Garmin GMA 240 installation manual 4.3Aircraft Power and Lighting

4.2.3P2403 Connector (front panel 2.5 mm mini-jack)

Figure 4-2. 2.5 mm plug used with P2403

Pin	Pin Name	I/O
TIP	MUSIC 1 LEFT IN/TEL MIC OUT HI	IN/OUT
RING	MUSIC 1 RIGHT IN/TEL AUDIO IN HI	IN
SLEEVE	MUSIC 1 LO IN/TEL AUDIO LO	--

4.3Aircraft Power and Lighting

4.3.1Aircraft Power

The GMA 240 has four inputs for aircraft power bus inputs of 14/28Vdc.

Pin	Connector	Pin Name	I/O
8	P2402	AIRCRAFT POWER	IN
9	P2402	AIRCRAFT POWER	IN
10	P2402	POWER GROUND	--
11	P2402	POWER GROUND	--

4.3.2Lighting Bus

The GMA 240 can be configured to track a 14 or 28 Vdc lighting bus using these inputs. Refer to Figure B-1 for lighting interconnections.

Pin	Connector	Pin Name	I/O
5	P2402	LIGHTING BUS 14V LO/28V LO	--
6	P2402	LIGHTING BUS 14V HI/28V LO	IN
7	P2402	LIGHTING BUS 14V HI/28V HI	IN

Page 4-4	GMA 240 Installation Manual
Rev. A	190-00917-01