Boundary-scan

Boundary-Scan: How IEEE 1149.1 Enables Structural Board Test Without Physical Probe Access

As component densities rise and physical test access on PCBs shrinks, boundary-scan testing based on IEEE Std. 1149.1 has become an indispensable structural test method in electronics manufacturing. This article explains the underlying architecture, the test instruction set, and the practical considerations for integrating boundary-scan into a modern production test strategy.