Applications
Geological/Geophysical Surveys
Geo-hazard Surveys
Pipeline Surveys
Site Surveys
Mine Location & MCM Applications
Obstruction Surveys
Underwater Archaeology
Dredge Surveys
Cable Location
Route Surveys
Fisheries Applications
Bridge Footing Scour Assessment
Hazardous Waste Site Surveys
Shipwreck & Airplane Location
Search and Recovery

Features
Magnetometer Tow Interface Option
Selectable dual mode of operation: High Definition Mode (HDM) or High Speed Mode (HSM)
HDM- Conventional simultaneous dual frequency operation
HSM- Multi pulse mode on either selected frequency
Extra long array (90 cm) for superior resolution (HDM)
Multi pulse mode (HSM)
100/400 kHz or 300/600 kHz dual frequency
1000+ m depth rating
Single coax tow cable over 6000 m
Integrated with other sensors
Full Spectrum chirp processing
AUV/ROV adaptable

Description
The New Edgetech 4200-FS Side Scan System combines Edgetech's Full Specturm and MultiPulse technologies into one unit providing a unique advantage over conventional dual frequency 100/500 kHz side scan systems. It has two software modes of operation: High Definition Mode and High Speed Mode.

· High Definition Mode (HDM) - conventional mode operation with extra long array (90 cm) for superior resolution; excellent tool for Mine Countermeasures ( MCM's ).

· High Speed Mode (HSM) - dual pulse operation for speeds up to 10 knots, while meeting NOAA and IHO requirements for "hits on target" compared to conventional systems at 4 knots.

The 90 cm array configuration for these two modes of operation is dynamically reconfigured by the system to suit the user's immediate application. Real time selection of the 2 modes allows the user to choose the mode best suited to his task at hand. The 4200-FS uses EdgeTech's Full-Spectrum chirp technology to deliver wide band, high energy transmit pulses, coupled with high-resolution and superb signal to noise ratio (SNR) echo data. The system employs wide band, low noise front end electronics which reduce system induced phase errors and drift to negligible levels. The sonar data is also available as a complex, fully coherent data set suitable for advanced user applied post processing. The 4200-FS Side Scan System offers simultaneous dual frequency operation in high definition mode and is designed to allow efficient integration of other optional sensors. The Edgetech telemetry link allows the sonar signals that are digitized in the tow fish to be transmitted over the long coaxial cable (6000m) with no loss of signal quality. The 4200-FS sets new standards in the industry for seafloor mapping by integrating key performance and safety features, the dual mode feature along with EdgeTech's Secondary Recovery System, Standard Heading, Pitch & Roll, optional Depth and acoustic responder for accurate towing positioning.