The reference spectra feature is used for comparison of any measured frequency spectrum with a pre-selected user defined spectrum. It functions for 1/1-octave, 1/3 octave and the spectral weighting networks. The measured spectrum may be compared to an upper limit, a lower limit or both. If the measured signal exceeds the boundaries, a “NoGo” warning is given on the screen, and a digital signal is set on the I/O port. This is useful for many applications such as product control and spectrum comparison.

Option 2 requires that minimum option 1 be installed!