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Standards: IEC 61252; ANSI S1.25-1991; Class 1: IEC 61672-1:2013; ISO 11904-1
Acoustic Dosimeter Mode: Lav/Leq, SPL, Lmax, Lmin, SEL, SEL8, PSEL, LEPd, Dose (%), TWA, E, E_8h, Peak, Run Time, Upper Limit Time (ULT), L(C-A), Projected Dose (D_8h)
Sound Level Meter Mode: Leq, SPL, SEL, LEP,d, Lden, Ltm3, Ltm5, statistics – Ln (L1–L99), LMax, LMin, LPeak
Measurement Profiles: Simultaneous measurement in three profiles with independent set of filters and detectors
Weighting Filters: A, C and Z
RMS Detector: Digital true RMS detector with Peak detection, resolution 0.1 dB
Time Constants: Slow, Fast, Impulse
Microphone: ACO SV 7052E, prepolarised, 1/2” housing (one piece included)
Optional Microphone: SV 25S, special microphone with dedicated probe for Microphone-In-Real-Ear technique (optional)
Preamplifier: SV 15 with integrated cable
Measurement Range: 45 dBA RMS ÷ 141 dBA Peak (with ACO SV 7052E microphone)
Typical Noise Floor: less than 35 dBA (with SV 7052E microphone)
Frequency Range: 20 Hz ÷ 20 kHz, sampling rate 48 kHz (with ACO SV 7052E microphone)
Dynamic Range: 100 dB
Data Logger¹: Time-history logging of Leq / Lmax / Lmin / Peak / Lav results to internal memory with time step down to 100 ms to microSD card
Audio Recorder¹: Time-domain signal events recorder (optional)
Dual-channel Mode: Dual-channel measurement mode with second microphone ACO SV 7052E or SV 25S
1/1 Octave¹: Dual-channel 1/1 octave real-time analysis and spectra logging, 10 filters with centre frequencies from 31.5 Hz to 16 kHz, Type 1: IEC 61260 (optional)
1/3 Octave¹: Dual-channel 1/3 octave real-time analysis and spectra logging, 31 filters with centre frequencies from 20 Hz to 20 kHz, Type 1: IEC 61260 (optional)
Input: 2 × LEMO 2-pin, Direct
Display: Colour OLED 160 × 128 pixels
Memory: MicroSD card 32 GB (removable & upgradeable)
Interfaces: USB 1.1 Client
Extended I/O: AC output (1 V Peak) / Digital Output (Alarm trigger) / Digital Input (Input trigger)
Power Supply: Two AA batteries (alkaline); two rechargeable batteries (not included); USB interface
Operating Time: >16 h (3.0 V / 1.6 Ah); >20 h (2.4 V / 2.6 Ah)
USB Power: 150 mA HUB
Environmental Conditions: Temperature from -10 °C to 50 °C; Humidity up to 90 % RH, non-condensed
Dimensions: 95 × 83 × 33 mm (without microphones)
Weight: 260 g with batteries (without microphones)
