Abstract: Ground reference lead for measuring high frequency electrical signals using a probe head. The ground reference lead comprises a flexible body, a probe socket arranged on a probe end of the flexible body, a ground socket arranged on a ground end of the flexible body, an electrical contact pathway that electrically connects the probe socket and the ground socket and that extends at least partially within the flexible body, and a resistor that is electrically arranged in the electrical contact pathway.

Abstract: A probe head with a cylindrical portion and an oblique truncated portion angled downward toward a high-powered electronic device under testing. The probe head has a proximal end comprising an oblique truncated cone portion angled relative to the longitudinal axis at an input angle and has an analog signal input. The probe head has a digital signal output provided on the distal end of the housing.