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10.4.2 Upper Boundary of Linear Operating Range for the “High” range setting
Frequency
Weighting
Frequency
(Hz)
Upper Boundary
(dB[A,C,Z], rms)
Upper Boundary
(dB[A,C,Z], peak)
A 31.5 87.6
90.6
A 500 123.8
126.8
A 1000 127.0
130.0
A 4000 128.0 131.0
A 8000 125.9
128.9
C 31.5 124.0 127.0
C 500 127.0
130.0
C 1000 127.0 130.0
C 4000 126.2
129.2
C 8000 124.0 127.0
Z 31.5 127.0
130.0
Z 500 127.0 130.0
Z 1000 127.0
130.0
Z 4000 127.0 130.0
Z 8000 127.0
130.0
10.4.3 Lower Boundary of Linear Operating Range for the “Low” range setting
Frequency Weighting Frequency (Hz) Linearity Lower Limit (dBA, rms)
A 31.5 30.0
A 1000 30.0
A 8000 30.0
10.4.4 Lower Boundary of Linear Operating Range for the “High” range setting
Frequency Weighting Frequency (Hz) Linearity Lower Limit (dBA, rms)
A 31.5 46.0
A 1000 46.0
A 8000 46.0
10.4.5 Starting Point for Testing Boundaries of Linear Operating Ranges
The starting point at which to begin tests of level linearity deviation is 94 dB (1Pa, rms) at 1kHz. This
starting point is used for both “Low” and “High” dynamic range settings.
Frequency Weighting Frequency (Hz) Freq. Weight (dB)
Reference Starting Point
(dBA)
A 31.5 -39.4 54.6
A 1000 0.0 94.0
A 8000 -1.1 92.9
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