Garmin GHP 20 Marine Autopilot System for Steer-by-Wire Installation Instructions Manual

Contents

Garmin GHP 20 Marine Autopilot System for Steer-by-Wire Installation Instructions Manual Manual pdf 13 page image

GHP 20 Installation Instructions 132. Turn the boat in one direction using the autopilot and observe thebehavior.The boat should turn smoothly, not too quickly or too slowly.When you turn the boat using the autopilot, the boat shouldapproach and settle on the desired heading with minimal overshootand oscillation.3. Select an option:• If the boat turns too quickly or too sluggishly, adjust theautopilot acceleration limiter (page 13).• If the heading hold oscillates significantly or the boat does notcorrect when turning, adjust the autopilot gain (page 13).• If the boat turns smoothly, the heading hold oscillates onlyslightly or not at all, and the boat adjusts the heading correctly,proceed to step 5.4. Repeat steps 2 and 3 until the boat turns smoothly the heading holdoscillates only slightly or not at all, and the boat adjusts the headingcorrectly.5. For planing vessels, repeat steps 1–4 at faster speeds (page 13).adjusting the acceleration Limiter SettingsNOTE: When you manually adjust the acceleration limiter, makerelatively small adjustments. Test the change before making additionaladjustments.1. Turn on the GHP 20 using the advanced configuration procedure(page 13).2. On the GHC 10, select Menu > Setup > Dealer AutopilotConfiguration > Autopilot Tuning > Acceleration Limiter.3. Select an option:• Increase the setting if the autopilot turns too quickly,• Decrease the setting if the autopilot turns too slowly.4. Test the autopilot configuration.5. Repeat steps 2 and 3 until the GHP 20 performance is satisfactory.adjusting the autopilot Gain SettingsNOTE: When you manually adjust the rudder gain (or counter gain),make relatively small adjustments, and adjust only one value at a time.Test the change before making additional adjustments.1. Enable the advanced configuration procedure (page 13).2. On the GHC 10, select Menu > Setup > Dealer AutopilotConfiguration > Autopilot Tuning > Rudder Gains.3. Select an option:• Select Low Speed or High Speed and use the arrows on theGHC 10 to adjust how tightly the rudder holds the heading andmakes turns at low speed or high speed.If you set this value too high, the autopilot may be overactive,attempting to constantly adjust the heading at the slightestdeviation. An overactive autopilot can cause excess wear andtear on the drive unit, and drains the battery at a faster-than-normal rate.• Select Low Speed Counter or High Speed Counter to adjusthow tightly the rudder corrects the turn overshoot. If you set thisvalue too high, the autopilot can overshoot the turn again whenattempting to counter the original turn.4. Test the autopilot configuration.5. Repeat steps 2 and 3 until the GHP 20 performance is satisfactory.advanced Configuration ProcedureAdvanced configuration options are not available on the GHC 10 undernormal conditions. To access the advanced configuration settings of theGHP 20, enable the advanced configuration procedure.Enabling the advanced Configuration Procedure1. From the heading screen, select Menu > Setup > System > SystemInformation.2. Press and hold the center soft key ➊ for 5 seconds.Dealer Mode appears.➊3. Press Back > Back.If the option for Dealer Autopilot Configuration is available on theSetup screen, the advanced configuration procedure is enabled.advanced Configuration SettingsYou can run the Autotune automated configuration process, calibrate thecompass, and define north on the GHP 20 through the GHC 10 withoutrunning the wizards. You can also define most settings individually,without running the configuration processes.Manually Running the automated ConfigurationProcedures1. Enable the advanced configuration procedure (page 13).2. From the Heading screen, select Menu > Setup > Dealer AutopilotConfiguration > Automated Setup.3. Select Autotune, Calibrate Compass, or Set North.4. Follow the on-screen instructions.Manually Running the Sea trial WizardThe Sea Trial Wizard allows you to quickly define all of the importantconfiguration settings on the GHP 20. After running the wizard, ifyou do not feel the GHP 20 is working correctly, you can run thewizard again at any time. To access the wizard, enable the advancedconfiguration procedure (page 13).Manually Defining Individual Configuration Settings1. Enable the advanced configuration procedure (page 13).2. From the Heading screen, select Menu > Setup > Dealer AutopilotConfiguration.3. Select the setting category.4. Select a setting to configure.Descriptions of each setting are available in the appendix (page 16).5. Configure the value of the setting.NOTE: Configuring certain settings in the dealer autopilotconfiguration procedure may require you to modify other settings.Review the GHP 20 Configurations Settings section (page 16) prior tomodifying any settings.