Title :
Microcomputer-based testing and repairing system using digital signature mapping
Author :
Refai, Mohamed Khalil
Author_Institution :
Syst. & Comput. Dept., Al-Azhar Univ., Tanta, Egypt
Abstract :
A novel approach called digital signature mapping (DSM) is proposed for testing and repairing loaded printed circuit boards (LPCBs). This microcomputer-based approach performs real-time measurement for LPCBs under test, particularly CNC (computer numerical control) controller boards. DSM uses the MC6809 and well-known test tools, so the proposed system is not very expensive and is very useful in testing and repairing small quantities of LBCBs. The required software, which is generated by mapping the signature of test points of a good LPCB, makes it suitable for application in a factory that uses a variety of CNC machines.<>
Keywords :
automatic testing; electronic engineering computing; logic testing; microcomputer applications; printed circuit testing; CNC controller boards; DSM; LPCBs; MC6809; computer numerical control; digital signature mapping; loaded printed circuit board repair; microcomputer-based testing; real-time measurement; Application software; Circuit testing; Computer numerical control; Digital signatures; Particle measurements; Performance evaluation; Printed circuits; Production facilities; Software testing; System testing;
Conference_Titel :
Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/IAS.1989.96965
