GNS 400W Series Installation Manual Page 4-5190-00356-08 Rev. G4.2 Power, Lighting, and AntennasThis section covers the power input requirements, lighting bus input, and antenna connections. SeeFigure H-5 for interconnect information.4.2.1 PowerPin Name Connector Pin I/OAIRCRAFT POWER 1 (MAIN) P4001 19 InAIRCRAFT POWER 1 (MAIN) P4001 20 InAIRCRAFT POWER 2 (MAIN) P4001 15 InAIRCRAFT POWER 2 (MAIN) P4001 72 InAIRCRAFT POWER (COM) P4002 11 InAIRCRAFT POWER (COM) P4002 12 InAIRCRAFT POWER (NAV SUPERFLAG) P4006 44 InAIRCRAFT GROUND P4001 77 --AIRCRAFT GROUND P4001 78 --AIRCRAFT GROUND P4002 21 --AIRCRAFT GROUND P4002 22 --AIRCRAFT GROUND P4006 41 --For the main power input, a 14 VDC installation requires two aircraft power and two aircraft groundconnections be used for each main power input used. A 28 VDC installation requires a minimum of oneeach power and ground connection, but two are recommended.CAUTIONA power connection on P4006-44 is only required if NAV SUPERFLAG and/or G/S SUPERFLAG isutilized.The power inputs P4001-19 and -20 provide power for all functions of the 400W Series unit except theCOM transmitter and the NAV and G/S SUPERFLAG outputs.4.2.2 Lighting BusCAUTIONConnection of the lighting bus to incorrect pins can cause damage to the unit that willrequire return to the factory for repair. Ensure that the lighting bus is connected to thecorrect pins and does not short to any adjacent pins prior to applying power to the unit,including the lighting bus.Pin Name Connector Pin I/OLIGHTING BUS HI P4001 39 InLIGHTING BUS LO P4001 40 InThe 400W Series unit can be configured to track 28 VDC, 14 VDC, 5 VDC or 5 Vac lighting buses usingthese inputs. Alternatively, the 400W Series unit can automatically adjust for ambient lightingconditions based on the photocell. Refer to Section 5.3.7 for configuring lighting inputs.4.2.3 AntennasPin Name Connector I/OGPS ANTENNA P4003 InCOM ANTENNA P4004 I/OVOR/LOC ANTENNA P4005 InGLIDESLOPE ANTENNA P4007 In
