Extech Instruments SL400

11SL400‐en‐GB_V1.02/16
Operation
SoundLevelMeasurementProcedures
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Pressthe buttontoturnonthemeter.TheLCDwilldisplaytheSPLsymbol,withSLMonthe
lowerline.IfSLMisnotvisiblepressSETandNDMwillappear,presstheDownarrow to
changetoSLMandpressenter
toexit.
Pressthe buttontoscrollthroughtheavailabletestfunctionsforthismode:SPL,Leq,SEL,and
PKMAX.
Pressthe
buttontobegintesting.Pressthe buttonagaintopausetesting.
Ifthereadingexceedsthehightestingrange,theLCDdisplaywillshow
.Ifthereadingis
belowthelowtestingrange,theLCDdisplaywillshow .
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TheLeqintegraltimeisthesamevalueasthesamplingtimesetting.
Whenthesamplingtimeissettozero,theintegrationtimecontinues untiltheuserexitsthemode.
Pressthe buttontostopthetest.
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Caution:Windblowingacrossthemicrophonecanaddextraneousnoise.Whenthereiswind
presenthigherthan10m/s,thewindscreenmustbeusedtopreventundesirablesignals.Keepthe
microphonedryandavoidseverevibrations.
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Note:setupofthemetercanalsobeperformedthroughthesoftware.
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