User manual
407790A-en-US_v2.0 8/16
46
9.Specifications
ApplicableStandards: IEC 61672‐1: 2013 Class 2, IEC 61260‐1: 2014 Class 2, ANSI S1.11: 2004
Class 2, ANSI S1.4: 1983 Type 2, ANSI S1.43: 1997 Type 2
Measurementfunctions: Simultaneous measurement of main channel and sub channel.
Frequency weighting and time weighting are set independently for main and sub channel.
Soundlevelmetermode: All‐pass processing for the measurement items listed below is
carried out separately for the main channel and sub channel
Analyzermode: For the main channel, octave, octave 1/3 or simultaneous octave, 1/3
octave band real‐time processing and all‐pass processing are carried out.
o For the sub channel, only all‐pass processing is carried out.
Processingtypesineachoperationmode
Channel Main Sub
Sound
levelmeter
mode
AP/OCT AP AP
Frequency
weighting
A/C/Z A/C/Z
Time weighting F/S/10ms/I F/S/10ms/I
Measurement
values
Lp, Leq, SEL, Lmax, Lmin, L
N
Lp, Leq, SEL, Lmax, Lmin, L
N
Analyzer
mode
AP/OCT AP, OCT AP
Frequency
weighting
A/C/Z A/C/Z
Time weighting F/S/10ms/I F/S/10ms/I
Measurement
values
Lp, Leq, SEL, Lmax, Lmin, L
N
Lp, Leq, SEL, Lmax, Lmin, L
N
Measurementtime: 1 to 59 seconds, 1 to 59 minutes, 1 to 24 hours
Microphone: ½ inch electret condenser type
Display: Backlit color TFT LCD (320×240 dot matrix)
Updatefrequency: 100ms
Accuracy:
±1.0dB (ref 94dB @1kHz)
MeasurementFrequencyrange:
Octave analysis 31.5 Hz
to
8 kHz; 1/3 Octave analysis 25 Hz to 10kHz
Frequencyweighting: ‘A’, ‘C’, ‘Z’
Inherentnoise: A‐weighting max. 17dB; C‐weighting max. 25dB; z‐weighting max. 30dB