We recommend that the capacitance of the probe tip is minimized in order to reduce its adverse effects on rise time measurements. Figure 5 Basically, inductive loading distorts the signal being measured. Figure 5 illustrates the adverse effects of inductive loading on the circuit under test. The loading comes from the inductance of the probe ground lead. The inductance of a typical ground path is one nanohenry per millimeter.
L is the ground lead inductance.
We recommend that the ground lead used is as short as possible in order to minimize the ringing on top of the measured waveform.