Patent ID: 9453875
Filing Date: 2016-09-27
CPC Classification: G01R

Claim Text:
1. A circuit board tester comprising: a probe plate; a first set of test probes extending from the probe plate and having a first length; a second set of test probes extending from the probe plate and having a second length; a load plate to support a circuit board under test, the load plate having plural openings to pass through the first and second sets of test probes; a shuttle plate disposed between the load plate and the probe plate, the shuttle plate having plural openings to pass through the first and second sets of test probes; and intermediary members disposed between the load plate and the shuttle plate, the intermediary members having an extended position to maintain a first predetermined distance between the load plate and shuttle plate, and having a receded position to maintain a second predetermined distance between the load plate and the shuttle plate; wherein: the intermediary members include at least four members disposed proximate each corner of a socket integrated in the circuit board; the first predetermined distance brings the first set of test probes into contact with the circuit board but not the second set of test probes; the second predetermined distance brings both the first and second sets of test probes into contact with the circuit board; the intermediary members comprise plural structures extending from the load plate towards the shuttle plate and the receded position comprises insertion of the plural structures into openings formed in the shuttle plate; and the shuttle plate selects the extended position or the receded position by sliding relative to the load plate.