Casio 5381 Operation Guide

MA1402-EA

Operation Guide 5381

• The measurement functions built into this watch are not intended for taking

measurements that require professional or industrial precision. Values produced by this watch should be considered as reasonable representations only.

• Note that the tide and Moon data calculated by this watch are approximate and

are intended as general information only. Never try to use it for marine navigation or any other purposes requiring accurate measurements.

• Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any

damage or loss suffered by you or any third party arising through the use of your watch or its malfunction.

E-2

Warning!

Things to check before using the watch

1. Check the Home City and the daylight saving time (DST) setting.

Use the procedure under “To conﬁ gure Home City settings” (page E-18) to conﬁ gure your Home City and daylight saving time settings.

Important!

• Proper World Time Mode data depend on correct Home City, time, and date

settings in the Timekeeping Mode. Make sure you configure these settings correctly.

2. Set the current time.

• See “Adjusting the Digital Time and Date Settings” (page E-21).

The watch is now ready for use.

Congratulations upon your selection of this CASIO watch.

About This Manual

ENGLISH

• Depending on the model of your watch, display text

appears either as dark ﬁ gures on a light background, or light ﬁ gures on a dark background. All sample displays in this manual are shown using dark ﬁ gures on a light background.

• Button operations are indicated using the letters shown

in the illustration.

• Note that the product illustrations in this manual are

intended for reference only, and so the actual product may appear somewhat different than depicted by an illustration.

Contents

About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3

Things to check before using the watch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4

Mode Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-10

Timekeeping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-17

Conﬁ guring Home City Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-18

To conﬁ gure Home City settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-18

To change the Daylight Saving Time (summer time) setting . . . . . . . . . . . . . . E-20

Adjusting the Digital Time and Date Settings . . . . . . . . . . . . . . . . . . . . . . . . . E-21

To conﬁ gure the digital time and date settings . . . . . . . . . . . . . . . . . . . . . . . . E-21

E-1

E-3

E-4

Thermometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-25

To take a temperature reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-25

To switch a temperature reading unit between Celsius (°C) and

Fahrenheit (°F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-26

Checking Tide Levels and Moon Ages (Tide/Moon) . . . . . . . . . . . . . . . . . . . . E-31

Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-41

Checking the Current Time in a Different Time Zone . . . . . . . . . . . . . . . . . . .E-42

To enter the World Time Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-43

To view the time in another time zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-43

To specify standard time or daylight saving time (DST) for a city . . . . . . . . . . . E-44

To swap your Home City and World Time City . . . . . . . . . . . . . . . . . . . . . . . . E-45

E-6

Using the Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-52

To set an alarm time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-52

To test the alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-53

To turn an alarm and the Hourly Time Signal on and off . . . . . . . . . . . . . . . . . E-54

To stop the alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-54

Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-55

To turn on illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-55

Adjusting Hand Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-57

Button Operation Tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-59

To turn the button operation tone on and off . . . . . . . . . . . . . . . . . . . . . . . . . E-59

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-61

E-8

Using the Stopwatch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-46

To enter the Stopwatch Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-46

To perform an elapsed time operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-47

To pause at a split time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-47

To measure two ﬁ nishes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-47

Countdown Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-49

To enter the Countdown Timer Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-49

To conﬁ gure the countdown timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-50

To perform a countdown timer operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-51

To stop the alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-51

Main Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .E-63

Speciﬁ cations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-64

E-5

E-7

E-9

Operation Guide 5381

Mode Reference Guide

The mode you should select depends on what you want to do.

To do this: Enter this mode: See:

• View the current date in the Home City

• Conﬁ gure Home City and daylight saving time (DST)

settings

• Conﬁ gure time and date settings

• View the current tide level

Take temperature readings Thermometer Mode E-25

View tide changes over the next 12 hours Tide Change Mode E-33

Count objects Counter Mode E-41

View tide level and moon age for a speciﬁ ed date and time

View the current time in one of 48 cities (31 time zones) around the globe

E-10

Selecting a Mode

• Press C to cycle between the modes as shown below.

• To return to the Timekeeping Mode from any other mode, hold down C for about

two seconds.

• In any mode (except a setting mode), press B to illuminate the display.

Thermometer

Mode

* The mode that appears ﬁ rst is the one that was selected when you last used the Thermometer

or Tide Change mode.

E-12

General Functions (All Modes)

The functions and operations described in this section can be used in all of the modes.

• Auto Return Features

The watch will automatically return to the Timekeeping Mode if you do not perform any operation for a certain amount of time, as described below.

Thermometer, Alarm, Tide/Moon

Time or other setting mode (information ﬂ ashing on the display)

Tide Change After the tide change indication process is complete

• Scrolling

The B and D buttons are used on the setting mode to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

E-14

Mode Approximate Elapsed Time

Tide Change

Mode

2 to 3 minutes

Timekeeping Mode E-17

Tide/Moon Mode E-35

World Time Mode E-42

Timekeeping Mode

To do this: Enter this mode: See:

Use the stopwatch to measure elapsed time Stopwatch Mode E-46

Use the countdown timer Countdown Timer Mode E-49

Set an alarm time Alarm Mode E-52

Counter Mode Tide/Moon Mode

Countdown Timer

Alarm Mode

Moving the Hands Out of the Way for Better Viewing

You can use the procedure below to temporarily move the hour and minute hands out of the way to better view what is on the display.

1. While holding down B, press C.

• This will cause the hour and minute hands to move to a location where they do

not block your view of the tide indicator and/or digital display.

Example: When the current time is 8:20

Flashes while the hands are moved out of the way.

Mode

World Time Mode

C C

Stopwatch Mode

CCC

E-11

E-13

E-15

2. Holding down B again as you press C will cause the hands to return to their

normal positions (normal timekeeping).

Note

• This operation can be performed in any mode. In the case of a setting mode

(setting ﬂ ashing on the screen), the hands will move out of the way automatically, even if you do not perform the above operation.

• Watch button functions are the same regardless of whether the hands are move

out of the way or at their normal positions.

• Changing to another mode will cause the hands to move back to their normal

positions.

• The hands also will move back to their normal positions automatically if no

operation is performed for about one hour.

E-16

Conﬁ guring Home City Settings

There are two Home City settings: actually selecting the Home City, and selecting either standard time or daylight saving time (DST).

To conﬁ gure Home City settings

1. In the Timekeeping Mode, hold down A until ADJ

appears.

• This indicates the city code setting mode.

• The hour and minute hands automatically move out of

the way at this time (page E-15).

2. Press D (East) and B (West) to select the city code

you want to use as your Home City.

City Code

E-18

• Keep pressing D or B until the city code you want

to select as your Home City appears on the display.

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

Table” at the back of this manual.

Timekeeping

Minutes

Hour

Month-Day

Tide indicator (Page E-32)

3. After the setting is the way you want, press A to return to the Timekeeping

Mode.

Note

• After you specify a city code, the watch will use UTC* offsets in the World Time

Mode to calculate the current time for other time zones based on the current time in your Home City.

* Coordinated Universal Time, the world-wide scientiﬁ c standard of timekeeping.

The reference point for UTC is Greenwich, England.

Use the Timekeeping Mode to set and view the current time and date.

• Each press of A cycles the digital display contents as

shown below.

Month-Day Day of the Week Seconds Hour : Minutes

A A A

PM indicator

E-17

E-19

Operation Guide 5381

To change the Daylight Saving Time (summer time) setting

DST indicator

1. In the Timekeeping Mode, hold down A until ADJ

appears.

• This indicates the city code setting mode.

• The hour and minute hands automatically move out of

the way at this time (page E-15).

2. Press C to display the DST setting mode.

3. Press D to toggle between Daylight Saving Time (ON)

and Standard Time (OFF).

• Note that you cannot switch between daylight saving

time and standard time while UTC is selected as your Home City.

4. After the setting is the way you want, press A to

return to the Timekeeping Mode.

• The DST indicator appears to indicate that Daylight

Saving Time is turned on.

E-20

2. Press C to move the ﬂ ashing in the sequence shown below to select the other

settings.

City Code

(page E-18)

Button Operation Tone On/Off

E-22

Note

• Resetting the seconds to 00 while the current count is in the range of 30 to 59

causes the minutes to be increased by 1.

• The watch’s built-in full automatic calendar makes allowances for different month

lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced.

• The day of the week changes automatically when the date changes.

E-24

Illumination Duration

(page E-55)

(page E-59)

DST

(page E-20)

12/24-Hour Format

Day

Month

Seconds

Hour

Minutes

Year

Adjusting the Digital Time and Date Settings

Use the procedure below to adjust the digital time and date settings.

To conﬁ gure the digital time and date settings

3. When the timekeeping setting you want to change is ﬂ ashing, use D and/or B

to change it as described below.

Screen To do this: Do this:

1. In the Timekeeping Mode, hold down A until ADJ

appears.

• This indicates the city code setting mode.

• The hour and minute hands automatically move out of

the way at this time (page E-15).

Toggle between 12-hour (12H) and 24-hour (24H) timekeeping

Reset the seconds to 00

Change the hour or minute

Change the year

Change the month or day

Press D.

Use D (+) and B (–).

4. Press A to exit the setting mode.

Thermometer

This watch uses a temperature sensor to take temperature readings.

• You can select either Celsius (°C) or Fahrenheit (°F) as the temperature

measurement unit (page E-26).

To take a temperature reading

Temperature

1. In the Timekeeping Mode, press D. This will enter the

Thermometer Mode, which is indicated by TEMP on the display.

• If TEMP does not appear when you press D, press

it again (page E-12).

• The temperature reading will appear about one

second after TEMP.

• The reading is updated at ﬁ ve-second intervals for two

to three minutes. After that, the watch automatically returns to the Timekeeping Mode.

E-21

E-23

E-25

Measurement unit: 0.1°C (or 0.2°F) Measurement range*: –10.0 to 60.0°C (or 14.0 to 140.0°F) * - -.- is displayed in place of the temperature when reading is outside the allowable

range.

2. Press C to return to the Timekeeping Mode.

To switch a temperature reading unit between Celsius (°C) and Fahrenheit (°F)

1. Enter the Thermometer Mode (page E-12).

2. Hold down A for at least two seconds until the temperature value disappears

from the display.

• When you release A the temperature value will start to ﬂ ash.

• The hour and minute hands automatically move out of the way at this time (page

E-15).

E-26

Correcting the Temperature Reading

The temperature sensor of this watch is adjusted at the factory and so further adjustment is not required by you. However, if you notice that the readings produced by the watch are different from readings produced by another instrument, you can use the procedure in this section to make corrections. You also can use this procedure to clear a correction.

Important!

• The watch will not be able to produce correct temperature readings if you make a

mistake during the correction procedure. Check to make sure that the value you use for correction produces correct temperature readings.

• Before performing the following procedure, remove the watch from your wrist and

leave it for about 20 or 30 minutes to allow the case temperature to become the same as the air temperature.

E-28

3. Press C.

• This will cause the current measurement

unit to ﬂ ash.

4. Use D to select the measurement unit you

want.

5. Press A to return to the Thermometer Mode.

Important!

• When TYO (TOKYO) is selected as the Home City, the temperature unit is set

automatically to Celsius (°C). These settings cannot be changed.

1. Enter the Thermometer Mode (page E-12).

2. Hold down A for at least two seconds until the temperature

value disappears from the display.

• When you release A the temperature value will start to ﬂ ash.

• The hour and minute hands automatically move out of the way at

this time (page E-15).

3. Use D (+) and B (–) to calibrate the temperature value.

Calibration unit: 0.1°C (or 0.2°F) Calibration range: –10.0 to 60.0°C (or 14.0 to 140.0°F)

Important!

• To cancel a temperature reading correction setting, hold down D and B at the

same time. The watch will beep.

4. Press A to return to the Thermometer Mode.

E-27

E-29

+ 4 hidden pages