DESCRIPTION

The EdgeTech 4200 Series is a dual simultaneous frequency side scan system that utilizes EdgeTech’s Full Spectrum CHIRP technology to provide very high resolution imagery. The 4200 Series comes available in two different configurations; the 4200-SP and 4200-MP.  Selection between the two models depends upon the application type as well as frequency and tow speed requirements.

The 4200-SP operates dual simultaneous 100/400 kHz frequencies and the 4200-MP is available with either 100/400 kHz or 300/600 kHz dual simultaneous frequencies. Additionally the 4200-MP is a dual mode system that offers two software selectable modes of operation:

• High Definition Mode (HDM) – conventional dual simultaneous frequency operation with extra long array for superior resolution; excellent tool for Mine Countermeasures (MCM).

• High Speed Mode (HSM) – utilizes EdgeTech's Multi-Pulse technology which allows the system to be towed at speeds of up to 10 knots while meeting NOAA and IHO-44 requirements for minimum 3 pings on a 1 meter target compared to conventional systems at 4 knots. This is an additional feature for high-speed navy patrol vessels.

The array configuration for the 4200-MP's 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 Series 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 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 Series is also designed to allow efficient integration of other optional sensors (see specifications below).   The EdgeTech telemetry link allows the sonar signals that are digitized in the towfish to be transmitted over long coaxial cable lengths with no loss of signal quality.

The 4200 Series offers two towfish options based upon the user’s desired applications; a stainless steel or lightweight aluminum version. The stainless steel towfish is heavier and ideal for deeper water operation of up to 2000 meters and the lightweight aluminum towfish for shallower water operation of depths up to 300 meters.

Along with the choice of towfish, the 4200 Series also offers three different topside processor options which again allows the user to customize the system to best suit his needs. All of the topside processors come installed with EdgeTech’s DISCOVER software, which serves as the control and data acquisition sub-system for display, storage and printing of sonar data. You also have the option of configuring the system for third-party interface and or utilizing your own PC / laptop.

The EdgeTech Model 4200 Topside Processor is a standard 19” rack mountable topside that is ideal to use on larger vessels or when portability is not a main concern. In this configuration, all of the electronics are housed within a 19” rack mounted Windows© based PC System and the data is displayed on a high resolution flat screen color monitor.

The EdgeTech Model 4200-P Topside Processor is a portable unit that is ideal for smaller ships or when operating outside of a protected area. All of the electronics are mounted within a waterproof “suitcase-style” housing and the data is displayed on a laptop computer via a wired or wireless Ethernet connection.

For customers who would prefer to use their own 3rd party topside processor, EdgeTech offers the 701-DL (Digital Link) which acts as the interface between the 4200 Series towfish and the display and acquisition software. With this option the user supplies the PC and runs the 4200 System using EdgeTech’s DISCOVER software.

The 4200 Series 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, Magnetometer interface and Acoustic responder for accurate towing positioning at a price which is commercially sensitive.