881A Profiling

DIGITAL MULTI-FREQUENCY PROFILING SONAR 

Now with Multi-frequency Sonar, operators can fine-tune their profiling range resolution.  The Model 881A Profiling Sonar Head is a programmable multi-frequency digital scanning sonar that you can operate using default settings or customize the configurations for your own situation.  High performance, lower cost, low power and simple set-up and installation, make this sonar perfect for all profiling applications.

881A Profiling

Underwater Hardware Specifications

Frequency

675 kHz
-Other frequencies can be selected through programmable software configurations
(Tunable from 600 kHz to 1 MHz in 5 kHz steps)

Transducer

Profiling type, fluid compensated 

Transducer Beam Width

600 kHz:  2.4° 
675 kHz:  2.1° 
1 MHz:  1.4° 

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

1000 m on typical twisted shielded pair (RS-485) 

Interface

RS-485 serial interface @ 115.2 kbps (or optional RS-232) 

Connector

Side mounted, four conductor, wet mateable (Subconn MCBH4M-AS) 
Optional right angle or end mount connector 

Power Supply

20 – 36 VDC at less than 5 Watts 

Dimensions

(for both depth ratings)
79.4 mm (3.125”) diameter x 234mm (9.2”) length 

Weight in Air

1000 m unit:  1.8 kg (4 lbs) 
3000 m unit:  2.2 kg (4.8 lbs)

Weight in Water

1000 m unit:  0.6 kg (1.3 lbs)
3000 m unit:  1 kg (2.2 lbs) 

Materials

1000 m unit:  6061-T6 Aluminum & Polyurethane
3000 m unit:  Titanium, Polyurethane & 300 series stainless steel 

Finish

Hard Anodize  

Software Specifications

Win881A.exe

v3.01

Windows™ Operating System

Windows™ XP, Vista, 7, 8, 10

Modes

Side Scan, Polar, and Sector

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

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).81a

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

881-000-420

3000 m Unit

881-000-421

RS-232

Option               -006

End mount connector

Option              -009

Right angle connector

Option               -010

Interface source code in "C" (TEST881A.C)

Option               -018

881A Profiling

Features

  • Programmable
  • Multi-frequency
  • High performance
  • Lower cost
  • Low power
  • Simple set-up and installation
  • Digital telemetry
  • 1 to 100 m operation (full scale)
  • Compact size
  • Communication format available to user

Applications

  • Profiling
  • ROV, AUV & UUV
  • Offshore Oil & Gas
  • Surveying
  • Dam Face Inspection
  • Pipeline Inspection
  • Underwater Archaeology
  • Scientific Research 

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