The Tektronix P7600 Series TriMode probes and the MSO/DPO70000DX and DPO/ DSA70000D Series Oscilloscopes are designed to deliver the industry's lowest system noise levels. This high sensitivity is critical for being able to make accurate measurements on low amplitude signals. The Tektronix P7633 is a Low Noise TriMode™ Probe, 33 GHz. Rise time (10-90%) 14 ps. Rise time (20-80%) 11 ps.