e. Analyze measured current data from the 10 ADVs.
GEDAP is being utilized in the LSTF, because it was designed with the
following features:
a. A standard data file format so that any GEDAP program can process data
generated by any other GEDAP program.
b. An extensive library of wave synthesis and data analysis programs to
minimize the amount of project-specific programming.
c. A consistent user interface so that all programs are easy to use in either
interactive or batch mode.
d. An extensive set of well-documented subroutine libraries so that future
application programs can be developed quickly and efficiently.
e. A fully integrated graphics capability named GPLOT, to allow
conveniently plotted at any stage of the data synthesis or analysis
process.
f.
A mechanism whereby data can be automatically identified whenever
they are listed or plotted, and labeled with correct engineering units.
g. Conversion utilities that allow data transfer between GEDAP files and
other standard formats, such as Microsoft Excel spreadsheets.
A block diagram of the basic GEDAP system is shown in Figure 36. This
diagram shows the logical flow of data between the three different packages in
the software, named NDAC, GPLOT, and ANALYSIS.
The NDAC package runs on Windows NT and performs real-time Data
Acquisitions and Control functions. However, this package is not used in the
LSTF, because the MTS control software is used for this purpose. Therefore, to
be more precise, the words "MTS Control Software" should be substituted for the
acronym "NDAC" in the upper left corner of this diagram. A program named
GEDAP_TO_MTS was developed to convert files from GEDAP to MTS file
format, such as wave machine drive signals, which are synthesized using
GEDAP. Another program named MTS_TO_DAC was developed to convert
files from MTS to GEDAP file format, such as measured wave and current data
files, which are analyzed using GEDAP.
57
Chapter 6
Experiment Control, Data Acquisition, and Analysis Packages
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