CSA 803C Service Manual
3Ć1
Theory of Operation
The Tektronix CSA 803C is a highĆresolution Communications Signal AnalyzĆ
er accommodating up to four input channels through the dualĆchannel
sampling heads. With the SDĆ24 TDR/Sampling Head, four channels of
singleĆended TDR or two channels of differential TDR are available as well.
Features include:
H sweep rates ranging from 5 ms/division to 1 ps/div
H autoset to provide a suitably adjusted display for viewing and further
manual adjustment
H windows for viewing expanded sections of a trace
H selfĆtests to assure continuous accuracy of waveform data and measureĆ
ments
H digital waveform storage and display
H onĆboard measurement capabilities
H menuĆdriven touchĆscreen operation
H RSĆ232ĆC, GPIB, and PRINTER interfaces
This section has two main sub sections:
H System Functional Overview describes the major functional blocks of
the CSA 803C and presents a typical waveform processing cycle
H Block Diagram Descriptions discusses the individual boards in the
CSA 803C