... frequency channel analyzer / analysis meter1. integration, noise statistics, noise acquisition, noise frequency analysis2. built-in 1/1 frequency spectrum filter, RS ... characteristicsLMS true effective valueCrest factor3Time weighting Fast(F), Slow(S), Max value hold functionMeasuring time settingMan,10s,1min,5min, ... 178mm×81mm×31mmWeight 0.4kg , printer: 0.41kg handheld noise spectrum analyzer