Title :
Using power supply current monitoring and P1149.4 for parametric testing of passive components
Author :
da Silva, J. Machado ; Matos, J. Silva
Author_Institution :
Fac. de Engenharia, Porto Univ., Portugal
Abstract :
The detection and location of faulty passive components is crucial in testing printed circuit boards. This issue is one of the objectives to be satisfied by the development of a mixed-signal test bus standard-IEEE P1149.4-now on the final phase of evaluation. In this paper a method is presented that enables electronic in-circuit testing for presence and value of passive components, based on the use of analogue boundary modules like those developed under P1149.4, but making use of the positive power supply rail as an analogue test line. This method allows saving one analogue test line while profiting from the eventual presence of current sensors inserted for power supply current monitoring
Keywords :
IEEE standards; boundary scan testing; electric current measurement; power supply circuits; printed circuit testing; IEEE P1149.4; analogue boundary module; current sensor; electronic in-circuit testing; mixed-signal test bus standard; parametric testing; passive component; power supply current monitoring; printed circuit board; Circuit faults; Circuit testing; Condition monitoring; Current supplies; Electrical fault detection; Electronic equipment testing; Fault detection; Power supplies; Printed circuits; Rails;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.612885
