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OM20 Universal Outdoor Modem
7.1.1.2 Major Rx Alarms
Alarm
FPGA CFG
DSP CFG
SIGNAL LOCK
FRAME LOCK
MULTIFOME LOCK
LB SYNTH PLL
IF SYNTH PLL
Ethernet WAN
7.1.1.3 Minor Tx Alarms
Alarm
TERR CLK ACT
TERR DATA ACT
TX TERR AIS
DnI FRAME LOCK
DnI M-FRAME LOCK
TX DVB FRAME LOCK
BUC CURRENT
BUC VOLTAGE
TM116 – Rev. 1.2
Possible Cause
Indicates a receive FPGA hardware failure.
Indicates a receive DSP failure.
Indicates that the demod is unable to lock to a signal.
Indicates that the FRMing Unit is unable to find the expected
framing pattern.
Indicates that the FRMing Unit is unable to find the expected
framing pattern.
Indicates that the Rx L-Band Synthesizer is not locked. This
alarm will flash on during certain modem parameter
changes. A solid indication points toward a configuration
problem within the modem.
Indicates that the Rx IF Synthesizer is not locked. This
alarm will flash on during certain modem parameter
changes. A solid indication points toward a configuration
problem within the modem.
Indicates that the WAN Port is down.
Possible Cause
Indicates no Terrestrial Clock activity.
Indicates no Tx Data activity.
Indicates that AIS has been detected in the Tx Data Stream.
When running Drop Mode, indicates that the framing unit is
unable to find the exported terrestrial framing pattern.
When running Drop Mode, indicates that the framing unit is
unable to find the exported terrestrial framing pattern.
Indicates that the Tx Input Data Stream FRMing does not
match the user selected Tx Terr FRMing. Incorrect Tx Terr
FRMing selected. Incorrectly framed Tx Input Data Stream.
Indicates that current is either below or above the threshold
limits of the BUC, as specified by the modem. Only active
when voltage is enabled.
Indicates that the voltage is not functioning correctly when
voltage is enabled.
Maintenance and Troubleshooting
7-3
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