GMU 44 MAGNETOMETERS
The GMU 44 magnetometer units measure local magnetic eld information.
Data is sent to the GRS 77 AHRS for processing to determine aircraft
magnetic heading. These units receive power directly from the GRS 77 units
and communicate with the GRS 77 units using RS-485 digital interface.
GDC 74A AIR DATA COMPUTER
The GDC 74A Air Data Computers process information received from the
pitot/static systems and Outside Air Temperature (OAT) Sensors. The GDC
74A units provide pressure altitude, airspeed, vertical speed, and OAT
information to the G1000 system. The GDC 74A ADC units communicate with
GIA 63 units, GDU 1040 displays, and the GRS 77 AHRS using ARINC 429
digital interface.
GEA 71 ENGINE/AIRFRAME INTERFACE
The GEA 71 receives and processes signals from 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 63 units using an RS-485 digital interface.
GTX 33 MODE S TRANSPONDER
The GTX 33 is a solid-state Mode S transponder providing Mode A, C, and S
functions. The GTX 33 is controlled through either PFD, and communicates
with both GIA 63 units through an RS-232 digital interface.
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