The optimized models are used to calibrate the test system such that the test system corrects for any imperfections in performance measurements taken of a device under {HEAD ~ test} measured by {TAIL ~ the calibrated test system} 
measured by
The optimized models are used to calibrate the test system such that the test system corrects for any imperfections in performance measurements taken of a device under { HEAD ~ test } measured by { TAIL ~ the calibrated test system }
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 REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL