Lynx NGT-9000
Installation Manual
5.
In Air / On Ground
The following options are setup based on the emitter category selected (aircraft type) and the In Air / On
Ground selections.
•
A fixed wing aircraft with a ground discrete installed requires the following options: “Max Ground
Speed” and “Discrete Override Speed”.
•
A fixed wing without discrete requires the following options: “Max Ground Speed”, “GPS Altitude”,
and “Pressure Altitude”.
•
A rotorcraft with discrete requires the following option: “Max Ground Speed”.
•
A rotorcraft without discrete requires the following options: “Max Ground Speed”, “GPS Altitude”,
and “Pressure Altitude”.
a.
On Ground Discrete Installed
: This is the WOW input, Discrete 3 input. See J1 Pin 29.
•
Not Installed
•
Open – Ground on Ground
•
Open – On Ground
b.
Ground Speed Thresholds (knots)
•
Max Ground Speed
: The valid range is 30 to 100. Typically 70% of Vs0. Must be less
than or equal to the Discrete Override Speed.
This is the upper threshold speed which aircraft is considered on ground. Ground speeds
below this level place the unit in the Ground state. Fields that become inhibited get set to
zeros. As fields become uninhibited the values are reset to defaults.
•
Discrete Override Speed
: Applicable only when On Ground Discrete installed and not a
Rotorcraft. When applicable, the valid range is 30 to 100, typically 130% of Vs1, and
must be greater than or equal to Max Ground Speed.
This is the lower threshold speed which aircraft is considered in air. Ground speeds above
this level place the unit in the In Air state, overriding the discrete switch.
c.
Altitude Thresholds (feet)
•
GPS Altitude
: The valid range is 0 to 500.
This value is used for fixed wing and rotorcraft installs that do not have an air/ground
discrete. This is the lower limit threshold difference in GPS altitude after Power ON at
which aircraft is considered in air. A change in GPS altitude above this level places the
unit in the In Air state.
•
Pressure Altitude
: The valid range is 0 to 500.
This value is used for fixed wing and rotorcraft installs that do not have an air/ground
discrete. This is the lower limit threshold difference in pressure altitude after Power ON at
which aircraft is considered in air. A change in pressure altitude above this level places the
unit in the In Air state.
6.
Click on the Apply button after all information is entered. This information is saved to the
configuration module.
0040-17001-01
Installation Checkout
Page 3-15
Revision A
January 15, 2015
