Tektronix TDS744A 4-channel digital memory oscilloscope. With 4 touch heads. The device offers a maximum of 2GS/s and InstaVu signal acquisition. This also detects rarely occurring signal anomalies that otherwise escape a DSO. Built-in are a variety of triggers, measurement and mathematical processing options, which also allow the acquisition and editing of difficult signals. The color screen ensures that you do not lose the overview even with several signal curves.