PRBS Data Type
A pseudo-random binary sequence (PRBS) generates a digital pattern of information, which uses pseudo-noise to make it difficult to predict without knowing the actual sequence-generation algorithm. A PRBS pattern is generated using a linear-feedback shift register (LFSR) as shown below.
An LFSR is specified by the number of stages it contains and which of those stages ("taps") feed the exclusive-OR (XOR) gate within its feedback network. The PRBS output is taken from the last stage. With properly chosen taps, an L-stage LFSR produces a repetitive PRBS of length 2L–1. The clocking frequency of the LFSR determines the "bit rate" of the PRBS.
Select from the available PRBS data types available for your function generator (e.g., PN7, PN9, PN11, PN15, etc.).