Casio 3206, MO0909-EA, QW-3135 Digital Compass Precautions, OFF, OFF, Storage, Location, Important, Calibrating the Bearing Sensor, •Magnetic Declination Correction

Operation Guide 3135 3206

• Any ongoing direction measurement operation is paused temporarily while

To perform magnetic declination correction

the watch is performing an alert operation (daily alarm, Hourly Time Signal,

countdown timer alarm) or while illumination is turned on (by pressing L).

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	Meaning
N	North	NNE	North-	NE	Northeast	ENE	East-
			northeast				northeast

E	East	ESE	East-	SE	Southeast	SSE	South-
			southeast				southeast

S	South	SSW	South-	SW	Southwest	WSW	West-
			southwest				southwest

W	West	WNW	West-	NW	Northwest	NNW	North-
			northwest				northwest

Magnetic declination angle direction

l	ll	l
l		l
l		l
l		l
l		l
	lll lll
	l		l
ll			l
ll			l
l			l
	l		l
	l		l
		lll

Magnetic declination angle value

1.In the Digital Compass Mode, hold down E for about two seconds until the magnetic declination angle and magnetic declination angle direction values start to flash on the display. This is the setting screen.

2.Use A (+) and C (–) to change the magnetic declination angle and magnetic declination angle direction settings.

•You can select a value within the range of W 90° to E 90° with these settings.

•The following explains magnetic declination angle direction settings.

OFF: No magnetic declination correction

performed. The magnetic declination angle with this setting is 0°.

•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

You should calibrate the bearing sensor whenever you feel that the direction readings being produced by the watch are off. There are three different calibration methods available: magnetic declination correction, bidirectional calibration, and northerly calibration.

•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°.

•Bidirectional Calibration and Northerly Calibration

Bidirectional calibration and northerly calibration calibrate the accuracy of the direction sensor in relation to magnetic north.

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).

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 existing 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.

E: When magnetic north is to the east (east declination)

W: When magnetic north is to the west (west declination)

•You can turn off (OFF) magnetic declination correction (which effectively makes the magnetic declination angle: 0°) by pressing A and C at the same time.

•The illustration above, for example, shows the value you should input

and the direction setting you should select when the map shows a magnetic declination of 1° West.

3.When the setting is the way you want, press E to exit the setting screen.

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

	ll ll		1. In the Digital Compass Mode, hold down E
l	ll ll		for about two seconds until the magnetic
l		l	for about two seconds until the magnetic
l		l
l		l
	ll ll

declination angle and magnetic declination angle direction values start to flash on the display. This is the setting screen.

2. Press D to display the bidirectional calibration screen.

• At this time, the 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 C to calibrate the first direction.

• xxx is shown on the display while calibration is being performed. When calibration is successful, the display will show OK and x2x, and the 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 C 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

l l l	ll		1. In the Digital Compass Mode, hold down E
l	ll
l		l	for about two seconds until the magnetic
ll l ll		l	for about two seconds until the magnetic
l

declination angle and magnetic declination angle direction values start to flash on the display. This is the setting screen.

2. Press D twice to display the northerly calibration screen.

• 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 C 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 0° 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.