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For more information on FFT
settings, see the “FFT and Tonality”
chapter in the Model 831 manual.
Frequency Span: defines the upper end of the frequency
response. Choices range from 100 Hz to 20 kHz as shown in
FIGURE 8-3.
FIGURE 8-3 Frequency Span
Lines: defines the number of discrete frequency bands.
Choices range from 400 to 6400 as shown in FIGURE 8-4.
FIGURE 8-4 Lines
Window: selects a window to provide emphasis or balance
between frequency selectivity and amplitude ripple as the
frequency varies from one bin to another. Choices are shown
in FIGURE 8-5.
FIGURE 8-5 Window
Frequency Weighting: A broadband Leq and Lpeak level
will be measured using this weighting as well as being
applied to the FFT spectrum.
8-4
Settings Page
SLM UTIL-G3 Manual