Chapter 3: Calibration
19
3
Cal
ibrat
io
n
Chapter 3: Calibration
CAUTION:
If you fail to complete calibration, the performance of the Smart
Heading System will be impaired on some compass headings.
This chapter explains how to calibrate the Smart Heading System using a
Pathfinder Plus display. This chapter contains the following sections:
Note:
The Pathfinder Plus display must contain software release 2
(or later) to enable the compass calibration feature. Contact your
Raymarine dealer if you need more information or a software upgrade.
Note:
You can also calibrate the compass system using a Raymarine
autopilot (see the Appendix).
3.1 Compass calibration overview
When you have completed installation, you must take the boat on a short
seatrial to calibrate the Smart Heading System. This involves:
•
linearising the compass – to reduce errors caused by deviating
magnetic fields on your boat
•
aligning the heading – so the heading from the Smart Heading System
matches a known reference
You should
only
perform the initial seatrial:
•
in conditions of light wind and calm water
•
in waters that are clear of any obstructions, so the boat has plenty of
clear space to maneuver
Note:
If you have a GPS connected to your Pathfinder Plus, make sure
you switch it on so you can align your compass heading to COG (course
over ground).
CAUTION: EMC conformance
Always check the installation before going to sea to make sure that it
is not affected by radio transmissions, engine starting etc.
Section
Page
Section 3.1, Compass calibration overview
page 19
Section 3.2, Calibrating with a Pathfinder Plus display
page 20
81198_1.book Page 19 Monday, February 11, 2002 8:36 AM
