I see the acne uses a 72.48-- duty cycle and the cold laser uses a 50 duty cycle? Why the difference? And the offset is -100 and -100%.

The Cold Laser Acne Preset replicates scientific studies that used a series of laser pulses at that precise duty cycle and frequency. The generic Cold Laser Preset is designed for applying database frequencies. The Offset is a hardware requirement of the Cold Laser. This setting should be used for all Cold Laser Presets.

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