91
EN
Negative half-wave waveform
Hard rectangle / Soft rectangle / Triangle / Sine
Factory setting: Soft rectangle
Hard rectangle
pure rectangular waveform (stable but loud arc)
Soft rectangle
rectangular waveform with decreased edge steepness, for noise reduction compared to
the pure rectangular waveform
Triangle
triangular waveform
Sine
sinusoidal waveform (default low-noise and stable arc setting)