The process of dividing an analog signal into a string of discrete outputs, each of constant amplitude, is called :
Quantization
When an analog signal is digitised, its continuous range of amplitudes is mapped onto a finite set of fixed levels.
Breaking the signal into a sequence of discrete outputs, each held at one constant amplitude level, is called quantization.
Strobing refers to sampling at instants, amplification only scales the signal and conditioning prepares or filters it; none of them produce constant-amplitude discrete levels.
So the described process is quantization.
Hence, Quantization.
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