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Problem Description

During the course of debugging the hardware interface between the computer itself and the outside world, it is sometimes necessary to test this actuation hardware by testing them with applied known voltages. Furthermore, it is also sometimes necessary to actively monitor voltage reading from the real world sensing mechanisms, again for the purpose of debugging said hardware.

Our example program attempts to facilitate this real time monitoring of sensor voltages and real time application of test voltages. It does so by presenting a window to the user with five independent ``spin buttons'' (Figure 6.2), each of which controls each of the D/A channels, and allowing the user to record both the A/D inputs and the signals latched on to the D/A outputs.

Figure 6.1: Example user_GUI.par for the I/O Tester
\begin{figure}\centering\begin{tt}
\begin{verbatim}start_col n  ...

Figure 6.2: Controller window for example I/O Tester application.
\includegraphics[width=0.4\textwidth]{Figures/IO_tester.eps}



Michael Barabanov 2001-06-19