DSL-1000 - Digital Sonar System

Digital receiver design based on leading-edge DSP technology, offerin superbly defined image resolution, wide-dynamic range sonar echogram previously unavailable with traditional analog circuitry designs.

State-of-the-art signal processing techniques include selectable gain-controllable range offsets, TVG control curves, receiver passbands, echo dynamic ranges, and overall gain attenuation setting (for prevention of receiver blocking by short/shallow range signals).

Selectable transmit power levels with automatic selection of pulse widths optimized for the range in use, with each pulse expandable in 2 steps for long range search applications where additional effective power to target is needed.

Operating modes include sonar mode (full circle/sector scanning with off-centering), side scanning (bottom scanning) and echo sounder modes, each mode shown across full screen area or split screens with simultaneous presentation of system parameter settings of time-wise compressed sounder mode echogram.

Eight search/depth ranges are user-definable in 10 unit steps from 10 to 2000 meters, fathoms, braccia, or in 20 unit steps for footage-calibrated range scales.

XGA video output available for uncompromised echogram resolution across an optional devoted 17 inch LCD marine monitor or a commercially available PC display accepting XGA format signal input.

Automatic soundome retraction initiated by the ship exceeding a preset speed limit with an external GPS speed data connected.
Built-in transducer stabilizer enabling the energy beam tilt angle to remain unaffected independent of the ship’s rolling or pitching under rough sea conditions.

Single touch keypress for storage and recall of 3 sets of user-defined settings for different types of fishing, different underwater conditions or for use by different operators.

Built-in target lock function steering the energy beam to stay locked onto a moving target of interest.

Audio output of sonar pings for remotely monitoring target detection via a commercially available speaker at a convenient location away from the sonar display, eliminating the need to constantly keep a watch on the sonar screen.

Supports a ubiquitous USB memory drive for storage of hard-earned operational settings you cannot afford to lose or software update when available from your dealer.

SPECIFICATIONS

• Frequency: 80 kHz (DSL-1000-80), 140 kHz (DSL-1000-140) or 180 kHz (DSL-1000-180)
• Operating modes: Sonar, Bottom (Side) Scanning, Echo Sounder
• Search/Depth Ranges: 8 user definable ranges to 2000m/fm/br in 10 unit steps
• Transmit power: Approx. 1.5 kW (max), adjustable in 4 steps
• Beam width (-6db): 19^o (H) x 15^o (V)/80 kHz | 12^o (H) x 12^o (V)/140 kHz | 10^o (H) x 10^o (V)/180 kHz
• Gain control offset: 10, 20, 30, 40, 50 dB
• TVG curves: 10Log R, 20Log R, 30Log R, 40Log R
• Receiver passbands: Selectable in 5 steps
• Recommended trunk: 146 mm (6”) inside diameter (user/shipyard-supplied)
• Hoist pipe length: 1681 mm (standard), 1981 or 3000 mm (option)
• Soundome Diameter/Travel: 142 mm/200 to 400 mm
• Hoisting Speed: Approx. 12 seconds for 400 mm travel at 24 VDC
• Scanning speed (360^o): 4.3 sec. /20m, 8 sec./100m, 12.8 sec./200m
• Scan sector widths: 5^o ~ 360^o in steps sector for 5^o/10^o/15^o/20^o step scan
• Beam tilt angle: +5^o to -90^o with max stabilizer control range of 25^o
• Interface ports: NMEA 0183, USB (FAT32), Audio (20W max. into 4 Ω)
• Power supply: 10.5 to 30V DC, floating ground
• Current drain (Standby): Hull unit 4.1A/1.6A (12/24V) | Control unit 6.2A/2.6A (12/24V)
• Weight (control/keyboard/hull): Approx. 3.5 kg/1.1 kg/38 kg (hoist, soundome, junction box included

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dsl_1000_180_925k.pdf