Abstract: A circuit board diagnostic operating center (10) including a large flat panel display (18) used for displaying the test system assets (instruments 12) and the circuit card assembly (CCA) schematic diagram, a small flat panel display (20) to display ancillary information, a computer (24) that executes the system application program and provides the means to communicate with automated test equipment. The diagnostic operating center may contain industry standard programmable equipment and instrumentation, or may contain independent instrumentation, or a combination. Physical CCA signal to operating center instrumentation interconnections are accomplished via a cross-point matrix (16). A graphical user interface (GUI) in combination with diagnostic operating center software and hardware provides an interactive means to visually create and store test sequences by capturing the technician's diagnostic methodology.