Casio W87H-1V User Manual

Module No.1536/1636/1817

GENERAL GUIDE

Operation of Module 1817 is identical to that of Modules 1536/1636. The only difference
between these modules are the Module 1817 indicators, which are shown below. All
illustrations in this User’s Guide shows Modules 1536/1636 only.

TIMEKEEPING MODE

• In the Timekeeping Mode, press

CC

CC

C to switch between

the 12-hour and 24-hour formats.

• Day of the week is displayed as follows.
SU:Sunday MO:Monday TU:Tuesday
WE:Wednesday TH:Thursday FR:Friday
SA:Saturday

About the backlight

• Holding down

AA

AA

A at any time illuminates the display.

• The backlight of this watch employs an electrolumines­cent (EL) light, which loses its illuminating power after
very long term use.

• Frequent use of the backlight shortens the battery life.

ALARM MODE

When the Daily Alarm is switched on, the alarm sounds
for 20 seconds at the preset time each day. When the
Hourly Time Signal is switched on, the watch beeps ev­ery hour on the hour.

To set the alarm time

1. Hold down

AA

AA

A while in the Alarm Mode until the hour

digits start to flash on the display. The hour digits flash
because they are

selected

.

2.Press

AA

AA

A to change the selection in the following se-

quence.

• Once you reach the normal Alarm Mode, you have to hold down

AA

AA

A again until the

hour digits start to flash.

3.Press

CC

CC

C to increase the selected digits. Holding down

CC

CC

C changes the number at

high speed.

• 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 (PM).

4.After you set the alarm time, press

AA

AA

A to return to the Alarm Mode. At this time the

Daily Alarm is switched on automatically.

To stop the alarm

Press

AA

AA

A to stop the alarm after it starts to sound.

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

Press

CC

CC

C 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

CC

CC

C while in the Alarm Mode to sound the alarm.

Alarm on
indicator

Mode
indicator

Hourly time signal on
indicator

Hour

Minutes

Hour

Normal Alarm Mode (No digit flashes)

Minutes

Hourly Time
Signal only

Daily

Alarm only

Both offBoth on

(a) Elapsed time measurement

Start

Stop Re-start Stop Clear

Start

Split Split release Stop Clear

Start

Split Stop Split release Clear

(b) Split time measurement

(c) Split time and 1st-2nd place times

First runner
finishes.

Second runner
finishes.
Record time of
first runner.

Record time of
second runner.

TIME SETTING MODE

To set the time and date

1.Use

BB

BB

B to enter the Time Setting Mode.

• The seconds digits flash because they are

selected.

2.Press

AA

AA

A to change the selection in the following se-

quence.

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

CC

CC

C to reset the seconds to

“00”. If you press

CC

CC

C while the seconds count is in the range of 30 to 59, the sec-

onds 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

CC

CC

C to in-

crease the number. While the day of the week is selected, pressing

CC

CC

C advances

to the next day. Holding down

CC

CC

C changes the current selection at high speed.

5.After you set the time and date, press

BB

BB

B to return to 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 Timekeeping Mode automatically.

Seconds Hour

Minutes

Day of Week MonthDate

PM indicator

24-hour indicator Alarm on indicator

Split indicator

Signal on indicator

Timekeeping Mode

Alarm Mode

Stopwatch Mode

Time Setting Mode

Date

Hour

Minutes

Seconds

PM indicator

Day of the week

1/100 second

Seconds

Mode Indicator

Split time indicator

Minutes

Seconds

Hour

Minutes

PM indicator

Day of the week

Date

• Press

BB

BB

B to change from mode to mode.

• After you perform an operation in any mode, pressing

BB

BB

B returns to the Timekeeping

Mode.

STOPWATCH MODE

The Stopwatch Mode lets you measure
elapsed time, split times, and two finishes.
The range of the stopwatch is 59 minutes,

59.99 seconds.