The Tektronix 11801C is a high-resolution digital sampling oscilloscope accommodating up to eight input channels through the dual-channel sampling heads. With the SD-24 TDR/Sampling Head, eight channels of singleended TDR or four channels of differential TDR are available as well. Features include the following: ■ 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: