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IRE at ADV7171 without pedestal setting

Question asked by daisu on Feb 18, 2014
Latest reply on Feb 26, 2014 by daisu

Hello all,

 

Please let me know your advice the relationship between input signal and brightness described in datasheet P.13 DATA PATH DESCRIPTION.

Question1

We think below. Is this correct ?

Input 16: IRE0
Input 235:IRE 100


Question 2

  Is IRE  -7.3 IRE to 109 IRE at Input 0 ~255.?

  Equation
  100 / (235 - 16) ≒ 0.4566( IRE/ LSB)

IRE at Input 0 is 0.4566 x (0-16) ≒ -7.3 IRE ?
IRE at input 255 is 0.4566 x (255 - 16) ≒ 109 IRE?

 

Regards,

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