Test Module Assembly
Original Publication Date: 1986-May-01
Included in the Prior Art Database: 2005-Mar-09
A technique is described whereby a test module assembly is capable of testing up to 12,000 contacts on the top surface of a substrate and up to 1,800 contacts on the bottom surface of the substrate. The test module assembly consists of five sub-assemblies: drive base assembly 10, as shown in Fig. 1, positioning carriage assembly 11, load and unload carriage assembly 12, probe base assembly 13 and probe yoke assembly 14. The function of each of the five sub-assemblies is as follows: 1. Drive base assembly 10 consists of mounting plate 15, as shown in Fig. 2, to support the main Z-drive motor 16 and its reduction gearing 16A, providing translation to two lead screws 17 which are phased to positioning carriage 18 to inhibit rotation.