The PR-740 is the latest addition to the SpectraScan line and it is a portable, stand-alone instrument.It is a simultaneous acquisition spot spectroradiometer for spectroradiometric and photometric measurements in the lab or on the production floor.Spectral measurements are made from 380 to 780 nm at 1 nm increments. The bandwidth of the system is 8 nm. The PR-740 has a multiple aperture wheel and can be provided with 1 to 8 apertures.Photo Research SpectraScans have been providing solutions to the computer display and TV markets for decades. The PR-740/745 now makes it possible to easily address one of the toughest tasks, spectral contrast measurements, without having to relay on a second instrument.he PR-740/745 is not just a luminance meter. It's wide range of accessories can address virtually any light measurement application. For example, the LR-127 LED Analyzer is designed to measure discrete LED's for conformity to the CIE 127 Technical Report - Measurement of LED.The PR-740/745 has the two most wanted attributes of any light measuring instrument—superior sensitivity and speed. The PR-740/745 speed and sensitivity capabilitiescan provide acost effective solution to speeding up the QCphase of the manufacturing process.