aps Signal Degrade Ratio

This attribute specifies the minimum bit error ratio (BER) for which a Signal Degrade failure is declared. Its value is the exponent of the BER, with possible values of -5 through -9 inclusive, which correspond to a BER range of 10-5 through 10-9. The switch initiation time for a Signal Degrade varies depending on the observed BER (not the provisioned signalDegradeRatio), as described in the following table. Observed BER Switch Initiation Time 10-3 10 milliseconds 10-4 100 milliseconds 10-5 1 second 10-6 10 seconds 10-7 100 seconds 10-8 16 minutes 40 seconds 10-9 2 hours 46 minutes 40 seconds The clearing threshold for a Signal Degrade is one-tenth the signalDegradeRatio; for example, if the provisioned signalDegradeRatio is -5, the corresponding clearing threshold will be 10-6. The clearing time varies depending on the clearing threshold (not the observed BER), and can be determined from the above table.