83Section 6GPS ReceiverReference3. To enable/disable automatic zoom, select the next‘Map’ tab and press ENTER. Highlight the ‘AutoZoom’ field and press ENTER. Select ‘On’ or ‘Off toenable or disable automatic zoom. Press ENTER toaccept the selected option. When ‘On’, theautomatic zoom feature automatically adjusts themap scale from 30 nm through each lower scale,stopping at 0.2 nm as you approach your destina-tion waypoint.4. To enable/disable all land data or aviation data,select the ‘Source’ tab, highlight the appropriatefield and press ENTER. The ‘Aviat’n Data’(Jeppesen Data) is selectable as ON, OFF or Air On(default setting.) On means the data will be on allthe time (subject to Map Setup filtering). Off meansthe data will be off all the time. Air On means thatthis data will be displayed only when the unit isplaced in the aircraft cradle (i.e. Air On – Aircraftmode only.) The MapSource data is selectable asOn, Off or Gnd On (default setting.) On means thedata will be on all the time (subject to Map Setupfiltering). Off means the data will be off all the time.‘Gnd On’ means that this data will be displayed onlywhen the unit is in the ground mode (i.e. ‘Gnd On’– Ground mode only or not in the aircraft cradle.)These settings allow you to display map dataaccording to your preference. If declutter isimportant then the settings of Air On/Gnd On willturn the Jeppesen Data and MapSource data On orOff automatically as the unit is used in or out of theaircraft cradle. If you like to see all the data all thetime, then set all types of data to On.5. For airports, navaids, active route waypoints, userwaypoints, state/provincial boundaries, rivers/lakesand cities: select the appropriate tab and pressENTER. Highlight the zoom field for the desiredfeature and press ENTER. Select the maximumscale at which you want the feature to appear onscreen (or ‘Off’ to never display) and press ENTER.Highlight the text field on appropriate tabs for thedesired feature and press ENTER. Select the textsize for small, medium, or large as desired or ‘None’to disable text, and press ENTER.Selecting the ‘Track Up’option makes the maprotate so the directionyou’re heading isalways at the top.‘North Up’ will keepthe top of the mapdisplay oriented north.The automatic zoomsetting steps the mapscale down througheach lower scale as youapproach yourdestination waypoint..