The GPS III Pilot’s Main Menu provides access to an additional set of pages thatare used to create or edit waypoints, create routes, review track log or trip information,configure the vertical navigation features, perform E6B calculations or make changesto system settings. These seven menu items are divided into categories by function.The waypoint and route management features of the Main Menu are described in moredetail in the Reference section of this manual. Let’s take a look at the Main Menu andone of its options.To view the Main Menu:1. Press the MENU key twice.To select an item from the Main Menu:1. Highlight the desired item using the rocker keypad, and press ENTER.2. To return to the Main Menu, press QUIT.The ‘Setup’ option provides a list of choices (presented as a series of ‘file tabs’) toperform various configuration settings including system settings, selection of positionformat and units of measure, time display, setting various alarms, enabling the built-insimulator feature and interface options with other equipment:To change units of measure for distance and speed:1. Select the ‘Setup’ option from the Main Menu (as described above), and press ENTER.2. Highlight the ‘Units’ tab with the rocker keypad. The units settings are automaticallydisplayed.3. Highlight the ‘Distance & Speed’ field using the rocker keypad, and press ENTER.A pop-up menu appears showing the available options.4. Select the desired option using the rocker keypad, and press ENTER.The Main Menu providesaccess to additional pages,including database informa-tion, flight plans (routes), tripinformation and unit settings.The ‘Setup’ option provides alist of menu choices to per-form various configurationsettings, such as changingunits of measure for distanceand speed. 13GETTING STARTEDMain Menu