Extech Instruments 407780A User Manual

407780A‐EU‐ENv1.34/14
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6. Pressthe► ǁ buttontostartthemeasurement,the►symbolandtheelapsed
measurementtimeisdisplayed.
 Whenthemeasurementtimehaselapsed,themeasurementautomaticallyterminates
andthesymbolisdisplayed.
 Duringmeasurements,the► ǁbuttoncanbeusedtopauseandresume
atest.
 Duringpause,thepausesymbolǁisdisplayed.
 Toterminatethemeasurement,pressandholdthe► ǁ buttonfor2seconds.
 Ifanunderoroverrangeconditionoccursatleastonceduringmeasurement,theOVER
orUNDERindicatorappearstoindicatethattherecorded
datacontainsover‐rangeor
under‐rangedata.
 Duringthisproceduremostofthebuttons,suchastheA/Cbuttonandlevelrange
buttons,areinoperative.Onlythe► ǁ buttonandtheLeqSELSPLbuttonscanbeused.
Allothersettingsmustbemadebeforestartingthemeasurement.
 Pauseintervalsarenotincludedinthemeasurementtime.

7. Whenthemeasurementiscompleted,pausedorinprogress,presstheLeqSELSPLbutton
tocyclethroughanddisplaythefollowingmeasurementresults.
Leq:Equivalentcontinuoussoundlevelwithstartmeasurementtime.
SEL:Soundexposure
levelwithterminatemeasurementtime.
SPLMAX:Maximumsoundlevelwithtime.
SPLMIN:Minimumsound levelwithtime.
PH:PeakHoldsoundlevel
L:055%percentilesoundlevel
L:1010%percentilesoundlevel
L:5050%percentilesoundlevel
L:9090%percentilesoundlevel
L:9595%percentilesound
level
SPLINSTCurrentsoundlevelwithcurrenttime.
IfOVERisflashing,therecordeddatacontainsover‐rangemeasurements.
IfUNDERisflashing,therecordeddatacontainsunder‐rangemeasurements.
8. Pressandholdthe► ǁ buttonfor2secondstoexitthismeasurementmode,clearthe
measured
result,andtoreturntothenormalsoundlevelmeasurementmode.

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Extech Instruments 407780A Specifications

General

Brand	Extech Instruments
Model	407780A
Category	Measuring Instruments
Language	English