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ADS-B FDL-DB Dual Band Series
Installation Manual
Document No. 88552 Rev A
6-54
FFS Copyright © 2020 All rights reserved.
SECTION 6
TROUBLESHOOTING
6.1
General
This section provides information for troubleshooting problems that occur after FDL-DB-XVR
installations. This section contains information on how to use the units LEDs and TC978
Controller to troubleshoot installation problems. Refer to SECTION 5 to set up and configure the
system.
6.2
FDL-DB Series LED Troubleshooting Procedure
The following is a quick reference troubleshooting guide using the FDL-DB-XVR LEDs:
Problem
Potential Cause
Troubleshooting
No LED Activity
No power
Verify power is turned on,
Check power connections to unit.
TX LED not active
Unit is not transmitting
ADS-B messages
Check antenna connections,
Check Controller Warning messages
RX LED not active
Unit is not receiving ADS-B
messages
Check antenna connections,
Check Controller Warning messages
ST LED is on
A fault with the unit
Check Controller Warning messages
ST LED is flashing
quickly
GPS fault has occurred
Check GPS connection/configuration,
Check Controller Warning messages
GPS LED is
flashing slowly
GPS is acquiring satellites
Allow 2-3 minutes for GPS tracking,
Check GPS antenna,
Check GPS for problems
GPS LED is off
GPS not communicating
Check GPS connection,
Check installation configuration
GPS LED is
flashing quickly
GPS is reporting a fault
Check GPS for fault