Acqiris SA230E User Manual page 29

Signal Conditioning
The input signal is filtered for noise removal and smoothing before pulses analysis.
There are 2 symmetric finite impulse response (FIR) filters (3rd degree Savitzky-Golay filters):
The FIR order is programmable (the maximum order is fixed by the firmware).
Pulse Detection
A pulse is detected when the signal samples go through the following states:
1. Rising edge
The sample values exceed a configurable data threshold
and the sample values' derivative exceeds a configurable derivative rise threshold.
2. Falling edge
The sample values' derivative goes below a configurable derivative fall threshold minus
a configurable derivative threshold hysteresis.
3. End
The sample values' derivative exceeds the configurable derivative fall threshold plus the
configurable derivative threshold hysteresis.
Acqiris SA230E User's Manual
On the input signal
On the filtered input signal's derivative
2.3 Real-time peak-listing mode (PKL option)
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