FreeFlight ADS-B FDL-DB Dual Band Series Installation Information page 107

Warning
Generic Transmitter Fault –
TX Fault
POST, transmit, address,
broadcast, or nominal rate
failure.
Tx Power Low Transmitter power too low.
Tx PSU High Transmitter power supply
voltage too high.
Tx PSU Low Transmitter power supply
voltage too low.
Squitter Fail Transmitter modulation fault.
Remote Hot FDL-978-XVR internal
temperature too high.
No ADS-B Pos The unit is not receiving
digital serial communication
from the GPS.
GPS Fault GPS has reported no
available position or a fault.
Top Ant Fault Top antenna disconnected
Bottom Ant Fault Bottom antenna disconnected
PSU Fail Internal DC Power Supply
failure
ADC Fault Air Data Computer or Altitude
encoder fault or not
responding.
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Potential Cause
ADS-B FDL-DB Dual Band Series
Document No. 88552 Rev A
Troubleshooting
Cycle power on the FDL-DB-XVR.
Check for valid ICAO address config.
Check antennas and cabling.
Return for maintenance if problem persists.
Cycle power on the FDL-DB-XVR.
Return for maintenance if problem persists.
Cycle power on the FDL-DB-XVR.
Return for maintenance if problem persists.
Cycle power on the FDL-DB-XVR.
Return for maintenance if problem persists.
Cycle power on the FDL-DB-XVR.
Turn power off for several minutes, then back
on.
Return for maintenance if problem persists.
Verify GPS is functioning.
Verify GPS Port Configuration and speed.
Verify GPS communication connection.
Verify GPS is functioning.
Verify GPS Antenna Cable connection.
Verify GPS Antenna installation/operation.
Check UAT antenna connection.
Ensure antenna is DC grounded.
Disable DC Gnd Check in config if antennas
are not DC grounded.
Check UAT antenna connection.
Ensure antenna is DC grounded.
Disable DC Gnd Check in config if antennas
are not DC grounded.
Cycle power on the FDL-DB-XVR.
Return for maintenance if problem persists.
Verify ADC is functioning.
Verify ADC Port Configuration and speed.
Verify ADC Cable connection.
Installation Manual
6-57