Garmin GDU™ 37X Pilot’s Guide190-01054-00 Rev. EAppendix E209Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices IndexTRACK LOGThe GDU 37X draws an electronic breadcrumb trail or “track log” on the Map Page.The track log contains points along its path, including time and location for eachpoint.Track Log (Map Page)Track LogThe track log starts recording as soon as the GDU 37X gets a location fix. For thebest results, clear the track log before each flight. When the track log is full, new trackpoints overwrite the oldest track points (if set to ‘Wrap’ in the Track Log Settings).The percentage of memory used by the current track log appears at the top of theTrack Log Window. After the track log is cleared, it shows zero percent. When thescreen reaches 100%, the most recent track points start to overwrite the least recenttrack points (if ‘Wrap’ is selected in the Record Mode Field). To avoid losing trackpoints, save the track log when it approaches the 99% mark.The Save feature allows storage of up to 15 track logs.Displaying/removing the track log on the Map Page:1) From the Map Page, press the MENU Key. The Map Page Menu isdisplayed.2) Turn or move the FMS Joystick to select ‘Set Up Map’ from the Map PageMenu, and press the ENT Key.3) Turn the FMS Joystick to highlight the ‘Line’ options from the horizontallist.4) Move the FMS Joystick to highlight the ‘Track Log’ field.5) Turn the FMS Joystick to select ‘On’ or ‘Off’, and press the ENT Key.6) Press the FMS Joystick, the CLR Key, or the EXIT Softkey to return to theMap Page.