Vectronix BT PLRF25C User Manual

Declination PLRF25C-1.2en
34
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.
2. This deviation must be set in the
DECLNATN menu (see page 36).
• Declination D:
Angle between GgN and MN
• Declination d:
Angle between GiN and MN
• Meridian convergence c:
Angle between GiN and GgN
GiN
-D
-c
-d
GgN
GgN
GiN=GgN
MNMNMN
-D
-d
GiN
-D
+c
-d

Vectronix BT PLRF25C Specifications

General

Brand	Vectronix
Model	BT PLRF25C
Category	Measuring Instruments
Language	English