Limit for duration feedback

The limit for duration feedback is a number, 100 through 999, that establishes the limits within which measured values are regarded as normal and acceptable. A measured value outside the limits is ignored; that is, no smoothing factor is applied and the application description database is not updated.

The limits are calculated as follows:

Lower limit = OD * 100/LF
Upper limit = OD * LF/100

Where:

OD: The old estimated duration stored in the application description database.
LF: The limit for duration feedback.

Examples of limits for feedback shows some examples of how the limit for feedback algorithm works.

Table 1. Examples of limits for feedback
LF value	Result
100	No new estimated duration will be stored in the application description database, unless you have set FIRSTFDBK(YES) in the JTOPTS statement.
110	The new estimated duration will be stored if the measured duration is approximately between 90% and 110% of the old estimated duration.
200	The new estimated duration will be stored if the measured duration is between half and double the old estimated duration.
500	The new estimated duration will be stored if the measured duration is between one-fifth and five times the old estimated duration.
999	The new estimated duration will be stored if the measured duration is between one-tenth and 10 times the old estimated duration.