User`s manual

Statistical Process Control Option
The Statistical Process Control (SPC) option provides
simultaneous displays of a variety of SPC data using
histognuns, control charts, and tables of cumulative
statistics. You can select from among several data display
options, such as X Bar and Histogram, X Bar and R and
Histogram, and so on.
In addition, the SPC option can log results data and
statistics to disk files for later use in reports or, when
converted, in other application programs.
You can select one of the following SPC setup and
operation methods, according to your experience and
application requirements. Each has a different level of
complexity, as follows:
1. Automatic SPC setup: This is the easiest and
quickest method of SPC setup and operation. It
automatically calculates the upper and lower chart
boundaries during an initialization phase, then displays
SPC data. Use this method if you have little knowledge
of SPC.
2. Run-only short SPC setup: This setup method
enables you to perform SPC operations by using
existing SPC setup records. Use this method to inhibit
unauthorized personnel from changing SPC setup
records.
3. Short SPC setup: This setup method enables you to
prepare an SPC setup record in which you can specify
a few SPC parameters, then perform SPC operations
using that record. Use this method if you have a
working knowledge of SPC and want to modify some
basic chart parameters.
4. Long SPC setup: This setup method enables you to
prepare a detailed SPC setup record in which you can
specify all of the SPC parameters that are available
with this SPC option and perform SPC operations
using that record Use this method only if you have a
thorough knowledge of SPC concepts and parameters.
These SPC setup methods are described in detail in this
chapter.