# Plasma THC P16 delay: raise for low-frequency plasma

- Source-Date (SAST): 2025-02-19 10:23
- Dest: both
- Review-after: 2027-08-31
- Status: current

## Facts

- Low-frequency plasma returns arc voltage slower than high-frequency plasma.
- On THC, raise **P16** from the default **0.2 s** to **0.5 s–1 s** so the controller waits long enough for the arc signal.