The connection between the ICT and the unit under test (UUT) is made through a test fixture commonly referred to as a ‘Bed of Nails’. The nails (see Figure 1) are spring-loaded probes that make contact with the test point (unmasked vias, THT components, test pads, and gold fingers). The reliability of the contact is directly related to the fixture type, size of the UUT, size of the contact targets, target registration, and the placement of...