Garmin GNS 480 Installation Manual

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

Post-Installation Configuration & Checkout3-40 560-0982-01 Rev A GNS 480 (CNX80) Installation Manual5. If installed, set the RMI select switch to the Nav position. Tune a local VOR station, or use asimulated signal from an approved VOR Test System.6. Verify that the RMI needle swings and points towards the VOR station.3.3.2.4.11 DMEThe GNS 480 can channel a DME based upon the tuned VOR frequency. This check verifies that theGNS 480 is properly tuning the DME. If the following steps do not perform correctly, check theelectrical connections and configuration setup.1. Tune a co-located VOR/DME station. Listen to the DME ident via the audio panel and ID the stationto verify that it is correct.2. Tune an invalid VOR station. Verify that the DME changes to an invalid station.3.3.2.4.12 SkywatchThe GNS 480 can display traffic from a Skywatch system, and can optionally provide the user interfaceto control the Skywatch system. This check verifies that the GNS 480 is properly receiving traffic dataand (if applicable) controlling the Skywatch operating modes. If the following steps do not performcorrectly, check the electrical connections and configuration setup.1. On the GNS 480 go to the traffic page. This page is accessed by pressing the FN key repeatedly untilthe TFC smart key is displayed. The TFC smart key is then pressed to display the traffic page.2. Verify that ‘Data Fail’ is not displayed and the Skywatch operating mode is displayed in the upperright hand corner.NOTEThe following steps need to be completed only if the GNX 480 is providing the userinterface to the Skywatch. The Skywatch weight-on-wheels switch must indicate ‘onground’ in order for the following checks to be completed.3. Press the MENU/ENTER key to display the line select key functions and press the STBY / OPERline select key. Verify that pressing the STBY / OPER line select key toggles the Skywatch modebetween STBY and OPER.4. Ensure that the Skywatch is in Standby, and press the TEST line select key. Verify that ‘Self Test inProgress’ is displayed and the Skywatch test pattern is displayed on the traffic page.NOTEFor dual GNS 480 installations, this check must be performed for each GNS 480 that isconfigured to display traffic. Both GNS 480 units can be on while this check is carriedout on each unit.3.3.2.4.13 CO GuardianThe GNS 480 can receive carbon monoxide level from an external sensor. This check verifies that theGNS 480 is receiving data from these units. Ensure that the GNS 480 and carbon monoxide sensor areturned on and in normal mode. If the following steps do not perform correctly, check the electricalconnections and configuration setup.NOTEFor dual GNS 480 installations, this check must be performed for each GNS 480 that isreceiving information from the carbon monoxide sensor.