Casio 3281 User Manual

MO1104-EA

Operation Guide 3261 3281

ENGLISH

Congratulations upon your selection of this CASIO watch.

E-1

• 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.

• The Moon phase indicator that appears on the display of this watch is not

intended for navigation purposes. Always use proper instruments and resources to obtain data for navigation purposes.

• When engaging in mountain climbing or other activities in which losing your

way can create a dangerous or life-threatening situation, always use a second compass to confirm direction readings.

• 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 this product or its malfunction.

E-2

Warning !

Things to check before using the watch

1. Check the battery power level.

Is “H” or “M” displayed for the battery power indicator (page E-14)?

Does any one of the following conditions exist?

• Battery power indicator shows “L” and “

displayed in the upper right corner of the screen.

CHG

• “

” is displayed in the upper right corner of the screen.

• The face is blank.

Power is low. Charge the watch by placing it in a location where it is exposed to light. For details, see “Charging the Watch” (page E-12).

E-4

NO YES

YES

LOW

” is

Battery power indicator

The watch is charged sufficiently. For details about charging, see “Charging the Watch” (page E-12).

Go to step 2.

Contents

E-3 About This Manual

E-4 Things to check before using the watch

E-12 Charging the Watch

E-19 To recover from the sleep state E-20 To turn Power Saving on and off

E-21 Mode Reference Guide

E-25 Timekeeping

E-26 Configuring Home City Settings

E-26 To configure Home City settings E-28 To change the Daylight Saving Time (summer time) setting

About This Manual

• Depending on the model of your watch, display text appears either as dark figures

on a light background (Module 3261), or light figures on a dark background (Module 3281). All of the illustrations in this manual show Module 3261.

• 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.

Module 3261 Module 3281

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

Use the procedure under “To configure Home City settings” (page E-26) to configure your Home City and daylight saving time settings.

Important!

World Time Mode data depend on correct Home City, time, and date settings in the Timekeeping Mode. Make sure you configure these settings correctly.

3. Set the current time.

• To set the time manually

See “Configuring Current Time and Date Settings” (page E-29).

The watch is now ready for use.

E-29 Configuring Current Time and Date Settings

E-29 To change the current time and date settings

E-33 Digital Compass

E-34 To take a digital compass reading E-40 To perform magnetic declination correction E-42 To perform bidirectional calibration E-43 To perform northerly calibration E-46 To store a direction angle reading in Bearing Memory E-48 To set a map and find your current location E-50 To find the bearing to an objective E-52 To determine the direction angle to an objective on a map and head in

that direction

E-3

E-5

E-6

E-57 Thermometer

E-57 To enter and exit the Digital Compass/Thermometer Mode E-59 To calibrate the temperature sensor

E-61 Specifying Temperature Unit

E-61 To specify temperature unit

E-63 Temperature Reading Precautions

E-64 Using the Moon Data

E-64 To enter the Moon Data Mode E-67 To reverse the displayed Moon phase

E-71 Checking the Current Time in a Different Time Zone

E-71 To enter the World Time Mode E-72 To view the time in another time zone E-72 To specify standard time or daylight saving time (DST) for a city

E-8

E-74 Using the Stopwatch

E-74 To enter the Stopwatch Mode E-74 To perform an elapsed time operation E-75 To pause at a split time E-75 To measure two finishes

E-77 Using the Countdown Timer

E-77 To enter the Countdown Timer Mode E-78 To specify the countdown start time E-79 To perform a countdown timer operation E-79 To stop the alarm

E-7

E-9

Operation Guide 3261 3281

E-80 Using the Alarm

E-80 To enter the Alarm Mode E-81 To set an alarm time E-82 To test the alarm E-82 To turn an alarm and the Hourly Time Signal on and off E-83 To stop the alarm

E-84 Illumination

E-84 To turn on illumination manually E-85 To change the illumination duration E-88 To turn the auto light switch on and off

E-91 Graphic Area

E-92 Button Operation Tone

E-93 To turn the button operation tone on and off

E-10

Charging the Watch

The face of the watch is a solar cell that generates power from light. The generated power charges a built-in rechargeable battery, which powers watch operations. The watch charges whenever it is exposed to light.

Charging Guide

Whenever you are not wearing the watch, leave it in a location where it is exposed to light.

• Best charging performance

is achieved by exposing the watch to the strongest light available.

E-12

Power Levels

You can get an idea of the watch’s power level by observing the battery power indicator on the display.

Battery power

Battery power indicator

indicator

E-14

Battery Power

Level

Indicator

(H)

(M)

(L)

(C)

5 All functions disabled.

When wearing the watch, make sure that its face is not blocked from light by the sleeve of your clothing.

• The watch may enter a

sleep state (page E-18) if its face is blocked by your sleeve even only partially.

Function Status

All functions enabled.

Illumination, beeper, and sensor operation disabled.

Except for the indicator, all functions and display indicators disabled.

CHG

(charge)

E-94 Troubleshooting

E-99 Specifications

E-11

Warning! Leaving the watch in bright light for charging can cause it to become quite hot. Take care when handling the watch to avoid burn injury. The watch can become particularly hot when exposed to the following conditions for long periods.

• On the dashboard of a car parked in direct sunlight

• Too close to an incandescent lamp

• Under direct sunlight

Important!

• Allowing the watch to become very hot can cause its liquid crystal display to black

out. The appearance of the LCD should become normal again when the watch returns to a lower temperature.

• Turn on the watch’s Power Saving function (page E-18) and keep it in an area

normally exposed to bright light when storing it for long periods. This helps to ensure that power does not run down.

• Storing the watch for long periods in an area where there is no light or wearing it in

such a way that it is blocked from exposure to light can cause power to run down. Expose the watch to bright light whenever possible.

E-13

• The flashing

and that exposure to bright light for charging is required as soon as possible.

• At Level 4 or Level 5, all functions are disabled and settings return to their initial

factory defaults. Once the battery reaches Level 2 (M) after falling to Level 4 or Level 5, reconfigure the current time, date, and other settings.

• If charging starts from Level 5,

is reached. Note, however, that watch functions are not restored at this time. Leave the watch exposed to sufficiently strong light until the battery level reaches Level 2 or Level 1 before using it.

• Leaving the watch exposed to direct sunlight or some other very strong light source

can cause the battery power indicator to show a reading temporarily that is higher than the actual battery level. The correct battery level should be indicated after a few minutes.

• All data stored in memory is deleted, and the current time and all other settings

return to their initial factory defaults whenever battery power drops to Level 4 or Level 5, and when you have the battery replaced.

LOW

indicator at Level 3 (L) tells you that battery power is very low,

CHG

will start flashing on the display when Level 4

E-15

Power Recovery Mode

• Performing multiple sensor, illumination, or beeper operations during a short period

may cause all of the battery power indicators (H,M, and L) to start flashing on the display. This indicates that the watch is in the power recovery mode. Illumination, alarm, countdown timer alarm, hourly time signal, and sensor operations will be disabled until battery power recovers.

• Battery power will recover in about 15 minutes. At this time, the battery power

indicators (H,M,L) will stop flashing. This indicates that the functions listed above are enabled again.

• If all of the battery power indicators (H,M,L) are flashing and the

indicator also is flashing, it means the battery level is very low. Expose the watch to bright light as soon as possible.

• Even if battery power is at Level 1 (H) or Level 2 (M), the Digital Compass/

Thermometer Mode sensor may be disabled if there is not enough voltage available to power it sufficiently. This is indicated when all of the battery power indicators (H,

M,L

) are flashing.

• Frequent flashing of all of the battery power indicators (H,M,L) probably means

that remaining battery power is low. Leave the watch in bright light to allow it to charge.

E-16

• The above exposure times all are for reference only. Actual exposure times depend

on lighting conditions.

• For details about the operating time and daily operating conditions, see the “Power

Supply” section of the Specifications (page E-101).

Power Saving

When turned on, Power Saving enters a sleep state automatically whenever the watch is left for a certain period in an area where it is dark. The table below shows how watch functions are affected by Power Saving.

• There actually are two sleep state levels: “display sleep” and “function sleep”.

Elapsed Time in Dark Display Operation

60 to 70 minutes (display sleep)

6 or 7 days (function sleep)

E-18

Blank, with PS flashing

Blank, with PS not flashing

Display is off, but all functions are enabled.

All functions are disabled, but timekeeping is maintained.

CHG

(charge)

Charging Times

Exposure Level (Brightness)

Outdoor sunlight (50,000 lux)

Sunlight through a window (10,000 lux)

Daylight through a window on a cloudy day (5,000 lux)

Indoor fluorescent lighting (500 lux)

*1 Approximate amount of exposure time required each day to generate enough

power for normal daily operation.

*2 Approximate amount of exposure time (in hours) required to take power from one

level to the next.

• The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is

already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep state.

• The watch will not enter a sleep state while it is in the Stopwatch Mode or

Countdown Timer Mode.

To recover from the sleep state

Move the watch to a well-lit area, press any button, or angle the watch towards your face for reading (page E-86).

Daily

Operation

Level 5 Level 4 Level 3 Level 2 Level 1

5 min. 2 hours 16 hours 5 hours

24 min. 6 hours 79 hours 21 hours

48 min. 12 hours

8 hours 168 hours – – – – – –

Level Change *2

159 hours

43 hours

E-17

E-19

Operation Guide 3261 3281

To turn Power Saving on and off

Power saving

Power saving on indicator

on indicator

E-20

Selecting a Mode

World Time Mode

Stopwatch Mode

E-22

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 returns to the Timekeeping Mode automatically if you do not perform any

button operation for two or three minutes in the Alarm, or Moon Data Mode.

• If you leave a screen with flashing digits on the display for two or three minutes

without performing any operation, the watch exits the setting screen automatically.

Initial Screens

When you enter the World Time or Alarm Mode, the data you were viewing when you last exited the mode appears first.

Scrolling

TheE and B buttons are used on the setting screen 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.

1. In the Timekeeping Mode, hold down A until starts to flash and the city name starts to scroll on the display.

• This is the setting screen.

2. Use D to display the Power Saving On/Off screen shown nearby.

3. Press E to toggle Power Saving on (On) and off (

4. Press A to exit the setting screen.

• The Power Sav ing on indicato r (PS) is on the display

in all modes w hile Power Sav ing is turned o n.

Moon Data Mode

Countdown Timer

Mode

Timekeeping Mode

Alarm Mode

SET

OFF

Mode Reference Guide

Your watch has 7 “modes”. 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

• Configure Home City and daylight saving time (DST) settings

• Configure time and date settings

•

Determine your current bearing or the direction from your current location to a destination as a direction indicator and angle value

• Determine your current location using the watch and a map

• View the temperature at your current location

View the current time in one of 48 cities (31 time zones) around the globe Use the stopwatch to measure elapsed time Stopwatch Mode E-74 Use the countdown timer Set an alarm time Alarm Mode E-80

• The illustration below shows which buttons you need to press to navigate between

modes.

• Press D to change from mode to mode.

• Hold down D for about two seconds to return to the Timekeeping Mode from any

other mode.

• In any mode, press C to enter the Digital Compass/Thermometer Mode. Press

in the Digital Compass/Thermometer Mode to return to the mode you entered from.

• In any mode (except when a setting screen is on the display), press B to illuminate

the display.

Press

Digital Compass/

Thermometer Mode

Timekeeping Mode E-25

Digital Compass/ Thermometer Mode

World Time Mode E-71

Countdown Timer Mode

E-33

E-57

E-77

E-21

E-23

Timekeeping

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

• Press A to toggle between the day of the week and date (Date screen), and the

currently selected World Time (Dual Time).

Date Screen Dual Time Screen

Day of week

PM indicator

Month – Day

Hour : Minutes Seconds

Dual time

E-24

Configuring Home City Settings

City name

Hour : Minutes

PM indicator

E-26

To change the Daylight Saving Time (summer time) setting

E-28

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 starts to flash and the city name starts to scroll on the

Seconds

display.

• This is the setting screen.

• The watch will exi t the setti ng mode autom atically if

you do not per form any op eration for a bout two o r three minutes.

• For detail s about cit y names, se e the “Cit y Code

Table” at the back of thi s manual.

1. In the Timekeeping Mode, hold down A until starts to flash and the city name starts to scroll on the display.

• This is the setting screen.

2. Press D to display the DST setting screen.

3. Use A to toggle the DST settings between

4. After all the settings are the way you want, press A to return to the Timekeeping Mode.

• The DST indicator ap pears to indic ate that Daylight

Saving Tim e is turned on .

OFF

SET

and

2. Press E (East) and B (West) to select the city name you want to use as your Home City.

• Keep pressin g E or B until the cit y name you wan t to select as you r Home

City appears on the display.

3. Press D to display the DST setting screen.

4. Use A to toggle the DST settings between

• Note that you c annot switc h between s tandard tim e and daylight s aving time

(DST) w hile UTC is sel ected as your H ome Cit y.

5. After all the settings are the way you want, press A to return to the Timekeeping Mode.

• The DST indicator a ppears to indic ate that Dayligh t Saving Tim e is turned on.

Note

• After you sp ecify a cit y name, the wa tch will use UTC * offset s in the World Ti me

Mode to calcu late the curren t time for oth er time zone s based on the cu rrent time in your H ome Cit y.

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

The reference point for UTC is Greenwich, England.

OFF

and On.

Configuring Current Time and Date Settings

You can use the procedure below to adjust the Timekeeping Mode time and date settings if they are off.

To change the current time and date settings

City name

Hour : Minutes

PM indicator

1. In the Timekeeping Mode, hold down A until starts to flash and the city name starts to scroll on the display.

• This is the setting screen.

2. Use E and B to select the city name you want.

• Select you r Home Cit y name befo re changing an y

other setting.

• For full info rmation o n city nam es, see the “ City

Seconds

Code Table” at the bac k of this manu al.

E-25

E-27

SET

E-29

Operation Guide 3261 3281

3. Press D to move the flashing in the sequence shown below to select the other settings.

City Name

Thermometer unit

DST

Power Saving

12/24-Hour Format

Seconds Minutes

Illumination Duration

Hour

Button Operation Tone On/Off

Year

Day Month

• The follow ing steps expla in how to conf igure timeke eping set tings only.

4. When the timekeeping setting you want to change is flashing, use E and/or B to change it as described below.

Screen To do this: Do this:

Change the city name

Toggle between Daylight Saving Time (On) and Standard Time (

OFF

UseE (East) and

(West).

PressE.

E-30

• While 12-ho ur format is s elected for t imekeepin g, a P (PM) indicator will appear

for times fro m noon to 11:59 p.m. No ind icator appe ars for time s from midnig ht to 11:59 a.m. With 24- hour forma t, time is disp layed from 0:0 0 to 23:59, w ithout any P (PM) indicator.

• The watch’s built- in full autom atic calenda r makes allowa nces for dif ferent

month leng ths and leap ye ars. Once yo u set the date, th ere should be n o reason to chan ge it except afte r you have the watch’s recha rgeable bat tery replaced or af ter power dro ps to Level 5 (page E-14).

E-32

To take a digital compass reading

Temperature

North

North pointer

pointer

Angle value (in degrees)

E-34

12 o’clock

12 o’clock position

position

NNW

NW W

270

WSW

SSW

ESE

180

1. Place the watch on a flat surface. If you are wearing the watch, make sure that your wrist is horizontal (in

Direction

Direction indicator

indicator

NNE

relation to the horizon).

2. Point the 12 o’clock position of the watch in the direction you want to check.

3. Press C to enter the Digital Compass/Thermometer Mode and take a digital compass reading.

• COMP will appear on th e display to indic ate that a

digital co mpass operat ion is in prog ress.

• See “Dig ital Comp ass Reading s” on page E- 35 for

informati on about wh at appears o n the display.

Note

• If a value appea rs to the right of t he direction

indicator, it mea ns that the bea ring memo ry (page E-45) s creen is displ ayed. If this happ ens, press

to exit the bear ing memor y screen.

Screen To do this: Do this:

Toggle between 12-hour (

24H

(

) timekeeping.

Reset the seconds to

Change the hour or minutes

Change the year, month, or day

12H

) and 24-hour

PressE.

UseE (+) and (–).

5. Press A to exit the setting screen.

Note

• For inform ation abo ut selectin g a Home Cit y and confi guring the D ST setti ng,

see “Conf iguring Ho me City S ettings” ( page E-26).

E-31

Digital Compass

A built-in bearing sensor detects magnetic north at regular intervals and indicates one of 16 directions on the display.

• The watch also takes temperature readings in the Digital Compass/Thermometer

Mode. For more information, see “Thermometer” (page E-57).

E-33

4. After you are finished using the digital compass, press D to return to the mode you

entered the Digital Compass/Thermometer Mode from.

Digital Compass Readings

• When you press Cto start digital compass measurement,

the display initially to indicate that a digital compass operation is in progress.

• About two seconds after you start a digital compass measurement operation, letters

on the display will indicate the direction that the 12 o’clock position of the watch is pointing. Four pointers that indicate magnetic north, south, east, and west also will appear.

• After the first reading is obtained, the watch will continue to take digital compass

readings automatically each second for up to 20 seconds. After that, measurement will stop automatically.

• The direction indicator and angle value will show

compass readings are complete.

• The auto light switch is disabled during the 20 seconds that digital compass

readings are being taken.

COMP

- - -

to indicate that digital

will appear on

E-35

• The following table shows the meanings of each of the direction abbreviations that

appear on the display.

Direction Meaning Direction Meaning Direction Meaning Direction Meaning

North

East

South

West

• The margin of error for the angle value and the direction indicator is ±11 degrees

while the watch is horizontal (in relation to the horizon). If the indicated direction is northwest (NW) and 315 degrees, for example, the actual direction can be anywhere from 304 to 326 degrees.

NNE

ESE

SSW

WNW

North-

northeast

East-

southeast

South-

southwest

West-

northwest

Northeast

Southeast

Southwest

Northwest

ENE

SSE

WSW

NNW

East-

northeast

South-

southeast

West-

southwest

North-

northwest

E-36

Magnetic Declination Correction

•

With magnetic declination correction, you input a magnetic declination angle (difference between magnetic north and true north), which allows the watch to indicate true north. You can perform this procedure when the magnetic declination angle is indicated on the map you are using. Note that you can input the declination angle in whole degree units only, so you may need to round off the value specified on the map. If your map indicates the declination angle as 7.4°, you should input 7°. In the case of 7.6° input 8°, for 7.5° you can input 7° or 8°.

Bidirectional Calibration and Northerly Calibration

•

Bidirectional calibration and northerly calibration calibrate the accuracy of the bearing sensor in relation to magnetic north. Use bidirectional calibration when you want to take readings within an area exposed to magnetic force. This type of calibration should be used if the watch becomes magnetized for any reason. With northerly calibration, you “teach” the watch which way is north (which you have to determine with another compass or some other means).

E-38

• Note that taking a measurement while the watch is not horizontal (in relation to the

horizon) can result in large measurement error.

• You can calibrate the bearing sensor if you suspect the direction reading is

incorrect.

• Any ongoing direction measurement operation is paused temporarily while the

watch is performing an alert operation (daily alarm, Hourly Time Signal, countdown timer alarm) or while illumination is turned on (by pressing B). The measurement operation resumes for its remaining duration after the operation that caused it to pause is finished.

• See “Digital Compass Precautions” (page E-54) for important information about

taking direction readings.

Calibrating the Bearing Sensor

You should calibrate the bearing sensor whenever you feel that the direction readings being produced by the watch are off. There are three different calibration methods available: magnetic declination correction, bidirectional calibration, and northerly calibration.

E-37

Important!

The more correctly you perform bidirectional calibration, the better the accuracy of the bearing sensor readouts. You should perform bidirectional calibration whenever you change environments where you use the bearing sensor, and whenever you feel that the bearing sensor is producing incorrect readings.

E-39

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