Extech Instruments SL400

13SL400‐en‐GB_V1.02/16
NoiseDoseMeasurementProcedures

Pressthe buttontoturnonthemeter.TheLCDwilldisplaytheSPL(soundpressurelevel
icon).IfSLMisshowinginthelowerline,PressSETandpressthedownarrow tochangeSLM
toNDM.PresstheEnterbutton
toexitsetup.Pressthe buttontoenablenoisedose
testing.Pressthe
buttonagaintopausetesting.Press tostoptesting.
Pressthe buttontoscrolltheavailabletestoptions:SPL,Dose%,LPMAX,LPMIN,PKMAX,LEQ,
SEL,LEP8,TWA8,LVAG,LN5%,LN10%,LN50%,LN90%,andLN95%.
Pressthe
buttontoviewthestarttesttimeanddate.Pressthe buttontochangetheview
fromtimetodateandbacktothetimedisplay.ThetimeformatisHH:MM:SSandthedateformat
isYY‐MM‐DD.

ViewLoggedSoundLevelReadings

ForSoundlevelreadings,SLMmustappearonthelowerline.Pressandholdthe
buttonfor
morethan1sectoentertheviewingmode.Pressthe or button toscrollthroughthe
readings.
Pressthe buttontoselectthedoserecordinformation(NoiseDoseMetermode):Testmode,
StartTime,Testduration,Totalpausetime,Testendtime.
Pressthe buttontoviewtheteststartdate,Pressthe buttontoviewtheteststarttime.The
timeformatisHH:MM:SSandthedateformatisYY‐MM‐DD.
Pressandholdthe
buttonformorethan1secagaintoexittheloggeddataviewingmode.
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