The Digital Analysis System (DAS) 9200 is a highly modular set of state-of-the- art digital analysis tools. It includes the following items: A mainframe A color terminal Acquisition and pattern-generation modules Application software packages Probes By selecting and configuring these tools, you can customize your digital analysis system for your applications. The DAS can be used either as a stand-alone digital analysis system or as an intelligent peripheral device connected to a host computer or controller. Figure 1–1 shows two example configurations. On the left, a DAS stand-alone system (DASXP) is connected to a terminal; on the right, a DAS sends data to a controlling host computer (DASNT). As a stand-alone system, the DAS can be connected to a Tektronix color terminal, host computer, printer, or copier. The color terminal displays the interactive menus. The host computer can be used to transfer acquisition, stimulation, and instrument setup data to or from the DAS. Various types of parallel and serial printers are supported to generate non-color (monochrome) reproductions of display screens and acquisition and pattern-generation data. Using the optional 92XTerm software (also known as DASNT systems), you can operate the DAS from a window on a workstation. The interactive menus appear in the workstation window and are controlled with the mouse and keyboard. Communication between the DAS and the workstation is over a local area network (LAN). As a peripheral device remotely controlled by a host computer, the DAS supports a Programmatic Command Language (PCL) that is an alternative to the keyboard and menu interface. PCL commands let you start and stop acquisitions, manage files, and report status and error information. Data can be processed either by the DAS or the host computer; when the host computer processes data, the DAS is the source of raw or partially processed data.