Excavating
Patent
1978-07-17
1980-07-08
Malzahn, David H.
Excavating
324 73PC, G06F 1100, G01R 1512, G01R 3102
Patent
active
042119170
ABSTRACT:
A system by which a plurality of different circuit boards can be reliably tested by a single testing apparatus having a plurality of test programs adapted for testing particular circuit boards. Each circuit board has a pair of non-circular keying pins, with each circuit board having its particular pair of pins arranged in a unique combination of angular positions. There is an inter-facing member connected between the circuit board to be tested and the testing apparatus. The inter-facing member has a pair of rotatably mounted indexing discs, each having a plurality of receptacles, and each receptacle having a particular angular orientation to receive a keying pin of a similar angular orientation. A particular circuit board can be mounted to the inter-facing unit by moving the two indexing discs to the appropriate location so that the appropriate receptacles of the two discs receive the two keying pins of that particular circuit board. When the indexing discs are in a position to receive a particular circuit board, this connects predetermined circuit elements to the test apparatus to provide an identifying signal to the test apparatus to indicate the particular circuit board which is connected to the inter-facing member. This signal insures that the test apparatus is arranged to utilize the proper test program for that particular circuit board.
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Malzahn David H.
The Boeing Company
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