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Description: Returns the cumulative or instantaneous MTBF for a given time.
Field Format: [MTBF(Source Number)(Time;Cumulative;Conf_Level)]
Source Number is the associated data source number.
Time is the time at which the value is calculated.
Conf_Level is the percentage (entered as a decimal value) for the confidence bounds. It is an optional value and, if specified, must be greater than 0 and less than 1.
Remarks:
The Source Number must be either 1,2,3 or 4.
The Time value must be greater than 0.
Example:
[MTBF(1)(1000;1;0.8)]
Returns:
140.12
Note that this value will vary depending on the source data set.
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