ADS-B FDL-978 Series and
Lite Series Installation Manual
Document No. 87343 Rev G
FFS Copyright © 2016 All rights reserved.
3-43
The VFR Flight ID is an eight character alpha-numeric string. The CODE knob is used to
change each character as required. Each character of the Flight ID is a number between 0 to 9
or letter between A to Z. When the ENT button is pressed the cursor advances to the next
character as shown below.
To advance to the next configuration item without changing the VFR Flight ID either scroll through
the eight characters by pressing the ENT button eight times or press the FN button.
The VFR Flight ID cannot be changed in-flight and can only be set in the
configuration mode.
3.6.2.4 Groundspeed Threshold
Groundspeed threshold can be used to help determine and verify the ON GROUND condition for
transmitting ON GROUND ADS-B message types for “Light Fixed Wing” aircraft types only. The
FDL-978-XVR uses the ground speed threshold configuration to determine a maximum ON
GROUND speed. There are 10 options to select groundspeed threshold:
Unknown
30 knots
40 knots
50 knots
60 knots
70 knots
80 knots
90 knots
100 knots
120 knots
This only applies to an Emitter Category of Light Aircraft – no other categories use
a configurable groundspeed threshold.
The display screen is as shown below with one of the options from the list above.
Rotate the CODE knob to display the options above and select the groundspeed threshold.
Once selected, press the ENT button to confirm your selection and move to the next
configuration item in the setup mode.
