Challenge:
A customer needed to detect intermittent open circuit defects. The defect may exist for an unusually short time so the fastest scan available for open circuit detection was needed.
Solution:
The Touch1's normal continuous scan does a good job of finding intermittent defects. Still, you may need more from the intermittent test. A custom component script, con_tst.cmp, was written to expand the capability of the test. It lets you specify the maximum resistance of a conductor or the maximum allowed change in resistance of a conductor during a special scanning process of the device under test. This custom component script is optimized for scanning speed.
Results:
The script takes approximately 0.0005 seconds per conductor using a 1500V Touch1. The high scanning speed along with the resistance threshold control creates the best possible test for finding an open circuit intermittent.
