881L Imaging

DIGITAL MULTI-FREQUENCY IMAGING SONAR

Using Ethernet communications, this all-in-one, high performance digital imaging sonar can exceed 100 shots per second on the 1 m range at a 2 mm range resolution, producing near-photographic image quality.

The 881L is a multi-frequency system that can operate with customized configurations or revert to default settings to match appropriate operating range scales.

In addition to the benefits of low power, a simple set-up and installation procedure make this powerful sonar an ideal tool for remotely operated platforms ranging from large work ROV’s to small inspection vehicles, as well as AUV and UUV applications.

881L Imaging

Underwater Hardware Specifications

Frequency

310 kHz, 675 kHz, or 1 MHz (standard default settings)
-Other frequencies can be selected through programmable software configurations
(Tunable from 280 kHz to 1.1 MHz in 5 kHz steps)

Transducer

Imaging type, fluid compensated

Transducer Beam Width

310 kHz:  4° x 40°
675 kHz:  1.8° x 20°
1 MHz:  0.9° x 10°

Range Resolution

1 m - 4 m:  2 mm (0.08")
5 m & up:  10 mm (0.4")

Min. Detectable Range

150 mm (6")

Max. Operating Depth

1000 m and 3000 m available

Max. Cable Length

Standard:  100 m on CAT5e
Cable length may be increased up to ~9000 m using an Ethernet extender.  Please enquire for more information.

Interface

Standard:  10 Mbps Ethernet (10 BASE-T) using TCP/IP
Bit rate may vary if an Ethernet extender is in use.

Connector

Side mounted, eight conductor, wet mateable (Subconn MCBH8M-AS or MCBH8M-Ti)
Optional right angle or end mount connector

Power Supply

20 - 32 VDC at less than 5 Watts

Dimensions

(for both depth ratings)
79.4 mm (3.125") diameter x 182 mm (7.125") length

Weight in Air

1000 m unit:  1.5 kg (3.3 lbs)
3000 m unit:  2 kg (4.4 lbs)

Weight in Water

1000 m unit:  0.6 kg (1.3 lbs)
3000 m unit:  1.1 kg (2.4 lbs)

Materials

1000 m unit:  6061-T6 Aluminum & Polyurethane
3000 m unit:  Titanium & Polyurethane

Finish

Hard Anodize

Software Specifications

Win881L.exe

v1.04

Windows™ Operating System

Windows™ XP, Vista, 7, 8, 10

Modes

Sector, Polar and Side Scan

Range Scales

1 m, 2 m, 3 m, 4 m, 5 m, 10 m, 20 m, 30 m, 40 m,
50 m, 60 m, 80 m, 100 m, 150 m, 200 m

Train Angles

Continuous rotation, 3° increments

Sector Size

Sector Mode:  0° – 180°, 3° increments
Polar Mode:  0° – 357°, 3° increments, or Continuous rotation

Step Sizes

Slow (0.3°), Medium (0.6°), Fast (0.9°), Faster (1.2°), Fastest (2.4°)

Grid Types

Polar and rectangular

File Format

(filename).81L

Recommended Minimum Computer Requirements

100 MHz Pentium
16 MB RAM
1 GB Hard Disk
800 x 600 x 256 colour graphics

Ordering Information

1000 m Unit

881-000-500

3000 m unit

881-000-501

End mount connector

Option               -009

Right angle connector

Option               -010

IP Address*

Option               -020

*Note:   Standard IP Address is 192.168.0.5
            A different IP Address may be specified upon ordering.

881L Imaging

Features

  • Ethernet
  • Programmable
  • Multi-frequency
  • High performance
  • Lower cost
  • Low power
  • Simple set-up and installation
  • Digital telemetry
  • Full scale range from 1 m to 200 m
  • Compact size
  • Communication format available to user

Applications

  • ROV, AUV, & UUV
  • Offshore Oil & Gas
  • Sunken Timber Recovery
  • Diving Support
  • Surveying
  • Search & Recovery
  • Inspection
  • Underwater Archaeology
  • Scientific Research

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