Altitude Sources; Table C-3 Altitude Sources - Garmin GTX 3X5 Installation Manual

C.3

Altitude Sources

Manufacturer Model
ACT Tech A-30
B&D 90004-003
G950/G1000
GDC 74( )
Garmin GDU 620
GTN 6XX/7XX
GAE 12
KDC 281
Honeywell (Bendix/
King)
KDC 481
Icarus Instruments 3000
Sandia SAE 5-35
190-01499-02
Rev. 4

Table C-3 Altitude Sources

Interfacing GTX 335
Equipment Configuration
Configuration Setting
N/A ALT FMT 1 25ft
N/A ADC
GEN PURPOSE
N/A
(Speed: HIGH)
N/A ADC
GENERAL EFIS AIR DATA
(Speed: HIGH) (Speed: HIGH)
GTX Mode S+ [1] REMOTE FMT 1 [1]
OR OR
GTX w/TIS+ [2] REMOTE FMT 2 [2]
Garmin Altitude
N/A
Encoder: Present
N/A ADC
N/A ADC
N/A ALT FMT 1 100ft
N/A ALT FMT 1 25ft
N/A Gillham Discretes ON
GTX 345
Configuration
Setting
ALT FMT 1 25 ft
ADC
Refer to STC for installation guidance. Interface is primarily for
EFIS AIR DATA providing true heading to the GTX, however this format also
(Speed: HIGH) provides altitude refer to table C-6. Required if external traffic
system is installed.
ADC
EFIS AIR DATA
(Speed: HIGH)
REMOTE FMT 1 [1] This configuration is primarily for purposes of transponder
OR remote control, however this configuration also provides altitude
REMOTE FMT 2 [2] data. Refer to table C-9.
Garmin Altitude
Encoder: Present
ADC
ADC
ALT FMT 1 100 ft
ALT FMT 1 25 ft
Either RS-232 or Gillham Gray code format can be used to
provide altitude data from the Sandia SAE 5-35 to the GTX 3X5.
Gillham Discretes ON
GTX 3X5 Transponder TSO Installation Manual
Notes
Page C-4