The Modem M64 is a two-way half-duplex 64bps acoustic modem with a robust and user configurable data link.
The M64 sets a new market standard with its record-breaking physical size, low power requirement and cost. All this combined with a very useful technical specification, the M64 opens new possibilities for underwater communication in both existing and new areas.
64 bit per second net data link, both ways
Latency 1.5 – 2.5 sec
200 meter range
No green light: Power is off.
Flashing green light (every 3 seconds): 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 (once a second).
The tables below shows the pinning of the Modem-M64 interface.
The Modem-M64 has a 3.3 volt UART interface.
|Data parity stop||8N1|
Modem M64 supports channels 1-7. Channel overveiw can be found here.
Libraries and code examples
Example code and libraries that can be used to communicate with the modem on the terminal interface: