Garmin G1000 Mooney M20TN - Manual (Page 12)

Garmin G1000 Pilot’s Guide for the Mooney M20M/M20R/M20TN 190-00647-00 Rev. A 1-2
SYSTEM OVERVIEW
1.2 LINE REPLACEABLE UNITS
• GDU 1040/1042 (2) – A GDU 1040 is configured as the Primary Flight Display (PFD) and a GDU 1040 or
1042 (for airframes equipped with the GFC 700) as a Multi Function Display (MFD). Both displays feature
10.4-inch LCD screens with 1024 x 768 resolution. 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 – The Audio Panel integrates navigation/communication radio (NAV/COM) digital audio, intercom,
and marker beacon controls, and is installed between the displays. This unit 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) – The Integrated Avionics Units (IAU) function as the main communications hub, linking all LRUs
with the PFD. Each IAU contains very high frequency (VHF) communication/navigation/glideslope (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.