FreeFlight ADS-B FDL-DB Dual Band Series Installation Information page 105

6.2.1 UAT Status LED/Discrete Fault Indications
The status LED/discrete is an indicator of a warning or fault reported by the FDL-DB-XVR. The
status LED is visible on the units or the discrete may be connected to a cockpit annunciator.
Potential faults that cause the UAT ST LED to turn on and the Status Discrete to be active
(ground) are listed below:
RF Transmission Failure
Bottom Antenna Not Connected (If DC ground check configured)
Top Antenna Not Connected (If DC ground check configured)
RF Transmission Power Too Low
GWSS not communicating or reporting fault
RF Transmit Power Supply Low
Internal Temperature Too High
RF Transmit Reverse Power Too High
Nominal Message Rate not once per second
Broadcast monitor failure – All message types not transmitted
Nominal Message Rate not once per second
Internal Power Supply Failure
UART Serial Channel Loopback Test Failure
ARINC 429 Channel Loopback Test Failure (FDL-DB-XVR)
General Processing/Interface Hardware Failure
Transceiver Hardware Check Failure
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Problem Reported
ADS-B FDL-DB Dual Band Series
Installation Manual
Document No. 88552 Rev A
Reported by
PBIT
PBIT
PBIT
PBIT
PBIT
PBIT
PBIT
PBIT
PBIT
PBIT
PBIT
PBIT
POST
POST
POST
POST
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