Chapter 2: Installation 291. 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) awayfrom the vessel’s steering compass in order to avoid deviation of bothcompasses. To avoid compass deviation and reduction in sensitivityof the sensor, the fluxgate must also be positioned as far away aspossible from large iron masses.Note: If any doubt exists over magnetic suitability of the chosen site, theposition may be surveyed using a simple hand bearing compass. The handbearing compass should be fixed in the chosen position and the vesselswung through 360 degrees. Relative differences in reading between thehand bearing compass and the vessel’s main steering compass should,ideally, not exceed 10 degrees on any heading.Cabling1. Run the cable back to the course computer.2. Connect the to the fluxgate terminals on the course computer.D890-1FLUXGATE JOYSTICKGrey (screen) BlueRed YellowGreenNote: A 10m (30ft) extension cable is available for larger installations(part no. D174).
