878 Sidescan Sonar
The Imagenex Model 878 Sidescan Sonar is the next generation in high resolution sidescan sonar. The unit runs two simultaneous sonars on each side at different sound wavelengths, providing enhanced image clarity. To further enhance these unique sonar capabilities, the towfish is equipped with an optional echo sounder and a built-in orientation module as well as depth and temperature sensors.
The Model 878 system comes as a completely integrated package including towfish, cable, GPS enabled surface interface box, and Microsoft Windows™ based real time operation and data playback software, thus providing a complete, easy to use, but highly advanced acoustic bottom visualization system.
Underwater Hardware Specifications
Sidescan
Frequencies: 260 kHz / 540 kHz (Single frequency available)
Transducers: Two transducers per side, with adjustable depression angle from -10° to -30° in 5° steps
(One transducer per side for single frequency)
Transducer Beam Width: 260 kHz: 1° x 60°
540 kHz: 0.5° x 60°
Range Resolution: Range scale ÷ 1000
Echo Sounder
(optional)
Frequency: 200 kHz
Transducer: Conical
Transducer Beam Width: 10°
Range Resolution: Range scale ÷ 1000
Orientation Module (accuracies)
(optional)
Pitch & Roll: ± 0.1° typical
Heading: ± 1.0° typical
Depth: ± 0.5% of FS typical
Temperature: ± 0.5°C typical
Max. Operating Depth
1000 m (~3280')
Max. Cable Length
1000 m using built-in Ethernet extender
Interface
Up to 2.3 Mbps Ethernet (10 BASE-T) using TCP/IP
Connector
Wet mateable (Subconn MCIL4M)
Power Supply
130 VDC at less than 15 Watts, supplied from Surface Interface Box
Dimensions
See Drawing
Weight in Air
~26 kg (~57 lbs)
Weight in Water
~12 kg (~25 lbs)
Materials
6061-T6 Aluminum, PVC, 300 Series Stainless Steel, Polyurethane, Polycarbonate & Epoxy
Finish
Hard anodized (internals) & polyester powder
Software Specifications
SS878.exe
v1.0.0.2
Windows™ Operating System
Windows™ XP, Vista, 7, 8, 10
Zoom Modes
1x, 2x, and 4x dynamically moveable
Range Scales
SIDESCAN:
260 kHz: 10 m, 20 m, 30 m, 40 m, 50 m, 60 m, 80 m, 100 m, 120 m, 150 m, 200 m, 250 m, 300 m
540 kHz: 10 m, 20 m, 30 m, 40 m, 50 m, 60 m, 80 m, 100 m, 120 m
ECHO SOUNDER:
10 m, 20 m, 30 m, 40 m, 50 m, 60 m, 80 m, 100 m, 120 m, 150 m, 200 m, 250 m, 300 m
File Format
(filename).878
GPS Input (4800, N, 8, 1)
NMEA 0183 FORMATS: GLL and VTG; GGA and VTG; RMC
Recommended Minimum Computer Requirements
Intel Core i3 @ 2.00 GHz
4 GB RAM
100 GB Hard Disk
1920 x 1080, True colour graphics
Ordering Information
Dual Frequency Unit (260 kHz / 540 kHz)
878-000-250
Single Frequency Unit (260 kHz)
878-000-350
Surface Interface Box
878-000-001
60 m (200') Sidescan tow cable
Option -021
100 m (330') Sidescan tow cable
Option -033
540 kHz*
Option -045
*Note: 540 kHz Option is for Single Frequency Unit only
Echo Sounder
Option -046
Orientation Module
Option -047
