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Comtech EF Data DMD1050 User Manual

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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