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Standards: Class 1: IEC 61672-1:2013; Class 1: IEC 61260-1:2014
Weighting Filters: A, B, C, Z, LF
Time Constants: Slow, Fast, Impulse
RMS Detector: Digital True RMS detector with Peak detection; resolution 0.01 dB
Microphone: Patented MEMS-based microphone ST 30B in 1/2” housing
Preamplifier: Integrated
Linear Operating Range: 30 dBA RMS ÷ 133 dBA Peak (according to IEC 61672)
Dynamic Measurement Range: 23 dBA RMS ÷ 133 dBA Peak (typical from noise floor to maximum level)
Internal Noise Level: Less than 23 dBA RMS
Frequency Range: 20 Hz ÷ 20 kHz
Meter Mode Results: Elapsed time; Lxy; Lxeq (LEQ); Lxpeak (PEAK); Lxymax (MAX); Lxymin (MIN); LxyE (SEL);
2 × LR (Rolling LEQ); 10 × LN (LEQ statistics); Lden; LEPd; Ltm3; Ltm5
Measurement Profiles: Simultaneous measurement in three profiles with independent sets of filters (x) and detectors (y)
Statistics: Ln (L1–L99); complete histogram in meter mode
Data Logger: Summary results (SR) and spectral data with interval down to 1 s; time history (TH) of selected parameters with interval down to 100 ms
1/1 Octave Analysis (option): Real-time Class 1 analysis per IEC 61260; centre frequencies from 31.5 Hz to 16 kHz
1/3 Octave Analysis (option): Real-time Class 1 analysis per IEC 61260; centre frequencies from 20 Hz to 20 kHz
Audio Recording (option): Time-domain recording to WAV format with selectable bandwidth and recording period
Remote System Check: Real-time system check; built-in sound source 100 dB at 1 kHz
Memory: 8 GB (non-removable)
Display and Keyboard: OLED colour display 96 × 96 px; 4 push-button keyboard
Communication Interfaces: USB; UART
Power Supply: Li-Ion rechargeable battery
Operation Time on Battery: Up to 8 h
External DC Source: USB-C; 5 V, 1 A (non-removable)
Environmental Conditions – Temperature: −20 °C to 60 °C
Environmental Conditions – Humidity: Up to 99 % RH, non-condensed
Dimensions: 600 mm length; 66 mm diameter excluding windscreen (windscreen diameter 130 mm)
Weight: Approx. 1.2 kg
