IndeXAaccessories 116accuracy alarm 77acquiring satellites 5active route page 50, 56options menu 50active track tab 34, 37AC outlet 2add to route 22, 24, 27, 62advanced NMEA output setup 94alarms 85anchor drag 76arrival 76DSC 72, 75navigation 76next turn 76off course 76persistent 76sonar 78system 77weather 77alarms tab 76alerts. See alarmsanchor drag 76antenna 1, 121append to route 27arrival alarm 76ask my preference 87assign category 30attention tone 85AutoLocate 3, 5automotive mode 56following a saved route 60navigating 57pages 64–66page sequence 56auto arrange 19average location 28avoidance button 87avoids 61, 87Bbacklight 3, 85basic operation 13batterylevel 2pack 1, 2saver mode 86beeper 85bug indicator 46Ccable 117calculation method 87calendar tab 78calibrate water speed 109cards, data 120carpool lanes 87categoriesfind menu 17waypoint 30, 31CDI. See Course Deviation Indicatorcelestial tab 79hunt & fish sub tab 82sun & moon sub tab 81chain number 125charging 2check beacon wiring 124cigarette lighter adapter 2cities 17cleaning ivcleartrack log 35clock alarm 77color mode 84compass page 45, 85marine timer 46options menu 46showing/hiding 45connecting the GXM 30 antenna 118connecting the power cable 2, 117county warnings 97count down 88course pointer 46createcategory 30route 20waypoints 24, 25current route page 63custom avoids 61, 87Ddata card 120information 19, 40slot 1data fieldschanging 39options 132date 89date/time 123daylight saving time 89day view 79DB-9 119deactivate 50declutter 43deep water 78defaults 8, 10138 GPSMAP 378/478 Owner’s ManualIndeX