GOLDENEAGLE TV 6.0.x user manual
– 07/2012
Page 20
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Triggering alarms:
As monitoring starts, each test is set to
‘NO_ERROR’ status.
This status is then reevaluated with each monitoring cycle as the tests are performed again. When a
measured value is out-of-tolerance, the state switches to
‘ERROR’, but the alarm is not triggered
immediately. For each parameter
, the “timeout before alarm” parameter can be configured: it represents a
delay during which an error state is tolerated before the alarm is triggered. Once this length of time has been
reached, the state switches to ‘ALARM’, and corresponding actions are then taken (notification, placement of
the
event in the event log…)
Switching from ‘ERROR’ to ‘NO_ERROR’ is immediate; however, it takes 2 confirmations to go from
‘ALARM’ to ‘NO_ERROR’, the test must be error free for 2 consecutive cycles.
The hysteresis is an additional factor to be taken into account before the unit returns to normal state after a
‘level’ type threshold violation. This value adjusts the triggering threshold after an alarm begins so that
fluctuations near the threshold level will not continuously trigger alarms. For instance, if we set the high level
threshold at 60 and the hysteresis at 5, the alarm activates at a level higher than 60, and stays on until the
level falls below 55.
Error duration <
guard time
Detected error
2 consecutive cycles
with no error
Error duration >
guard time
