X-windows-based user interface for data acquisition and display

Abstract
A Macintosh‐like user interface for the MDS‐Plus data acquisition system is being implemented using the DECwindows MIT/X interface. MDS‐Plus is a model driven general purpose data acquisition system being developed collaboratively by the CMOD group at MIT Plasma Fusion Center, the RFX group at IGI‐Padua, and the ZTH group at Los Alamos National Laboratory. The model is a hierarchical description of an experiment, including all of the tasks to be performed and the results of having performed them. The inherent complexity of this experimental model requires the users to specify fairly complicated descriptions of what they want the system to do. A ‘‘Point and Click’’ interface simplifies this by presenting to the user a coherent set of choices which are valid in the current context. We are implementing a set of tools for data acquisition and data analysis which use DECwindows to this end. They include a data displayer (Scope Replacement), an experiment model editor (Tree Editor), a timing system, and a waveform editor. These tools provide an easy to use interface to the MDS‐Plus data acquisition system.

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