Specify a threshold above or below the severity level that sets an alarm to reduce alarm
instances from a noisy signal.
Before you begin, configure a trend
Configuring hysteresis is useful for
preventing an alarm from clearing immediately after it is set. To learn more about
hysteresis, refer to Conditions of Setting and Clearing Alarms
. Specify an offset
value from the Compare To value that clears an alarm.
Click the Navigation menu
go to .
Find and select the trend rule for which you want to configure
Click Edit to bring up the
Trend Alarm Rule dialog.
Below the sample of data in the dialog, configure the hysteresis value in the
Hysteresis text field.
The alarm rule that you have modified now clears an alarm
when trend values cross the threshold for the hysteresis you specified.
If you want to refine
the conditions for setting an alarm further, consider configuring an on and