simultaneous spectrometer

A spectrometer which has more than one detector and enables the intensities of several spectral bands to be measured at the same time.
Source:
PAC, 1995, 67, 1725 (Nomenclature, symbols, units and their usage in spectrochemical analysis-IX. Instrumentation for the spectral dispersion and isolation of optical radiation (IUPAC Recommendations 1995)) on page 1729