P6249 4 GHz 5X Active Probe Instruction Manual 23
Helpful Hints
Follow these helpful hints to make probing easier and noise free.

Low-Inductance Grounding

Placing a ground plane on top of a package being probed can
minimize ground lead length and inductance. See Figure 5.
Figure 5: Low-inductance grounding
Attach a small piece of copper clad on top of the package and
connect it to the package ground connection. Use the low-inductance
ground lead provided with the P6249 to keep the ground lead length
as short as possible.