Tektronix TDS 340A, TDS 360, and TDS 380 oscilloscopes are digital signal processors and are superb tools for displaying and measuring waveforms. Their performance addresses the needs of both benchtop lab and portable applications with the following features: Two input channels, each with a record length of 1,000 samples and 8-bit vertical resolution. Both channels acquire waveforms simultaneously. 2 Gigasample/second maximum sample rate (TDS 380); 1 Gigasamples/ second maximum sample rate (TDS 360); 500 Megasamples/second maximum sample rate (TDS 340A). 400 MHz analog bandwidth and fastest time base setting of 1 ns/div (TDS 380); 200 MHz analog bandwidth and fastest time base setting of 2.5 ns/div (TDS 360); 100 MHz analog bandwidth and fastest time base setting of 5 ns/div (TDS 340A). A full complement of advanced functions including on-screen readout, AUTOSET, cursors, continuously updated automatic measurements, and FFT. Waveform averaging, waveform enveloping, and hardware peak detection. Floppy disk drive for mass storage of waveforms, setups, and hard copies. A unique graphical user interface (GUI) and a logical front-panel layout which combine to deliver the standard in usability pioneered by the TDS family of oscilloscopes.