Abstract: A low profile receptacle terminal of unitary construction includes an integral head portion with a perimeter wall of low profile; the perimeter wall has a plurality of integral spring contact fingers thereon each connected at one end to the perimeter wall and each having a free end thereon located within the perimeter wall and bent at an acute angle with respect to the upper edge of the perimeter wall so as to reduce the height of the head portion; the spring contact fingers have a free state position; the head portion is spaced from a gage can by a clearance that prevents electrical shorting between an electrical component and the receptacle terminal.

Abstract: Electrical signals are measured (analyzed and displayed) with subpicosecond resolution by electro-optic sampling of the signal in an electro-optic crystal, the index of which changes in response to the electric field produced by the signal, in accordance with the Pockels effect. The crystal is disposed adjacent to a transmission line along which the signals propagate the line may be a coplanar wave guide having a plurality of parallel strips of conductive material on the surface of the crystal. The crystal may be disposed adjacent to and in the fringe field of a line on a substrate, which may be part of an integrated circuit, for measuring signals propagating along the line during the operation of the circuit. A beam of short optical (laser) sampling pulses in the picosecond range is focused so that the region where the beam is confocal is disposed where the field is parallel in the crystal.