Test fixture carrying a channel card for logic level translation

Claim 1

A system for testing a board under test comprising: a testing machine having a plurality of channels, each channel supplying test signals to, and receiving test responses from, the board under test; a test fixture having a first plurality of connecting members on a first surface arrayed for connection to the board under test so as to pass test signals thereto and to receive responses therefrom and a second plurality of connecting members arrayed in a plurality of spaced arrayed rows on second, opposed surface, each of the first connecting members electrically coupled to a separate one of the second connecting members; a plurality of channel cards, each coupled to a separate one of the channels of the testing machine for providing an electrical connection to said channel to facilitate the passage of test signals therefrom and the passage of test responses thereto; and a plurality of paddle cards, each providing an electrical connection between a separate one of the second connecting members of the test fixture and a separate one of the channel cards, Wherein the improvement comprises: at least one of the paddle cards contains at least one circuit for electronically translating responses received from the circuit board from a first logic level to a second logic level.

Claim 2

A system for testing a board under test comprising: a testing machine having a plurality of channels, each channel supplying test signals to, and receiving test responses from, the board under test; a test fixture having a first plurality of connecting members on a first surface arrayed for connection to the board under test so as to pass test signals thereto and to receive responses therefrom and a second plurality of connecting members arrayed in a plurality of spaced arrayed rows on second, opposed surface, each of the first connecting members electrically coupled to a separate one of the second connecting members; a plurality of channel cards, each coupled to a separate one of the channels of the testing machine for providing an electrical connection to said channel to facilitate the passage of test signals therefrom and the passage of test responses thereto; and a plurality of paddle cards, each providing an electrical connection between a separate one of the second connecting members of the test fixture and a separate one of the channel cards, Wherein the improvement comprises: at least one of the paddle cards contains at least one circuit for electronically translating responses received from the circuit board from a first logic level to a second logic level.