Appendix K: Additional PX Information
654
This function is similar to a thermostat, which instructs the air conditioner
to turn on the cooling system when the temperature exceeds a
pre-determined level. "Deassertion Hysteresis" instructs the PX to
de-assert the worse state for a sensor only when that sensor's reading
hits the pre-determined "deassertion" level.
For upper thresholds, this "deassertion" level is a decrease against each
threshold. For lower thresholds, this level is an increase to each
threshold. The value of the decrease or increase is exactly the hysteresis
value.
For example:
If Deassertion Hysteresis = 2,
Upper Critical = 33, so its "deassertion" level = 33 - 2 = 31.
Upper Warning = 25, so its "deassertion" level = 25 - 2 = 23.
Lower Critical = 10, so its "deassertion" level = 10 + 2 = 12.
Lower Warning = 18, so its "deassertion" level = 18 + 2 = 20.
To use each threshold as the "deassertion" level instead of determining a
new level, set the Deassertion Hysteresis to 0 (zero).
How "Deassertion Hysteresis" is helpful:
If you have created an event rule that instructs the PX to send
notifications for deassertion events, setting the "Deassertion Hysteresis"
is helpful for eliminating a number of notifications that you may receive in
case a sensor's reading fluctuates around a certain threshold.
Deassertion Hysteresis Example for Temperature Sensors
Summary of Contents for PX3-4000 series
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Page 627: ...Appendix I RADIUS Configuration Illustration 606 Note If your PX uses PAP then select PAP...
Page 632: ...Appendix I RADIUS Configuration Illustration 611 14 The new attribute is added Click OK...
Page 633: ...Appendix I RADIUS Configuration Illustration 612 15 Click Next to continue...
Page 648: ...Appendix J Integration 627 3 Click OK...
Page 661: ...Appendix J Integration 640 2 Launch dcTrack to import the spreadsheet file...