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Post-Installation Configuration & Checkout
Settings
UAT Failure Annunciator
usage
Air/Ground Indication
TCAS installation
Altitude source
Control Panel source
UAT Antenna mode
DC-grounded UAT
antenna
Aircraft GPS Antenna
Length & Width Offset
GPS Antenna Delay
Top UAT Antenna Delay
Bottom UAT Antenna
Delay
ARINC 429 ADC port
setup
ARINC 429 AHRS port
setup
Air/Ground Audio
Volume
4-4
Format
Description
x
0 =as UAT Fail Indicator
The GDL 90's UAT Fail discrete output that can be set to function
in 2 different ways. Refer to Section 2.8.4.1for more details.
x
1 =airborne open 2 =on-ground open
If GDL 90 is connected to the aircraft's air/ground switch, enter the
orientation of the switch.
x
0 = TCAS not installed
1 = TCAS installed without interface (to GDL 90)
2 = TCAS installed with interface (to GDL 90)
The TCAS interface is not currently approved for installation or
use. "0" must be entered for TCAS not installed. See Section 3.2.
x
0 =none
3 =via an ARINC-429 device
Indicates how GDL 90 obtains altitude information.
x
0 =none
Indicates how GDL 90 obtains user input information.
x
0 = dual
Indicates whether the GDL 90 is connected to 1 or 2 antennas.
x
N = no
Indicates whether the installed UAT antenna(s) can be tested by the
GDL 90's grounding the antenna(s).
<int> <int>
<length offset> <width offset>
Length offset = distance from aircraft nose to GPS antenna
Width offset = distance from aircraft center line to GPS antenna
integer
0 to 65534 in nanoseconds
It's recommended that zero be entered for most installations where
antenna cable is not excessively long.
integer
0 to 65534 in nanoseconds
It's recommended that zero be entered for most installations where
antenna cable is not excessively long.
integer
0 to 65534 in nanoseconds
It's recommended that zero be entered for most installations where
antenna cable is not excessively long.
x y
x: 1 = port 1 2 = port 2 3 = port 3 0=not installed
y: L = Low speed
Indicates how ADC interfaces to the GDL 90.
Ex: (1 L) indicates ADC is connected through port 1 and it's a
low-speed ARINC 429.
x y
x: 1 = port 1 2 = port 2 3 = port 3 0=not installed
y: L = Low speed
Indicates how AHRS interfaces to the GDL 90.
Ex: (2 H) indicates AHRS is connected through port 2 and it's a
high-speed ARINC 429.
<int> <int>
<air> <ground>
Indicates audio volume when aircraft is in the air and on ground.
560-1049-00 Rev B
1 =as GPS Valid indicator
1 =RxD Port 2
2 =via MFD
4 =RxD Port 6
1 =via MFD
2 =dedicated control panel
1 = top
2 = bottom
Y = yes
0 to 200 feet
H = High speed
H = High speed
0 to 31
0 =not available
5 =RxD Port7
GDL 90 Installation Manual
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