Manual Casio 5311 - GW-A1100 (page 6 of 11) (English)

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Operation Guide 5311

E-59

4. Press A to start calibration.

x After about seven seconds, the

Second Hand will

move to Y (YES) if calibration was successful or to

N (NO) if it was not successful.

x If the

Second Hand is pointing at N (NO)

(unsuccessful), press A to perform calibration again.

5. After calibration is complete, push the crown back in

and then lock it.

x This will start a magnetic north reading operation.

x Press C to return to the Timekeeping Mode.



Y (YES)

N (NO)

E-58

To perform northerly calibration

Important!

x 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.

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

x The

Second Hand and

Minute Hand will

move to 12 o’clock, and the

Hour Hand will

move to 6 o’clock.

2. Press C. The

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).



+@B

E-57

3. Rotate the watch 180 degrees.

4. Press A to start calibration of Point 2.

x After about seven seconds, the

Second Hand will

move to Y (YES) if Point 2 calibration was successful

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

x If the

Second Hand is pointing at N (NO)

(unsuccessful), press A to return to Point 1

calibration.

5. After calibration is complete, push the crown back in

and then lock it.

x This will start a magnetic north reading operation.

x Press C to return to the Timekeeping Mode.



E-56

To perform bidirectional calibration

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

x The

Second Hand and

Minute Hand will

move to 12 o’clock, and the

Hour Hand will

move to 6 o’clock.

2. Press A to start calibration of Point 1.

x After about seven seconds, the

Second Hand

will move to Y (YES) if Point 1 calibration was

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

x If the

Second Hand is pointing at N (NO)

(unsuccessful), press A to perform Point 1

calibration again.

x If the

Second Hand is pointing at Y (YES)

(successful), it will move to 6 o’clock after about

two seconds.



E-55

Precautions about bidirectional calibration

x 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.

x Do not move the watch while calibration of either direction is in progress.

x 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.

E-54

x 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

x 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

x Use this method to calibrate the watch to detect true north (when it is known by

you).

E-53

Magnetic north: Indicates north in accordance with the Earth’s magnetic ﬁ eld.

True north: Indicates the direction to the North Pole.

x For information about setting the watch up to indicate magnetic north or true

north, see “Magnetic North and True North” (page E-60).

3. Determine your location and destination by checking the map and the geographic

contours around you.

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!

x 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.

E-52

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.



North indicated on the map

North indicated by north pointer

E-51

x The

Second Hand indicates magnetic north.

x The

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.

x To take another direction reading, press A again.

x To stop an ongoing direction reading operation and return to the Timekeeping

Mode, press C.

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

after about one or two minutes.

3. Press C to return to the Timekeeping Mode.

Note

x If the

Hour Hand stops at 6 o’clock and the

Minute Hand stops at 12 o’clock,

it could mean that the watch has detected abnormal magnetism. For more

information, see “Abnormal magnetism detection is indicated.” (page E-87).

E-50

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.

x The

Second Hand will move to 12 o’clock* and the

direction reading operation will start. After about two

seconds, the

Second Hand will move to indicate

north.

* If the

Second Hand does not point to 12 o’clock, it

could mean that the hand is out of position. Use the

procedure under “To adjust home positions” (page E-81)

to correct the hand position.



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Casio 5311 - GW-A1100 Manual

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