Garmin G3X Installation Manual page 356

23.13.4.3 RS-485 Input
The GSU 73 contains one channel of RS-485 serial data communications for receiving data from the
GMU 22.
Pin Connector
1 J731
2 J731
23.13.4.4 CAN Bus
This data bus conforms to the BOSCH standard for Controller Area Network 2.0-B. This bus complies
with ISO 11898. One GDU should be terminated (CAN BUS TERMINATION connected to CAN BUS
LO) and the GSU should be terminated if GSU is located at the end of the bus (see
Section 2.3.1.3 for details.
Pin Connector
7 J731
8 J731
29 J731
23.13.4.5 Configuration Module Interface
Connect the GSU 73 to the configuration module using the 4 pins listed below.
Pin Connector
20 J732
39 J732
59 J732
78 J732
190-01115-01
Rev. AA
MAGNETOMETER RS-485 IN B
MAGNETOMETER RS-485 IN A
CAN BUS HI
CAN BUS LO
CAN BUS TERMINATION
Pin Name
CONFIG MODULE CLOCK
CONFIG MODULE DATA
CONFIG MODULE POWER OUT
CONFIG MODULE GROUND
G3X/G3X Touch Installation Manual - LRU Pinouts
Pin Name
Section
Pin Name
Wire Color
WHITE (WHT)
YELLOW (YEL)
RED (RED)
BLACK (BLK)
I/O
IN
IN
24). See
I/O
I/O
I/O
--
I/O
OUT
I/O
OUT
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