Installation Instructions
ADS-B FDL-DB Dual Band Series
Installation Manual
Document No. 88552 Rev A
5-6
FFS Copyright © 2020 All rights reserved.
Interface
Description
Display Output
ADS-B traffic and FIS-B data output can be sent to one or more displays
simultaneously. A display control can also be configured to provide the
Control Input. Three different Serial Ports can be configured to
simultaneously provide display output:
• Display on Serial Port 3
• Display on Serial Port 5
• Display on either Port 2 or 6
• Display on either Network Server Port 1 or 2
ARINC OUT1 can also be configured to output ARINC 735A/B Intruder
Traffic.
GPS Output
FDL-DB Dual Band Series models with Internal GPS can output GPS
position, velocity, time, and integrity data via RS-232. Internal GPS models
will automatically output GPS data in the FFS/Chelton Protocol on port 1.
GPS Predictive
RAIM
FDL-DB Dual Band Series models with Internal GPS can receive and
respond to serial predictive RAIM (PRAIM) requests for a destination or
alternate waypoint through RS-232. A Flight Management System (FMS)
can request the GPS to provide a RAIM prediction on Serial Port 1 input.
PRAIM responses will be sent on Serial Port 1 RS-232 output
The installer should configure Serial and ARINC ports to specific data functions which provide
the necessary data interfaces. All data interface types (except Display Output) from the table
above can be configured to one and only one Serial or ARINC port.
If multiple Serial/ARINC ports are set to the same data interface type, then only one port is
actually configured and other settings of the same data interface type are ignored. The data
interface order of precedence is as follows:
1. ARINC 429 ports take precedence over UART Serial ports
2. Lowest port channel number takes precedence over higher channel number
For example, if the FDL-DB Dual Band Series has an internal GPS and serial in 1 is set to
GPS-Internal and ARINC in 1 is set to GPS-743, then the FDL-DB Dual Band Series will not
receive GPS data from the internal GPS.
Set only one Control Input, only one Altitude Input, and only one GPS Input.
Inadvertently setting more than one of the same input type may result in the correct
input data not being received.
Only ONE function can typically be set to either the input or output of each bi-
directional Serial Port (2, 3, 5, or 6). If the serial port input is set to a function, then
the output should be set to ‘UNUSED’ and vice versa. If a Serial port’s input and
output are both set only one setting is configured and unexpected operation can
occur. The exception is if a display output is set on a port output then the port input
can be set to display control otherwise the input should be set to ‘UNUSED’. (See
paragraph 5.1.1.1 and 5.1.1.2 for details).
Control Input is not required for receive only systems.