ADS-B FDL-978 Series and
Lite Series Installation Manual
Document No. 87343 Rev G
FFS Copyright © 2016 All rights reserved.
12-15
All other options during the TC978 Configuration Mode are ignored and reset to
the factory settings.
The FDL-978 Lite Series is preconfigured to simplify the installation and configuration process.
The following list shows the limited configuration options that can be set by the installer:
Mode S Address (ICAO Address)
VFR Squawk
VFR Flight ID
Groundspeed Threshold
Aircraft (Emitter) Category
Serial IN Channel 4*
Aircraft Size – length and width
GPS Antenna Offset – lateral and longitudinal offset
1090Mhz Receiver Installed
UAT Receiver Installed
The following paragraphs detail the setup modes available for configuring the FDL-978 Lite
Series. Configuration items can be changed using the CODE knob and the ENT button. Pressing
the FN button advances to the next configuration item.
12.13.2.1
Aircraft Mode S (or ICAO) Address
The Mode S address is a 24 bit number assigned to the aircraft and is represented in a six
character hexadecimal format. The CODE knob is used to change each character as required.
Each character of the Mode S address is a number between 0 to 9 or a letter between A to F.
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 ICAO address either scroll
through the six characters by pressing the ENT button six times or press the FN button.
12.13.2.2
VFR Squawk Code
VFR Squawk Code is a pre-programmed default code when the pilot is flying VFR and not in
contact with ATC. When the pilot presses the VFR button, the VFR Squawk Code will replace
the current Squawk Code. In the USA, the VFR Squawk Code is 1200 and in most parts of Europe
the VFR Squawk Code is 7000.
The default VFR Squawk Code cannot be changed in-flight and can only be set in
the configuration mode.
