2. APPLICATIONS
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ROV & AUV integration
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Weak & small target detection
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Navigation & collision avoidance
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Harbour security
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Pipeline inspection
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Complex structure survey
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Ocean scientific research
3. KEY FEATURES
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Dual-frequency switchable (850 kHz / 1 150 kHz) for long & short ranges
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Built-in image enhancement
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Compact design for small platforms
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Real-time refresh up to 40 Hz
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Easy-to-use SeaView dedicated software
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Standard communication protocol
4. TECHNICAL SPECIFICATIONS
4.1 Acoustic Performance
| Parameter | VST-800D |
| Center frequency | 850 kHz / 1 150 kHz |
| Max range | 120 m @ 850 kHz / 40 m @ 1 150 kHz |
| Min range | 0.1 m |
| Range resolution | 3 mm |
| Horizontal FOV | 130° @ 850 kHz / 100° @ 1 150 kHz |
| Vertical FOV | 20° |
| Beam resolution | 0.25° @ 850 kHz (beam width 1°) |
| 0.2° @ 1 150 kHz (beam width 0.6°) |
| Number of beams | 512 |
| Data update rate | Max 40 Hz |
| Depth rating | 300 m standard / 500 m optional (deeper on request) |
4.2 Functional Specifications
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Frequency selection: on-line switchable low / high
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Sound-speed input: manual, seawater, fresh water
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Data format: water-column data, video, snapshot
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Synchronization: network external trigger
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Software tools: ruler, palette, capture, record, flip-L/R, flip-U/D, config, FW update
4.3 Electrical Interface
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Input voltage: 24 – 36 V DC
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Power consumption: ≤ 45 W
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Communication: 100 M Ethernet
4.4 Mechanical Data
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Weight: ≤ 1.3 kg in air / ≈ 400 g in water
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Dimensions: ≤ 125 mm W × 118 mm D × 80 mm H
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Depth rating: 300 m standard (deeper on request)
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Hull material: aluminium alloy (titanium optional)
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Mounting: bottom 4×M4 + rear 2×M4 bolts
5. FIELD EXAMPLES
Figure 1: Pier pontoon & berthed vessel hull
Figure 2: High-definition image of small-boat bottom
6. PACKAGING & SHIPPING
6.1 Surface & Corrosion Protection
Aluminium version: hard-anodised + multi-layer coating, seawater-resistant; if damaged, corrosion risk—return to factory for re-coating or replacement. Titanium version suitable for long-term seawater exposure. Sacrificial anode included—replace periodically.
6.2 Packaging & Labelling
Custom shock-/water-/drop-proof case; model & label printed on both housing and case.
6.3 Transport
Suitable for ordinary rail, road and air freight.
7. STANDARD SUPPLY LIST
| Item | Description | Qty | Remarks |
| 1 | Sonar head VST-800D | 1 pc |
|
| 2 | Waterproof test cable | 1 pc | 8 m |
| 3 | Integration cable | 1 pc | 2 m (length custom) |
| 4 | Power adapter | 1 set |
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| 5 | Mounting spares | 1 set |
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| 6 | User manual | 1 copy | electronic |
| 7 | Certificate | 1 copy |
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| 8 | Transport case | 1 set |
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