{HEAD ~ The signal} written at {TAIL ~ each write power level} Pwm is read to measure the Henv and Lenv of the read signal amplitude, and calculations are performed to determine the modulation Mm=/Henv corresponding to each Pwm value 
written at
{ HEAD ~ The signal } written at { TAIL ~ each write power level } Pwm is read to measure the Henv and Lenv of the read signal amplitude , and calculations are performed to determine the modulation Mm=/Henv corresponding to each Pwm value
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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