Patent ID: 9244118
Filing Date: 2016-01-26
CPC Classification: G01R,H01L,H04B

Claim Text:
1. A system for testing a DUT having a first ground and a plurality of I/O pins, comprising: a switching module having a second ground, comprising a conductive path configured to conduct a first pin out of the plurality of I/O pins of the DUT to a second pin of the switching module; a tester having a third ground, connected to the conductive path; a first rectifying device having a first positive terminal and a first negative terminal; a second rectifying device having a second positive terminal and a second negative terminal, wherein the second positive terminal is electrically coupled to the first ground of the DUT; and the second negative terminal is electrically coupled to the first pin of the DUT; and a third rectifying device having a third positive terminal and a third negative terminal, wherein the third positive terminal is electrically coupled to the second ground of the switching module; and the third negative terminal is electrically coupled to the second pin of the switching module, wherein the first ground of the DUT and the third ground of the tester are electrically coupled to each other; the first positive terminal of the first rectifying device is electrically coupled to the second ground of the switching module; and the first negative terminal of the first rectifying device is electrically coupled to the first ground of the DUT, wherein the first ground of the DUT and the second ground of the switching module are separated by the first rectifying device.