An EMI shielding assembly includes a bracket and a resilient shield. In the case where more than one analytes are detected, each monodisperse microsphere has a resolvable light scatter signal. Some embodiment includes configurations for manual or powered adjustment of a lateral position of the implement in a direction transverse to the longitudinal axis of the working machine. The alignment member is sized to limit insertion into the housing recess to insertion when the alignment member is in the insertion orientation. In a first printer mode, data is sent to the JIB as it is RIPed and no provision is made for an interrupt for a copier job nor can a copy job be scanned in. In this manner, the effects of manufacturing variations and operational variations on the average pulse frequency can be eliminated, or at least diminished.