Garmin G3X User Manual

190-01115-01 G3X™/G3X Touch™ Avionics Installation Manual
Rev. AV Page 2-2
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 with 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.
Figure 2-1 G3X Interconnect Example (GDU 4XX)
GDU 4XX
MFD2
(Optional)
GDU 4XX
MFD1
(Optional)
GDU 4XX
PFD1
GAD 29(B)
Data
Concentrator
(Optional)
GSU 25
ADAHRS 1
GMC 305/307
A/P Controller
(Optional)
GEA 24
Engine Analyzer
GTX
Transponder
(Optional)
No. 2 GPS/Com
(Optional*)
No. 1 GPS/Com
(Optional*)
GARMIN COM OR
NAV/COM
(Optional*)
Third-party
Digital Autopilot
(Optional)
A429
(Autopilot)
A429
(NAV)
A429
(GPS)
A429
(NAV)
RS-232
A429
(GPS)
GAP 26
Pitot/AOA
(Optional)
Static
Source
GTP 59
Temp Probe
GMU 22
Magnetometer
RS-232/
RS-485
GSA 28
Pitch Servo
(Optional)
Engine #1/
Airframe Sensors
RS-232
Notes:
*Maximum of two (2) COM/NAV
units installed.
AOA
Pitot
RS-232
RS-232
A429
(Air Data)
Static
CAN BUS
RS-232
(Optional)
RS-232
(ADS-B)
GDL 39/5XR
Traffic/Weather
Receiver (optional)
GSU 25
ADAHRS 2
(Optional)
RS-232
GSA 28
Roll Servo
(Optional)
RS-232
RS-232 (Connext)
RS-232 (GPS/COM)
GPS 20A
Position
Source
(Optional)
(Optional)
GEA 24
Engine Analyzer
Engine #2
Sensors
(Optional)
GSU 25
ADAHRS 3
(Optional)
GSA 28
Yaw Servo
(Optional)
GTR 20/200
COM Radio
(Optional)
GTR 20/200
COM Radio
(Optional)
GI 260
AOA Indicator
(Optional)
GAD 27
Elec System
Controller
(Optional)
G5 Standby
Flight Display
(Optional)
GMA 245/245R
Audio Panel
(Optional)
GMU 11
Magnetometer
GMC 507
A/P Controller
(Optional)
Analog Output From
GAD 29B Only
Third-party
Analog Autopilot
(Optional)
GSA 28
Servo
(Optional)
Pitch Trim
GSA 28
Servo
(Optional)
Roll Trim
RS-232
GDU 4XX
MFD3
(Optional)
GDU 4XX
PFD3
(Optional)
GDU 4XX
PFD2
(Optional)
GI 275
(optional)
RS-232
GHA 15
RAGL
(Optional)

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