Comtech EF Data SDM-2020 - Manual (Page 57)

SDM-2020 Satellite Modulator Revision 7
Front Panel Operation MN/SDM2020M.IOM
5-15
5.6.2.5 CONFIGURATION:INTERFACE:TX DATA FAULT
TX DATA FAULT
NONE
Upon entry, the current TX Data Fault that is being monitored is displayed.
1 Press a directional key to select one of the following modes:
NONE The TX interface alarm DATA/ASI is not activated.
Alarm Indication
Signal (ASI) Sets TX interface alarm DATA/ASI to monitor an
alarm condition of all 1s from customer data input to
the modulator.
DATA STABLE Sets TX interface fault DATA/ASI to monitor an
alarm condition of all 1s or 0s. This is referred to as a
data-stable condition, which means that the data is
not transitioning.
2 Press [ ↑] or [↓] to make the selection.
3 Press [ENTER] to execute the change.
Note: Detection of these conditions produces an alarm indication, not a fault.
5.6.2.6 CONFIGURATION:INTERFACE:TX CLK ACTIVITY
TX CLK ACTIVITY
ALARM
This parameter sets the response of the modulator when either a loss of clock activity or a
clock out-of-tolerance condition is detected. The response generates either an alarm or fault
based on the following selections:
• Alarm (TX-IF Remains ON)
•
Fault (Shuts TX-IF OFF)
Upon entry, the new response is indicated.
Press to execute the change. The alarm condition is indicated for the Alarm
selection.
Note: When Fault is selected, an indication is produced that causes the redundancy
switch-over.