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          $1,495.00

          The Modem M64 is a two-way half-duplex 64bps acoustic modem for wireless underwater communication with 200 meter (660 foot) range and user configurable data link. With a well-documented communication interface and Python library, it’s well suited for use on AUVs, remote sensors, and autonomous vehicles.

          In stock

          SKU: WL-11003-1
          HS Code: 8512.30.30

          Product Description

          The Water Linked M64 Acoustic Modem is a two-way half-duplex 64 bps underwater acoustic modem with a robust and user configurable data link, enabling wireless underwater communication. The operating principles can be found on the Water Linked website: .

          The M64 sets a new market standard with its record-breaking physical size, low power requirements, and cost. All this combined with a very useful technical specification and Python library, the M64 opens new possibilities for underwater communication in both existing and new areas.

          The Modem M64 has the following key specifications:

          • Two-way communication
          • 64 bit per second net data link, both ways
          • Typical latency ~500ms
          • 200 meter range

          Typical Applications:

          • AUV telemetry
          • ROV wireless control
          • Autonomous vehicle research
          • Wireless subsea sensors
          • Research projects
          • Any scenario where you need to wirelessly control and monitor subsea equipment

          Key Features:

          • Omnidirectional operation which will keep the data link stable even when the modem is in motion and/or being rotated around its axes.
          • Fully self-contained with no requirements for external computers, top-side controllers or other devices.
          • Packet based protocol with extensive use of error detection to enable a highly robust transmission.
          • The integrated status LED makes it easy to confirm that the communication link is established and when data is transferred.
          • Serial 115200 baud UART 3.3V interface makes the M64 easy to integrate with other subsea equipment like sensors, ROVs, and AUVs.
          • Easy to use API to transmit/receive packages etc.
          • Can be used in a setup where one modem transmits and receives while many other modems receives.
          • Can operate simultaneous with Underwater GPS.
          • Extremely small size enabling easy integration in other equipment.
          • Very low power consumption.
          • Highly robust operation, also in areas with acoustic reflections (shallow water, around installations etc.)

          Product Description

          The Water Linked M64 Acoustic Modem is a two-way half-duplex 64 bps underwater acoustic modem with a robust and user configurable data link, enabling wireless underwater communication. The operating principles can be found on the Water Linked website: .

          The M64 sets a new market standard with its record-breaking physical size, low power requirements, and cost. All this combined with a very useful technical specification and Python library, the M64 opens new possibilities for underwater communication in both existing and new areas.

          The Modem M64 has the following key specifications:

          • Two-way communication
          • 64 bit per second net data link, both ways
          • Typical latency ~500ms
          • 200 meter range

          Typical Applications:

          • AUV telemetry
          • ROV wireless control
          • Autonomous vehicle research
          • Wireless subsea sensors
          • Research projects
          • Any scenario where you need to wirelessly control and monitor subsea equipment

          Key Features:

          • Omnidirectional operation which will keep the data link stable even when the modem is in motion and/or being rotated around its axes.
          • Fully self-contained with no requirements for external computers, top-side controllers or other devices.
          • Packet based protocol with extensive use of error detection to enable a highly robust transmission.
          • The integrated status LED makes it easy to confirm that the communication link is established and when data is transferred.
          • Serial 115200 baud UART 3.3V interface makes the M64 easy to integrate with other subsea equipment like sensors, ROVs, and AUVs.
          • Easy to use API to transmit/receive packages etc.
          • Can be used in a setup where one modem transmits and receives while many other modems receives.
          • Can operate simultaneous with Underwater GPS.
          • Extremely small size enabling easy integration in other equipment.
          • Very low power consumption.
          • Highly robust operation, also in areas with acoustic reflections (shallow water, around installations etc.)

          Contents

          • 1 x Modem M64

          Specifications

          ParameterValue
          Acoustic
          Range200 m656 ft
          Frequency100-200 kHz
          DirectivityOmnidirectional
          Communications
          Data Rate through Water64 bit per second, both ways
          ProtocolSerial UART
          Baud Rate115200
          Data Buffer1 MB
          Latency~500ms
          Electrical
          Supply Voltage10-18 V
          Serial Voltage Out3.3 V
          Peak Current216 mAh at 12V
          Cable Length2 m 78 in
          Physical
          Length112 mm4.41 in
          Diameter30 mm1.18
          Weight (in air)128 g4.51 oz
          Depth Rating300 m984 ft
          Body MaterialPEEK
          Operating Temperture-5 to 60 °C23 to 140 °F

          Wiring Interface

          InterfaceColor
          Positive (10-18V)Orange
          NegativeOrange/White
          UART RXBrown
          UART TXBrown/White

          Terminal Interface

          The Modem-M64 has a simple 3.3 volt UART interface.

          SettingsValue
          Baud rate115200
          Data parity stop8N1
          Flow controlNone

          Documents

          (PDF)

          Revision History

          11 July 2019

          • Initial Release

          Libraries and Code Examples

          Example code and libraries that can be used to communicate with the modem on the terminal interface:

          Modem-M64 Protocol

          LED Indicator

          • No green light: Power is off.
          • Flashing green light (slow): Modem is trying to pair with another modem.
          • Fixed green light: Modem has sync with another modem. The LED will blink each time it receives a packet from the other modem.

          Community

          Blue Robotics Forum – Water Linked Acoustic Products