Section 3 GAD 27 (Flaps/Lights/Trim Controller) Installation. Garmin G3X Touch for Experimental Aircraft, GDU 465, GDU 455, G3X, GDU 460, GDU 450

2.1.1 System Architecture and Interface Capabilities

The functionality of the G3X system is distributed between multiple interconnected devices, some of which are located in the instrument panel and some of which are remote-mounted elsewhere. An individual device in the G3X system is often referred to as a “Line Replaceable Unit”, or LRU. This term is used generically in aviation for devices that can be readily “swapped out” for troubleshooting or repair.

LRUs in the G3X system are interconnected via RS-232 interfaces and a shared CAN bus network (see

Section 2.3.1.3

). The G3X system can interface to a variety of other devices using RS-232 and ARINC 429 connections.

RS-232

GAP 26

Pitot/AOA

(Optional)

Static

Source

RS-232/

RS-485

GMU 22

Magnetometer

GMC 305/307

A/P Controller

(Optional)

RS-232

Static

GTP 59

Temp Probe

GDU 370

PFD1

Pitot

AOA

RS-232

(Optional)

GSU 25

ADAHRS 1

GI 260

(Optional)

GSU 25

ADAHRS 2

(Optional)

GSU 25

ADAHRS 3

(Optional)

GSA 28

Pitch Servo

(Optional)

GSA 28

Yaw Servo

(Optional)

GSA 28

Roll Servo

(Optional)

RS-232

GAD 29

Data

Concentrator

(Optional)

Third-party

Autopilot

(Optional)

CAN BUS

RS-232

RS-232

GTX

Transponder

(Optional)

GDU 375

PFD2

(Optional)

GDU 370

MFD

(Optional)

GEA 24

Engine Analyzer

(Optional)

A429

(NAV)

A429

(GPS)

A429

(Air Data)

RS-232

(ADS-B)

No. 1 GPS/Com

(Optional*)

RS-232 RS-232

Engine/Airframe

Sensors

GDL 39/39R

ADS-B Traffic and

Weather Receiver

(Optional)

Stereo/

Mono

GTR 200 (Optional)

A429

(NAV)

A429

(GPS)

No. 2 GPS/Com

(Optional*)

RS-232

G5 Standby Flight

Display (Optional)

GMA 240

Audio Panel

(Optional) A429

(Autopilot)

Notes:

*Maximum of two (2) COM/NAV units installed.

**Same as (*) plus GDU to SL40 is TX-only.

GARMIN COM OR

NAV/COM

(Optional**)

Figure 2-1 G3X Interconnect Example (GDU 37X)

GPS 20A Position

Source (Optional)

GMU 11 Magnetometer

(Optional)

GMC 507

A/P Controller

(optional)

190-01115-01

Rev. AN

G3X/G3X Touch Installation Manual - Installation Preparation

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