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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
08
true north
08
magnetic
north
magnetic
north
object B
object B
point A
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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