121Basic OperationSimulatorSimulator ModeThe GNS 480 has a built-in simulator so you can practice with your unit without being in flight. You can setyour present position, ground speed, and track. The track can also be set to Auto to simulate use with an auto-pilot. The Com and Nav radios, and transponder will appear to operate normally, but will not send any signals.If the GNS 480 is configured to connect to a second GNS 480 and is run in simulator mode, an error messagewill appear: Ignore the message, press CLR, and continue using the Simulator.NOTE: If the GNS 480 is configured to connect to a second GNS 480 and is run in simulatormode, the following message will appear: “No communication with previously configured GNS480 unit. User MUST configure each unit manually. ENTER for Master CLR for Slave.” Ignorethe message, press CLR, and continue using the Simulator.1. After the GNS 480 start-up screen (clouds and title) ends and the left side of the display informationjust appears, press SUSP three times.2. Press Menu/Enter to continue in Simulator mode or press CLR to continue with normal operation.3. Turn the Small knob, if desired, to change the Local Altimeter Setting. Press Menu/Enter to continueto the start-up test phase. Press SKIP to bypass the start-up tests.4. Select Automatic Track mode, present position, and airspeed as described below.Automatic Track (ATK)Press the ATK key to enable/disable the Automatic Track mode. When enabled, the simulator ownship willfollow the tracking of the flight plan. Press CLR to exit and enable Automatic Track. Press ATK and CLR againto disable Automatic Track.Manual TrackPress the ATK key to enable/disable the Manual Track mode. When Manual Track Mode is active, press SPDand set the Track by highlighting the Track with the Large knob and selecting the value with the Small knob.Press Menu/Enter after selecting the values.