Tga software, General, Startup – Campbell Scientific TGA100 Trace Gas Analyzer Manual User Manual
Page 27: Main menu, 3 tga software 27, General 27, Startup 27, Main menu 27, On 3.2)
3 TGA SOFTWARE
3.1 General
The TGA software runs on the TGA PC. It provides the user interface to the TGA100, allowing the user to view the
operation of the TGA, set parameters, and collect data. The TGA program actually is a set of three programs that run
concurrently on three computers, communicating in real time. The first computer is the TGA PC itself. It runs the user
interface and data storage functions of the TGA software. The second computer is the 9030 CPU module mounted in
the TGA electronics chassis in the TGA enclosure. This computer controls the detector temperatures, the laser
temperature and current, performs the measurements, and sends the data to the third computer, which is the transputer
board mounted in the TGA PC. This third computer acts as an interface between the other two, and performs most of
the calculations required to compute the concentration. When two or more TGA100s are linked together in the
master/slave configuration, the transputer board also provides the communication link between them.
Normally it is not important for the user to be aware of the three computers and the roles they play. It is sufficient to
know that the TGA program runs on the TGA PC, the transputer board must be installed in the PC, and the transputer
board must be connected to the TGA enclosure through the link adapter and the fiber optic cable. However this
information may be useful in troubleshooting problems.
The following sections discuss the details of the TGA software.
3.2 Startup
The TGA program is a DOS mode program. Although it may be run under the Windows operating system, it will run
more reliably when the TGA PC is started in DOS mode.
The executable file is TGA.EXE, normally installed in the C:\TGA directory. The program is started by setting the
default path to C:\TGA and entering the command <TGA>. The TGA program starts at the main menu.
3.3 Main Menu
When the TGA program is started, the main menu is displayed as shown below:
Figure 3-1. Main Menu
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