Chapter 6: Post Installation Procedures 71• Before any other changes have been made to the default calibrationsettings. Check and, if necessary, reset the values to therecommended levels, as described in Chapter 4.• Light wind and calm water, so that autopilot performance can beassessed without the influence of strong winds or large waves.• In waters clear of any obstructions.Note: At any time during the sea trial you can pressstandby to returnto hand steering.Automatic Compass Deviation CorrectionThe autopilot will correct the fluxgate compass for most deviatingmagnetic fields. Compass errors due to deviating magnetic fields canbe up to 45°, depending on your vessel type. The correction procedurereduces these to a few degrees, so it is essential to perform theprocedure as the first item in your initial sea trial.CAUTIONFailure to carry out the deviation correction may result inimpaired autopilot performance on some compass headings.To allow the system to determine the deviation and calculate anycorrection required, you must turn your vessel in slow circles. Thisprocedure must be carried out in calm conditions and preferably in flatwater.To perform the deviation correction:1. Make sure that the autopilot is in Standby mode.2. Press and hold the standby key for 2 seconds to display the UserSetup entry page. If CAL LOCK is displayed, you need to turn off thelock feature contained in Dealer Setup (see Chapter 4).
