The AWA5688 is a multifunction sound level meter with digital signal processing, GPS, Bluetooth and extensive measurement options.
The AWA5688 multifunction sound level meter, produced by Aihua Instruments, provides statistical analysis, octave‑band, FFT and personal exposure measurements. It complies with IEC 61672 Class 2 and Chinese standards for environmental and occupational noise monitoring.
The manual covers hardware features, interface settings, measurement procedures, calibration methods, data retrieval, and optional accessories such as GPS, Bluetooth, and external printers. Safety notices, battery handling, and power‑switching details are also included. This manual is written in Chinese.
| Linear measurement range | 28 dBA–133 dBA (A), 33 dBC–133 dBC (C), 40 dBZ–133 dBZ (Z) |
|---|---|
| Frequency range | 20 Hz–12.5 kHz |
| A/D resolution | 24 bit |
| Sampling rate | 48 kHz |
| Self‑noise (A‑weight) | < 3 µV |
| Display | 2.6‑inch color LCD, 240 × 320 pixels |
| Power supply | 4 × LR6 alkaline batteries or 4.5 V–6 V external source |
| Dimensions (mm) | 240 × 80 × 30 |
| Battery runtime (statistical analysis) | > 40 hours |
It can run for more than 40 hours of continuous statistical analysis on four LR6 alkaline batteries.
The linear range is 28 dBA–133 dBA (A‑weight), 33 dBC–133 dBC (C‑weight) and 40 dBZ–133 dBZ (Z‑weight).
The device samples at 48 kHz.
It can be powered by four LR6 alkaline batteries or an external 4.5 V–6 V power source.