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Description: Returns the value of the failure rate at the specified time and stress level.
Syntax: FAILURERATE_S(Data_Src, Time, [Confidence Level], [SL_1])
Data_Src is the source data sheet from which the value is taken.
Time is the time at which the failure rate is calculated.
Confidence Level is the percentage (entered as a decimal value) for the 1-sided confidence bounds.
SL_1 is the stress level, for each stress type, at which the failure rate is calculated. The number of stress level inputs is determined by the number of stress types in the specified data sheet.
Remarks:
The Data_Src can be one of the following values:
If using a default data source, it must be either 1, 2, 3 or 4, as selected from the Data Source Index drop-down list.
It can take a data sheet name (e.g., "Folio1!Data 1").
It can take a variable name defined in the Defined Names window (e.g., datasource).
The Time value must be greater than 0.
Confidence Level is an optional value and, if specified, must be greater than 0 and less than 1.
SL_1 is an optional value. The default value is the use stress specified in the Use Stress Level window, but you can change the value to any desired number. If the data sheet uses the Cumulative Damage model, you can also use a stress profile for this value.
Example:
FAILURERATE_S("Folio1!Data 1",20000,0.9,356) = 0.0102
Note that this value will vary depending on the source data set.
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