User Guide

190-00649-00 Rev. A
Garmin G1000 Pilot’s Guide for the Diamond DA42
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SYSTEM OVERVIEW
• GDC 74A – Processes data from the pitot/static system and outside air temperature (OAT) sensor
The Air Data Computer (ADC) provides pressure altitude, airspeed, vertical speed, and OAT information to
the G1000 System and communicates with the primary IAU, displays, and AHRS using an ARINC 429 digital
interface.
• GEA 71 – Receives and processes signals from the engine and airframe sensors
Sensor types include engine temperature and pressure sensors as well as fuel measurement and pressure sensors.
This unit communicates with both IAUs using an RS-485 digital interface.
• GTX 33 – Solid-state Transponder that provides Modes A, C, and S capability
The Transponder is controlled from the PFD and communicates with both IAUs through
an RS-232 digital
interface.