User manual

4SL400enGB_V1.111/16
 Start
 USBInterface
 SPLHighdBRange(70~140)
 SPLmiddledBRange(50~110)
 SPLlowdBRange(30~90)
 dBlevel
 Testingmode
 SoundLevelMetermode
 NoiseDose%
 SoundLeveldBunit
 Aweighting
 CWeighting
 ZWeighting
Fastresponse
SlowResponse
 ImpulseWeighting
 OverRange
 UnderRange
 Solid:Autorecordstandby;Flashing:Recording
 Starttesttime(begin)
 Viewrecordeddata
 Stoptesttime
 SETmode
 Testduration