Casio Watch 2301 Users Manual QW 1798/2301

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1798/2301-1

Module No.1798/2301

GENERAL GUIDE

•Press CC

CC

C to change from mode to mode.

•Holding down CC

CC

C for a few seconds in any mode enters the Stopwatch Mode. Holding down CC

CC

C in the Stopwatch Mode changes to the Timekeeping Mode.

•There are two stopwatches in the Stopwatch Mode. Press CC

CC

C while in the Stopwatch Mode to toggle between them. See “STOPWATCH MODE” for more information.

•At any time except while making settings, press DD

DD

D to illuminate the display for about 4 seconds.

TIMEKEEPING MODE

•In the Timekeeping Mode, press BB

BB

B to switch between the 12-hour and 24-hour

formats.

To set the time and date

1. Hold down AA

AA

A until the seconds digits start to flash.

2. Press CC

CC

C to move the selection around the display in

the following sequence.

Seconds Hour Minutes

Day YearMonth

3. While the seconds digits are selected (flashing), press DD

DD

D to reset the seconds to

00. If you press DD

DD

D while the seconds count is in the range of 30 to 59, they are

reset to 00 and 1 is added to the minutes. If the seconds count is in the range of 00

to 29, the minutes count is unchanged.

4. While any other digits (besides seconds), are selected (flashing), press DD

DD

D to in-

crease the number or BB

BB

B to decrease it. Holding down either button changes the

digits at high speed.

•The date can be set with the range of January 1,1995 to December 31, 2039.

5. After you are set the time and date, press AA

AA

A to return to the Timekeeping Mode.

•The day of the week is automatically set in accordance with the date.

•If you do not operate any button for a few minutes while a selection is flashing, the

flashing stops and the watch goes back to the Timekeeping Mode automatically.

•When the time shown on the display does not match the analog setting, see

“H-SET MODE” to correct the analog setting.

ABOUT THE BACKLIGHT

•Hold down DD

DD

D to illuminate the display for about 4 seconds. The backlight is dis-

abled while an input screen (with a flashing setting) is on the display.

•The backlight of this watch employs an electro-luminescent (EL) light, which loses

its illuminating power after very long term use.

•Frequent use of the backlight shortens the battery life.

•The watch emits an audible sound whenever the display is illuminated. This does

not indicate malfunction of the watch.

•The illumination provided by the backlight may be hard to see when viewed under

direct sunlight.

•The backlight automatically turns off whenever an alarm sounds.

STOPWATCH MODE

The Stopwatch Mode automatically saves the best five lap times in memory, along

with lap numbers. You can later recall the saved data using the “RESULT MODE”.

The Stopwatch Mode provides you with the following types of stopwatch capabilities.

Single Stopwatch

This is a standard stopwatch that measures elapsed time and lap times.

Dual Stopwatch

This stopwatch lets you measures the times of two cars or runners at the same

time.

Selecting the Stopwatch Type

While in the Stopwatch Mode, press CC

CC

C to toggle between the Single Stopwatch and

Dual Stopwatch. Note that the CC

CC

C button is disabled while a stopwatch timing opera-

tion is in progress.

Depending on your watch model, the stopwatch display indicators may show CAR1

and CAR2 or STW1 and STW2.

Single Stopwatch Dual Stopwatch

Stopwatch type

indicator

Single Stopwatch

The Single Stopwatch is a standard stopwatch that measures elapsed time and lap

times.

Lap time

Total time

Hours

Minutes

Seconds

Minutes

Seconds

1/100 Second

To measure elapsed time with the Single Stopwatch

1. Press BB

BB

B to start timing.

2. Press BB

BB

B again to stop timing.

You can repeat steps 1 and 2 as many times as you like.

3. Pressing AA

AA

A while timing is stopped resets the display to all zeros.

To measure lap times with the Single Stopwatch

1. Press BB

BB

B to start timing.

2. Pressing AA

AA

A while an timing operation is in progress displays the lap time in the

upper part of the display and the lap number in the lower part. This information

remains displayed for about four seconds, after which the elapsed time display

returns.

You can repeat step 2 as many times as you like.

3. Press BB

BB

B to stop timing.

4. Pressing AA

AA

A while timing is stopped resets the display to all zeros.

•The final time on the display when you press BB

BB

B to stop timing is not stored into

memory as a lap time. If you want to save the final time, press AA

AA

A and then BB

BB

B.

Dual Stopwatch

Use the Dual Stopwatch to measure the times of two cars or runners at the same

time. You can also produce lap times for both and determine the difference between

them.

•The Dual Stopwatch is designed to time two runners or cars starting or passing at

different times. Accurate measurement is not possible when both start or pass at

the same time or close to the same time.

To use the Dual Stopwatch

1. Press BB

BB

B to start timing of the first starter, which appears in the upper part of the

display.

2. Press AA

AA

A to start timing of the second starter, which appears in the lower part of the

display.

3. When the first starter passes the timing points, press BB

BB

B.

4. When the second starter passes the timing points, press AA

AA

A.

•The difference between the two times appears on the display for about four sec-

onds. After that, each lap time appears for about four seconds.

•If the time of the second starter is faster than that of the first, the time difference is

displayed as a negative value.

•If the time difference is 10 minutes or more, -- -- -- is displayed in place of the time.

•If the times being compared are from different laps, the time difference is shown

without a plus or minus indication.

•Hold down AA

AA

A or BB

BB

B to stop timing. The final time on the display when you hold down

AA

AA

A or BB

BB

B to stop timing is not stored into memory as a lap time. If you want to save

the final time, press AA

AA

A or BB

BB

B, and then hold down AA

AA

A or BB

BB

B to stop timing.

RESULT MODE

Use this mode to view the best five lap times and lap numbers. Lap times are stored

by either a Single Stopwatch or Dual Stopwatch operation. Current memory contents

are always the results produced by the last stopwatch operation.

If you know the length of a lap, you can input it and calculate the speed as well. You

can input or change the length either before or after the timing operation.

To input the length of a lap

1. Hold down AA

AA

A until the kilometers digits start to flash on the display

2. Each press of CC

CC

C moves the input position between the kilometers digits and the

decimal digits.

3. After inputting the value you want, press AA

AA

A to save it.

•If you do not operate any button for a few minutes while a selection is flashing, the

flashing stops and the watch goes back to the Result Mode automatically.

Result ModeTimekeeping

Mode H-SET Mode Single

Stopwatch

Dual Time Mode Alarm Mode Dual

Stopwatch

Stopwatch Mode

Month Day Day of

week

Hour Minutes

Seconds

PM

indicator

Lap time

(second starter)

Start/Lap

(second starter)

Start/Lap

(first starter)

Lap time

(first starter)

MinutesSeconds

1/100 Second

1798/2301-2

Viewing Result Mode Data

Press BB

BB

B to cycle through the best five lap times. Pressing AA

AA

A while a lap time is on

the display shows the average speed for the lap. Press AA

AA

A again to return to the lap

time.

•Pressing BB

BB

B while the average speed is on the display advances to the next lap

time.

•If the average speed is 1000 km/h or more, E r r is displayed in place of the average

speed.

Hour Minutes

Hour Minutes

Mode indicator

Hour Minutes

•The format (12-hour and 24-hour) of the alarm time matches the format you select

for normal timekeeping.

•When setting the alarm time using the 12-hour format, take care to set the time

correctly as morning or afternoon.

4. After you set the alarm time, press AA

AA

A to return to the Alarm Mode.

•If you do not operate any button for a few minutes while a selection is flashing, the

flashing stops and the watch goes back to the Alarm Mode automatically.

To stop the alarm

•Press any button to stop the alarm after it starts to sound.

To turn the Daily Alarm and Hourly Time Signal on and off

Press BB

BB

B while in the Alarm Mode to change the status of the Daily Alarm and Hourly

Time Signal in the following sequence.

To test the alarm

Hold down BB

BB

B while in the Alarm Mode to sound the alarm.

Note that this operation also changes the Daily Alarm and Hourly Time Signal on/off

setting.

H-SET MODE

When the time shown on the display does not match the analog setting, use this

mode to correct the analog setting.

To set the analog time

1. Hold down AA

AA

A while in the H-SET Mode until the digital time (hour and minutes)

starts to flash on the display.

•The following step changes the hands of the analog time-

piece without changing the flashing digital time.

2. Press DD

DD

D to advance the hand setting of the analog time-

piece. Holding down DD

DD

D changes the hand setting at high

speed.

•Pressing BB

BB

B while holding down DD

DD

D causes the hand set-

ting to change at high speed. The hands continue to

move even when you release the buttons. Press DD

DD

D or

BB

BB

B to stop them.

•The analog time setting does not stop automatically when

it reaches the current time. You must stop the hands

manually.

•Note that there is not function for moving the hands back,

so be sure that you stop any high-speed hand setting

operation before the time you want to set is reached.

3. After you set the analog time, press AA

AA

A to return to the H-SET Mode.

•If you do not operate any button for a few minutes while a selection is flashing, the

flashing stops and the watch goes back to the H-SET Mode automatically.

Both OFF Daily Alarm

Only Hourly Time

Signal Only Both ON

Mode indicator

SecondsHour

Minutes

Lap number Order

Mode indicator

Stopwatch type

indicator

Lap time

Total time

Single Stopwatch

Lap number

(first starter) Order

(first starter)

Stopwatch type

indicator

Lap time

(first starter)

Lap time

(second starter)

Lap number

(second starter)

Order

(second starter)

Dual Stopwatch

Mode indicator

SecondsHour

Minutes

Deleting Result Mode Data

Result Mode data is deleted automatically whenever you perform a new stopwatch

timing operation. To manually delete data, hold down BB

BB

B and DD

DD

D in the Result Mode

until the message CLR appears on the display.

DUAL TIME MODE

To set the Dual Time 1. Hold down AA

AA

A until the hour digits start to flash on the

display. The hour digits flash because they are select-

ed.

2. Press CC

CC

C to change the selection in the following se-

quence.

3. Press DD

DD

D to increase the number or BB

BB

B to decrease it.

Holding down either button changes the current num-

ber at high speed.

4. After you set the dual time, press AA

AA

A to return to the

Dual Time Mode.

•The format (12-hour and 24-hour) of the dual time match-

es the format you select for normal timekeeping.

•In the Dual Time Mode, the seconds count is synchronized with the seconds count

of the Timekeeping Mode.

•If you do not operate any button for a few minutes while a selection is flashing, the

flashing stops and the watch goes back to the Dual Time Mode automatically.

Switching Dual Time and the Current Time

Holding down BB

BB

B for about two seconds in the Dual Time Mode causes the Dual Time

and current time to be reversed. The hands of the watch move at high speed to the

correct time. To switch back, simply hold down BB

BB

B again in the Dual Time Mode.

ALARM MODE

When the Daily Alarm is turned on, an alarm sounds for

20 seconds at the preset time each day. When the Hourly

Time Signal is turned on, the watch beeps every hour on

the hour.

1. Hold down AA

AA

A until the hour digits start to flash on the

display. The hour digits flash because they are select-

ed. At this time the Alarm is automatically switched on.

2. Press CC

CC

C to change the selection in the following se-

quence.

3. Press DD

DD

D to increase the number or BB

BB

B to decrease it.

Holding down either button changes the current num-

ber at high speed.

Flashing