Similarly, an output reference black level can be specified by default or through an output range control so that {TAIL ~ the output reference black level} is set equal to {HEAD ~ the input reference black level} set during calibration 
Similarly , an output reference black level can be specified by default or through an output range control so that { TAIL ~ the output reference black level } is set equal to { HEAD ~ the input reference black level } set during calibration
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH