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Extech Instruments 407780A User Manual

Extech Instruments 407780A
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407780AEUENv1.34/14
17
RANGE:60120dB.Teststartingpoint94dBforallweightingsandfrequenciesexcept31.5Hz
Aweighted,forwhichthestartingpointis74dB.
FREQUENCY
Hz
WEIGHTING
L.O.R.
dB
WEIGHTING
L.O.R.
dB
31.5 A 60.080.6 C 60.0117.0
1000 A 60.0120.0 C 60.0120.0
4000 A 60.0120.0 C 60.0119.2
8000 A 60.0118.9 C 60.0117.0
RANGE:70130dB.Teststartingpoint104dBforallweightingsandfrequenciesexcept31.5Hz
Aweighted,forwhichthestartingpointis84dB.
FREQUENCY
Hz
WEIGHTING
L.O.R.
dB
WEIGHTING
L.O.R.
dB
31.5 A 70.090.6 C 70.0127.0
1000 A 70.0130.0 C 70.0130.0
4000 A 70.0130.0 C 70.0129.2
8000 A 70.0128.9 C 70.0127.0
Frequencyrange: Overallcharacteristicsincludingmicrophone:31.5to8000Hz
Frequencyweighting: A,meetstherequirementofIEC616721forclass2Aweighting.
C,meetstherequirementofIEC616721forclass2Cweighting.
Timeweighting(RMSdetection): Fast,accordingtoIEC616721class2.
Slow,
accordingtoIEC616721class2.
Impulse,accordingtoIEC616721class2.
Referenceconditions:
Typeoftheacousticfield: Free
Referencesoundpressurelevel: 94.0dB(relatedto20
Pa)
Referencelevelrange: 60to120dB
Referencefrequency: 1000Hz
Referencetemperature: +23
o
C(73.4
o
F)
Referencerelativehumidity: 50%RH
Referencestaticpressure: 101.325kPa
Referenceincidencedirection: Perpendiculartothefrontofthemicrophonediaphragm.
w ww . . co m
information@itm.com1.800.561.8187

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Extech Instruments 407780A Specifications

General IconGeneral
BrandExtech Instruments
Model407780A
CategoryMeasuring Instruments
LanguageEnglish

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