881A Echo Sounder
Model 881A
Digital Echo Sounder
The Imagenex Model 881A Echo Sounder is a completely self-contained echo sounder with a serial output. It is mounted in a pressure-proof housing with an underwater connector for use in depths up to 3000 meters (10000 feet). It can be used as a standard echo sounder or with digitized first returns only. Its requirements are minimal, needing only a power source and a digital interface to an external device such as a personal or laptop computer.
Underwater Hardware Specifications
Frequency
675 kHz
Transducer
Conical
Transducer Beam Width
10° (Standard)
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 3 Watts
Dimensions
(for both depth ratings)
79.4 mm (3.125") diameter x 139 mm (5.5") length
Weight in Air
1000 m unit: 1.1 kg (2.3 lbs)
3000 m unit: TBA
Weight in Water
1000 m unit: TBA
3000 m unit: TBA
Materials
1000 m unit: 6061-T6 Aluminum & PVC
3000 m unit: Titanium, PVC & 300 series stainless steel
Finish
Hard Anodize
Software Specifications
Win881AE.exe
v3.01
Windows™ Operating System
Windows™ XP, Vista, 7, 8, 10
Modes
Echosounder
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
File Format
(filename).81g
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
881-000-141
3000 m unit
881-000-142
RS-232
Option -006
End mount connector
Option -009
Right angle connector
Option -010
