The Tektronix CSA 803A is a high-resolution Communications Signal Analyzer accommodating up to four input channels through the dual-channel sampling heads. With the SD-24TDR/Sampling Head, four channels of single-ended TDR or two channels of differential TDR are available as well. Features include: ■ sweep rates ranging from 5 ms/division to 1 ps/div ■ autoset to provide a suitably adjusted display for viewing and further manual adjustment ■ windows for viewing expanded sections of a trace ■ self-tests to assure continuous accuracy of waveform data and measurements ■ digital waveform storage and display ■ on-board measurement capabilities ■ menu-driven touch-screen operation ■ RS-232-C, GPIB, and PRINTER interfaces This section has two main sub sections: ■ System Functional Overview describes the major functional blocks of the CSA 803A and presents a typical waveform processing cycle ■ Block Diagram Descriptions discusses the individual boards in the CSA 803A