67Chapter 7: Post Installation Procedures9. Press and hold STANDBY for 2 seconds to exit calibration and savethe new settings.Note: Setup options are always saved on exit.Further Heading Alignment AdjustmentYou should always check the compass alignment after swinging thecompass. However, once the initial deviation correction procedurehas been performed, you can make adjustments to the alignment asoften as you wish, without swinging the compass again.Although the compass deviation correction procedure removes mostof the alignment error, you will probably be left with small errors (ofthe order of a few degrees) that will vary depending on the heading.Ideally, you should check the heading reading against a number ofknown headings, plot a deviation curve, and determine the headingalignment value that will give the lowest average alignment error.This value can then be entered on the Heading Alignment screen, asdescribed above.If the average heading error is more than 5°, you should perform thecompass deviation correction procedure again.Checking Autopilot OperationHaving calibrated the compass the following procedure isrecommended to familiarise yourself with autopilot operation:1. Steer onto a compass heading and hold the course steady.2. Press AUTO to lock onto the current heading. A constant headingshould be achieved in calm sea conditions.3. Use the -1, -10, +1 and +10 keys to alter course to port or starboardin multiples of 1° and 10°4. Press STANDBY and disengage the autopilot to return to handsteering.
