G1000 System Components; Gdu 1040; Figure 2 Gdu 1040 (Pfd Shown) - Garmin G1000:Beechcraft Baron 58/G58 Pilot's Manual

The main components of the G1000 system are the two GDU 1040 displays used for the Primary Flight Display (PFD) and the Multi
Function Display (MFD), and the two GIA 63 Integrated Avionics Units (IAUs). These components are interfaced with each other via
a proprietary Ethernet-based, high-speed digital databus system. All other components, such as the Attitude and Heading Reference
System (AHRS), Air Data Computer (ADC), transponder and Engine/Airframe Interface units, use combinations of RS-232, ARINC 429
and RS-485 interfaces.

GDU 1040

Both GDU 1040 displays are identical in hardware. The aircraft wiring harness determines whether the display functions as a PFD
or an MFD (see Figure 2). A configuration module within the PFD connector contains aircraft-specific backup configuration data.
Failure Mode(s)
If one display fails, the primary flight instruments and Engine Indication System (EIS) are displayed on the remaining screen. No
moving map is presented in this mode (see Figure 3). This operating mode is called "reversionary mode" and may be either detected
automatically by the system, or initiated manually via the red DISPLAY BACKUP button located on the lower portion of the audio
panel.
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G1000 SYSTEM COMPONENTS

Figure 2 GDU 1040 (PFD Shown)

Garmin G1000 Guide for Designated Pilot Examiners & Certified Flight Instructors
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