Title :
Analog AC harmonic method for detecting solder opens
Author :
Suto, Anthony J.
Author_Institution :
GenRad Inc., Concord, MA, USA
Abstract :
Vectorless test techniques are attractive methods to quickly and inexpensively identify and diagnose common process related defects on manufacturers´ printed wiring boards. Junction Xpress is a new AC method developed to locate open and marginal solder connections without the use of digital vectors or overclamp style capacitive probes. Measuring response harmonics rather than simply the fundamental AC response reduces the tendency of false accepts of open connections
Keywords :
analogue circuits; automatic testing; fault diagnosis; harmonic analysis; printed circuit testing; production testing; soldering; 50 to 80 ohm; AC method; AC response; Junction Xpress; analog AC harmonic method; digital vectors; learning; marginal solder connections; open connections; overclamp style capacitive probes; printed wiring boards; response harmonics; software algorithm; solder opens; vectorless test; Circuit testing; Detectors; Manufacturing processes; P-n junctions; Packaging; Pins; Power harmonic filters; Protection; Substrates; Wiring;
Conference_Titel :
Test Conference, 1996. Proceedings., International
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-3541-4
DOI :
10.1109/TEST.1996.557158
