Garmin GMA 350 Installation Manual

Also see for GMA 350: Pilot's guide Pilot's guide Installation manual

190-01134-11 GMA 350/350c/350H/350Hc Installation ManualRev. J Page 4-124.8 Miscellaneous Configurable I/OThe following active-low discrete inputs and outputs are configurable.NOTEOEM installations with custom pin assignments may have different functionality. Refer toOEM specific interconnect drawings.When configured as Push-To-Command (PTC), these inputs allow the pilot and copilot to enter voicecommands while pressing the appropriate PTC KEY.When configured as ICS KEYS, these inputs allow the pilot and copilot mic audio to be heard on theintercom system (ICS) while pressing the appropriate ICS KEY.When configured for PASS ISO TOGGLE, pressing this key will toggle the intercom isolation state of thepassengers.When configured as ICS KEY, this input allows the audio from all passenger mics to be heard on theintercom system (ICS) while pressed.An active low output that has low-impedance to ground during transmission and when received audio isdetected on the COM selected for transmissionAn active low output that has low-impedance to ground when PA mode is selected AND when the PTTkey is pressed.Table 4-18. PTC/ICSPin Name Connector Pin I/OPILOT PTC/ICS KEY* IN J3501 16 InCOPILOT PTC/ICS KEY* IN J3502 30 InTable 4-19. ISO/ICSPin Name Connector Pin I/OPASS ISO TOGGLE/ICS KEY* IN J3502 14 InTable 4-20. COMPin Name Connector Pin I/OCOM ACTIVE* OUT J3501 24 OutTable 4-21. PA MutePin Name Connector Pin I/OPA MUTE* OUT J3502 12 Out