then raise it to your face for reading.

• You may hear a faint rattling sound when you move the watch around. This sound is caused by the movement of a metal bulb that controls operation of the auto light switch, and does not indicate malfunction.

Operation Guide 2984

Using the Stopwatch

Whenever you perform a lap/split time operation, the stopwatch stores a record of the lap/ split time. There is enough memory to hold up to 60 lap/split time records. For each measurement operation, the watch also creates and store a title screen (which also takes up one record in memory) that shows the distance and the date of the measurement. The watch calculates the distance covered using elapsed time, based on a fixed pace.

• In the Timekeeping Mode, press the C button once to enter the Stopwatch Mode.

• For the stopwatch to be able to perform distance calculations, you need to use the

procedure under “Configuring Individual Preferences” to specify your stride length and other information.

• Stopwatch Measurement Unit: 1/100 second (1 second from the 10th hour) Measurement Range: 99 hours, 59 minutes, 59 seconds

• Distance Measurement Unit: 0.1 km Measurement Range: 99.9km Maximum Cumulative Distance: 999.9km

• Lap/Split Count Range: 99

Button

• Lap/Split Screen Switch

Remaining Memory Records

Split Time

• You can change the lap time and split time positions by pressing the B button.

❚

Memory

The watch’s memory can be divided into multiple measurement logs. Each log has its own title screen that shows the distance and date of the measurement, which takes up one memory record. The memory’s maximum capacity is 60 lap/split time records, plus at least one log title screen, for a total of 61 records.

• When memory becomes full, the watch automatically deletes old data to make room for newly measured data.

Example 1: Memory usage when the current elapsed time measurement is the only

Example 2: Memory usage when there are multiple elapsed time measurements in

• For information about recalling stopwatch records, see “Viewing Stopwatch Records”.

Data Save Timing

Whenever you press the D button to display a lap/split, the lap/split time and distance are stored in memory. Stopping the elapsed time operation and pressing the D button to reset the stopwatch to all zeros stores the final distance in memory.

Memory Full

Storing data when memory is full automatically deletes the oldest record currently in memory to make room for the new data.

Example 1: When the current log is the only one in memory

Example 2: When there are multiple records or logs in memory

• To clear memory data manually, see “To clear measurement log data”.

one in memory

Log Title Screen + 60 lap/split records = 61 records

• An elapsed time measurement is one that runs from when the stopwatch is started from all zeros, until it is again reset to all zeros.

memory

Measurement 1:Log Title Screen + 30 lap/split records = 31 records Measurement 2:Log Title Screen + 29 lap/split records = 30 records

Recording a new lap/split record while memory is full causes the oldest lap/ split time currently in memory to be deleted to make room for the new one.

All of the records of the oldest stopwatch log are cleared to make room for the new data.

Hour

Minutes

(31 + 30 = 61 total)

Button

• Start

• Stop

Seconds

Current Time 1/100 second

Lap Times and Split Times

A lap time is the time that elapses during a specific portion of the race, such as a lap around a track, while a split time is the time that elapses from the beginning of a race up to a certain point.

Lap Time Example

Measuring the lap time for each lap of a track event, car race, etc.

Lap 1

Start Stop

Lap 2

Lap 3

Split Time Example

Measuring splits at the 10km, 20km, and 30km points of a marathon.

Split 1

Start Stop

Split 2

Split 3

Time Range Display Switching

When you first start an elapsed time measurement, the lower part of the display shows hours, minutes, seconds, and 1/100 second, while the upper part shows minutes, seconds, and 1/100 seconds. When the time in the lower part of the display reaches 10 hours, it switches to hours, minutes, and seconds. The upper part of the display switches to hours, minutes, and seconds when its time reaches one hour.

Lap/Split Count

Hour

Minutes

1/100 secondMinutes

Seconds SecondsHour

Seconds 1/100 second

Hour

Minutes

Minutes Seconds

Viewing Stopwatch Records

Enter the Recall Mode when you want to view stopwatch records.

• In the Timekeeping Mode, press the C button twice to enter the Recall Mode.

Entering the Recall Mode displays a title screen showing the number of the newest measurement log.

Distance

Measurement Log Number

❚

To search for a measurement log

Press the B button to scroll through the title screens in sequence, from the newest to the oldest.

• Holding down the B button scrolls at high speed.

Title Screen

Measurement Date (Month/Day)

Cumulative DataNewest Measurement Next Older Measurement

• • •

Cumulative Distance

To measure elapsed time

• Start

• Stop

• Reset

(Data to memory)

Start

Whenever you press the D button to reset the stopwatch to all zeros, the data from the last measurement operation is stored in memory.

Cumulative Time Measurement

Pressing the A button to restart the stopwatch without resetting it to all zeros resumes elapsed time measurement from where it was last stopped.

Stop Reset

To record lap/split times

• Start

• Stop

Start

• Lap/Split (Data to memory)

• Reset (Data to memory)

❚

To search for lap/split data

While the title screen of the measurement log you want is displayed, use the A and D buttons to scroll through the lap/split time records in the log.

• Holding down either button scrolls the records at high speed.

• The location (upper or lower part of the display) of the lap and split times is the same as

what you selected in the Stopwatch Mode.

Best Lap Screen

The “ ” indicator is displayed on the screen of the best lap time.

• The “ ” indicator does not appear on any screen when the best lap is cleared because memory became full.

• The watch will exit the lap/split screen automatically after

Lap/Split Lap/Split

about eight seconds.

1-second Interval

• • •

• • • Stop Reset

Final Lap/SplitTitle Screen Lap/Split 1

Lap time

Split Time

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