A modular cluster tool is disclosed. The system uses a novel Time-Shared Full Duplex protocol for communications. The min-max module receives the image signal, searches for a minimum and maximum within at least one window centered on a current pixel in the image signal. In one exemplary embodiment, the performance information may be used by an on-line system configured to automatically determine the performance margin with which RFID tags are being read in an RFID system, or to automatically tune the RFID system to achieve a desired performance margin. The insulating barrier engages a portion of the fuse in the non-interrupted state thereof. The abutting portion engages with a bottom surface of a heat sink before the clip secures the heat sink assembly to a circuit board.