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Measuremen functions
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Sound level LP
Equivalent continuose sound level Leq
Sound exposure level LE
Maximum sound level Lmax
Minimum sound level Lmin
Percentile sound level LN(5 selectable settings)
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Measuremen Time
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10seconds, 1, 5, 10, 15, 30minutes, 1, 8, 24 hours, and manual(maximum 200 hours)
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Measurement range
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A weighting : 28 to 138 dB
C weighting : 33 to 138 dB
FLAT : 38 to 138 dB
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Inherent noise
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A weighting : 20 dB or less
C weighting : 20 dB or less
FLAT : 32 dB or less
Linearity range 100 dB
Reference sound pressure level 94dB
Reference level range 30 to 120 dB
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Level range selection
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6 ranges in 10-dB steps 20 to 80 dB
20 to 90 dB
20 to 100 dB
20 to 110 dB
30 to 120 dB
40 to 130 dB
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Frequency range
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Overall characteristics including microphone : 20 to 8000 Hz
Electrical circuit characteristics (AC output) : 10 to 20000 Hz
Electrical circuit characteristics (RMS) : 10 to 140000 Hz
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Frequency weighting |
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A, C, FLAT |
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RMS detection Digital processor |
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Time weighting : Fast, Slow |
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Calibration |
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Electrical calibration with 1-kHz sine wave signal from built-in oscilator
Acoustic calibration using sound calibrator
Sampling interval 30.3㎲(Leq, LE), 100ms(LN) |
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Data store functions |
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Data can be stored in the internal memory |
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Microphone |
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1/2-inch electret condenser type
Model : UC-52
Preamplifier : NH-21 |
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Display |
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Backklit LCD (128×64dots+121icons)
Display screens
Numeric and bar graph indicaton of sound level
Processing results screen
Level-timi graph (real-time level recording with 20-second horizontal axis)
Message on menu screens can be changed into English, Germany or Spanish) |
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Outputs |
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AC/DC out
I/O connector (Sound level meter control from and data output to a computer)
Data output to printer DPU-414/CP-11/CP-10 |
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Dimensions |
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Apporx, 260 × 76 × 33mm |
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Weight(excluding batteries) |
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Apporx, 400g |
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Supplied accessories |
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Windscreen WS-10 1
Carrying case NL-21-031 1
Connector cover(mounted on unit) NL-21-005 1
Hand strap VM-63-017 1
Batteries IEC R6P 4 |
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Optical equipment |
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AC adapter NC-34 series
AC adapter with CE mark UP0181165A (100 to 250V, 50/60 Hz)
BNC-to RCA cable CC-24
Microphone extension cable EC-04 series
Serial I/O cable CC-92
Printer cable CC-93
Sound calibrator NC-74
Pistonphone NC-72
Level recorder LR-06/LR-07 |
