Comtech EF Data DMD1050 User Manual
Page 133

DMD1050 Satellite Modem Board
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MN-DMD1050
7–39
Revision 9
Alarms / Receive Menu
Figure 7-23. Alarms / Receive Menu
MAJOR ALARMS
FPGA Config:
{Pass/Fail, Unmasked/Masked}
Indicates a receive FPGA hardware failure.
DSP Config:
{Pass/Fail, Unmasked/Masked}
Indicates a receive DSP failure.
Signal Lock:
{Pass/Fail, Unmasked/Masked}
Indicates that the demod is unable to lock to a signal.
Input Level;
{Pass/Fail, Unmasked/Masked}
Indicates Rx signal level has fallen below input threshold.
Frame Lock:
{Pass/Fail, Unmasked/Masked}
Indicates that the Framing Unit is unable to find the expected
framing pattern.
MFramelock:
{Pass/Fail, Unmasked/Masked}
This alarm will flash on during certain modem parameter
changes. A solid indication points toward a problem with the
incoming clock to the modem (SCTE).
LB Synth PLL:
{Pass/Fail, Unmasked/Masked}
Indicates that the Rx L-Band Synthesizer is not locked. This
alarm will flash on during certain modem parameter changes. A