7
Comparison of Frequency Weightings and Tolerance Limits
Frequency
Hz
A Weighting
Characteristics
C Weighting
Characteristics
Tolerance
(IEC 61672
class 2)
31.5
-39.4dB
-3dB
±3.0dB
63
-26.2dB
-0.8dB
±2.0dB
125
-16.1dB
-0.2dB
±1.5dB
250
-8.6dB
0dB
±1.5dB
500
-3.2dB
0dB
±1.5dB
1K
0dB
0dB
±1.0dB
2K
+1.2dB
-0.2dB
±2.0dB
4K
+1dB
-0.8dB
±3.0dB
8K
-1.1dB
-3dB
±5.0dB
Time Weightings (Fast & Slow) Characteristics
Time Weighting
Characteristics
Max Response
Reference
continuous Signal
Tolerance
(IEC 61672 class 2)
F (Fast)
-1.0dB
±1.0dB
S (Slow)
-4.1dB
±1.0dB
Included
• Dosimeter
• Microphone with Clip
• Batteries
• Wrist Strap
• Carrying Case
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