Extech Instruments 407780A User Manual

407780A‐EU‐ENv1.34/14
5
DisplayDescription

1. Soundlevelrangeindicator(5ranges):30–90dB,40–100dB,50–110dB,60–120dB and70–
130dB
2. Bargraphrepresentsthecurrentsoundlevel(1dBresolution).
3. Date/timeandelapsedtimeindicator:year‐month‐dayorhour:minute:second.
Duringintegratingthisindicatordisplaystheelapsedtimeinseconds.
Whenviewing
thePeakHoldvaluethisindicatordisplaysPH.
WhenviewingthepercentilevaluesthisindicatordisplaysL:05,L:10,L:50,L:90orL:95.
4. Leq:Equivalentcontinuoussoundlevelreading
5. SEL:Soundexposurelevelreading
6. SPL:Time‐weightedsoundlevelreadingSoundPressureLevel
7. Low‐batteryindication
8.
MAX:WhendisplayedflashingitindicatesthattheMaximumtime‐weightedsoundlevel
readingisshown.Whenitisdisplayed soliditindicatesthattheMaximumsoundlevel
readingisdisplayed.
9. MIN:Minimumsoundlevelreading.
10. REC:IndicatesthatDatarecordingisinprocess
11. Soundlevel
reading(0.1dBresolution):30.0–130.0dB
12. FULL:Indicatesthattherecordingmemorybankhasbeenfilled
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Extech Instruments 407780A Specifications

General

Brand	Extech Instruments
Model	407780A
Category	Measuring Instruments
Language	English