A digital signal receiver includes a distributed information storage unit having a data storage device for storing broadcast information. The switches of this invention provide, for example, fair allocation of bandwidths to different network services, to different QoS classes within network services, and to different resources within the switch by use of, preferably, weighted, fair scheduling methods. A report is displayed in a second user interface of the tool health reporting system, the report including data associated with the distinct information type, the distinct report type and the distinct tool identifier, wherein the report correlates equipment based measurement data to product level measurement data. An outer pin is housed in the outer pin chamber, and an inner pin is housed in the inner pin chamber. The digital to analog functional module varies the switching frequency of the oscillating signal according to the digital random value. For purely measurement purposes, the fluid may be a non-abrasive media, however, in the event the workpiece orifice must be machined, it is possible to introduce a flowable abrasive media, and pass this media through the orifices until the desired pressure difference is achieved.