Raymarine Autohelm 100, Install Manual

Page: 30 / 109

Chapter 2: Installation 29
1. Locate the fluxgate compass on a suitable vertical surface.
2. Drill four pilot holes and attach the fluxgate compass using the self-
tapping screws provided.
3. Make sure that the fluxgate is positioned at least 0.8m (2ft 6in) away
from the vessel’s steering compass in order to avoid deviation of both
compasses. To avoid compass deviation and reduction in sensitivity
of the sensor, the fluxgate must also be positioned as far away as
possible from large iron masses.
Note:
If any doubt exists over magnetic suitability of the chosen site, the
position may be surveyed using a simple hand bearing compass. The hand
bearing compass should be fixed in the chosen position and the vessel
swung through 360 degrees. Relative differences in reading between the
hand bearing compass and the vessel’s main steering compass should,
ideally, not exceed 10 degrees on any heading.
Cabling
1. Run the cable back to the course computer.
2. Connect the to the fluxgate terminals on the course computer.
D890-1
FLUXGATE JOYSTICK
Grey (screen) Blue Red Yellow Green
Note: A 10m (30ft) extension cable is available for larger installations
(part no. D174).