4.4 Thresholding (Zero-Suppress - ZS1 option)
Acqiris SA220P User's Manual 51
The following sections describe the zero-supress concept when selecting waveforms and peaks
above a threshold. It is also possible to select signals below a threshold by inverting the data
values (using DataInversionEnable), before applying the zero-suppress threshold. See
Using zero-suppress with negative pulses (page 59) for details.
Definitions
The threshold is the user-defined level used to distinguish meaningful waveform sections, i.e. the
meaningful acquired samples, from all others.
A gate is a region of interest and designates the successive waveform samples that are selected,
based on the threshold criteria.
A gated-record corresponds to the data recorded within the gate.
Figure 4.4 - Illustration of a gated- record with hysteresis.
The hysteresis applies at the end of the gate and defines the value, below the threshold, at which
samples will be ignored. It is defined as an absolute value.
Sequence
The zero-suppress processing manages multiple gates within the triggered records.
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