GNS 400W Series Installation Manual Page 4-1190-00356-08 Rev. G4 SYSTEM INTERCONNECTS4.1 Pin Function List4.1.1 P4001 Main Connector(View looking at rear of unit)1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 2021 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 3940 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 5960 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78Pin Pin Name I/OStandard Function [1] Alternate Function [1]1 VLOC ANNUNCIATE Out2 GPS ANNUNCIATE Out3 WAYPOINT ANNUNCIATE Out4 TERMINAL ANNUNCIATE Out5 APPROACH ANNUNCIATE Out6 MESSAGE ANNUNCIATE Out7 OBS ANNUNCIATE REDUCED PROTECTION (RP MODE) Out8 SPARE ANNUNCIATE TERRAIN CAUTION ANNUNCIATE Out9 INTEGRITY ANNUNCIATE Out10 ANNUNCIATE D Out11 ANNUNCIATE E Out12 RESERVED TERRAIN WARNING ANNUNCIATE Out13 GPS SELECT TERRAIN NOT AVAILABLE ANNUNCIATE Out14 ILS/GPS APPROACH Out15 AIRCRAFT POWER 2 In16 TIME MARK OUT Out17 MAIN LATERAL SUPERFLAG Out18 MAIN VERTICAL SUPERFLAG Out19 AIRCRAFT POWER 1 In20 AIRCRAFT POWER 1 In21 MAIN +LEFT Out22 MAIN +RIGHT Out23 MAIN LATERAL +FLAG Out24 MAIN LATERAL –FLAG (GROUND) Out25 MAIN +TO Out26 MAIN +FROM Out27 MAIN +UP Out28 MAIN +DOWN Out29 MAIN VERTICAL +FLAG Out30 MAIN VERTICAL -FLAG (GROUND) Out31 MAIN OBS ROTOR C Out32 MAIN OBS ROTOR H (GROUND) Out33 MAIN OBS STATOR D In34 MAIN OBS STATOR E (2.5V COMMON OBS) Out35 MAIN OBS STATOR F In36 MAIN OBS STATOR G (2.5V COMMON OBS) Out37 AUDIO 1 HI HTAWS AUDIO OUTPUT Out38 AUDIO 1 LO (GROUND) HTAWS AUDIO GROUND Out39 LIGHTING BUS HI In