[IBIS-Users] iv-vt mismatch

Hi,

I am getting IV/VT mismatch for the ibis file I have attached. My
question is regarding how the error percentages are calculated?

#---------------------------------------------------------
ERROR - Model MPADP: The [Falling Waveform] 
      with [R_fixture]=50 Ohms and [V_fixture_max]=1.25V
      has MAX column DC endpoints of  1.06V and  1.44v, but
      an equivalent load applied to the model's I-V tables yields
      different voltages ( 1.06V and  1.49V),
      a difference of  0.03% and 12.27%, respectively.
#---------------------------------------------------------

(1) How is the error percentage calculated? I don't understand how this
12.27 came about. Can someone explain? 

(2) Also the errors are in the MAX corner while warnings are in the TYP
and MIN corner. I tried the suggestions in the NCSU website
(http://www.ece.ncsu.edu/erl/ibis/faq/S2IBIS3_FAQ.htm#_A5) for fixing
these errors but they were not helpful. If I am missing something can
someone point out?

The cell has different v_fixture voltage compared to its cell's vdd.

Thanks
Anand

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