Name: Garmin G3X Touch
Brand: Garmin
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190-01115-01 G3X/G3X Touch Installation Manual - LRU Pinouts

Rev. AC Page 25-49

25.10 GMU 22 (Magnetometer)

25.10.1 J441 Connector

Figure 25-21 J441 on GMU 22, as viewed looking at connector on unit

25.10.2 Power Function

Power-input pins accept supply voltage from ADAHRS (GSU 25/73).

25.10.3 Serial Data

25.10.3.1 RS-232

The RS-232 input pin accepts data from the ADAHRS (GSU 25/73).

25.10.3.2 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

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