HEIDENHAIN ND 2100G - Manual (Page 91)

ND 2100G GAGE-CHEK 91
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p SPC setup screen
The SPC setup screen contains fields for specifying statistical process
control parameters including the Subgroup (sample) Size and Max
(number of) subgroups stored, upper and lower mean control limits,
and upper and lower range control limits. Record ID numbers can also
be viewed or changed.
Subgroup size
To specify a subgroup size:
U Highlight the Subgroup Size field
U Enter the desired subgroup size from 1 to 10 samples
U Press the ENTER key
SPC parameters in the lower half of the screen and graphs of data
displayed on the screen are different for subgroup sizes of 1 and
subgroup sizes greater than 1.
The differences between subgroups of 1 and subgroups greater than
1 are described later in this SPC screen discussion.
Max subgroups
Max subgroups specifies the maximum number of subgroups to be
stored for the specified dimension. Each dimension can store samples
in from 2 to 1000 subgroups.
To specify the maximum number of subgroups:
U Highlight the Max Subgroups field
U Enter the maximum number of subgroups to be stored for the
specified dimension. Each dimension can store samples in from 2 to
1000 subgroups.
U Press the ENTER key
SPC setup screen. Subgroup Size = 1
SPC setup screen. Subgroup Size > 1