190-00692-00 Rev. B
Garmin G1000 Pilot’s Guide for Piper PA32
1-2
SYSTEM OVERVIEW
1.2 LINE REPLACEABLE UNITS (LRU)
•
GDU 1040
– The GDU 1040 features a 10.4-inch LCD display with 1024 x 768 resolution. The left display
is configured as a PFD and the right display is configured as an MFD. The GDU 1040 links and displays all
functions of the G1000 system during flight. The displays communicate with each other through a High-Speed
Data Bus (HSDB) Ethernet connection. Each display is also paired via an Ethernet connection with a GIA 63W
Integrated Avionics Unit.
•
GIA 63W
(2) – Functions as the main communication hub, linking all LRUs with the PFD. Each GIA 63W contains
a GPS receiver, VHF COM/NAV/GS receivers, a flight director (FD) and system integration microprocessors.
The GIA 63W also contains a GPS WAAS receiver. Each GIA is paired with a respective GDU 1040 display
through Ethernet. The GIAs are not paired together and do not communicate with each other directly.
•
GDC 74A
(1) – Processes data from the pitot/static system as well as the OAT probe. This unit provides pressure
altitude, airspeed, vertical speed, and OAT information to the G1000 system, and it communicates with the
GIA 63W, GDU 1040, and GRS 77 using an ARINC 429 digital interface. The GDC 74A also interfaces directly
with the GTP 59. The GDC 74A is designed to operate in Reduced Vertical Separation Minimum (RVSM)
airspace.
Summary of Contents for G1000:Piper
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