A method and apparatus for testing communications within a broadband network between a network edge device and a customer premises device. The molecule decarboxyles to form a radical. Imagery collected from calibration beads can be used to determine core size and stability and TDIflow speed synchronization. The print controller also includes a partitioning system operable to process the full sheetside bitmap to identify the pixels in the full sheetside bitmap designated for printing on each of the printhead arrays, and to generate a partitioned sheetside bitmap for each printhead array that contains essentially the pixels designated for printing on the printhead array.