Handleiding Casio 5325 (pagina 5 van 9) (Engels)

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Operation Guide 5325

E-36

Calibrating Direction Readings

You can use the information in this section to calibrate direction readings, which helps to improve digital

compass accuracy.

Direction Reading Calibration Methods

Important!

 To ensure correct direction readings by this watch, be sure to perform bidirectional calibration before

using it. The watch may produce incorrect direction readings if you do not perform bidirectional

calibration.

 Keep the watch away from audio speakers, magnetic necklace, cell phone, and other devices that

generate strong magnetism. Exposure to strong magnetism can magnetize the watch and cause

incorrect direction readings. If incorrect readings continue even after you perform bidirectional

calibration, it could mean that your watch has been magnetized. If this happens, contact your original

retailer or an authorized CASIO Service Center.

Bidirectional Calibration

 Use this method when using the watch to take readings in an area where magnetic force is present, or

if you notice that the readings produced by the watch are different from another compass.

Northerly Calibration

 Use this method to calibrate the watch to detect true north (when it is known by you).

E-32

Taking Direction Readings

The watch has a magnetic sensor that makes it possible to take digital compass readings. You can use

the digital compass to ﬁ nd the direction to a speciﬁ c objective and to determine your current position.

 See “Magnetic North and True North” (page E-40) for information about the two types of north. For

information about maximizing digital compass accuracy, see “Calibrating Direction Readings” (page E-36)

and “Digital Compass Precautions” (page E-40).

Hand Indicators

z Hour Hand

x Second Hand: Points to magnetic north.

c Minute Hand

b Lower Dial Hand: Points to the day of the week.



E-33

To take a direction reading

1. Point the 12 o’clock position of the watch in the direction you want to read.

2. In the Timekeeping Mode, keep the watch horizontal as you press A.

 The x

Second Hand will move to 0 and the direction reading operation will

start. After about two seconds, the x

Second Hand will move to indicate

north.

Note

 If the x Second Hand is indicating the wrong direction, it could mean that

the hand is out of position. Use the procedure under “To adjust home

positions” (page E-56) to correct the hand position.

 The x

Second Hand indicates magnetic north.

 The x

Second Hand will continue to move for about 20 seconds after

you start the digital compass operation as it adjusts its magnetic north

reading. After that, the hand will stop at the ﬁ nal reading.

 To take another direction reading, press A again.

 To stop an ongoing direction reading operation and return to the

Timekeeping Mode, press C.

 If you do not perform any operation, the watch will return to normal

timekeeping after about one or two minutes.



E-34

3. Press C to return to the Timekeeping Mode.

Note

 If the z

Hour Hand stops at 6 o’clock during a direction reading, it could mean that the watch

has detected abnormal magnetism. For more information, see “Abnormal magnetism detection is

indicated.” (page E-59).

E-35

Example: Determining your current position and your

objective on a map

Having an idea of your current location and the direction to your

destination is important when mountain climbing or hiking. In

this example, we show you how to plot directions on a map and

determine your current location using direction measurements

taken by the watch.

1. In the Timekeeping Mode, press A.

2. Rotate the map (without moving the watch) until north on

the map is aligned with north as indicated by the watch’s

second hand.

Depending on how the watch is set up, it may be indicating

magnetic north or true north.

Magnetic north: Indicates north in accordance with the

Earth’s magnetic ﬁ eld.

True north: Indicates the direction to the North Pole.

 For information about setting the watch up to indicate

magnetic north or true north, see “Magnetic North and True

North” (page E-40).

3. Determine your location and destination by checking the map

and the geographic contours around you.



North indicated on the map

North indicated by north pointer

E-37

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.

 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 ﬁ eld, for example,

calibrate in an open ﬁ eld.

To perform bidirectional calibration

1. In the Digital Compass Mode, pull out the crown.

 The x

Second Hand and c Minute Hand will move to 12 o’clock, and

the z

Hour Hand will move to 6 o’clock.

2. Press A to start calibration of Point 1.

 After about seven seconds, the x

Second Hand will move to YES (Y) if

Point 1 calibration was successful or to NO (N) if it was not successful.

 If the x

Second Hand is pointing at NO (N) (unsuccessful), press A

to perform Point 1 calibration again.

 If the x

Second Hand is pointing at YES (Y) (successful), it will move

to 6 o’clock after about two seconds.



E-38

3. Rotate the watch 180 degrees.

4. Press A to start calibration of Point 2.

 After about seven seconds, the x

Second Hand will move to YES (Y) if

Point 2 calibration was successful or to NO (N) if it was not successful.

 If the x

Second Hand is pointing at NO (N) (unsuccessful), press A to

return to Point 1 calibration.

5. After calibration is complete, push the crown back in and then lock it.

 This will start a magnetic north reading operation.

 Press C to return to the Timekeeping Mode.

To perform northerly calibration

Important!

 If you want to perform both northerly and bidirectional calibration, perform bidirectional calibration ﬁ rst,

and then perform northerly calibration. This is necessary because bidirectional calibration cancels any

existing northerly calibration setting.



E-39

1. In the Digital Compass Mode, pull out the crown.

 The x

Second Hand and c Minute Hand will move to 12 o’clock, and

the z

Hour Hand will move to 6 o’clock.

2. Press C. The z

Hour Hand will move to 12 o’clock.

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 calibration.

 After about seven seconds, the x

Second Hand will move to YES (Y) if

calibration was successful or to NO (N) if it was not successful.

 If the x

Second Hand is pointing at NO (N) (unsuccessful), press A

to perform calibration again.

5. After calibration is complete, push the crown back in and then lock it.

 This will start a magnetic north reading operation.

 Press C to return to the Timekeeping Mode.



+@B



YES (Y)

NO (N)

Casio 5325 Handleiding

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