Amplitude Limitation
Electronic and digital signal processing systems possess an upper boundary beyond which signals cannot be accurately represented. In sensor design and signal conditioning, dynamic range clipping occurs when the input signal exceeds the maximum voltage range of the amplifier or analog-to-digital converter. This limitation truncates the peaks of the waveform, replacing the original signal peak with a flat plateau.
Signal Saturation
The sudden flattening of the peak values introduces high-frequency harmonic components that were not present in the original physical event. When dynamic range clipping occurs, the lost information cannot be recovered by subsequent digital processing. This loss of signal integrity distorts the computed root-mean-square values and spectral analysis results.
Engineers often include analog anti-aliasing filters with low attenuation slopes to mitigate some of the high-frequency artifacts, but the fundamental signal content remains compromised.
Calibration Level
Laboratory tests establish the exact threshold of saturation by applying incremental input steps until the output ceases to increase linearly. This measurement determines the maximum linear input limit for the sensor under test. The safety margin between the expected operational peaks and this saturation point must be verified to prevent data loss.
Harmonic Distortion
Severe clipping changes the sinusoidal waveform into a shape closer to a square wave. This dynamic range clipping produces odd-order harmonics that contaminate the frequency spectrum of the sensor output. System designers must adjust the gain stage to keep the signal within the linear operating region of the converter.
