Garmin GMA 240 Installation Manual page 32

4.5.8 Tel Audio I/O
Pin Connector
3 P2401
4 P2401
5 P2401
4.5.9 Headset Outputs
Pin Connector
16 P2402 PILOT HEADSET AUDIO OUT LEFT
31 P2402 PILOT HEADSET AUDIO OUT RIGHT
1 P2402 PILOT HEADSET AUDIO OUT LO
3 P2402 COPILOT HEADSET AUDIO OUT LEFT
4 P2402 COPILOT HEADSET AUDIO OUT RIGHT
2 P2402 COPILOT HEADSET AUDIO OUT LO
40 P2401 PASS HEADSET AUDIO OUT LEFT
41 P2401 PASS HEADSET AUDIO OUT RIGHT
42 P2401 PASS HEADSET AUDIO OUT LO
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.
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
20 P2402
21 P2402
Page 4-8
Rev. A
Pin Name
TEL AUDIO IN HI
TEL AUDIO LO
TEL MIC AUDIO OUT HI
Pin Name
NOTE
NOTE
Pin Name
COM SWAP* IN
COM SWAP RETURN
Description
Telephone Audio Input
Ground Reference for Telephone
TEL MIC Audio Output
Description
Pilot Headset Audio
Output
Copilot Headset Audio
Output
Passenger Headset
Audio Output
Description
Ground Through a Momentary PB
Switch to Swap Active COM (COM 1
or COM 2)
Return Path for PB Switch
GMA 240 Installation Manual
I/O
IN
--
OUT
I/O
OUT
OUT
--
OUT
OUT
--
OUT
OUT
--
I/O
IN
--
190-00917-01