In one embodiment, a surface analyzer system comprises a radiation targeting assembly to target radiation onto a surface, a reflected radiation collecting assembly that collects radiation reflected from the surface, and a signal processing module. With aid of a sensor, print clock pulses are generated that are supplied to a print controller depending on a feed of the printing substrate. A learning section generates prediction coefficients based on characteristics of the playback signal and the original input signal. Next, the processor receives a plurality of NFC test instructions, communicates in a transaction mode of operation and then in a terminal mode of operation with the NFC-enabled device, and transmits NFC test data to the central server computer. Based on the states of the selection signals, one of the storage locations is coupled to the read port via the multiplexers of the multiplexer tree.