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2.7

GTX 32 Mounting Requirements

The GTX 32 mounting surface must be capable of providing structural support and electrical bond to the

aircraft to minimize radiated EMI and provide protection from High-Intensity Radiation Fields (HIRF).

The GTX 32 can be mounted using the G1000 main system rack, or may be mounted remotely if desired.

Figure 2-2 shows the GTX 32 unit rack. The unit rack is fastened to the main system rack using the

nutplate kit listed in Section 2.2. Refer to Figure B-2, GTX 32 Rack/Connector Assembly Drawing, for

nutplate placement locations. The installer must provide any additional remote mounting equipment.

2.7.1 Remote Mounted Stand-Alone Rack Considerations

Figure 2-3 and Figure B-3 Sheets 1 & 2 show the GTX 32 remote mounted stand-alone rack. The remote

rack can be installed in a variety of locations, such as the electronics bay, under a seat or on an avionics

shelf behind the rear baggage area. Refer to Figure 2-4 for suggested location. Leave sufficient clearance

between the GTX 32 and any obstruction. Install the rack in accordance with AC 43.13-2A Chapter 2

"Radio Installations." The rack should be mounted to a surface known to have sufficient structural

integrity to withstand additional inertia forces imposed by a 3.4-pound (1.54 kg) unit. If it is necessary to

build a shelf or bracket to mount the GTX 32 stand-alone rack or it is not certain that the chosen location

is of sufficient structural integrity, refer to Appendix A for validation of rack mounting structures and

determining static load capability.

Figure B-3 Sheet 2 gives the GTX 32 stand-alone rack dimensions. The rack can be mounted vertically

using four 8-32 pan head screws (MS35206, AN526 or other approved fastener). It can also be mounted

horizontally using four 6-32 100° counter-sunk flathead screws (MS24693, AN507R or other approved

fastener). Ensure that the GTX 32 chassis has a ground path to the airframe by having at least one

mounting screw in contact with the airframe. If more water-resistance is desired, the rack should be

installed in the upright vertical orientation only, otherwise, the rack may be mounted in either vertical or

horizontal orientation.

After the cable assemblies are made and wiring installed to the rack back plate, route wiring bundle as

appropriate. Use cable ties to secure the cable assemblies and coax to provide strain relief for the cable

assemblies.

Page 2-6

GTX 32 Installation Manual

Revision F

190-00303-60