Abstract: A contact head (6) for an electrical test device (1) for electrically testing substrates, which have electrical contact points, with at least two guide plates (13, 14) that are arranged to each other by a spacer (15) and each have guide openings (16) essentially aligned with each other for receiving pin-shaped contact elements (8) and are oriented to each other by a centering device (20), wherein the centering device (20) has four centering pins (19), which are displaceably mounted in a slot (23), extending toward a center (Z) of the contact head (6), at least of one of the guide plates (13, 14), and wherein the centering pins (19) are each held in a centering opening (18) of the spacer (15). It is provided that the centering openings (18) each have only one guide surface (21) oriented at least essentially parallel to a radial axis (R)—in relation to the center (Z).

Abstract: A contact head (6) for an electrical test device (1) for electrically testing substrates, which have electrical contact points, with at least two guide plates (13, 14) that are arranged to each other by a spacer (15) and each have guide openings (16) essentially aligned with each other for receiving pin-shaped contact elements (8) and are oriented to each other by a centering device (20), wherein the centering device (20) has four centering pins (19), which are displaceably mounted in a slot (23), extending toward a center (Z) of the contact head (6), at least of one of the guide plates (13, 14), and wherein the centering pins (19) are each held in a centering opening (18) of the spacer (15). It is provided that the centering openings (18) each have only one guide surface (21) oriented at least essentially parallel to a radial axis (R)—in relation to the center (Z).

Abstract: An electrical testing apparatus for testing an electrical test sample. The apparatus includes a conductor substrate which is electrically connected via a contact spacing converter to a test head. The conductor substrate is mechanically connected to a first stiffening device and is thereby stiffened. At least one spacer which penetrates the conductor substrate is mechanically connected to the contact spacing converter and is held on the first stiffening device via at least one tilt adjusting arrangement.

Abstract: An electrical testing apparatus for testing an electrical test sample. The apparatus includes a conductor substrate (12) which is electrically connected via a contact spacing converter (7) to a test head (2). The conductor substrate is mechanically connected to a first stiffening device (26) and is thereby stiffened. At least one spacer (30) which penetrates the conductor substrate (12) is mechanically connected to the contact spacing converter (7) and is held on the first stiffening device (26) via at least one tilt adjusting arrangement (34).

Abstract: An electrical testing apparatus for testing an electrical test sample. The apparatus includes a conductor substrate which is electrically connected via a contact spacing converter to a test head. The conductor substrate is mechanically connected to a first stiffening device and is thereby stiffened. At least one spacer which penetrates the conductor substrate is mechanically connected to the contact spacing converter and is held on the first stiffening device via at least one tilt adjusting arrangement.

Abstract: An electrical testing apparatus for testing an electrical test sample. The apparatus includes a conductor substrate (12) which is electrically connected via a contact spacing converter (7) to a test head (2). The conductor substrate is mechanically connected to a first stiffening device (26) and is thereby stiffened. At least one spacer (30) which penetrates the conductor substrate (12) is mechanically connected to the contact spacing converter (7) and is held on the first stiffening device (26) via at least one tilt adjusting arrangement (34).