Garmin G1000 Pilot's Training Guide (-05) - Page 10

Exercise 1.2: Component Review 1. Define the following equipment abbreviations and acronyms: • AHRS An Attitude and Heading Reference System is a solid-state electrical gyro system. • ADC An Air Data Computer calculates and digitizes pitot, static, and temperature inputs. • TIS The Traffic Information Service is Mode S-carried traffic awareness FAA service. • TAWS Terrain Awareness and Warning System is a TSO-C151b, Class B, certified optional feature on the, designed to increase situational awareness and aid in reducing Controlled Flight into Terrain (CFIT). • AFCS An Automatic Flight Control System provides pitch/roll steering guidance and sends commands to an autopilot to operate the flight control surfaces. 2. Describe the function of the following components of the Garmin Integrated Flight Deck: • GRS 77 The Attitude and Heading Reference System (AHRS) provides aircraft attitude and heading information to the Primary Flight Display (PFD) and the primary Integrated Avionics Unit (IAU; GIA #1). 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. • GMU 74 The tri-axis 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. • GIA 63 The Integrated Avionics Units (IAU) function as the main communications hub, linking all LRUs with the PFD. Each IAU contains VHF COM/NAV/GS receivers and system integration microprocessors. • GDU 10XX Primary Flight and Multi Function displays (PFD and MFD) show flight instruments and navigation information, respectively. GDU number may differ depending on aircraft installation. • GTX 33 The solid-state Transponder provides Modes A, C, and S capability. 6 GIFD Pilot's Training Guide 190-00368-05 Rev. B