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| Brand | Avisoft |
|---|---|
| Origin | Germany |
| Model | CM16/CMPA |
| Instrument Type | Ultrasonic Noise Recorder |
| Frequency Range | 2 kHz to 200 kHz |
| Self-Noise | 18 dB SPL |
| Sensitivity | 500 mV/Pa |
| Connector | XLR-5 Male |
| Dimensions | 36 × 36 × 60 mm |
| Weight | 65 g |
| Power Supply | External Polarization via UltraSoundGate Interface |
| Optional Field Accessory | USB Power Adapter |
| Brand | ABYSSens |
|---|---|
| Origin | France |
| Model | SENS |
| Instrument Type | Autonomous Hydrophone Recorder |
| Frequency Range | 2 Hz to 30 kHz (optional up to 250 kHz) |
| Sampling Rate | 400 kS/s |
| Operating Depth | 300 m (pressure-rated) |
| Dynamic Range | 24-bit |
| Sensitivity | −185 dB re 1 µPa |
| Data Format | WAV |
| Memory Capacity | Up to 4 TB |
| Battery Life | 17 days continuous (optional 70 days) |
| Housing Diameter | 90 mm |
| Length | 277 mm |
| Air Weight | 1.9 kg |
| Waterproof Enclosure | Yes |
| High-Pass Filtering | Supported |
| Communication Interface | Wi-Fi |
| Measurement Duration | Up to 30 days |
| Nominal Self-Noise | Not specified (typical for calibrated hydrophones < 20 µPa RMS in quiet conditions) |
| Compliance | Designed for ISO 18405:2017 (Underwater Acoustics — Terminology), IEC 60651/60804 (Sound Level Meters), and ASTM E1869–21 (Standard Guide for Underwater Acoustic Monitoring) |
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