A device detects and diagnoses correlated anomalies of a network. This method is mainly applicable to plasma display panel. A method for operating a laser drilling system where high precision, controlled hole shapes in a workpiece are drilled includes using a scan mirror and milling algorithm, and using a picosecond laser in conjunction with a DOE, thus ensuring that spectral bandwidth issues and thermal issues are addressed to improve the quality and repeatability of the holes. The amount of solution soaked into the cathode results a total final weight percent of Ag in the cathode between about 0.