... F, S, I, Peak C+, Peak C-12A/D Bits24 bits13Level Linearity Range>90 dB14Sampling Frequency48 kHz15Display240×160 ... graphic LCD, with EL back-lit16Display Refresh1 Hz for value; 10 Hz for graph17Main ... , Ldn22Real-time spectrum analysisFulfils standards: IEC 61260 Class 1Filter type: Digital band-pass filterMeasuring Parameters: Lfmi, Lfmeq,1s, Lfmeq ...