190-01879-11 GMA 245/245R Installation ManualRev. 6 Page 4-64.6 Audio Inputs/Outputs and Mic Keys4.6.1 Mic Audio Inputs and Mic Keys4.6.2 COM Audio and Mic KeysTable 4-6 Mic Audio Inputs and Mic KeysPin Connector Pin Name Description I/O34 J2401 PILOT MIC KEY* IN Enables respective MIC audio intothe selected transceiver unitIN33 J2402 COPILOT MIC KEY* IN IN33 J2401 PILOT MIC AUDIO IN HI Pilot Mic audio input and groundreferenceIN35 J2401 PILOT MIC AUDIO IN LO --32 J2402 COPILOT MIC AUDIO IN HI Copilot Mic audio input and groundreferenceIN34 J2402 COPILOT MIC AUDIO IN LO --35 J2402 PASS 1 MIC AUDIO IN HI Passenger 1 Mic audio and groundreferenceIN36 J2402 PASS 1 MIC AUDIO IN LO --37 J2402 PASS 2 MIC AUDIO IN HI Passenger 2 Mic audio and groundreferenceIN38 J2402 PASS 2 MIC AUDIO IN LO --39 J2402 PASS 3 MIC AUDIO IN HI Passenger 3 Mic audio and groundreferenceIN40 J2402 PASS 3 MIC AUDIO IN LO --41 J2402 PASS 4 MIC AUDIO IN HI Passenger 4 Mic audio and groundreferenceIN42 J2402 PASS 4 MIC AUDIO IN LO --*Denotes Active Low (Ground to activate)Table 4-7 COM Audio and Mic KeysPin Connector Pin Name Description I/O12 J2401 COM 1 MIC KEY* OUT Enables transmission on therespective transceiver unitOUT30 J2401 COM 2 MIC KEY* OUT OUT9 J2401 COM 1 AUDIO IN HI COM 1 Audio Input IN11 J2401 COM 1 MIC AUDIO OUT HI COM 1 Audio Output OUT10 J2401 COM 1 AUDIO LO Ground Reference for COM 1 --13 J2401 COM 2 AUDIO IN HI COM 2 Audio Input IN15 J2401 COM 2 MIC AUDIO OUT HI COM 2 Audio Output OUT14 J2401 COM 2 AUDIO LO Ground Reference for COM 2 --*Denotes Active Low (grounded when active)
