After an analogue waveform is sampled in the analogue-to-digital conversion
process, the continuous analogue waveform is converted into a series
of pulses whose amplitude is equal to the amplitude of
the analogue signal at the start of the sampling process.
Since the sampled pulses have a uniform amplitude, the process
is called flat top sampling. Alternatively, in a process
called natural sampling, the amplitude of the sampled pulse is
allowed to vary with the amplitude of the analogue waveform
as it changes during the sampling period.
Other topics in our resources on Communications Systems related to Flat Top Sampling include: