Bedienungsanleitung La Crosse XG-20 (Seite 22 von 36) (Englisch)

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11.1 Compass Mode - Compass Mode

Compass Mode

- In the Compass Mode, the 1st row of the display

shows the bearing (compass points) of the

direction which the watch's pointer is pointing.

- The 2nd row of the display shows the bearing

(digital) of the direction which the watch's pointer is

pointing.

- The 3nd row of the display shows the current time: hour,

minute and second.

- The indicators around the display show the direction of

magnetic North.

-The Compass Mode will change to

the standby mode after 1 minute.

- In the standby mode, press any button except

[Light] button once to return to the Compass Mode.

Compass Mode

Magnetic Declination

current time

magnetic north

indicator

bearing direction

(digital)

bearing direction

(compass points)

What is Magnetic Declination

- The angular difference between Magnetic North Pole and

True North Pole is called magnetic declination. Its

amount (degrees and minutes) and direction (easterly and

westerly) depend on where you are.

also includes a compensation setting for

Magnetic Declination. Check 'Calibrating the

Compass' section for more details on the setting.

Magnetic Declination Information

- Most topographic maps show magnetic north pole and or

the magnetic declination information.

- This manual includes the magnetic declination for some

major cities. Check the 'Magnetic Declination at

Major Cities' section for more detail.

- For those cities whose names are not included in the list,

you may like to refer to the online magnetic

declination information at:

1.http://www.geolab.nrcan.gc.ca/geomag/e_cgrf.html

2.http://www.ngdc.noaa.gov/cgi-bin/seg/gmag/fldsnth1.pl

- Use an atlas to find your latitude and longitude before you

use the links above.

- The Magnetic North Pole is slightly

different from the True North Pole. The XG-20, like

most magnetic compasses, points to the Magnetic North

Pole. On the contrary, everything measured from a map is

related to the True North Pole.

- For serious compass user or users who intends to perform

accurate navigation, the compass must be adjusted to

compensate for magnetic declination.

XG-20

11.2 Compass Mode - Magnetic Declination

True North

Magnetic

Declination

Magnetic

Declination

Magnetic North

Magnetic Declination Compensation

- Compensate an object's bearing by subtract westerly

(W) magnetic declination or add easterly (E)

magnetic declination with the magnetic bearing.

XG-20

Example 1

-238 Westerly magnetic declination and the compass

needle points 3238.

- The bearing will be 3238 (MB) - 238 (W) = 3008 (TB).

Example 2

-228 Easterly magnetic declination and the compass

needle points 2788.

- The bearing will be 2788(M) + 228(E) = 3008 (TB).

will compensate the compass bearing

wherever the magnetic declination is either

Westerly (-ve) declination or Easterly declination (+ve)

automatically, if the user inputs the magnetic declination

angle of the city which is close to the user's current location

during the calibration.

- Check the 'Calibrating the Compass' section for more

details on the calibration.

11.3 Compass Mode - Magnetic Declination Compensation

Compensate the Bearing at a place with

Westerly (W) Magnetic Declination

Compensate the Bearing at a place with

Easterly (E) Magnetic Declination

magnetic

declination

238 W

magnetic

declination

228 E

true

bearing

3008

true

bearing

3008

magnetic

bearing

3238

magnetic

bearing

2788

true north

magnetic

north

magnetic

north

object B

point A

No. Country/Place Major City

Declination

1 Afghanistan Kabul 2-E

2 Australia Canberra 12-E

3 Austria Vienna 2-E

4 Bahrain Manama 2-E

5 Bangladesh Dhaka 0

6 Belgium Brussels 1-W

7 Brazil Brasilia 19-W

8 Canada Ottawa 14-W

9 Chile Santiago 5-E

10 Beijing 6-W

11China Hong Kong 2-W

12Costa Rica San Jose 0

13Cuba Havana 3-W

14Czech Republic Prague2-E

15Denmark Copenhagen 1-E

16Egypt Cairo 3-E

17Finland Helsinki 6-E

18France Paris 1-W

19Germany Berlin 1-E

20Greece Athens 3-E

21Hungary Budapest 4-E

22India New Delhi 1-E

23Indonesia Jakarta 1-E

24Israel 3-E

25Italy Rome 1-E

26Japan Tokyo 7-W

27Jordan Amman 3-E

28Kenya Nairobi 1-E

29Korea Seoul 7-W

30Malaysia Kuala Lumpur 1-E

31Mexico Mexico City 6-E

32Nepal Kathmandu 0

China

Jerusalem

No. Country/Place Major City Declination

33Netherlands Amsterdam 1-W

34New Zealand Wellington 22-E

35Norway Oslo 0

36Pakistan Islamabad 2-E

37Philippines Manila 1-W

38Portugal Lisbon 5-W

39Russia Moscow 9-E

40Singapore Singapore 0

41South Africa Cape Town 23-W

42Spain Madrid 3-W

43Sweden Stockholm 3-E

44Switzerland Bern 0

45Taiwan Tai-pei 3-W

46Thailand Bangkok 0

47UAE Abu Dhabi 1-E

48United Kingdom London3-W

49United States Washington, DC 10-W

50 Juneau 25-E

51 Phoenix 12-E

52 Little Rock 2-E

53 Sacramento 16-E

54 Denver 10-E

55 Atlanta 4-W

56 Honolulu 10-E

57 Boston 16-W

58 Saint Paul 2-E

59 Jackson 1-E

60 Santa Fe 10-E

61 Oklahoma City 6-E

62 Salem 18-E

63 Harrisburg 11-W

64 Salt Lake City 14-E

11.4 Compass Mode - Magnetic Declination at Major Cities

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