Garmin G1000 MOONEY SYSTEMOVERVIEW M20M M20R
TM
G1000
system overview for
Mooney M20M & M20R
Record of Revisions
Revision Date of Revision Revision Page Range Description
A 05/16/05 ------ Initial release.
Garmin G1000 System Overview for Mooney M20M & M20R 190-000442-01 Rev. A
SYSTEM OVERVIEW
2.1 SYSTEM DESCRIPTION
This document is designed to provide an overview
of the G1000 Integrated Cockpit System as installed in
Mooney M20M & M20R aircraft.
The G1000 system includes the following Line Re
placeable Units (LRUs):
• GDU 1040 Primary Flight Display (PFD)
• GDU 1040 Multi Function Display (MFD)
• GIA 63 Integrated Avionics Units (2)
• GEA 71 Engine/Airframe Unit
• GDC 74A Air Data Computer (ADC)
• GRS 77 Attitude and Heading Reference System
(AHRS)
• GMU 44 Magnetometer
• GMA 1347 Audio System with integrated Marker
Beacon Receiver
• GTX 33 Mode-S Transponder
• GDL 69/69A Data Link
The LRUs are further described in the following sec
tion. All LRUs have a modular design, which greatly eases
troubleshooting and maintenance of the G1000 system. A
top-level G1000 block diagram is given in Figure 2.2.1.
Additional or optional interfaces are depicted in Figure
2.2.2.
NOTE: Please refer to the Pilot’s Guide
Appendices for detailed specifications regarding
the G1000 LRUs.
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-
2.2 LINE REPLACEABLE UNITS
• 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. Both GDU 1040s link and
display 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 63 Integrated Avionics
Unit.
• GMA 1347 – The GMA 1347 integrates NAV/COM
digital audio, intercom system and marker beacon
controls. The GMA 1347 also controls manual
display reversionary mode (red DISPLAY BACKUP
button) and is installed between the MFD and the
PFD. The GMA 1347 communicates with both
GIA 63s using an RS-232 digital interface.
190-000442-01 Rev. A Garmin G1000 System Overview for Mooney M20M & M20R
2-1
SYSTEM OVERVIEW
• GIA 63 – The GIA 63 is the central Integrated Avionics Unit (IAU) of the G1000 system. The GIA 63
functions as a main communication hub, linking all
LRUs with the PFD and the MFD displays. Each
GIA 63 contains a GPS receiver, VHF COM/NAV/GS
receivers, and system integration microprocessors.
Each GIA 63 is paired with a respective GDU 1040
display through Ethernet. The GIAs are not paired
together and do not communicate with each other
directly.
• GRS 77 – The GRS 77 is an Attitude and Heading
Reference System (AHRS) that provides aircraft
attitude and heading information to both the
G1000 displays and the GIA 63s. The unit contains
advanced sensors, accelerometers and rate sensors.
In addition, the GRS 77 interfaces with both the
GDC 74A Air Data Computer and the GMU 44
Magnetometer. The GRS 77 also utilizes GPS signals
sent from the GIA 63. Attitude and heading information is sent using an ARINC 429 digital interface
to both GDU 1040s and GIA 63s. AHRS modes of
operation are discussed later in this document.
• GMU 44 – The GMU 44 Magnetometer measures
local magnetic field information. Data is sent to
the GRS 77 AHRS for processing to determine aircraft magnetic heading. This unit receives power
directly from the GRS 77 and communicates with
the GRS 77 using an RS-485 digital interface.
• GDC 74A – The GDC 74A Air Data Computer
processes information from the pitot/static system
as well as the outside air temperature (OAT) sensor.
The GDC 74A provides pressure altitude, airspeed,
vertical speed and OAT information to the G1000
system, and communicates with the GIA 63s,
GDU 1040s and GRS 77 using an ARINC 429 digital
interface.
• GEA 71 – The 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. The
GEA 71 communicates with both GIA 63s using an
RS-485 digital interface.
2-2
190-000442-01 Rev. AGarmin G1000 System Overview for Mooney M20M & M20R
SYSTEM OVERVIEW
• GTX 33 – The GTX 33 is a solid-state, Mode-S
transponder that provides Modes A, C and S operation. The GTX 33 is controlled through the PFD
and communicates with both GIA 63s through an
RS-232 digital interface.
• GDL 69/69A – The GDL 69/69A is an XM satellite radio receiver that provides real-time weather
information to the G1000 MFD. The GDL 69A
also provides digital audio entertainment in the
cockpit. The GDL 69/69A communicates with the
MFD on the High-Speed Data Bus. A subscription
to the XM Satellite Radio service is required for the
GDL 69/69A to be used.
190-000442-01 Rev. A Garmin G1000 System Overview for Mooney M20M & M20R
2-3
SYSTEM OVERVIEW
No. 1 GIA 63
Integrated Avionics Unit
System Inegration Processors
I/O Processors
VHF COM
VHF NAV/LOC
GPS
Glideslope
No. 2 GIA 63
Integrated Avionics Unit
System Integration Processors
I/O Processors
VHF COM
VHF NAV/LOC
GPS
Glideslope
GTX 33
Transponder
High-Speed Data Bus (Ethernet)
Reversionary
Control
GEA 71
Engine/Airframe
Unit
GDC 74A
Air Data
Computer
OAT
Airspeed
Altitude
Vertical Speed
GRS 77
AHRS
Attitude
Rate of Turn
Slip/Skid
GMU 44
Magnetometer
Heading
G
P
S
O
u
t
p
u
t
G
P
S
O
u
t
p
u
t
Reversionary
Control
GMA 1347
Audio Panel
GDU 1040 (PFD)
GDU 1040 (MFD)
S-TEC
Autopilot
(If equipped)
2-4
Figure 2.2.1 Basic G1000 System (Mooney)
190-000442-01 Rev. AGarmin G1000 System Overview for Mooney M20M & M20R
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