Garmin GPSMAP 420s Owner's Manual - Page 5

Configuring the Chartplotter 37 Configuring System Settings 37 Configuring Units of Measure 37 Changing the System Language 38 Configuring Navigation Preferences 38 Configuring Communications Settings 40 Setting Alarms 41 Setting the Total Fuel Onboard Alarm 42 Configuring My Boat 43 Configuring Other Vessels 44 Using Sonar 45 Understanding the Full Screen 45 Understanding the Split Frequency Screen 46 Understanding The Split Zoom Screen 46 Understanding the Temp Log Screen 47 Setting Up Sonar 47 Advanced Sonar Settings 48 Digital Selective Calling (DSC 50 Using the Chartplotter with a VHF Radio 50 Adding a DSC Contact 51 Viewing the DSC List 51 Receiving Distress Calls 51 Man-Overboard Distress Calls Initiated from a VHF Radio........ 52 Man-Overboard Distress Calls Initiated from the Chartplotter.... 52 Position Tracking 52 Introduction Placing an Individual Routine Call 53 Calling an AIS Target 54 Appendix 55 Specifications 55 Alarms and Messages 57 Capturing Screenshots 60 Caring for the Unit 60 Software License Agreement 61 Index 62 GPSMAP 400/500 Series Owner's Manual iii