Specifications

Web GUI Monitoring & Control
4.6.1.7 Dummy Frames Only
Allows an alarm or warning to be raised if only dummy PL frames have been received in the
preceding user specified interval.
4.6.2 Output Alarms
There are a number of alarms which pertain to the functions of specific output interfaces. These
alarms may be viewed by selecting the appropriate output tab. A window, similar to that shown
in Figure 4.10 is displayed.
Figure 4.10: Output Alarms Window
4.6.2.1 Output Fault
This event allows an alarm or warning to be raised if the N
th
output interface is not operating
correctly.
4.6.2.2 Output N ISI is Not Present
This event allows an alarm or warning to be raised if the Input Stream Identifier (ISI) associated
with the N
th
output interface has not been observed in the preceding user specified interval.
4.6.2.3 Output N ESR Level
This event allows an alarm or warning to be raised if the Errored Second Rate (ESR) associated
with the N
th
output interface has exceeded the user specified threshold. The length of the time
window over which the ESR is computed is also programmable by the user (See Para 4.9.5.4). An
‘Errored Second’ is defined as an interval of one second in which one or more of the received
blocks contain un-correctable errors.
4-12 SBD75e Series Demodulator Installation and Operation Manual