Technical Information
Weighting Characteristics
056-652, Rev.D 1100/2100 SLM models
Weighting Characteristics
The weighting characteristics (frequency response) for A and C are shown in
Figure 11. The "A" weighting response emulates the low level response of the
human ear and is used for most industrial and community noise measurements.
Generally, "C" weighting is used for measuring noise reduction in hearing
protectors and for other scientific purposes.
Figure 11: A & C Weighting
Internal Electrical Noise
The normal measurement range of the 1100 meter is approximately 30 to 140
dBA and 40 to 140 dBC. The inherent noise level is typically 24 dBA.
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