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Single beam echo sounder, to full ocean depths

EA640 is a high performance hydrographic wide band single beam echo sounder. The echo sounder is developed for hydrographic use in deep to medium depth waters.


  • The EA640 is a high precision hydrographic echo sounder
  • Up to eight simultaneous channels
  • Frequencies from 10 kHz to 500 kHz
  • Deep water frequencies 12 and 18 kHz
  • CW/FM pulse forms
  • Easy to install on Windows computers
  • Roll, pitch and heave compensation
  • True raw data logging
  • World class bottom detection


  • WBT high power: 2 channels, range from 10 to 50 kHz, power 2 kW
  • WBT standard: 4 channels, range from 10 to 500 kHz, power 500 W
  • The EA640 also supports the General Purpose Tranceiver (GPT)



The EA640 has been designed for the professional hydrography community. For maximum flexibility and ease of operation, the EA640 echo sounders uses a Microsoft Windows® operating system. The EA640 software can be run on any Windows compatible commercial computer.


Wide band frequency sweep (FM) in combination with advanced signal processing gives an exceptionally good signal to noise ratio and range resolution. With FM sweepingecho sounders range does not have to be sacrificed for resolution.


The EA640 offers internal storage of all raw sample data. This includes all external input sensor data for replay purposes. A highly flexible processing regime makes it possible to log high density complex raw data for advanced post-processing.


You can set up the display picture to suit your special needs. You can choose different windows on the screen for echogram, A-scope and digital depth. You can even control all the functions in the EA640 with just a click on the screen. These functions include comprehensive context sensitive on-line help. Save your favorite settings and call them back when you need them.


Up to eight high-power transceivers can operate simultaneously from the EA640. For improved performance, they are installed close to the transducers and linked to the combined display and processor with a single data cable. Available frequencies span from 10 to 500 kHz.


The EA640 will continuously be updated on a regular basis. New software releases will be available to download free of charge from the KONGSBERG web.

Services and support

  • 24/7 Technical support

    Our 24/7 technical support team is there to help at any time, day or night, wherever your vessel is.

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  • Spares

    We understand the importance of having the right parts, available in the right place, at the right time.

  • Training

    Ensure that your crew is properly and thoroughly trained. This will reduce operational risk, downtime and maximise return on asset investment.

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