Casio 3157 Owner's Manual

MO0911-EB

Operation Guide 3157

Getting Acquainted

Congratulations upon your selection of this CASIO watch. To get the most out of your purchase, be sure to read this manual carefully.

Applications

The built-in sensors of this watch measure direction and temperature. Measured values are then shown on the display. Such features make this watch useful when hiking, mountain climbing, or when engaging in other such outdoor activities.

• The measurement functions built into this watch are not intended for use in taking measurements that require professional or industrial precision. Values produced by this watch should be considered as reasonably accurate representations only.

• When engaging in mountain climbing or other activities in which losing your way can create a dangerous or life-threatening situation, always be sure to 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.

Warning!

About This Manual

(Light)

• Depending on the model of your watch, display text appears either as dark figures on a light background or light figures on a dark background. All sample displays in this manual are shown using dark figures on a light background.

• 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

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

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

• You can enter the Digital Compass/Thermometer Mode from the Timekeeping Mode by pressing D. To enter from another mode, first use C to enter the Timekeeping Mode, and then press D.

Digital Compass/

Thermometer Mode

Press D.

▲

Press C.

Timekeeping Mode

▲

Press C.

▲

Timekeeping

Month – Day

Day of week

Seconds

Hour : Minutes

To set the time and date

1. In the Timekeeping Mode, hold down A until the city code starts to flash, which

indicates the setting screen.

2. Use D and B to select the city code you want.

• Make sure you select your Home City code before changing any other setting.

• For full information on city codes, see the “City Code Table”.

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

settings.

City Code

Temperature Unit

• The following steps explain how to configure timekeeping settings only.

4. When the timekeeping setting you want to change is flashing, use D and/or B to

change it as described below.

Screen

5. Press A to exit the setting screen.

• For details about configuring temperature display settings, see “To specify the temperature display unit”.

• See “Daylight Saving Time (DST) Setting” below for details about the DST setting.

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

Read This Before You Set the Time and Date!

This watch is preset with a number of city codes, each of which represents the time zone where that city is located. When setting the time, it is important that you first select the correct city code for your Home City (the city where you normally use the watch). If your location is not included in the preset city codes, select the preset city code that is in the same time zone as your location.

• Note that all of the times for the World Time Mode city codes are displayed in accordance with the time and date settings you configure in the Timekeeping Mode.

12/24-Hour

DST

Forma t

Day

To do this:

Change the city code

Toggle between Daylight Saving Time

) and Standard Time ( ).

( Toggle between 12-hour (

24-hour ( Reset the seconds to

Change the hour or minute

Change the month or day

24H

) timekeeping.

Month

12H

Second

Year

Do this:

Use D (east) and B (west).

Press D.

) and

Press D.

Use D (+) and B (–).

Use D (+) and B (–).Change the year

Hour

Minute

World Time Mode

▲

Alarm Mode

▲

Daylight Saving Time (DST) Setting

Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time.

To toggle the Timekeeping Mode time between DST and Standard Time

On/Off status

DST indicator

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

code starts to flash, which indicates the setting screen.

2. Press C once and the DST setting screen appears.

3. Press D to toggle between Daylight Saving Time (

displayed) and Standard Time (OFF displayed).

4. Press A to exit the setting screen.

• The DST indicator appears to indicate that Daylight Saving Time is turned on.

Stopwatch Mode

▲

Countdown Timer

Mode

▲

Digital Compass/Thermometer

You can take direction readings and temperature readings in the Digital Compass/ Thermometer Mode. Direction readings are taken by the watch’s built-in magnetic bearing sensor and displayed as one of 16 directions. A temperature sensor is used for temperature readings.

• See “Digital Compass” for more information about the digital compass.

• See “Thermometer” for more information about the thermometer.

To enter and exit the Digital Compass/Thermometer Mode

12 o’clock position

Current time

During readings

About two

▲

seconds

Thermometer

The watch takes temperature readings automatically whenever you enter the Digital Compass/Thermometer Mode. In addition, you can take readings manually by performing the procedure below.

• You can calibrate the temperature sensor if you think readings are wrong for some reason.

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

1. While in the Timekeeping Mode, press D to enter the

Digital Compass/Thermometer Mode.

• The watch will start to take direction and temperature readings. After about two seconds, the direction that the 12 o’clock position of the watch is facing will be indicated and the current temperature reading will appear on the display.

• Direction readings will be taken each second for about 10 seconds, and then stop automatically.

• Temperature readings will be taken every two seconds for about 10 seconds, and then stop automatically.

• To perform direction and temperature readings for another 10 seconds, press D again.

2. Press C to return to the Timekeeping Mode.

• For information about using the digital compass, see “To take a direction reading”.

• For information about using the thermometer, see “To take a temperature reading”.

Operation Guide 3157

▲

To take a temperature reading

Temperature

Important!

• Sudden temperature changes can affect pressure sensor readings.

• Temperature measurements are affected by your body temperature (while you are

wearing the watch), direct sunlight, and moisture. To achieve a more accurate temperature measurement, remove the watch from your wrist, place it in a well ventilated location out of direct sunlight, and wipe all moisture from the case. It takes approximately 20 to 30 minutes for the case of the watch to reach the actual surrounding temperature.

Temperature Sensor Calibration

The temperature sensor built into the watch is calibrated at the factory, and normally does not need any adjustment. However, if you feel that readings being produced by the watch are not correct for some reason, you can calibrate the temperature sensor to correct them.

Important!

• Incorrectly calibrating the temperature sensor can result in incorrect readings. Carefully read the following before doing anything.

Compare the readings produced by the watch with those of another reliable and accurate thermometer. If adjustment is required, remove the watch from your wrist and wait for 20 or 30 minutes to give the temperature of the watch time to stabilize.

To calibrate the temperature sensor

Current temperature calibration value

To specify the temperature display unit

4. Use D to switch between Celsius (°C) and Fahrenheit (°F).

5. Press A to exit the setting screen.

Digital Compass

The watch takes digital compass readings automatically whenever you enter the Digital Compass/Thermometer Mode. In addition, you can take readings manually by performing the procedure below.

• See “Digital Compass Precautions” for important information about using the digital compass.

• You can calibrate the direction bearing if you think readings are wrong for some reason.

• For a digital compass practical example, see “Using the Digital Compass While Mountain Climbing or Hiking”.

To take a direction reading

Direction indicator

12 o’clock position

Angle value (in degrees)

270°

W S

180°

SSE

In the Digital Compass/Thermometer Mode, press D.

• This will display the temperature reading.

• After the first reading, the watch will continue to take

readings every two seconds for about 10 seconds.

• To perform temperature readings for another 10

seconds, press D again.

• The temperature is displayed in units of 0.1°C (or 0.2°F).

• The display range of the thermometer screen is –10.0°C

to 60.0°C (or 14.0°F to 140.0°F). The temperature display will show xxx if a temperature reading is outside the allowable range.

1. In the Digital Compass/Thermometer Mode, hold down

A until the indicator at the 12 o’clock position starts to flash.

2. Press C twice and the current temperature calibration

value will flash on the display. This is the temperature sensor calibration screen.

3. Use D (+) and B (–) to change the calibration value.

• To return the temperature sensor to its factory default

calibration (indicated by OFF on the display), press D and B at the same time.

4. To exit the calibration screen, press A.

1. Enter the Timekeeping Mode.

2. Hold down A until the city code starts to flash, which

indicates the setting screen.

3. Press C nine times until the temperature display unit

flashes on the display.

• See step 3 under “To set the time and date” for information about how to scroll through setting screens.

1. While the watch is in the Digital Compass/Thermometer Mode, place it on a flat surface, or if you are wearing

North

the watch, make sure that your wrist is horizontal (in

pointer

relation to the horizon).

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

3. Press D to start a Digital Compass measurement operation.

• After about two seconds, the direction that the 12

o’clock position of the watch is pointing appears on the display.

• A pointer on the display indicates magnetic north.

• After the first reading is obtained, the watch continues to

0°

take direction readings automatically each second, for

NNE

up to 10 seconds.

• To perform direction readings for another 10 seconds,

press D again.

ESE

90°

• The

direction reading is complete indicates that bearing sensor calibration is required due to either of the reasons described below. When this happens, perform the procedure under “Calibrating the Bearing Sensor”.

• It’s been 100 days since the last bearing sensor calibration.

• The watch’s battery was replaced.

• While the watch is taking compass readings, it displays

a direction angle and a direction indicator, all of which change dynamically when the watch is moved. After the compass operation is complete, the direction pointer disappears from the display, and the direction angle and direction indicator both show “- - -”. Use the direction indicators imprinted on the bezel to record the indicated direction. For details, see “Using the Digital Compass While Mountain Climbing or Hiking”.

appearing on the display after a

Note

• Note that taking a measurement while the watch is not horizontal (in relation to the horizon) can result in large measurement error.

• The margin of error for the angle value and the direction indicator is ±11 degrees. If the indicated direction is northwest (NW) and 315 degrees, for example, the actual direction can be anywhere from 304 to 326 degrees.

• 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.

• The following table shows the meanings of each of the direction abbreviations that appear on the display.

Direction

Meaning

Direction

Meaning

Direction

Meaning

Direction

North

East

South

West

• See “Digital Compass Precautions” for other important information about taking direction readings.

Digital Compass Precautions

This watch features a built-in magnetic bearing sensor that detects terrestrial magnetism. This means that north indicated by this watch is magnetic north, which is somewhat different from true polar north. The magnetic north pole is located in northern Canada, while the magnetic south pole is in southern Australia. Note that the difference between magnetic north and true north as measured with all magnetic compasses tends to be greater as one gets closer to either of the magnetic poles. You also should remember that some maps indicate true north (instead of magnetic north), and so you should make allowances when using such maps with this watch.

Location

• Taking a direction reading when you are near a source of strong magnetism can cause large errors in readings. Because of this, you should avoid taking direction readings while in the vicinity of the following types of objects: permanent magnets (magnetic necklaces, etc.), concentrations of metal (metal doors, lockers, etc.), high tension wires, aerial wires, household appliances (TVs, personal computers, washing machines, freezers, etc.)

• Accurate direction readings are impossible while in a train, boat, air plane, etc.

• Accurate readings also are impossible indoors, especially inside ferro-concrete

structures. This is because the metal framework of such structures picks up magnetism from appliances, etc.

Storage

• The precision of the bearing sensor may deteriorate if the watch becomes magnetized. Because of this, you should be sure to store the watch away from magnets or any other sources of strong magnetism, including: permanent magnets (magnetic necklaces, etc.) and household appliances (TVs, personal computers, washing machines, freezers, etc.)

• Whenever you suspect that the watch may have become magnetized, perform one of the calibration procedures under “Calibrating the Bearing Sensor”.

Calibrating the Bearing Sensor

If you feel that direction readings being produced by the watch are not correct for some reason, you can calibrate the bearing sensor to correct them. You can use either of two methods to calibrate the bearing sensor: bearing sensor correction or magnetic declination correction. You also need to calibrate the bearing sensor if 100 days pass without calibration, and after you have the watch’s battery replaced. The message the display to remind you to calibrate.

• Bearing Sensor Correction

With bearing sensor correction, you rotate the watch in accordance with the movement of an on-screen indicator. Doing this will recalibrate the magnetic sensor of the watch with magnetic North for the area where you are located.

• 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 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°.

NNE

ESE

SSW

WNW

North-

northeast

East-

southeast

South-

southwest

West-

northwest

Northeast

Southeast

Southwest

Northwest

ENE

SSE

WSW

NNW

will appear on

Meaning

East-

northeast

South-

southeast

West-

southwest

North-

northwest

To calibrate the bearing sensor

▲

One second

1. Remove the watch from your wrist, and position it so its back is parallel with the

ground and the 12 o’clock position is pointed away from you.

2. In the Digital Compass/Thermometer Mode, hold down A until the indicator at the

12 o’clock position starts to flash. This is the calibration screen.

3. Press D.

• The flashing indicator will move clockwise on the face of the watch with each passing second.

4. Each time the indicator moves, rotate the watch so the indicator remains pointed away from you.

5. After the flashing indicator completes two full trips around the display (and you rotate the watch twice), press C.

• This completes calibration and exits the calibration screen. The message will

appear on the display for about one second, and then a direction reading operation will be performed automatically.

Rotate the watch in accordance with the movement of the flashing indicator.

One second

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