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Page 4-8 GMA 240 Installation Manual
Rev. A 190-00917-01
4.5.8 Tel Audio I/O
Pin Connector Pin Name Description I/O
3 P2401 TEL AUDIO IN HI Telephone Audio Input IN
4 P2401 TEL AUDIO LO Ground Reference for Telephone --
5 P2401 TEL MIC AUDIO OUT HI TEL MIC Audio Output OUT
4.5.9 Headset Outputs
Pin Connector Pin Name Description I/O
16 P2402 PILOT HEADSET AUDIO OUT LEFT OUT
31 P2402 PILOT HEADSET AUDIO OUT RIGHT OUT
1 P2402 PILOT HEADSET AUDIO OUT LO
Pilot Headset Audio
Output
--
3 P2402 COPILOT HEADSET AUDIO OUT LEFT OUT
4 P2402 COPILOT HEADSET AUDIO OUT RIGHT OUT
2 P2402 COPILOT HEADSET AUDIO OUT LO
Copilot Headset Audio
Output
--
40 P2401 PASS HEADSET AUDIO OUT LEFT OUT
41 P2401 PASS HEADSET AUDIO OUT RIGHT OUT
42 P2401 PASS HEADSET AUDIO OUT LO
Passenger Headset
Audio Output
--
NOTE
Copilot and Passenger headset outputs are internally the same
connection. Separate Passenger headset output pins are provided for
wiring convenience and GMA 340 pin compatibility.
NOTE
For CREW ISO configuration, the copilot’s headphone jack should be
wired in parallel with the pilot jack to the Pilot headset output pins.
Passengers may be connected to either the copilot or passenger pins.
4.5.10 COM Swap
Pin Connector Pin Name Description I/O
20 P2402 COM SWAP* IN Ground Through a Momentary PB
Switch to Swap Active COM (COM 1
or COM 2)
IN
21 P2402 COM SWAP RETURN Return Path for PB Switch --