ADS-B FDL-978 Series and
Lite Series Installation Manual
Document No. 87343 Rev G
3-52
FFS Copyright © 2016 All rights reserved.
3.6.2.20
GPS Reference Position Offset
There are three modes by which the GPS reference offset can be set:
Unknown
Auto set by GPS
Manual set here
The display screen is as shown below with one of the options from the list above.
Rotate the CODE knob either clockwise or counterclockwise to display the options above and
select the correct GPS reference offset. Once selected, press the ENT button to confirm your
selection. If “Unknown” or “Auto Set by GPS” is selected the next configuration item in the setup
mode will be displayed. If “Manual Set here” is selected then options for manually entering the
GPS antenna reference offset are displayed as below:
The antenna distance from the nose can be entered anywhere between 2 meters to 60 meters
by rotating the CODE knob either clockwise or counterclockwise to display the correct distance.
Once selected, press the ENT button to confirm selection and move to the lateral offset
configuration item in the setup mode.
The antenna lateral offset has the following options that can be selected:
Unknown
Left 0-2 meters
Left 2-4 meters
Left 4+ meters
Central
Right 0-2 meters
Right 2-4 meters
Right 4+ meters
The display screen is as shown below with one of the options from the list above.