As total gain is increased beyond the user established {TAIL ~ maximum shutter gain value}, the incremental change in {HEAD ~ gain} is performed in substantially the same gain step sizes 
As total gain is increased beyond the user established { TAIL ~ maximum shutter gain value } , the incremental change in { HEAD ~ gain } is performed in substantially the same gain step sizes
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH