GTX 330/330D Installation Manual 190-00207-02
Page 2-2 Rev. U
2.2.2 Equipment Available
2.2.3 Additional Equipment Required
• Cables - The installer will supply all system cables including circuit breakers. Cable requirements
and fabrication are detailed in
Section 3 of this manual.
• Hardware - #6-32 x 100° Flat Head SS Screw [(MS24693, AN507R or other approved fastener)
(6 ea.)] and #6-32 Self-Locking Nut [MS21042 or other approved fastener (6 ea.)]. Hardware
required to mount the installation rack is not provided.
• Encoding Altitude Digitizer - Use encoding altimeter manufacturer’s instructions, install accord-
ing to FAA Advisory Circulars AC 43.13-1B and AC 43.13-2B. The Garmin GAE 43 (Garmin
P/N 013-00066-00) can provide altitude data in either serial or parallel gray code format.
2.3 Installation Considerations
The GTX 330 can interface with equipment including altimeters, Air Data Computer (ADC) and a
temperature probe. RS-232 and ARINC 429 provide a serial communication path between interfacing
equipment. Fabrication of a wiring harness is required.
Optional available discrete line interfaces are described in
Section 4.5.2, Discrete Inputs, and shown in
installation diagrams provided in
Appendix D.
Table 2-2 Equipment Available
Item Garmin P/N
Sub Assy, Connector Kit, GTX 330 011-00583-00
SMP, Install Rack, GTX 330 115-00294-00
Sub Assy, Backplate, GTX 330, BNC 011-00582-00 (For use with GTX 330)
Sub Assy, Backplate, GTX 330D, BNC 011-00582-01 (For use with GTX 330D)
Sub Assy, Backplate, GTX 330, TNC 011-00582-04 (For use with GTX 330)
Sub Assy, Backplate, GTX 330D, TNC 011-00582-05 (For use with GTX 330D)
Garmin GTX 330 Antenna kit* (two required for
diversity)
010-10160-00
*A transponder antenna approved to TSO C66( ) or C74( ) that has been installed to meet the
requirements of this manual may be approved for use with the GTX 330.
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