The method 1, wherein the compensation voltage is determined by calculating a difference between the value of the at least one parameter and a fixed stored value and determining {HEAD ~ the compensation voltage} from {TAIL ~ a stored relationship} of differences to compensation voltages 
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The method 1 , wherein the compensation voltage is determined by calculating a difference between the value of the at least one parameter and a fixed stored value and determining { HEAD ~ the compensation voltage } from { TAIL ~ a stored relationship } of differences to compensation voltages
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH