Pulse-jet ejection head diagnostic system

A pulse jet head diagnostic system is provided for a pulse jet biopolymeric array fabrication device. The system and associated method enable electrically monitoring signals produced or output by a driver for effecting droplet ejection from an ejection head spaced from a substrate surface and during movement relative to the substrate surface onto the substrate surface. Real-time errors in performance may be reported, or results simply recorded for post-fabrication quality control. Quality control checking may be performed in-process during array fabrication or the systems described may be used as off-line diagnostic tools for ejection elements and/or fire pulse aspects of an array fabrication system. A computer program product that can execute the foregoing methodology and/or provide results of the same is also provided.