HEIDENHAIN ND 2100G - Manual (Page 94)

94 2 Installation and Specifications
2
.3
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ft
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p r Ucl and Lcl
The r Ucl and r Lcl are the likely limits of the values of the r of future
subgroups calculated on the basis of existing subgroup data. These
limits are either entered manually or calculated, using the RECALC
soft key, on the basis of existing subgroup data. The r Ucl and r Lcl
values are displayed as horizontal lines on the chart and used to
generate SPC limit alarms.
To manually specify r Ucl and r Lcl:
U Highlight the r Ucl or r Lcl field
U Use the numeric keypad to enter the desired r Ucl or r Lcl
U Press the ENTER key
Recalculating r Ucl and r Lcl
Once subgroup data has been collected, the upper and lower control
limits can be simultaneously recalculated.
To recalculate r Ucl and r Lcl:
U Highlight the r Ucl field
U Press the RECALC soft key
U Press the ENTER key