... 4.calibration restore XO-1101,XO-1102,XO-1500,XO-1502 are universal types of spectrophotometer, mainly used for basic ... /A, and A,T,C direct reading.Also have functions of self diagnosis and calibration restore,to ensure stability and ... directly;use special PC control station,USB transmission online.Complete functions. Besides for luminosity measurement,support the quantitative analysis,automatic ...