FreeFlight ADS-B FDL-978 Series Installation Manual page 114

ADS-B FDL-978 Series and
Lite Series Installation Manual
Document No. 87343 Rev F
Warning
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.
4-4
Potential Cause Troubleshooting
Check antennas and cabling.
Return for maintenance if problem persists.
Cycle power on the FDL-978 Lite Series and
FDL-978-XVR. Return for maintenance if
problem persists.
Cycle power on the FDL-978 Lite Series and
FDL-978-XVR. Return for maintenance if
problem persists.
Cycle power on the FDL-978 Lite Series and
FDL-978-XVR. Return for maintenance if
problem persists.
Cycle power on the FDL-978 Lite Series and
FDL-978-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-978 Lite Series and
FDL-978-XVR. Return for maintenance if
problem persists.
Verify ADC is functioning.
Verify ADC Port Configuration and speed.
Verify ADC Cable connection.
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