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Single beam echo sounder for full ocean depths

EA640 is a high performance hydrographic wideband single beam echo sounder. The EA640 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


The EA640 will continuously be updated on a regular basis. New software releases are available for free download.

  • Current release: 22.6
  • The last software version operating on Windows 7 was 19.1.4.

If you would like to be informed when a software update is available, please click here to sign up to the mailing list.


  • 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 sounder uses a Microsoft Windows® operating system. The EA640 software can be run on any Windows compatible commercial computer.


Wideband frequency sweep (FM) in combination with advanced signal processing gives an exceptionally good signal to noise ratio and range resolution. With FM sweep the echo sounder range does not have to be sacrificed for resolution.


The EA640 offers an 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 whenever 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.

Anti-fouling paints

We have a list with our approved anti-fouling paints for all types of echo sounder transducers.

Tjenester og 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.

  • Conversions, retrofit and refit

    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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