Patent ID: 7855571
Filing Date: 2010-12-21
Classification: G01R

Abstract:
1. A testing circuit board used in a testing system with a tester and a handler for transmitting a plurality of testing signals provided by the tester to test at least two devices under test located on the handler, comprising: a connecting board coupled to the handler, having at least two connecting sockets respectively coupled to the devices under test, wherein each of the connecting sockets has a plurality of connecting terminals and a determining terminal; a load board coupled to the tester, having at least two joining sockets each having a plurality of joining holes and a determining hole, wherein the joining sockets are respectively located corresponding to the connecting sockets and the determining holes are respectively located corresponding to the determining terminals; and at least two connecting interfaces coupled between the connecting sockets and the joining sockets for transmitting the testing signals for testing the devices under test, wherein the connecting sockets comprise a first connecting socket having a first determining terminal and a second connecting socket having a second determining terminal, wherein the first determining terminal is located in a first relative position relative to the first connecting socket and the second determining terminal is located in a second relative position other than the first relative position and relative to the second connecting socket.