Garmin G3X Touch Pilot's Manual page 21

• GSU 73
Garmin Sensor Unit sub-system for the G3X Touch (Air Data Computer (ADC),
–
Engine/Airframe Unit, and the Attitude and Heading Reference System (AHRS))
– ADC: Processes data from the pitot-static system and outside air tem-
perature (OAT) sensor.
– Engine/Airframe Unit: Receives and processes signals from the engine
and airframe sensors.
– AHRS: Provides aircraft attitude and heading information to the PFD.
The AHRS contains advanced sensors (including accelerometers and rate
sensors) and interfaces with the Magnetometer to obtain magnetic field
information, with the ADC to obtain air data, and with the GDU to obtain
GPS information. AHRS operation is discussed later in this section.
– ARINC 429 interface: Transmits and receives ARINC 429 signals for inter-
face to panel-mount IFR GPS navigators.
190-01754-00 Rev. E
GSU 73
Garmin G3X Touch Pilot's Guide
System Overview
3