190-00734-17
GTX 335 w/GPS Installation Guidance
Rev. 1
Page C-2
C.1 Altitude Source
Air data computers not listed below can still be approved under this STC if all of the following conditions are met: The air data computer provides the following
labels:
•
203 - Pressure Altitude
•
204 - Barometric-Corrected Altitude
•
210 - True Airspeed
The interface check for the altitude encoder described in section 7 must be successfully completed. The installation of the air data computer was previously FAA-
approved. The air data computer is TSO approved. The connections to the GTX must utilize shielding wiring of the type specified in this manual. Shields must be
terminated on the GTX side to connector shield block ground and on the Air Data Computer side in accordance with the Air Data Computer installation data. If the
Air Data Computer installation data does not specify a shielding method then terminate the shield at the Air Data Computer using the guidelines provided in
section 4.
Manufacturer
Model
Config
Parameter
Interfacing
Equipment
Configuration
GTX 335 Config
Summary Setting
GTX 335 Wizard Tool Configuration
Notes
Garmin
GDC 74( )
ARINC 429
N/A
ADC
(Speed: Low)
ADC
(Speed: Low)
GDU 620
ARINC 429
GENERAL
PURPOSE 1
(Speed:
HIGH)
EFIS AIR DATA
(Speed: HIGH)
EFIS Air Data
(Speed: Low)
This interface also provides
heading data.
GAE
Configuration
Module Port
N/A
Garmin Altitude
Encoder: Present
GAE-12 Installed: Yes
ACK Tech
A-30
RS-232
N/A
ALT FMT 1 25 ft
Device: Altitude/Air Data Device
Input: Sandia/Icarus/ACK
Compatible Altitude Encoder
Resolution: 25 foot
Mod 8 or higher.
B & D
90004-003
ARINC 429
N/A
ADC
(Speed: Low)
ADC
(Speed: Low)