190-01499-00 Rev. A Garmin GTX 335/345 Pilot’s Guide 3-13 – DISPLAY FUNCTIONS/SETTINGS3 DISPLAY FUNCTIONS AND SETTINGSThe GTX 3X5 is organized into four menu groups shown on the right-hand side of thedisplay. Each menu group contains a set of functions and settings. Menu groupsinclude:• To navigate between the menu groups, press the FUNC key.• To navigate up or down and between the functions and settings within a currentmenu group, press the 8or 9keys.When enabled by installation configuration, the menu group last selected, and thefunctions last used within that menu group, are saved and restored at system power on.Otherwise, function navigation resets to the default state at system power on.3.1 Transponder (XPDR)FLIGHT ID – This page displays the active Flight ID. Unless configured,the Flight ID is not editable. If configured, the Flight ID Edit promptdisplays, as shown in figure 3-1. Use the ENT and CLR keys to edit theFlight ID. An example of the editable Flight ID page is shown infigure 3-2.Figure 3-1 Flight ID Edit Display PageFigure 3-2 Flight ID Editable Display Page• Transponder (XPDR) • Timers (TMR) • Altitude (ALT) • System (SYS)PressFUNCkeyPressFUNCkeyPressFUNCkeyPressFUNCkey