Cayman (987) F6-2.9L (2009)
Signal Evaluation/Validation (only Delay Measurement)
For a robust monitoring function (Delay Measurement) the HO2S signal needs to meet the following conditions to ensure a certain level of signal quality:
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The measured time delay between target and actual signal is not greater than an applicable time threshold (typical value: Approx. 1-2.5s)
Figure 3:
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The time difference between expected and actual signal is greater than an applicable time threshold (typical value: Approx. 0.25-1s)
Figure 4:
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The variance (statistics: relative variance) of every measurement necessary for fault detection is less than a calibrated threshold (typical value:
Approx. 0.02-0.1)
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Time period (figure 5: t1..t4) between recognized maximum or minimum values and their confirmations is within a calibrated range (typical range:
Approx. 0.02-2s)