Bedienungsanleitung Casio 3157 (Seite 2 von 5) (Englisch)

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Operation Guide 3157

To take a temperature reading

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.

• After the temperature reading is complete, the

temperature display will show “- -. -”.

• 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.

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

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.

Current temperature

calibration value

To specify the temperature display unit

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.

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

1. While the watch is in the Digital Compass/Thermometer

Mode, place it on a flat surface, or if you are wearing

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

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

take direction readings automatically each second, for

up to 10 seconds.

• To perform direction readings for another 10 seconds,

press D again.

Direction indicator

North

pointer

12 o’clock

position

Angle value (in degrees)

0°

SSE

NNE

NNW

90°

180°

270°

• The

appearing on the display after a

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”.

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.

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

direction readings.

Direction

Meaning

Direction

Meaning

Direction

Meaning

Direction

Meaning

NNE

ESE

SSW

WNW

North-

northeast

East-

southeast

South-

southwest

West-

northwest

Northeast

Southeast

Southwest

Northwest

East-

northeast

South-

southeast

West-

southwest

North-

northwest

ENE

SSE

WSW

NNW

North

East

South

West

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

will appear on

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°.

To calibrate the bearing sensor

Rotate the watch in

accordance with the

movement of the

flashing indicator.

One

second

▲

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.

Casio 3157 Seite 2

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