Patent ID: 7977957

Claim:
A method for electrical testing of a unit under test, wherein the unit is connected via a contact-making apparatus to an electrical test device, and the contact-making apparatus having a plurality of electrical contacts on at least one holding element for making contact with mating contacts on the unit under test, and with the contacts and the mating contacts being positioned with respect to one another with the assistance of optical detection processes of the contact-making apparatus and unit under test, the method comprising: clamping the holding element in a position, producing and placing at least one marking, which is a defined position with respect to at least one of the contacts, on the contact-making apparatus, producing apertures in the holding element and associating the plurality of electrical contacts with the apertures in at least one holding element, the marking and apertures being produced using at least one of a same machining apparatus and a same type of machining process with the apertures and marking being formed at the same time with the holding element remaining in the clamped-in position, and detecting the marking optically for position determination and positioning the contacts and the mating contacts with respect to one another with assistance of the optical detection of the contact-making apparatus and the unit under test.