There is, of course, a disadvantage because of the slightly increasing measurement time since the number of active elements on the multichannel detector is reduced. However, a combination of measurements with small middle slits in the low-frequency Raman region and middle or even wide slit width in the higher-frequency Raman region combined with the use of the full detector size can yield complete Raman spectra in much shorter times than is possible by means of single-channel detection. Appropriate slit setting could be made computer-controlled during a scanning multichannel measurement.
