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4.6.2.4
Output N SESR Level
This event allows an alarm or warning to be raised if the Severely Errored Second Rate (SESR)
associated with the N
the time window over which the SESR is computed is the same as that used to compute ESR, and
is programmable by the user (See Para 4.9.5.4). A 'Severely Errored Second' is defined as an
interval of one second in which at least 30% of the received blocks contain un-correctable errors.
4.6.2.5
Output N BBER Level
This event allows an alarm or warning to be raised if the Background Block Error Rate (BBER)
associated with the N
the time window over which the BBER is computed is the same as that used to compute ESR and
SESR, and is programmable by the user (See Para 4.9.5.4). The BBER is defined as the percentage
of the received blocks containing un-correctable errors. Blocks received during all 'Severely
Errored Seconds' are excluded from this calculation.
Setting Alarms
4.6.3
To set an alarm:
1.
Check the 'Alarm Monitoring' box next to the property on which you wish to generate an
alarm.
2.
Change the default alarm threshold, if required. The units of the threshold are displayed to
the right of the text entry box.
Note
Some alarms have no user threshold.
3.
Repeat steps 2 and 3 to add all required alarms
4.
Select the 'Update Monitor' tab.
Setting Warnings
4.6.4
To set a Warning:
1.
Check the 'Warning Monitoring' box next to the property on which you wish to generate a
warning.
2.
Change the default warning threshold, if required. The units of the threshold are displayed to
the right of the text entry box.
Note
Some warnings have no user threshold.
3.
Repeat steps 2 and 3 to add all required warnings.
4.
Select the 'Update Monitor' tab.
Alarm Status
4.6.5
A summary of the alarm and warning status is visible at all times in the monitor bar at the left side
of the main panel. If no warnings or alarms are active, the summary for the relevant functional
unit should appear as a green tick as shown below.
SBD75e Series Demodulator Installation and Operation Manual
output interface has exceeded the user specified threshold. The length of
th
output interface has exceeded the user specified threshold. The length of
th
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