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 A-3J2-13 ICS Mute Inhibit* J3502-13 MARKER HI SENS* INIf previous GMA 340 wiring connectedthis input to ground, default GMA 350/350H configuration will result inMarker Beacon RX mode always in HISENS.If previous wiring connected this inputonly to J3502-14, there is no compati-bility issueOption 1: Remove previous wiring orconnect to a switch to ground to allowfor pilot selectable MKR SENS mode.Option 2: Using the GMA 350/350Hconfiguration tool, configure theJ3502-13 input for no function insteadof MKR HI SENS.NOTE: The feature to mute musicduring ICS is still available with theconfiguration tool.J2-14 ICS Mute Inhibit Return J3502-14 PASS ISO TOGGLE/ICS KEY* INIf previous GMA 340 wiring connectedthis input to ground, default GMA 350/350H configuration will result in PASSICS state toggled each power-up.If previous wiring connected this inputonly to J3502-13, there is no compati-bility issue.Option 1: Remove previous wiring orconnect to a pushbutton to groundallow passengers to toggle ICS stateor configure as PASS ICS key.Option 2: Using the GMA 350/350Hconfiguration tool, configure theJ3502-14 input for no function insteadof PASS ISO TOGGLE/ICS KEY* IN.NOTE: The feature to mute musicduring ICS is still available with theconfiguration tool.J2-15 High Music Gain Select* J3502-15 ALERT 2 AUDIO IN HI None if not desired to use ALERT 2AUDIO IN source.None.NOTE: GMA 350/350H music gain isboth configurable and pilotadjustable. If the pilot adjustmentrange does not yield desired volumes,configuration offset can be adjustedas desired.J2-17 8 Ohm Select* J3502-17 RS-232 INIf previous GMA 340 wiring connectedthis input to ground, there will be nodamage or effect in GMA 350/350Hoperation.None if RS-232 communication toother Garmin equipment is notneeded. Otherwise, remove old wir-ing and connect RS-232 port to asdocumented in system installinstructions.J2-18 Reserved J3502-18 RS-232 OUT None NoneJ2-19 Tone Enable* J3502-19 PA MODE SELECTED* OUTIf previous GMA 340 wiring connectedthis pin to ground, there will be nodamage or effect in GMA 350/350Hoperation.None unless new PA MODESELECTED* OUT function is desiredfor wiring interface to otherequipment.J2-21 Swap Return J3502-21 RESERVEDIf previous GMA 340 wiring used thispin as the return path for the J2-20Swap input, the default GMA 350/350H configuration will continue tosupport this function without a wiringchange.NoneJ2-22 NC J3502-22 PLAY KEY* IN None NoneTable A-1. GMA 340/GMA 350 Pin DifferencesGMA 340Connector/Pin NumberGMA 340Pin FunctionGMA 350/350HConnector/PinNumberGMA 350/350HPin FunctionPossible GMA 340 WiringCompatibility Issues Corrective Action