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The Koden CVS-875D is a compact digital echo sounder / fish finder designed for small to medium fishing vessels and coastal navigation. It is known for its reliability, simple operation, and clear underwater imaging, making it suitable for everyday marine use.
The CVS-875D works by:
| Parameter | Specification |
|---|---|
| System Type | Broadband digital echo sounder / fish finder |
| Display Type | Color LCD (XGA, sunlight readable) |
| Display Size | 15 inch |
| Display Resolution | ~1024 × 768 (XGA) |
| Frequency Type | Broadband, multi-frequency (quad frequency) |
| Frequency Range | ~24 kHz – 240 kHz (transducer dependent) |
| Frequency Selection | Up to 4 selectable frequencies (0.1 kHz step) |
| Output Power | 1 kW – 3 kW (RMS) |
| Depth Range | 1 m – 3000 m |
| Minimum Depth | ~1 m |
| Operation Mode | Automatic / Manual |
| Signal Processing | Digital processing with Koden Digital Filtering (KDF™) ) |
| Noise Reduction | Advanced digital filtering |
| Bottom Tracking | Automatic seabed detection |
| Bottom Hardness Display | Yes (% indication) |
| Fish Detection | Yes (high-resolution fish target discrimination) |
| Display Modes | Single / dual / quad frequency, split screen |
| Image Storage | Up to 500 images |
| Condition Memory | 6 user presets (CM keys) |
| Zoom Function | Yes |
| Alarm Functions | Bottom, fish, power, temp, speed alarms |
| Special Functions | Sona-Tone™, event memory, simple plotter |
| Interfaces | NMEA compatible |
| External Connectivity | External monitor + CCD camera input |
| Data Storage | USB / SD card backup |
| Power Supply | 21.6 – 31.2 V DC |
| Power Consumption | ≤ 70 W |
| Waterproof Rating | IPX5 |
| Dimensions (Display Unit) | 375 × 381 × 265 mm |
| Weight | ~13 kg (display unit) |
| Transducer Type | Broadband hull-mounted (multiple types supported) |
| Application | Commercial fishing vessels, deep-sea operations |
| Compliance | Marine standards (non-IMO primary navigation) |
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