Manual Casio 2894 (page 11 of 12) (English)

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Operation Guide 2894

Important!

• If you want to perform both bidirectional and northerly calibration, be sure

to perform bidirectional calibration first, and then perform northerly

calibration. This is necessary because bidirectional calibration cancels any

previously set northerly calibration setting.

• 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.

Precautions about bidirectional calibration

• You can use any two opposing directions for bidirectional calibration. You

must, however, make sure that they are 180 degrees opposite each other.

Remember that if you perform the procedure incorrectly, you will get wrong

bearing sensor readings.

• Make sure that you do not move the watch while calibration of either

direction is in progress.

• You should perform bidirectional calibration in an environment that is the

same as that where you plan to be taking direction readings. If you plan to

take direction readings in an open field, for example, calibrate in an open

field.

To perform bidirectional calibration

1. Press A to enter the Digital Compass Mode.

2. Hold down E until

x1x appears on the

display, which indicates the setting screen.

• At this time, the magnetic north pointer

flashes at the 12 o’clock position to indicate

that the watch is ready to calibrate the first

direction.

3. Place the watch on a level surface facing any direction you want, and

press A to calibrate the first direction.

•

xxx is shown on the display while calibration is being performed.

When calibration of is successful, the display will show

OK and x2x,

and the magnetic north pointer flashes at the 6 o’clock position. This

means that the watch is ready for calibration of the second direction.

4. Rotate the watch 180 degrees.

5. Press A again to calibrate the second direction.

• xxx is shown on the display while calibration is being performed. When

calibration is successful, the display will show

OK and the Digital Compass

Mode (showing the angle value) screen.

• If

xxx appears and then changes to

ERR

(error) on the calibration

screen, it means that there is something wrong with the sensor. When

ERR

disappears after about one second, try performing the calibration

again. If

ERR

keeps appearing, contact your original dealer or nearest

authorized CASIO distributor to have the watch checked.

To perform northerly calibration

1. While in the Digital Compass Mode, hold

down E until

x1x appears on the display,

which indicates the setting screen.

2. Press D to start the northerly calibration

procedure.

• At this time,

-N- (north) appears on the

display.

3. Place the watch on a level surface, and position it so that its 12 o’clock

position points north (as measured with another compass).

4. Press A to start the calibration operation.

•

--- is shown on the display while calibration is being performed. When

calibration is successful, the display will show

OK and the Digital Compass

Mode (with

° shown as the angle value).

• If

--- appears and then changes to

ERR

(error) on the calibration

screen, it means that there is something wrong with the sensor. When

ERR

disappears after about one second, try performing the calibration

again. If

ERR

keeps appearing, contact your original dealer or nearest

authorized CASIO distributor to have the watch checked.

Barometer and Thermometer Precautions

• The pressure sensor built into this watch measures changes in air

pressure, which you can then apply to your own weather predictions. It is

not intended for use as a precision instrument in official weather prediction

or reporting applications.

• 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.

Pressure Sensor and Temperature Sensor Calibration

The pressure sensor and temperature sensor built into the watch are

calibrated at the factory and normally require no further adjustment. If you

notice serious errors in the temperature readings produced by the watch, you

can calibrate the sensor to correct the errors.

Important!

• Incorrectly calibrating the barometric pressure sensor can result in incorrect

readings. Before performing the calibration procedure, compare the

readings produced by the watch with those of another reliable and accurate

barometer.

• 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 pressure sensor and the temperature sensor

1. Press B to enter the Barometer/

Thermometer Mode.

2. Hold down E until

SET appears in the

upper display area.

3. Release E, and wait for four or five more

seconds until either

OFF or the current

reference temperature value (if set) start to

flash. This is the setting screen.

• If you want to calibrate the barometric

pressure sensor, press D to move the

flashing to the middle display area. This is

the pressure sensor calibration screen.

• At this time,

OFF or the barometric

pressure value should be flashing on the

display.

4. Use the C (+) and A (–) buttons to set the

calibration value in the units shown below.

Temperature 0.1

C (0.2

Barometric Pressure 1 hPa (0.05inHg)

• Pressing A and C at the same time returns to the factory calibration

(

OFF).

5. Press E to return to the Barometer/Thermometer Mode screen.

To select the temperature, barometric pressure, and altitude units

1. Enter the Timekeeping Mode.

2. Hold down E until the city code starts to

flash, which indicates the setting screen.

3. Use D to select the setting screen for the unit

you want to change.

• See step 2 under “To set the time and date”

for information about how to scroll through

setting screens.

4. Press C to change the unit setting.

• Each press of C changes the selected unit

setting as shown below.

Temperature

C and

Barometric Pressure hPa and inHg

Altitude m and ft

5. After the settings are the way you want, press E to exit the setting screen.

Calibrating the Bearing Sensor

Whenever you suspect that direction readings produced by the watch are

wrong, you should calibrate it. You can use either one of two calibration

procedures:

bidirectional calibration

northerly calibration

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). You

could use this calibration procedure, for example, to set the watch to indicate

true north instead of magnetic north.

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Casio 2894 Manual

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