Garmin G3X User Manual

190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 23-51
23.11 GMU 22 (Magnetometer)
23.11.1 J441 Connector
Figure 23-22 J441 on GMU 22, as viewed looking at connector on unit
23.11.2 Power Function
Power-input pins accept supply voltage from ADAHRS (GSU 25/73).
23.11.3 Serial Data
23.11.3.1 RS-232
The RS-232 input pin accepts data from the ADAHRS (GSU 25/73).
23.11.3.2 RS-485
The RS-485 pins provide data to the ADAHRS (GSU 25/73).
Pin Pin Name I/O
1 SIGNAL GROUND --
2 RS-485 OUT B Out
3 SIGNAL GROUND --
4 RS-485 OUT A Out
5 SPARE --
6 POWER GROUND --
7 SPARE --
8 RS-232 IN In
9 +12 VDC POWER In
Pin Name Connector Pin I/O
+12 VDC POWER, GMU 22 J441 9 In
POWER GROUND, GMU 22 J441 6 --
Pin Name Connector Pin I/O
RS-232 IN J441 8 In
Pin Name Connector Pin I/O
RS-485 OUT A J441 4 Out
RS-485 OUT B J441 2 Out

Garmin G3X Specifications

General

Display Type	LCD
Touchscreen	Yes
Power Input	10-32 VDC
Connectivity	Bluetooth, Wi-Fi (optional)
Interfaces	RS-232
GPS	Internal GPS/WAAS receiver
AHRS	Integrated AHRS
Air Data Computer	Integrated Air Data Computer
Autopilot Compatibility	Compatible with Garmin autopilots
Operating Temperature	-20°C to +55°C
Sunlight Readability	Sunlight readable display
Screen Size	10.6 inches