Serial testing of removable circuit boards on a backplane bus

Details Serial testing of removable circuit boards on a backplane bus Serial testing of removable circuit boards on a backplane bus

G - Physics

01

R

G01R 31/319 (2006.01) G01R 31/3185 (2006.01) G06F 11/22 (2006.01) G06F 11/267 (2006.01)

Patent

CA 2104685

A system for controlling daisy-chain testing of removable printed circuit boards (156, 158) installed along a backplane bus (152) facilitates the use of serial testing methods for circuit boards which are designed according to boundary-scan testing standards. The system automatically controls propagation of serial test data from a serial data pattern generator (154) to a removable circuit board (156) and then from circuit board to circuit board as installed consecutively along the backplane bus (152), and from the last circuit board installed on the bus (152) to a pattern comparator (154) which determines whether the pattern matches an expected pattern to isolate components on the circuit boards which are not functioning properly.

Système permettant de contrôler la vérification en guirlande de plaquettes à circuits imprimés amovibles (156 et 158) enfichées dans un fond de panier (152); le système en question facilite la mise en oeuvre de méthodes de vérification en série de plaquettes à circuits imprimés conçues conformément aux normes applicables aux chaînes de test périphérique. Le système contrôle automatiquement la propagation des données des tests entre un générateur (154) de profil de données en série et une plaquette à circuits imprimés amovible (156), et d'une plaquette à circuits imprimés à une autre à mesure qu'elles sont enfichées dans le fond de panier (152), et entre la dernière plaquette à circuits imprimés enfichée dans le fond de panier (152) et un comparateur de profil (154), qui détermine si le profil obtenu correspond au profil attendu afin d'isoler les éléments non conformes.

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