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Specifications
Display
Display Type: 4-digit LED
Sampling Rate: 20 per second
Display Period: 0.5 seconds
Measurement Ranges and Characteristics
Low: 35 dB to 90 dB
High: 75 dB to 130 dB
Dynamic Range: 55 dB
Frequency Range: 31.5 Hz to 8 kHz
Frequency Weighting:
A-weighted Scale: For common sounds (500 Hz to 8 kHz) such as human
voice, electric tools, telephone ringer, and door bell
C-weighted Scale: For low frequency sounds (31.5 Hz to 500 Hz) such as
fluorescent lights, transformers, and computer power supply fans
10
C-weighted
0
–10
–20
–30
–40
–50
–60
–70
–80
10
100
Time Weighting:
Fast: 125 ms
Slow: 1 s
Accuracy: ±1.5 dB (under reference conditions)
Resolution: 0.1 dB
8
A-weighted
1000
10000
Frequency—Hz
Response curve
per ANSI S1.4.
Solid portion
shows frequency
range of this
instrument.
100000
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