System Analysis Capability
This screen provides a powerful tool for conducting an
uncertainty analysis for a
measurement system consisting of up to 10 modules arranged in series. The
output equation for each module can be defined as a function of up to 30
variables. System module
information can be saved in an
external file (*.mdl) for use in future analyses.
The uncertainty analysis for each module is handled in a similar manner to that
described for multivariate analysis. Module output equations are entered,
root variables are defined and estimates of the uncertainties in the root
variable errors are determined via drill-down
Error Source Worksheets.
Total measurement uncertainty for the output value of each module is computed and
displayed in a summary table. In analyzing linear measurement systems,
the uncertainty in the output of each module is included in the input to the
succeeding module in the system.
In this respect, the
uncertainty and associated degrees of freedom are computed somewhat differently than
most direct measurements and multivariate measurements.
Module files can be listed in a
Module Library. A Module Library stores module file information in a
central database that provides a link for accessing module files and
updating Module File information. Module files can be accessed
from this screen and also from the
Module Library Access screen. Module
file information is updated
via the Module Library Update screen.