Aircraft Power; Can Bus; Table 4-4 Can Bus - Garmin GMA 245 Installation Manual

Pin
36 PASS 1 MIC AUDIO IN LO
37 PASS 2 MIC AUDIO IN HI
38 PASS 2 MIC AUDIO IN LO
39 PASS 3 MIC AUDIO IN HI
40 PASS 3 MIC AUDIO IN LO
41 PASS 4 MIC AUDIO IN HI
42 PASS 4 MIC AUDIO IN LO
43 SPEAKER AUDIO OUT LO
44 SPEAKER AUDIO OUT HI
* Denotes Active Low (Inputs: ground to activate; Outputs: grounded when active)

4.3 Aircraft Power

The GMA 245 has four pins for aircraft power bus inputs. Use one wire for each of the pins connecting to
the aircraft power and ground. Do not splice the power and ground pins at the unit and use only one wire to
aircraft power and ground.
Pin Connector
8 J2402
9 J2402
10 J2402
11 J2402

4.4 CAN Bus

The CAN bus is used to interface with G3X Touch systems, and conforms to the BOSCH standard for
Controller Area Network 2.0-B, and complies with ISO 11898.
Pin Connector
36 J2401
37 J2401
190-01879-11
Rev. 6
Table 4-2 J2402 Pin Assignments
Pin Name
Table 4-3 Aircraft Power
AIRCRAFT POWER
AIRCRAFT POWER
POWER GROUND
POWER GROUND

Table 4-4 CAN Bus

CAN BUS HI
CAN BUS LO
Pin Name
Pin Name
GMA 245/245R Installation Manual
I/O
--
IN
--
IN
--
IN
--
--
OUT
I/O
IN
IN
--
--
I/O
I/O
I/O
Page 4-4