90 ST7001+ Autopilot Control Unit - Owner’s Handbook7 Adjusting Autopilot SettingsType 150G/400G autopilot systemsType 150G/400G autopilot systems have 9 possible response levels.Type 150/400 autopilot systemsType 150/400 (non-GyroPlus) autopilot systems have 3 possibleresponse levels:Magnetic variationIf required, set this value to the level of magnetic variation present atyour boat’s current position – indicated as east (VAR EAST) or west(VAR WEST). The autopilot sends this variation setting to otherinstruments on the SeaTalk system, and it can be updated by otherSeaTalk instruments.Screen text OptionsRESPONSE 1 to 9• level 1 gives the least pilot activity to conserve power, butmay compromise short-term course-keeping accuracy• levels 4 to 6 should give good course keeping with crisp,well controlled turns under normal operating conditions• level 9 gives the tightest course keeping and greatestrudder activity, but may lead to a rough passage in openwaters as the autopilot may ‘fight’ the seaScreen text OptionsRESPONSE 1 AutoSeastate on (Automatic deadband)• autopilot to gradually ignores repetitive boat movementsand only react to true variations in course• provides the best compromise between powerconsumption and course keeping accuracyRESPONSE 2 AutoSeastate off (minimum deadband)• provides tighter course keeping• increased power consumption and drive unit activityRESPONSE 3 AutoSeastate off + counter rudder yaw damping• provides tightest possible course keeping by introducingcounter rudder yaw dampingScreen text OptionsVARIATION Default setting = 0°VAR EAST/ VAR WEST 30°EAST(-30°) to 30° WEST (+30°) in 1° steps
