Chapter 2: Basic Operation 72 Basic OperationChanging course in Auto modeIn Auto mode, use the -1 and -10 (port) and +1 and +10 (starboard)keys to change the locked heading in steps of 1° or 10°. For example:press -10 three times for a 30° course change to port.Adjusting performance – Type 150G/400GThe main way you can adjust the performance of Type 150G/400G(GyroPlus) autopilot systems is by changing the response level. Thisis the only user adjustment you should need to make to the autopiloton a regular basis.The response level controls the relationship between the autopilot’scourse keeping accuracy and the amount of helm/drive activity.Type 150G and 400G autopilot systems have 9 levels of response:• level 1 gives the least pilot activity to conserve power, but maycompromise short-term course-keeping accuracy• levels 4 to 6 should give good course keeping under normaloperating conditions – with crisp, well controlled turns butwithout being over-aggressive• level 9 gives the tightest course keeping and greatest rudderactivity, but may lead to a rough passage in open waters as theautopilot may ‘fight’ the seaWhen you require extra tight course keeping (e.g. for pilotage inconfined and sheltered waters), increase the setting. If you want tominimize drive activity and conserve battery power, decreasethe setting.Port StarboardororD3320-2
