The Addtool digital sound level meter is designed for automotive noise diagnostics, suitable for factories, offices, traffic roads, homes and other environments. It measures sound pressure levels with high accuracy and provides both A‑ and C‑weighting options.
The manual covers device features, LCD panel functions, calibration steps, power options, and detailed specifications. Follow the described procedures to ensure reliable measurements and maintain the instrument's performance. This manual is written in Chinese.
| Time weighting | FAST and SLOW |
|---|---|
| AC analog output | 0.70 V rms per dB |
| Display resolution | 0.1 dB |
| Sampling rate | 2 samples per second |
| Power supply | 1.5 V from 4 AA batteries or DC 6 V 100 mA |
| Battery life | ≈30 hours |
The recommended calibration interval is one year.
Use the frequency weighting (A/C) selector switch on the device.
Turn the FAST/SLOW selector switch to choose the desired time weighting.