Alarm Faults - Comtech EF Data Radyne DMD1050 Installation And Operation Manual

DMD1050 Satellite Modem Board

5.2.1 Alarm Faults

5.2.1.1 Major Tx Alarms
Alarm
FPGA CFG
DSP CFG
SCT Clock PLL
SYM Clock PLL
LB Synth PLL
Ethernet WAN
5.2.1.2 Major Rx Alarms
Alarm
FPGA CFG
DSP CFG
SIGNAL LOCK
FRAME LOCK
MULTIFRAME LOCK
LB SYNTH PLL
Ethernet WAN
5.2.1.3 Minor Tx Alarms
Alarm
TERR CLK ACT
TERR DATA ACT
TX TERR AIS
TX DVB FRAME LOCK
MN-DMD1050
Revision 9
Shows a transmit FPGA hardware failure.
Shows a transmit FPGA failure.
Shows that the Tx SCT Clock PLL is not locked. This alarm flashes during certain
parameter changes. A steady display shows a problem in the modem configuration.
Shows that the Tx Symbol Clock PLL is not locked. This alarm flashes during certain
parameter changes. A steady display shows a problem with the incoming clock to the
modem (SCTE).
Shows that the Tx L-Band Synthesizer is not locked. This alarm flashes during certain
parameter changes. A steady display shows a configuration problem in the modem.
Shows that the WAN Port is down.
Shows a receive FPGA hardware failure.
Shows a receive DSP failure.
Shows that the demod is unable to lock to a signal.
Shows that the Framing Unit is unable to find the expected framing pattern.
Shows that the Framing Unit is unable to find the expected framing pattern.
Shows that the Rx L-Band Synthesizer is not locked. This alarm flashes during certain
parameter changes. A steady display shows a problem in the modem configuration.
Shows that the WAN Port is down.
Shows no Terrestrial Clock activity.
Shows no Tx Data activity.
Shows that AIS has been detected in the Tx Data Stream.
Shows that the Tx Input Data Stream Framing does not match the selected Tx Terr
Framing. Incorrect Tx Terr Framing is selected. Incorrectly framed Tx Input Data
Stream exists.
Maintenance and Troubleshooting
Possible Cause
Possible Cause
Possible Cause
5–2