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Imagenex Equipment

881A Multi-Frequency Imaging Sonar

Model 881A Imaging, 881A Imaging Narrow Beam, 881A 6000 m Imaging

Programmable multi-frequency digital imaging sonar (280 kHz–1.1 MHz) with serial interface for ROVs, AUVs and UUVs.

Description

The Model 881A is a programmable multi-frequency digital imaging sonar that runs on default frequencies of 310 kHz, 675 kHz or 1 MHz, or on custom configurations tunable from 280 kHz to 1.1 MHz in 5 kHz steps. It combines high performance with low power and simple installation, for the largest work ROVs down to the smallest inspection ROVs, as well as AUV and UUV applications. Variants include a narrow-beam model and a 6000 m unit.

Key features

  • Range resolution 2 mm at 1-4 m, 10 mm from 5 m
  • RS-485 serial at 115.2 kbps (optional RS-232)
  • 20-36 VDC at less than 5 W
  • 79.4 mm diameter x 182 mm length
  • 1000 m and 3000 m depth ratings

Applications

Mechanical scanning imaging on ROVs, AUVs and UUVs. Specifications listed are for the 881A Imaging.

Specifications

Frequency310 kHz, 675 kHz, or 1 MHz (default); tunable from 280 kHz to 1.1 MHz in 5 kHz steps
Beam width310 kHz: 4° x 40°; 675 kHz: 1.8° x 20°; 1 MHz: 0.9° x 10°
Range resolution1 m - 4 m: 2 mm (0.08"); 5 m & up: 10 mm (0.4")
Depth rating1000 m and 3000 m available
InterfaceRS-485 serial interface @ 115.2 kbps (or optional RS-232)
Power20 - 36 VDC at less than 5 Watts
Dimensions79.4 mm (3.125") diameter x 182 mm (7.125") length

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