Operating instructions

DMD50 Universal Satellite Modem User Interfaces
TM118 – Rev. 1.1 4-25
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 solid indication points toward a configuration
problem within the modem.
IF SYNTH PLL {Pass/Fail, Unmasked/Masked}
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.
ETHERNET WAN Indicates that the interface card is faulted and will not
pass data (displays only when the Ethernet Card is
installed and the Ethernet Interface is selected).
FORCED ALARM {DISABLED, ENABLED}
Allows user to enable a forced Rx summary alarm.
RX MINOR (menu)
BUFF UNDERFLOW {Pass/Fail, Unmasked/Masked}
Indicates that a Doppler Buffer underflow has occurred.
BUFF NEAR EMPTY {Pass/Fail, Unmasked/Masked}
Indicates that the Doppler Buffer is about to underflow.
BUFF NEAR FULL {Pass/Fail, Unmasked/Masked}
Indicates that the Doppler Buffer is about to overflow.
BUFF OVERFLOW {Pass/Fail, Unmasked/Masked}
Indicates that a Doppler Buffer overflow has occurred.
RX DATA ACTIVITY {Pass/Fail, Unmasked/Masked}
Indicates that there is no Rx Data activity.
SAT AIS {Pass/Fail, Unmasked/Masked}
Indicates that AIS has been detected in the receive
satellite data stream.
DnI FRAME LOCK {Pass/Fail, Unmasked/Masked}
Indicates if drop/insert data is frame locked.
DnI M-FRAME LOCK {Pass/Fail, Unmasked/Masked}
Indicates if drop/insert data has multiframe lock.
INSERT CRC {Pass/Fail, Unmasked/Masked}
Indicates if the Circular Redundancy Check is passing in
PCM-30C and PCM-31C Modes.
T1/E1 SIGNALING {Pass/Fail, Unmasked/Masked}
The interface is not deleting the expected signaling
information.
IFEC LOCK {Pass/Fail, Unmasked/Masked}
Indicates that the Framing Unit is unable to find the
expected framing pattern.