Methods and apparatus for testing electronic devices
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United States of America Patent
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Feb 24, 2004
Grant Date -
Jul 17, 2003
app pub date -
Jan 15, 2002
filing date -
Jan 15, 2002
priority date (Note) -
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Abstract
Apparatus for testing an electronic device under a plurality of test conditions created during a test sequence includes an arbitrary waveform generator that sequentially generates the plurality of test conditions. The test conditions include selectively forcing voltage or forcing current over a wide range of amplitudes, measuring a plurality of results with various resolutions and at selected times during the test sequence, changing filter settings, gains and other parameters. The test conditions are selected and set under the control of a system clock using data stored in memory. A controller initiates the test sequence of the apparatus and determines whether measured results are within predetermined specifications. The controller uses processor-driven software, but the settings of the test apparatus are changed at predetermined times during the test sequence, without controller intervention. Several test apparatus are typically managed by one controller. Performing test sequences without controller intervention reduces the time required for testing.
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