Abstract: A printed circuit board test fixture that includes a mounting plate which supports a printed circuit board to be tested is provided. A probe support plate holder, positioned above the mounting plate, mechanically couples to a probe support plate and holds the probe support plate opposite the mounting plate. A base plate is positioned below the mounting plate. At least three alignment sliders are included, with each alignment slider including a guide rail and a runner block slidably coupled to the guide rail. The guide rails are coupled to the base plate. The runner blocks are coupled to the mounting plate to thereby allow for movement of the mounting plate only along an axis perpendicular to a plane of the mounting plate. Multiple balancing sliders coupled to the base plate and positioned at a back end of the printed circuit board test fixture.

Abstract: A test fixture for supporting a printed circuit board while it is undergoing electrical testing is provided. The printed circuit board test fixture includes a substantially planar mounting plate which supports a printed circuit board to be tested. A probe support plate holder, positioned above the mounting plate, mechanically couples to a probe support plate and holds the probe support plate opposite, and substantially parallel to, the mounting plate. A base plate is positioned below, and substantially parallel to, the mounting plate. At least three alignment sliders are included, with each alignment slider of the at least three alignment sliders including a guide rail and a runner block slidably coupled to the guide rail. The guide rail of each of the at least three alignment sliders is coupled to, and extends in an upward direction from, the base plate.

Abstract: An in-circuit test fixture loader includes a carrier that is able to receive and support an in-circuit test fixture. The carrier includes a pair of opposing side rails and an end rail between the side rails. The side rails and the end rail are spaced to receive the in-circuit test fixture between the side rails and against the end rail. The loader also includes a fixture lock connected to the carrier to prevent movement of the in-circuit test fixture away from the end rail. A horizontal slider attached between the carrier and a mechanism base includes guide shafts that guide the carrier and the in-circuit test fixture in a first substantially horizontal direction. A vertical slider of the loader is attached between the carrier and the mechanism base. The vertical slider includes an actuator that is operable to slide the carrier and the in-circuit test fixture in a second substantially vertical direction between an upper position and a lower position.