Garmin GNS 480 Installation Manaul

Also see for Apollo CNX80: User Newsletter User Newsletter Supplemental Flight manual Pilot's guide Data list

Contents

Post-Installation Configuration & CheckoutGNS 480 (CNX80) Installation Manual 560-0982-01 Rev L 3-31NOTEThis checkout must be completed with the aircraft moved away from hangars and otherstructures that may obstruct the view of the satellites.3.3.2.1.1 Initial Power-UpThe first time the GNS 480 is used after it is installed, the GPS seed position, UTC time and date must beentered. Following the display of the main start-up screen, the screen shown in Figure 3-30 will bedisplayed for 10 seconds. Press the CHG smart key to allow the position to be edited. The latitude(degrees) will be highlighted. Use the large, outer knob to select the next or previous editable data fieldand turn the small, inner knob to change the current setting. When the position, UTC time and date havebeen entered, press the MENU/ENTER key to accept the entries. The Master GPS Reset must be set to‘No’.NOTEThe latitude and longitude must be within one degree of the actual position, and the UTCtime (not local time) must be within one minute. If position, time and date are not enteredcorrectly, GPS acquisition may take up to 20 minutes.Figure 3-30. GPS Information Start-up ScreenIf the exact position is not known, the GNS 480 can determine its own initial position. If it is desired to letthe GNS 480 determine its own position, do not enter the position, time and date after the CHG smart keyis pressed. Instead, use the use the large, outer knob to select the Master GPS Reset item and set it to‘Yes’ using the small, inner knob. Press the MENU/ENTER key to accept the changes, and then press theMENU/ENTER key again to acknowledge the STOP! message.NOTEGPS acquisition may take up to 20 minutes after a Master GPS Reset is performed.