USBL: Benthos DAT
  • All-in-one; Range, Bearing, and Data Communication.
  • Acoustic modem and USBL functionality in one package.
  • Compact form factor.
  • Low power consumption.
  • Mulitple frequency options (LF, MF, and Band C).
  • Available either in a pressure housing or as customer combinable electronics with matching transducer.
Detailed Information Below

USBL: Benthos DAT Technical Specs

Overview Specifications Applications Related Products Downloads

Benthos DAT (Directional Acoustic Transponder)​

  • Our Benthos DAT is an extension to the Teledyne Benthos ATM-900 Series modem, which automatically estimates the azimuthal and vertical arrival angles of a message sent by a remote modem. The system is a “modified’ ultra-short baseline (USBL) which uses a broadband component of a typical modem message to form estimates of arrival angle(s). While conventional USBL devices employ tonal signals, our appropriate processing of wide band signals provides far better combined range and arrival angle estimation, especially at low Signal to Noise Ratio (SNR). Our device offers a clear 360 degree field of view in azimuth, and an approximate vertical coverage spanning + 90º overhead to -50º below horizontal.
  • Our DAT’s compact size and low power consumption make it optimal for both surface and subsurface platforms. Acoustic modem and USBL functionality can now be integrated on Autonomous Underwater Vehicles in one system. Mounting our DAT on an AUV, as an inverted USBL system, can provide navigational accuracy unsurpassed by other systems.
Specification Description
Acoustic Modem: Data Range

​140-15,360 bps

Acoustic Modem Data Storage

​6 MB datalogger standard

Acoustic Modem Processing
  • ​Data redundancy, 1/2 rate convolutional coding mulitpath guard period slection
  • MFSK and PSK modulation schemes
Acoustic Modem Distances/Range
  • ​2-6 km common, greater distances possible
  • 20+ km available using repearter functionality
Acoustic Modem Frequencies
  • ​Low frequency (LF) 9-14 kHz
  • Mid frequency (MF) 16-21 kHz
  • Band C frequency (C) 22-27 kHz
Acoustic Modem Transducer
  • ​Transmit omni-directional (toroidal pattern)
  • Remote transducer head options available
  • Call for details
Acoustic Modem Connection
  • ​MBH-16-MP connector on unit, 9 pin RS-232 cable included
  • Port 1 RS-232, port 2 RS-232, power, ground, spare (1PPS option)
  • ​Inverted USBL system: mount the DAT on an AUV for unsurpassed navigational accuracy.
Teledyne Benthos / 49 Edgerton Drive North Falmouth, MA 02556 USA / ISO 9001 Certificate / Terms and Conditions
Phone: (508) 563-1000 / Fax: (508) 563-6444
Copyright 2017 Teledyne Technologies Incorporated. All rights reserved.