Comtech EF Data SNM-1010L - Manual (Page 80)

SNM-1010L Data/Control Modem Revision 0
Front Panel Operation MN/SNM1010L.OM
3.4.3.4 FUNCTION SELECT:FAULTS AND ALARMS:RX INTERFACE
RX INTERFACE
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BUFFER UNDERFLOW Buffer underflow alarm. Indicates that a buffer
underflow has occurred.
BUFFER OVERFLOW Buffer overflow alarm. Indicates that a buffer
overflow has occurred.
RX DATA/AIS Data or AIS. When data fault is selected in the
Configuration Interface menu, the fault indicates a
data stable condition. This indicates the data
coming from the satellite is all 1s or 0s (i.e., data is
not transitioning). When AIS is selected, the Alarm
indicates the data is all 1s from the satellite. When
NONE is selected in the Configuration Interface
menu, the RX Data/AIS Fault/Alarm is not activated.
Note: AIS is an alarm, not a switching fault.
FRAME BER Frame BER fault. Indicates that the frame BER
exceeds 1-3.
BACKWARD ALARM Not Applicable.
BUFFER CLK PLL Buffer clock phase-locked loop fault. Indicates the
buffer clock PLL is not locked.
BUFFER CLK ACT Activity detector alarm of the selected interface
receive clock. The interface will fall back to the
satellite clock when this fault is active.
DEMUX LOCK DEMUX lock fault. Indicates that the DEMUX is not
locked.
RX 2047 LOCK RX 2047 lock alarm. Indicates the RX 2047 data
pattern is not locked.
Note: This alarm is only active if RX 2047 is ON.
BUFFER FULL Buffer full alarm. Indicates the buffer is less than
10% or greater than 90% full.
RX INSERT Not Applicable.
RX AUDIO 1 CLIP Not Applicable.
RX AUDIO 2 CLIP Not Applicable.
CONFIGURATION Configuration alarm.
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