Chapter 4: Installing the SportPilot
19
4.2 Installing the compass
The compass contains a self-levelling mechanism. This enables the compass to
provide accurate readings with pitch and roll movements up to +/- 35°.
Note:
The rattle that the fluxgate compass makes when shaken is normal. It is caused by
the pendulum weight hitting the inside of the case.
Figure 4-1: Fluxgate compass dimensions
Compass location
To achieve the best performance from the compass, mount it:
• With the Raymarine logo facing the bow.
Note:
If it is not possible to install the fluxgate compass with the logo facing the bow, you
must complete the Compass Calibration procedures (see Chapter 5:Compass Calibration).
• As close as possible to the boat’s pitch and roll center.
• At least 0.8m (2ft 6in) away from your boat’s steering compass to avoid devi-
ation of both compasses.
• As far away as possible from large iron masses, such as the engine or other
magnetic devices.
Note:
To check if the intended mounting location is free from magnetic influence, tape a
handheld compass to the chosen location, then turn the boat through 360°. The readings
on the handheld compass and your boat’s main steering compass (if accurately aligned)
should not differ by more than10° at any heading.
76 mm (3 in)
76 mm (3 in)
D5381-1
D1522-2
81057_6.book Page 19 Tuesday, February 21, 2006 2:21 PM
