4 GPSMAP 496 Owner’s ManualIndexposition mode 29position report 168–169power 2, 3, 158connector 1, 4practice mode. See simulator modepreferenceslocation 167pressure 119projecting a waypoint 81–86project location 81proximity 86alarms 86points tab 85waypoint 86Rreceiver not usable 5receiver status 5receive satellite signals 3record mode 87, 90reference position 59release hold 41reset timer 118reset trip 45, 73retrace your path 90reviewroute 75waypoint 78road 70road routing tab 117route 76, 90add points 76add waypoint to 80edit 76, 77editing 67–68leg transition 74options menu 74preference 117routes 61–62, 163automotive mode 74–77editing 74–77navigating a saved route 75–77route tab 74RTCM 122, 124runway criteria 22Ssafety and product information 177–180sail boat racing timer 95satellite acquisition 5saved route 27, 74saved track 90save present location 63save track log 88saving the current route 72scanning for beacon 164scan for a frequency 123searching the sky 5search history 59selecting an approach 23–24selecting options 9sentences 125, 161serial communications port 159serial data format 121serial number 1setting up XM WX 127Setup tabGuidance tab 118Road Routing tab 117System tab 116Timers tab 118Time tab 119Units tab 119Welcome tab 121set an alarm 106set CDI scale 41set date 119set OBS and Hold 41set speed and fuel 44, 77show details 15show map 79signal strength 5simulated navigation 11–12simulator11smart airspace 32sonar 135, 136–139adjusting 137–139on the map page 135setting up 140, 142understanding 143sonar alarms 108Sound tab 115specifications 155speed 40, 47speed filter 116split screen, sonar 139storage 156Sun & Moon tab 109switch modes 13, 55, 91system alarms 107System tab 116Ttemperature 119, 146terrainalert 28Terrain Pageaviation mode 37–39declutter 33terrain warning 38text language 116thermoclines 145tidechart 111information 110station 111tab 110time
