... with many functions I. Summary HS6288E Multi-functional Sound Level Analyzer is a portable and intelligent instrument integrated with many ... Virtual Value, Peak Value Factor 37 Level Range: High, Middle, Low, linearity range of each level ≥60dB8 Meterage Timing Set: 10s, ... output interface: AC output, DC output, RS-232C interface.13 extendable cable: 5 meters, 10 meters, 15 meters, 20 meters according ...