Page 5-8 GNS 400W Series Installation ManualRev. G 190-00356-085.3.3 MAIN SYSTEM CONFIGSelect the MAIN SYSTEM CONFIG Page(see Figure 5-3). This page allows you to configurethe Fuel, Terrain, Discretes, and Airframe options.FUELSelect Fuel in the CONFIGURE field to select the FUEL TYPE (AV Gas, Jet A, or Jet B)Selection DescriptionAV gas The aircraft is using Aviation gas (5.8 lbs./gal.)Jet A The aircraft is using Jet A or Jet A-1 fuel (6.7 lbs./gal.)Jet B The aircraft is using Jet B (JP-4) fuel (6.5 lbs./gal.)TERRAINSelect Terrain in the CONFIGURE field to select theTERRAIN TYPE (NONE, TERRAIN, TERRAINPROX, and HTAWS).To test the terrain data card, highlight the TEST CARDfield and press the ENT key. Verify that the TESTCARD field indicates ―PASS‖. A ―FAIL‖ conditionindicates that the terrain data card is unusable.To run the terrain card test, the unit may have to be turnedoff then on again if the airframe or terrain configurationshave changed.Selection DescriptionNone No terrain functionality is configured.TERRAIN The unit is configured for TERRAIN capability. Available when airframeis configured for fixed wing.TERRAIN PROX Unit configured for terrain proximity capability. Available when airframeis configured for helicopter.HTAWS Unit configured for HTAWS capability. Available when airframe isconfigured for helicopter and HTAWS is enabled.Figure 5-3. MAIN SYSTEM CONFIG PageFigure 5-4. MAIN SYSTEM CONFIG Page
