Casio 5091 Owner's Manual

MA0905-EA

Operation Guide 5091

About This Manual

• 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 C to change from mode to mode.

Timekeeping Mode Calendar Mode Alarm Mode Dual Time Mode Stopwatch Mode

Press .

Timekeeping

Use this mode to set the current time. An incorrect digital time setting will cause incorrect operation of the calendar.

To set the digital time

Hour hand Minute hand

Hold down . Press .

PM indicator

Hour

Seconds

1. In the Timekeeping Mode, hold down B until the seconds digits start to flash,

which indicates the setting screen.

2. Press C to reset the seconds to

3. Press B to move the selection to the hour digits.

4. Press C to increase the hour digits.

5. Press B to move the selection to the minutes digits.

6. Press C to increase the minutes digits.

7. Press B to move the selection to 12/24.

8. Press C to toggle the timekeeping format between 12-hour and 24-hour.

9. Press B to exit the setting screen.

• Resetting the seconds to causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are reset to

• 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 no 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.

To set the hands

In any mode, press A with a thin object to advance the analog time setting. Each press of A advances the time by 20 seconds. Three presses advance by one minute. Holding down A advances the analog setting at high speed. You can only advance the setting. You cannot reverse it.

Minutes

while the current count is in the range of 30 to 59

without changing the minutes.

Press .

Seconds Hour

12/24

Minutes

Press .Press .

Calendar

Use this mode to set today’s date (month, day, day of the week).

To set the date

Press .Hold down . Press .

DayMonth Day of week

Press .

Day of week

Month

1. In the Calendar Mode, hold down B until the month digits start to flash, which

indicates the setting screen.

2. Press C to increase the month digits.

3. Press B to move the selection to the day digits.

4. Press C to increase the day digits.

5. Press B to move the selection to the day of the week.

6. Press C to advance to the next day.

7. Press B to exit the setting screen.

• The watch does not make any allowance for leap years. Be sure to manually set February 29 when one occurs during a leap year.

Alarm

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.

• You can configure alarm settings and Hourly Time Signal settings in the Alarm

Mode, which you enter by pressing C.

To set the alarm time and to turn the Daily Alarm and Hourly Time Signal on and off

Mode indicator

1. In the Alarm Mode, hold down B until the hour digits start to flash, which indicates

2. Press C to increase the hour digits.

3. Press B to move the selection to the left minutes digit.

4. Press C to increase the left minutes digit.

5. Press B to move the selection to the right minutes digit.

6. Press C to increase the right minutes digit.

7. Press B to move to the Daily Alarm and Hourly Time Signal on and off setting.

8. Press C to cycle through the Daily Alarm and Hourly Time Signal settings as

9. Press B to exit the setting screen.

To stop the alarm

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

To test the alarm and select an alarm tone

Hold down C in any mode (except when making any settings) to sound the alarm. Note that the alarm sound changes each time you hold down C to test the alarm. There are a total of four different alarm sounds. The last alarm sound you hear when performing the above test is the one that is used for the Daily Alarm and the Hourly Time Signal.

• Note that holding down C also changes the mode.

Alarm on indicator

Left minutes digit

Press .

Hold down .

Hour

Hourly time

Minutes

the setting screen.

• The 12/24-hour format of the alarm time matches the format you select for normal timekeeping.

shown in the sequence below.

• At this time Daily Alarm and Hourly Time Signal automatically turn on.

Both ON Hourly Time

Press .

nal on indicator

Press .

Both OFF

Press .

Hour

Alarm/Hourly Time Signal setting

Press .

Daily Alarm only

Right minutes digit

Press .

Signal only

Operation Guide 5091

Dual Time

The Dual Time Mode lets you keep track of time in a different time zone.

• In the Dual Time Mode, the seconds count is synchronized with the seconds count of the Timekeeping Mode digital time.

To set the Dual Time

Press .Hold down . Press .

Minutes 12/24Hour

Mode indicator

1. In the Dual Time Mode, hold down B until the hour digits start to flash, which

indicates the setting screen.

2. Press C to increase the hour digits.

3. Press B to move the selection to the minutes digits.

4. Press C to increase the minutes digits.

5. Press B to move the selection to 12/24.

6. Press C to toggle the timekeeping format between 12-hour and 24-hour.

7. Press B to exit the setting screen.

• 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 no 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.

Hour

Minutes

Seconds

Press .

Stopwatch

Mode indicator

Minutes 1/100

Seconds

second

The Stopwatch Mode lets you measure elapsed time. The range of the stopwatch is 59 minutes, 59.99 seconds.

• The stopwatch continues to run, restarting from zero after it reaches its limit, until you stop it.

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

To use the Stopwatch

1. In the Stopwatch Mode, press B to start the

stopwatch.

2. Press B to stop the time measurement.

• You can press B as many times as you want to

resume and stop timing.

3. After you are finished using the stopwatch, hold down

B to clear the stopwatch time to all zeros.

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.

Auto return features

If you leave a screen with flashing digits for one or two minutes without performing any operation, the watch automatically saves any settings you have made up to that point and exits the setting screen.

Scrolling

The C button is used to scroll through setting screen data on the display. Holding down this button during a scroll operation scrolls through the data at high speed.

Specifications

Accuracy at normal temperature: ±30 seconds a month Timekeeping: Hour, minutes, seconds

Time format: Switchable between 12-hour and 24-hour formats

Calendar: Month, day, day of week

Calendar system: Auto-calendar set at 28 days for February

Alarm: Daily Alarm, Hourly Time Signal Dual Time: Hour, minutes, seconds

Time format: Switchable between 12-hour and 24-hour formats

Stopwatch

Measuring capacity: 59 minutes 59.99 seconds Measuring unit: 1/100 of a second Measuring modes: Elapsed time

Other: 2 analog hands: hour, minutes (hand moves every 20 seconds)

Battery: One silver oxide battery (Type: SR920W)

Battery life: Approximately 2 years under the following condition

•

20 seconds alarm operation per day