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Underwater Acoustic Modems

NEW M-Series Underwater Acoustic Modems

Available in late Q2 2014:

The new S2C M-series offers the full benefits of the company's patented S2C (Sweep-Spread Carrier) communication technology in a light and compact design.

The new S2C M-series is fully compatible with EvoLogics standard S2C R and S2C R USBL series, and includes a selection of directional and nondirectional short- and mid-range devices that fit various application scenarios, especially those where size and weight are critical factors. The new series relies on the EvoLogics S2C broadband communication technology to overcome the challenges of dynamic underwater environment and deliver a great performance in various subsea conditions. S2C M-series modems are smaller and lighter than the standard EvoLogics R-series devices, but deliver an uncompromised performance of the full-sized product line.

M Series

Device Application
S2C M 48/78 High-speed device for short-range applications in shallow waters
S2C M 42/65 High-speed device for short- and medium-range applications, wide-angle beam pattern for communication in vertical, slant and horizontal channels
S2C M 18/34 All-round performer for medium-range applications

Configuration Options

  • Housing: Delrin (high-grade plastic) or stainless steel
  • Interface: RS-232 or Ethernet
  • Wake Up Module to save battery power: "wake up" the device only when needed.1
  • External power supply (24V or 12 V)
  • OEM versions available for easy integration

Unique applications might require additional customization.
EvoLogics experts are always ready to address any special requests.



1The Wake Up Module monitors both the RS-232 host interface and the acoustic channel and turns the device on when incoming signals are detected.
To reduce overall power consumption, the acoustic channel is monitored in an on/off toggle cycle of active and idle intervals.

R-Series Underwater Acoustic Modems

S2C R series of underwater acoustic modems provide full-duplex digital communication using the EvoLogics patented S2C (Sweep-Spread Carrier) Technology, delivering an excellent performance, resistant to the challenges of a dynamic subsea environment. Self-adaptive algorithms adjust the S2C parameters to maintain the highest bit rate possible in current conditions.

The S2C R series offers a selection of short- mid- and long-range devices for shallow or deep water applications. Each product is available in a variety of configurations to offer the best-fit solution for a particular scenario.

Every S2C R Underwater Acoustic Modem was designed as a reliable tool to solve multiple communication tasks. It implements advanced data delivery algorithms, supports addressing and networking and is easy to control with a comprehensive set of commands and software-configurable settings.

R Series

R- Series Underwater Acoustic Modems

Device Application
S2C R 48/78 High-speed device for short-range applications in shallow waters
S2C R 40/80 High-speed device for medium-range applications in shallow waters, 70-degrees conical beam pattern optimal for vertical or slant channels
S2C R 42/65 High-speed device for short- and medium-range applications, wide-angle beam pattern for communication in vertical, slant and horizontal channels
S2C R 18/34 All-round performer for medium-range applications
S2C R 12/24 Depth-rated device for medium- and long-range applications, low power consumption - best for long-term deployment, 70-degrees conical beam pattern optimal for vertical or slant channels
S2C R 7/17 Depth-rated device for long-range applications, hemispherical beam pattern, low power consumption - best for long-term deployment
S2C OEM Modems EvoLogics underwater acoustic modems are available in OEM configuration for integration with other systems
S2C mounting frames EvoLogics S2C mounting frames are intended for proper mounting of S2C devices and offer additional protection against mechanical damage for the fragile components of S2C devices

Configuration Options

  • Housing: Delrin (high-grade plastic), aluminium-magnesium alloy, stainless steel or titanium
  • Interface: RS-232 (RS-485, RS-485 optional) and/or Ethernet
  • Wake Up Module to save battery power: "wake up" the device only when needed.1
  • External power supply or an internal rechargeable battery pack
  • OEM versions available for easy integration

Unique applications might require additional customization.
EvoLogics experts are always ready to address any special requests.



1The Wake Up Module monitors both the RS-232 host interface and the acoustic channel and turns the device on when incoming signals are detected.
To reduce overall power consumption, the acoustic channel is monitored in an on/off toggle cycle of active and idle intervals.

Further information

Find more information in the Underwater Acoustic Modems Product Information Guide or contact us directly at sales@evologics.de