... The FPGA-based Mock spectrometer (named after its designer/builder, the late Jeff Mock) contains 14 boxes, each of which contains 2 boards handling bandwidths up to 172 MHz each. Initially, the Mock spectrometer was only available for use with the ALFA 7-beam L-band array, for which the 14 boxes are divided into 2 groups of 7 boxes, each of which can be configured as an independent spectrometer. ... Details can be found at . ... General details of Mock spectrometer operations can be found at . ...