Garmin GTX 32 Manual de instalación - Página 26

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3.5

Electrical Load Analysis

An electrical load analysis should be completed on each aircraft prior to installation in accordance with

AC43.13-1B, Chapter 11. See Section 1.6.3 for Power Requirements. Use the following values for

Power Loads computation:

GTX 32 Input

GTX 32 Main Power

3.5.1 Circuit Breaker Placard

Install a Circuit Breaker Placard labeled Transponder or Transponder 1, Transponder 2 as appropriate as

indicated in AC 43.13-2A, Paragraph 27c(4).

3.6

Final Installation

For final installation and assembly, refer to the outline and installation drawings shown in Appendix B of

this manual.

1. Assemble the connector backshell as described in Section 3.3.

2. Attach the connector to the rear plate using the screws provided in the connector kit.

3. Mount the unit rack to the main system rack or other suitable mounting location using the provided

nutplates.

4. Assemble the rear plate into the GTX 32 unit rack.

5. Insert the GTX 32 into the rack, noting proper orientation as shown on the installation drawing in

Appendix B.

Do not use excessive force when inserting the GTX 32 into the rack. This may cause

damage to occur to the connectors, unit, and/or unit rack. If heavy resistance is felt

during installation, stop! Remove the GTX 32 and identify the source of resistance. The

rear plate is designed to float in the unit rack. Check to ensure the rear plate is not bound

by the connector harness.

6. Lock the GTX 32 in place using the lever-locking handle. Fasten the handle to the GTX 32 body

using the provided Phillips screw. (Note that some early GTX 32's use D-ring ¼-turn fastener)

Start the handle screw into the hole carefully, to avoid cross-threading. Do not apply

torque in excess of 14 in-lbs to the handle screw. The application of torque exceeding 14

in-lbs to this screw will damage the LRU case and/or retaining hardware.

Page 3-4

Revision F

Table 3-3. Unit Power Loads

14 VDC

Typical

Max.

1.1 A

1.85 A

CAUTION

28 VDC

Typical

Max.

0.6 A

0.9 A

GTX 32 Installation Manual

190-00303-60