User Guide

190-00649-00 Rev. A

Garmin G1000 Pilot’s Guide for the Diamond DA42

1-2

SYSTEM OVERVIEW

1.2 LINE REPLACEABLE UNITS

• GDU 1040 (2) – The GDUs feature 10.4-inch LCD screens with 1024 x 768 resolution. The left display is

conﬁgured as a Primary Flight Display (PFD) and the right display is conﬁgured as a Multi Function Display

(MFD). The displays communicate with each other through a High-Speed Data Bus (HSDB) Ethernet connection.

Each display is also paired with an Ethernet connection to an IAU.

•

GMA 1347

– Integrates navigation/communication radio (NAV/COM) digital audio, intercom, and marker

beacon controls, and is installed between the displays

The Audio Panel also provides manual control of display reversionary mode (red

DISPLAY BACKUP

button; see

Section 1.5, System Operation) and communicates with both IAUs using an RS-232 digital interface.

•

GIA 63

(2) – Function as the main communications hub, linking all LRUs with the PFD

Each Integrated Avionics Unit (IAU) contains VHF COM/NAV/GS receivers and system integration

microprocessors and is paired with the on-side display via an HSDB connection. The IAUs are not paired

together and do not communicate with each other directly.