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476 Legrand PDU User Guide
In the threshold settings, the Assertion Timeout field postpones the "assertion" action. It determines how long
a sensor must remain in the "worse" new state before the Legrand PDU triggers the "assertion" action. If that
sensor changes its state again within the specified wait time, the Legrand PDU does NOT assert the worse
state.
To disable the assertion timeout, set it to 0 (zero).
Note: For most sensors, the measurement unit in the "Assertion Timeout" field is sample. Sensors are
measured every second, so the timing of a sample is equal to a second. Raritan's BCM2 is an exception to
this, with a sample of 3 seconds.
How "Assertion Timeout" is helpful:
If you have created an event rule that instructs the Legrand PDU to send notifications for assertion events,
setting the "Assertion Timeout" is helpful for eliminating a number of notifications that you may receive in
case the sensor's readings fluctuate around a certain threshold.
Assertion Timeout Example for Temperature Sensors
Assumption:
Upper Warning threshold is enabled.
Upper Warning = 25 (degrees Celsius)
Assertion Timeout = 5 samples (that is, 5 seconds)
When a temperature sensor's reading exceeds 25 degrees Celsius, moving from the "normal" range to the
"above upper warning" range, the Legrand PDU does NOT immediately announce this warning state. Instead
it waits for 5 seconds, and then does either of the following:
If the temperature remains above 25 degrees Celsius in the "above upper warning" range for 5 seconds,
the Legrand PDU performs the "assertion" action to announce the "above upper warning" state.
If the temperature drops below 25 degrees Celsius within 5 seconds, the Legrand PDU does NOT
perform the "assertion" action.
