User manual

407780A‐EU‐ENv1.34/14
2
Introduction
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ThankyouforselectingtheExtechInstrumentsModel407780A.Thisdeviceisshippedfullytested
andcalibratedand,withproperuse,willprovideyearsofreliableservice.Pleasevisitourwebsite
(www.extech.com)tocheckforthelatestversionofthisUserGuide,ProductUpdates,and
CustomerSupport.
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Features
TheSoundLevelMetercomplieswiththerequirementsofIEC61672‐1:2003standardfora
Class2instrument.
Theinstrumentcontainsseveralfeatureswhichpermitsoundlevelmeasurementsundera
varietyofconditions.
Featuresinclude:
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Fivemeasurementranges
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Fast,SlowandImpulsetimeweightingsettings
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AandC
frequencyweightingsettings
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Storageofupto32000measurementrecords
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USBserialportfor downloadingrecordstoacomputerorrealti meanalysis
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AC/DCsignaloutputsareavailablefromasinglestandard3.5mmcoaxialsocketsuitable
forusewithafrequencyanalyzer,levelrecorder,FFTanalyzer,graphic
recorder,etc.
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Leq,SEL,SPLMAX,SPLMIN,PH(PeakHold),L05,L10,L50,L90,andL95,tenmeasured
parametersaremonitoredduringmeasurement
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Presetmeasurementtime
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Soundlevelalarmoutputconnector
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