Installation Preparation; System Overview - Garmin G3X Installation Manual

2 INSTALLATION PREPARATION

This section provides electrical and mechanical information needed for planning the physical layout of the
G3X system installation. This information is applicable to all items comprising the G3X installation. Each
LRU/Sensor has unique installation requirements. These requirement are detailed in the Installation
portion of Section 4 through Section 14.
Use all of Section 2 to become familiar with all aspects of the installation before actually beginning the
physical installation of any equipment into the aircraft. Some information from this section is repeated in
following sections of this document.
Garmin recommends that the installer become familiar with all sections of this document before beginning
the installation. The sections of this document are (as much as possible) in the order that should be
followed for most installations. In general terms, the below steps are recommended to be followed in
order.
1. Inventory of all needed parts
2. Planning/layout of the installation
3. Installation of LRUs, antennas, and sensors
4. Construction of wiring harness, cables, and connectors
5. Software installation/configuration
6. Post-installation checkout procedure and calibration

2.1 System Overview

The G3X 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, two, or three color screens. The G3X 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 mounted to the panel in the case of the GDU 37X) or in a separate
avionics bay if desired. This design greatly eases troubleshooting and maintenance of the G3X 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 (3-13) of this manual.
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G3X Installation Manual - Installation Preparation
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