400W Series Installation Manual Page 4-5190-00356-02 Rev. G4.2 Power, Lighting, and AntennasThis section covers the power input requirements, lighting bus input, and antenna connections. See FigureH-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 --CAUTIONTo operate the COM transceiver in a 14 volt aircraft with a GNC 420AW, GNS 430AWor the 28 VDC upgrade units, (see Table 3-1), a 14 to 28 volt converter such as KGSElectronics model RB-126 or UC-14-28 or equivalent must be used. The voltageconverter should include a single short circuit protection device on its output, such as acircuit breaker. The output should be connected to the COM power input, P4002-11 andP4002-12 for the COM transmitter. The other power input pins (P4001-19, -20, -15, -72and P4006-44) accept 11 to 33 VDC. Refer to Figure H-5.A 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 & G/S SUPERFLAG outputs.4.2.2 Lighting BusPin 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 lighting conditionsbased 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
