The Tektronix TLS 216 Logic Scope is a superb tool for analyzing and debugging digital circuits. Its performance addresses the needs of digital designers and troubleshooters of such circuits with the following features: sixteen channels, equipped with sixteen 2.5 pF FET probes, for acquiring waveforms from digital circuits three display modes — displays analog waveforms, digital BusForms, and dual-threshold timing diagrams four threshold level presets based on four logic families, TTL, CMOS, +ECL, and –ECL, for deriving digital levels for BusFormTM and timing diagram displays five trigger types — Edge, Pulse, Pattern, State, and Sequence 500 MHz maximum bandwidth, a 2 Gigasamples/second maximum digitizing rate, eight-bit digitizers, and up to a 2,000-sample record length per channel full GPIB software programmability and hardcopy output using GPIB, RS-232, or Centronics ports complete measurement and documentation capability intuitive operation using graphic icons and the more familiar and traditional horizontal and vertical knobs on-line help at the touch of a button