Compass Calibration; General Instructions - Vectronix BT PLRF25C User Manual

Compass calibration

General instructions

How?
There is a choice of two cali-
bration procedures
• 12 point calibration
(recommended)
provides best precision.
• 4 point calibration
May achieve adequate
precision for many
applications if time does
not permit a 12 point
calibration.
Compass calibration
When?
• After every battery
change
• After the device has been
exposed to strong
magnetic fields.
• After parts have been
attached or removed to
the device (e.g. night
vision device)
 Check the stored decli-
nation after every com-
pass calibration and
correct if necessary.
30
Where?
In a open area (e.g. a field)
at an adequate distance
from buildings and metallic
objects (see page 25).
Ensure that there are no
buried pipes, cables, etc. in
the vicinity.
 Never calibrate the
compass inside a
building or in the
vicinity of disruptive
magnetic fields.
PLRF25C-1.2en