What parameter evaluates distortion of an AFSK signal caused by excessive input audio levels?
Signal-to-noise ratio
Baud error rate
Repeat Request Rate (RRR)
Intermodulation Distortion (IMD)✓Bonne réponse
Explication
Overdriving an audio input makes the stage non-linear, and non-linearity mixes the signal components together to produce new frequencies at their sums and differences. Measuring those intermodulation products relative to the wanted signal therefore quantifies exactly this defect.