Declination - Vectronix BT PLRF25C User Manual

Declination

Declination explanation
• Within the context of using PLRF25C,
declination is understood as the deviation
between magnetic north (MN) and grid
north (GiN).
• Anyway, depending on the country or
region declination possibly can be under-
stood as deviation between magnetic
north (MN) and geographical north
(GgN).
To get the correct azimuth from PLRF25C
in a certain coordinate system:
1. The deviation between magnetic north
(MN) and grid north (GiN) of the speci-
fied coordinate system must be known.
Declination
2. This deviation must be set in the
menu (see page 36).
DECLNATN
GiN
GgN
MN
• Declination D:
Angle between GgN and MN
• Declination d:
Angle between GiN and MN
• Meridian convergence c:
Angle between GiN and GgN
34
GiN=GgN
GgN
MN MN
PLRF25C-1.2en
GiN