Re: Custom Fuction CF16
Date: July 31, 2019 07:48AM
the existence of this function dates back to the times when quite a number of divers used straigth Bühlmann without the GF extension. With straight Bühlmann, each ascent to the next deco stop brings the leading tissue to 100% super-saturation. So to put in some safety margin, people stayed a little bit below the stop depth, reducing the supersaturation a bit. The CF16 function tells the deco calculation how much deeper you intend to stay below all the stop depths. As staying below stop depth increases the deco time, the calculations can now figure this in and deliver corrected results, that is longer stop times.
As using GFs became common as of now, and with resonable GF values chosen, stopping at the exact stop depth (and even oscillating a bit around it) is ok to do. So it is ok to set the CF16 value to 0 if you want. Actually, in the latest hwos Tech firmware, this parameter has recently been removed from the code for exactly this reason.