A fitting for coupling a capillary to another component of a fluidic device is disclosed. A cutting guide is mounted to the alignment plate for rotation about an axis which is substantially parallel to the mechanical axis. In this state, the autonomous traveling unit is rotated by 90\xb0 to the right so as to face a plane formed by a second member of the charging unit at the right angle. Upon receiving the appropriate signal, the signal-actuated valve adjusts so as to alter the flow of particulate material. The optimal viewing schedule can then be generated based on the utility of each video asset and the time relevance that is associated with each video asset.