190-01879-11 GMA 245/245R Installation ManualRev. 6 Page 4-44.3 Aircraft PowerThe GMA 245 has four pins for aircraft power bus inputs. Use one wire for each of the pins connecting tothe aircraft power and ground. Do not splice the power and ground pins at the unit and use only one wire toaircraft power and ground.4.4 CAN BusThe CAN bus is used to interface with G3X Touch systems, and conforms to the BOSCH standard forController Area Network 2.0-B, and complies with ISO 11898.36 PASS 1 MIC AUDIO IN LO --37 PASS 2 MIC AUDIO IN HI IN38 PASS 2 MIC AUDIO IN LO --39 PASS 3 MIC AUDIO IN HI IN40 PASS 3 MIC AUDIO IN LO --41 PASS 4 MIC AUDIO IN HI IN42 PASS 4 MIC AUDIO IN LO --43 SPEAKER AUDIO OUT LO --44 SPEAKER AUDIO OUT HI OUT* Denotes Active Low (Inputs: ground to activate; Outputs: grounded when active)Table 4-3 Aircraft PowerPin Connector Pin Name I/O8 J2402 AIRCRAFT POWER IN9 J2402 AIRCRAFT POWER IN10 J2402 POWER GROUND --11 J2402 POWER GROUND --Table 4-4 CAN BusPin Connector Pin Name I/O36 J2401 CAN BUS HI I/O37 J2401 CAN BUS LO I/OTable 4-2 J2402 Pin AssignmentsPin Pin Name I/O
