System Overview - Garmin G300 Installation Manual

1.3

System Overview

The G300 is an advanced technology avionics suite designed to integrate pilot/aircraft interaction into one
central system. The system combines primary flight instrumentation, aircraft systems instrumentation,
and navigational information, all displayed on one or two color screens. The G300 system is composed
of several sub-units or Line Replaceable Units (LRUs). LRUs have a modular design and can be installed
directly behind the instrument panel or in a separate avionics bay if desired. This design greatly eases
troubleshooting and maintenance of the G300 system. A failure or problem can be isolated to a particular
LRU, which can be replaced quickly and easily. Each LRU has a particular function, or set of functions,
that contributes to the system's operation. For additional information on LRU functions, see the
applicable section of this manual.
1.3.1 System Architecture
Figure 1-1 illustrates the communication paths that are in place in a typical G300 installation.
Static
GMU 44
RS-485
GTP 59
Page 1-2
Revision A
GDU 370
(PFD )
Pitot
GSU 73
Figure 1-1. G300 Interconnect Summary
CAN
RS-232
G300 Installation Manual –Installation Overview
OPTIONAL
G DU 375
(MFD)
RS-232
40
(not included in
the G300 system)
GTX 327
(not included in
the G300 system)
190-00921-01