Comtech EF Data SDM-9000 - Manual (Page 100)

Operation SDM-9000 Satellite Modem
4–26 Rev. 4
4.2.3.2 Demodulator Faults
CARRIER DETECT Carrier detect fault.
Indicates the decoder is not locked.
IF SYNTHESIZER Demodulator IF synthesizer fault.
Indicates the IF synthesizer is not locked.
RX CLOCK SYN RX data clock synthesizer fault.
Indicates a loss of lock on the reference of the demodulator clock
recovery oscillator.
I CHANNEL I channel activity fault.
Indicates a loss of activity in the I channel of the quadrature
demodulator.
Q CHANNEL Q channel activity fault.
Indicates a loss of activity in the Q channel of the quadrature
demodulator.
DESCRAMBLER Descrambler activity alarm.
Indicates a loss of activity in the descrambler.
BER THRESHOLD BER threshold set in the Configuration Demod menu.
MODULE Demodulator/decoder module fault.
Typically indicates that the Demod/decoder module is missing or will
not program.
PROGRAMMING Demodulator programming fault.
CONFIGURATION Demodulator configuration fault.
Indicates the demodulator cannot execute a programmed
configuration parameter.