News Flash!

Announcing the world’s highest performance underwater acoustic modems (30th Oct, 2020): The Aquacomm Gen2 modems can now operate below the noise floor at -10db to -15db SNR with +/-10knots Doppler compensation in highly reflective and noisy environments.

This allows customers to deploy underwater wireless data links even in the most harsh environments such as high noise sub-sea oil and gas projects, shallow and noisy environments as well as in highly reflective concrete or metal structures such as pools or tanks. We challenge any competitor modem to beat our performance in any difficult underwater application.

We offer these ground breaking products at a reasonable cost for the evaluation stage and at low cost in volume. We understand the needs of the OEM for high volume applications.

Aquacomm: Underwater Acoustic Modems

Home Aquacomm: Underwater Acoustic Modems

Aquacomm underwater acoustic modems are the ideal choice for underwater wireless communications when utmost reliability and flexible design integration are critical to the success of your application.

Aquacomm Gen1 Modem

Features	Attributes	Benefits
Highly reliable underwater acoustic modems	Purpose-designed algorithms and electronics for highly reliable underwater acoustic communications Shown to be the most reliable in numerous independent tests by major organizations Proven over many years of commercial use	Works in virtually any real-world sea state where others have failed Dramatically reduce operational risks and maintenance costs Brings certainty and confidence that your application will work
Low power consumption	Uses 10-20 times less power than competing products	Lower maintenance requirements and total cost of ownership Broadens the types of applications AquaComm can be used for
Ease of integration	DSPComm is an OEM specialist Small form factor, lightweight Transparent command modes Easy to understand command structure Standard RS-232 connection for DC-DTE Quickly and successfully integrated with numerous products	Quick and low-cost integration Lower total cost of ownership
Small form factor and lightweight	Less than half the size of competing modems	Broadens the types of applications AquaComm can be used for

AquaComm underwater acoustic modem is available in 100 bits/sec, 240 bits/sec 480 bits/sec versions and in two forms:

OEM: AquaComm modem module for integrating into an OEM’s housing
Encased: AquaComm modem module encased in AquaCase

Detailed technical specifications:

Parameter	Details
Data rates	100 or 480 bits per second depending on model
Bit Error Rate	10^-6 bit error rate or better
Acoustic Doppler Tolerance	High immunity to noise and to multi-path and Doppler fading. Acoustic Doppler tolerance of +/- 5ms-1 (approximately +/-10 knots)
Bandwidth	Broadband operation 16Khz to 30Khz. Other operational bandwidths available
Range	Underwater acoustic modems tested to 3km range. Longer ranges possible up to 5km. Available in high power version with 30W transmit power.
Modulation	Direct sequence spread spectrum / OFDM
Error detection	CRC16 error detection
Through water communications protocol	· Confirmed packet delivery with error detection. If the transmitting end does not receive an acknowledgement, it will resend the data two more times. Number of retries is configurable. · Transparent data transfer mode – ideal for instrumentation · Low power – transparent data transfer mode (consumes 1/10^th the stand by power)
Addressing	Uniquely addressable. Six digit numeric address set through host command. Million possible addresses.
Receive sensitivity	Ability to set the receive sensitivity
Transmit power	Ability to set the transmit power level
Physical size	8cm x 7cm x 1.5cm (excluding Transformer )
Electronics	Digital signal processor based
Power supply input voltage	DC 5V to 12V
Current consumption @ 6V DC	24mA (nominal) in normal wake operation 2.4mA in power save receive Less than 150uA in sleep model
External connections	10 pin KK header to connect power, host communications, reset line and wake up line 2 pin terminal to connect hydrophone transducer
Host communications	· RS232 serial communications. 9600 baud (default),1 start bit, 1 stop bit, no parity 4800, 2400 or 1200 baud programmable Either TTL voltage levels (3.3V) or RS232 voltage levels selectable· Optional RS485 available
Host command	Simple ASCII command set to configure and command the modem
Temperature range	-5 degC to +50 degC