User's Manual

12.4 Compass Mode - Magnetic Declination Compensation
magnetic t rth
magnetic dRllnatlon ;~e no true
,.rth . ~ .. ~3.W "" burt,.
... / 300'
objKtll /'
mllln_le
~~;~Inlil polntA
TNeaeamg(TB) -
MIgn.tic B •• ring {MB}- W ... rty Magnetic eeclination (WI
300' (TB) '" 323" (MB) - 23" (WI
Compln, •• thl IInrin II
.... W .... rIJ (WI Malln"e Dlcllnatlon
magnetic
declination
true north 22° E
tru.
_______ b •• ring
.b<.t.ot •• 'W O· / _________ ~:~~.tlO
300'
mlunmlc
b •• rlng polntA
27S"
True B
•• ring (TBI·
Magnalle Blaring (MB) + E .... rty Magn.ae D.ellnaaon (E)
300' (TB)· 278" (MB) + 22" (E)
COMp.n ........ II •• rln •
.... E .... ..., (EI Magnetic Dlcllnatlon
Magnetic Declination Com~n •• tlon
To compenlate for an object'a bearing. either
subtract westerty (W) magnetic declination or add
... terl,(E) magnetic declination with the
magnetic bearing.
::.~~l~. !,;,m~::!"~:r.d:::ap~~~~C32~!~lIn.tlon
• TB • MB - W. When MB· 323" ; W "'23"
• TB • 323" - 23"
• TB • 300"
• The true bearing
i. 300".
Exemple 2: Easterly magneUc declination 22"
and the
compan needle points 278".
• TB '"
MB + E. When MB " 278"; E " 22"
• TB " 278"+ 22"
• TB • 300"
• The true
be.rlng II 300".
The Station
allow. you to compen.ate the
:r;;W~:~I:~a?~g e~:h~fl~C:11~~~ ~h:c:rna:~et~;
E •• terly declined.
Check the coming .ection ·Calibrating the
Compau· for more details on the aettlng.