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

C.3

Altitude Sources

Manufacturer Model
ACT Tech A-30
B&D 90004-003
G950/G1000
GDC 74( )
GDU 620
Garmin
GTN 6XX/7XX
GAE 12
KDC 281
Honeywell
(Bendix/King)
KDC 481
Icarus
3000
Instruments
Sandia SAE 5-35
190-01499-02
Rev. 9

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+
REMOTE FMT 1 [1]
[1]
OR
OR
REMOTE FMT 2 [2]
GTX w/TIS+ [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
Equipment Compatibility and Configuration
GTX 345
Configuration
Setting
ALT FMT 1 25 ft
ADC
Interface is primarily for providing true heading to
EFIS AIR DATA the GTX, however this format also provides
(Speed: HIGH) altitude. Refer to table C-6. Required if external
traffic system is installed.
ADC
EFIS AIR DATA
(Speed: HIGH)
This configuration is primarily for purposes of
REMOTE FMT 1 [1]
transponder remote control, however this
OR
configuration also provides altitude data. Refer to
REMOTE FMT 2 [2]
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