Extech Instruments 407780A User Manual

407780A‐EU‐ENv1.34/14
8
IntegratingSoundLevelMetermeasurements
Theintegratingsoundlevelmodewillmeasurethesoundlevelovertimeandcalculatethe
followingresults:
Leq Equivalentcontinuoussoundlevelmeasurement
SEL Soundexposurelevelmeasurement
SPLMAXMaximumsoundlevelmeasurement
SPLMIN Minimumsoundlevel)measurement
(PH) PeakHoldsoundlevelmeasurement
Percentile Soundlevel(L05,L10,
L50,L90andL95)measurement
Whenusingthismeterinamodeotherthanthesoundlevelmeasurementmode,allprocessing
functionsprovidedbythemeterareperformedsimultaneously.Forexample,whenequivalent
continuoussoundlevelmeasurementisselectedtheexposurelevelandpercentilelevelarealso
determined.
1. Press
the buttontoswitchONthemeter.
2. PresstheA/Cbuttontoselectthedesiredfrequencyweighting.
3. PresstheFAST/SLOW/IMPULSEbuttontoselectthedesiredresponsetime.
4. Usethe▲▼buttonstoselectthedesireddBrange.Chooseasettinginwhichthebar
graphindicationregistersnear
themiddleoftherange.IftheOVERorUNDERindicators
switchONfrequently,changethelevelrangesetting.
5. Settingtheintegratingmeasurementtime.(DefaultorManual)
Defaulttimes:
a. PresstheINTEG TIMEbuttononcetoselectadefaultintegratingtime.
b. Usethe▼▲buttonstoselectthemeasurement
time.
c. Theselectionwillcyclethrough:1sec,3sec,10sec,30sec,1min,5min,8min,10min
15min,30min,1hour,8hours,24hours.
d. After5secondsofinactivitythemeterwillstorethedisplayed selectionandreturnto
thenormalmode.
Manuallysettime:
a. PressandholdINTEGTIMEfor3
secondstomanuallysettheintegrationtime.
b. Aflashingcursorindicatesthecurrentlyselectedparameter(seconds).
c. Usethe▼▲buttonstosetdesiredsecond.
d. PresstheINTEGTIMEbuttontomovetothenextparameter(minutes),repeatthis
procedureuntilthedesiredminutesandhourshavebeenset.Press
theINTEGTIME
buttontostorethesettingandtoexitthismode.Themaximummeasurementtime
settingis100hours.

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Extech Instruments 407780A Specifications

General

Brand	Extech Instruments
Model	407780A
Category	Measuring Instruments
Language	English