3 tx interface faults – Comtech EF Data SDM-9000 User Manual
Page 101
SDM-9000 Satellite Modem
Operation
Rev. 4
4–27
4.2.3.3 TX Interface Faults
TX 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 is all 1s or all 0s (i.e., the data is not transitioning).
When AIS is selected, the alarm indicates the data is all 1s from
customer data input to the modem. When None is selected in the
Configuration Interface menu, the TX Data/AIS Fault/Alarm is not
activated.
Note: AIS is an alarm, not a switching fault.
TX CLOCK PLL
TX phase-locked loop fault. Indicates the TX PLL is not locked.
TX CLOCK ACTIVITY
Activity detector alarm interface TX clock. The interface will fall back
to the internal clock when this alarm is active.
PROGRAMMING
TX Interface programming fault.
CONFIGURATION
TX Interface configuration fault. Indicates the TX interface cannot
execute a programmed configuration parameter.
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