Garmin G1000 Mooney M20TN - Manual (Page 18)

Garmin G1000 Pilot’s Guide for the Mooney M20M/M20R/M20TN 190-00647-02 Rev. A 4
SYSTEM OVERVIEW
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
• GRS 77 – The Attitude and Heading Reference System (AHRS) provides aircraft attitude and heading information
via ARINC 429 to both the PFD and the primary IAU. The AHRS contains advanced sensors (including
accelerometers and rate sensors) and interfaces with the Magnetometer to obtain magnetic field information,
with the ADC to obtain air data, and with both IAUs to obtain GPS information. AHRS operation is discussed
in Section 1.5, System Operation.
• GMU 44 – The Magnetometer measures local magnetic field and sends data to the AHRS for processing to
determine aircraft magnetic heading. This unit receives power directly from the AHRS and communicates with
it via an RS-485 digital interface.
• GDL 69A – The Data Link Satellite Radio Receiver provides real-time weather information to MFD maps and the
PFD Inset Map, as well as digital audio entertainment. The Data Link Receiver communicates with the MFD
via an HSDB connection. A subscription to XM Satellite Radio Service is required to enable Data Link Receiver
capability.
• GSA 81 and GSM 85 – The GSA 81 servos are used for automatic control of pitch, pitch trim, and roll. These
units interface with each IAU.
The GSM 85 servo gearboxes are responsible for transferring the output torque of the servo actuators to the
mechanical flight-control surface linkages.