Casio 5381 Operation Guide
MA1402-EA © 2014 CASIO COMPUTER CO., LTD.
Operation Guide 5381
ENGLISH
Congratulations upon your selection of this CASIO watch.
E-1
Warning!
•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.
About This Manual
•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.
E-2 E-3
Things to check before using the watch Contents
1. Check the Home City and the daylight saving time (DST) setting.
Use the procedure under “To configure Home City settings” (page E-18) to configure 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.
E-4
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-3
Things to check before using the watch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-4
Mode Reference Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-10
Timekeeping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-17
Configuring 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-5
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 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
E-7
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
Main Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-63
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E-64
E-8 |
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 |
Timekeeping Mode |
E-17 |
•Confi gure time and date settings
•View the current tide level
Take temperature readings |
Thermometer Mode |
E-25 |
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View tide changes over the next 12 hours |
Tide Change Mode |
E-33 |
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Count objects |
Counter Mode |
E-41 |
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View tide level and moon age for a specifi ed date |
Tide/Moon Mode |
E-35 |
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and time |
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View the current time in one of 48 cities |
World Time Mode |
E-42 |
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(31 time zones) around the globe |
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E-10 |
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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 |
E-11
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 |
Tide Change |
Timekeeping Mode |
Mode |
Mode |
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C |
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D |
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D* 
*The mode that appears fi rst is the one that was selected when you last used the Thermometer or Tide Change mode.
Counter Mode |
Tide/Moon Mode |
World Time Mode |
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C |
C |
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Countdown Timer |
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Alarm Mode |
Mode |
Stopwatch Mode |
C |
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E-12 |
E-13 |
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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.
Mode |
Approximate Elapsed Time |
Thermometer, Alarm, Tide/Moon |
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Time or other setting mode |
2 to 3 minutes |
(information fl ashing on the display) |
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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.
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.
E-14 |
E-15 |
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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
Timekeeping
Minutes
Hour
Month-Day
Tide indicator (Page E-32)
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 |
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A |
A |
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A |
PM indicator
A
E-17
Configuring 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 configure 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 • 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.
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.
E-18 |
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.
Adjusting the Digital Time and Date Settings
Use the procedure below to adjust the digital time and date settings.
To configure the digital time and date 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).
E-20 |
E-21 |
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2.Press C to move the flashing in the sequence shown below to select the other settings.
3.When the timekeeping setting you want to change is flashing, use D and/or B to change it as described below.
City Code |
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C |
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DST |
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C |
12/24-Hour Format |
C |
Seconds |
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(page E-18) |
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(page E-20) |
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C |
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Hour |
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Illumination Duration |
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Minutes |
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Button Operation Tone On/Off |
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Day |
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Month |
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Year |
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(page E-59) |
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C |
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E-22
Screen |
To do this: |
Do this: |
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Toggle between 12-hour (12H) and 24-hour |
Press D. |
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(24H) timekeeping |
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Reset the seconds to 00 |
Press D. |
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Change the hour or minute |
Use D (+) and B (–). |
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Change the year |
Use D (+) and B (–). |
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Change the month or day |
Use D (+) and B (–). |
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4. Press A to exit the setting mode.
E-23
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.
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
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1. In the Timekeeping Mode, press D. This will enter the |
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Thermometer Mode, which is indicated by TEMP on |
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the display. |
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• If TEMP does not appear when you press D, press |
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it again (page E-12). |
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• The temperature reading will appear about one |
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second after TEMP. |
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• The reading is updated at fi ve-second intervals for two |
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to three minutes. After that, the watch automatically |
Temperature |
returns to the Timekeeping Mode. |
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E-24 E-25
Measurement unit: 0.1°C (or 0.2°F) |
3. |
Press C. |
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Measurement range*: –10.0 to 60.0°C (or 14.0 to 140.0°F) |
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D |
• This will cause the current measurement |
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* --.- is displayed in place of the temperature when reading is outside the allowable |
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unit to fl ash. |
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range. |
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4. |
Use D to select the measurement unit you |
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2. Press C to return to the Timekeeping Mode. |
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want. |
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To switch a temperature reading unit between Celsius (°C) and Fahrenheit (°F) |
5. |
Press A to return to the Thermometer Mode. |
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1. Enter the Thermometer Mode (page E-12). |
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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
Important!
•When TYO (TOKYO) is selected as the Home City, the temperature unit is set automatically to Celsius (°C). These settings cannot be changed.
E-27
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.
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-28 |
E-29 |
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