Model: TDS784A. The Tektronix TDS784A oscilloscope is a graph-displaying device - it draws a graph of an electrical signal. Make: Tektronix. Options: 13 (STD), 1M, 2F (STD). Pulse Width, 1 ns Glitch, Runt, Pattern and State, Setup & Hold Violation, and Slew Rate Triggering.