Undersea Systems, Geophysical Equipment, Survey Sonar and ROV

Acoustic Modems

OEM Options

Size	14.04 cm (5.53 in.) Length, 4.64 cm (1.83 in.) Width, 6.90 cm (2.72 in.) Height for board set.
Weight	0.56 kg (1.25 lbs) electronics, 1.81 kg (4 lbs) or less (transducer)
Power	12-48 VDC (provided by customer)
Frequencies	Low frequency (LF) 9-14 kHz, Mid frequency (MF) 16-21 kHz
Transducer	Omni directional (180° beam), Directional (60° beam)
Connection	Cables provided for internal RS-232 connection, power connection, and transducer connection

Part Number	Description
013307	ATM-885 PCB Lf Modem electronics w/2 m cable and LF omni directional transducer on blocks
013450	ATM-885 PCB MF Modem electronics w/2 m cable and MF omni directional transducer on blocks
Call	ATM-885 PCB LF Modem electronics w/2 m cable and LF directional transducer on blocks
013684	ATM-885 PCB MF Modem electronics w/2 m cable and MF directional transducer on blocks

General Specifications

Baud Rate	140-15,360 bps
Bit Error Rate	Better than 10-7 with high SNR
Data Storage	704 Kbyte Data logger standard
Processing	Data redundancy, 1/2 rate convolutional coding mulitpath guard period selection MFSK and PSK modulation schemes
Distances/Range	2-6 km common, greater distances possible, 20+ km available using repeater functionality

Related Equipment
Click on the links below for equipment designed to work with this product group