RivaTuner e ADT7473

Discussion in 'RivaTuner Advanced Discussion forum' started by blow, Mar 25, 2008.

  1. blow

    blow Member

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    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.
    [​IMG]
    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?
     
    Last edited: Mar 25, 2008
  2. Unwinder

    Unwinder Moderator Staff Member

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    I think that you've to reread the datasheet carfeully. RT displays units when you select a parameter, and duty cycle unit is %. And finally, search really does the magic, so use it.
     
  3. blow

    blow Member

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    Trange in RT is effective or not?
     
  4. Unwinder

    Unwinder Moderator Staff Member

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    Use search please! This thing (I mean search function) is effective for sure.
     

  5. blow

    blow Member

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    Im thinking my assumption is good, but my error is to use nvthermaldiode instead ADT7473.dll to monitoring core temperature...:bang:

    Here
    use this formula for Trange:
    TR=2/3*(Tmax-Tmin)/(Dmax-Dmin)

    Im using(according whit datasheet) this:

    Tr=Trange*170/(maxDC-minDC)
    where TRange is Tmax-Tmin and max/minDC is in decimal(0-255)

    mmmm...
     
    Last edited: Mar 25, 2008
  6. blow

    blow Member

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    Ok, all is correct, the different in two formulas is that im using decimal(0-255) for DC and ribbel use (0-1) but both have the same result.
    Good, now all work.
     
  7. blow

    blow Member

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    I have write this calc sheet, maybe can help someone.
     

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