ezGrid Universal assign to grid tester software

• Support universal tester machine (4/6/8/12 grid density) and a variety of combo fixtures.
• Support None-Grid 2-wire and 4-wire probe fixture applications for HDI and IC substrate boards.
• Support customized Share Grid testing method
• Provide open fixture structure design.
• Assign pin to tester grid, consideration for 3D strength balancing of grid tester, in order to improve Grid tester stability.