I'm reading this datasheet, here there aren't a beautiful function like DC%=... So, i think a function that governate DC%(and the graph at page 41-42) is: DC%=minDC%+170*(maxDC%-minDC%)*(T-Tmin)/Trange where Trange is that wich in datasheet is called "effective Tange" at page 40. Trange=(maxDCdecimal-minDCdecimal)*Tr/170 where Tr is Trange not effective. Whit rivatuner i have this parameters: minDC=45 maxDc=100 Tmin=45 Trange=26 ------------- To set auto Tmin to off ------- Toperating=150 Tlow limit=0 Thight limit=150 The problem is if i draw graph(DC% / T) with this data i find a function that don't follow the real trend of DC% for T. I have 45% until my temp is under 55°C instead 45% untile temp is under 45°C(like graph). I have some question for Unwinder: 1)Trange in rivatuner i effective Trange or Tr? 2)DC in rivatuner are %percent or decimal? 3)Do you think this function is accurate or wrong?