Patent ID: 7717715

Claim:
Apparatus for routing signals between at least one printed circuit board (PCB) within a test head and a socket card assembly for electrically connecting the at least one PCB with a plurality of devices under test, the apparatus comprising: at least one flexible circuit for electrically connecting first and second sides of the PCB and the socket card assembly with one another, the at least one flexible circuit being electrically connected to the first and second sides of the PCB along first and second planes, and the at least one flexible circuit having a defined shape configured to provide an electrical interface for the socket card assembly, the electrical interface for the socket card assembly being intermediate locations where the at least one flexible circuit is electrically connected to the first and second sides of the PCB, and the electrical interface for the socket card assembly being provided in a third plane that is substantially perpendicular to the first and second planes; wherein each of the at least one flexible circuit has a semi-rigid structure and a strain-relief radius, wherein the strain-relief radius provides a degree of compliance to the flexible circuit and the electrical interface.