Extech Instruments SL400

9SL400‐en‐GB_V1.02/16
Calibration
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AutomaticModeCalibration
SetthemetertoSLMmode,Aweighting,Highrange,andSlow.
Attacha94.0dB(1000Hz)soundcalibratortothemicrophone.
EnterSETmodeandgototheparameter94ADJ.
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PresstheRun
keytostarttheautomaticoffsetroutineandwaitfortheflashingdBnumber
toappear.
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PresstheEnter keytosavetheentryandtogetbacktothemeasurewindow.
Themetershouldnowread94.0dB(+/‐0.1dB).
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Ifthemeasuredvaluedoesnotequal94.0(+/‐0.1dB),runthe94ADJroutineagain.
PresstheEnter
keytosavetheentryandtogetbacktothemeasurewindow.
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