ADS-B FDL-DB Dual Band Series
Installation Manual
Document No. 88552 Rev A
5-8
FFS Copyright © 2020 All rights reserved.
5.1.1.1 Serial Port Input Configuration
The following tables define the serial port input data formats and baud rate settings:
Table 3. Serial Port Input Configuration Settings
Setting
(1)
Interface
Description
UNUSED
(Not Used)
-
No connection to serial port
ADS
(Air Data Computer)
Altitude
Input
Altitude, Airspeed, and Vertical Rate data input. Format for
air data sensors using the protocol in Section 4.2.
Alt-Encoder
(Altitude Encoder)
Altitude
Input
Altitude data. Format for air data sensors using the
protocol in Section 4.1.
Internal-GPS
(GPS Internal)
GPS Input
GPS position, velocity, time, and integrity data input and
output. Selects use of the internal GPS (models with GPS
only). Baud rate must be set to 19200. Internal GPS is
only valid for serial port 1.
The internal GPS data is used
by the FDL-DB Dual Band Series and GPS data is
automatically output at 19200 baud on serial output
port 1 using the FFS/Chelton Protocol. The output is
TSO-C145c Class Beta 1 certified and can be used as
an ADS-B position source or navigation source.
GPS-FFS
(5)
(GPS - FreeFlight)
GPS Input
GPS position, velocity, time, and integrity data input.
Format for the FFS 1201 or other sensors that support the
FFS/Chelton Protocol. Typically configured on port 1.
GPS-ADS-B Plus
(5)
(GPS - GNS ADS-B)
GPS Input
GPS position, velocity, time, and integrity data input.
Format for the Garmin Series 400/500 ADS-B Plus GPS
Protocol.
GSL-71
(Control Panel)
Control
Input
(2)
Squawk Code, IDENT, Call Sign, mode (standby/alt
inhibit), and altitude data input. Format for the GSL-71
controller or SL70/R transponder.
(6)
GTX-Remote
(GTX Remote)
Control
Input
(2)
Squawk Code, IDENT, and mode (standby/alt inhibit)
control input format from GTX 330/33/327/32
transponders.
) (6)(7)
Disp-Cntrl
(TIS/FIS)
Control
Input
(3)
Squawk Code, IDENT, Call Sign, and mode (standby/alt
inhibit). Enables display control from an MX-20, GMX-200,
or other displays using the GDL/FDL protocol. The
corresponding serial output port must be configured to
TIS-FIS or MX-20 at the same baud rate to enable display
control input.
(2) (6)
(1)
MPI setting names are listed first with TC978 configuration menu names in
parenthesis ().
(2)
Control Input is not required for receive only systems.
