Undersea Systems, Geophysical Equipment, Survey Sonar and ROV

Acoustic Modems

ATM-886

Depth	2000 m (6,560 ft)
Size	13.97 cm (5.5 in) diameter x 36.65 cm (14.43 in) length Note: Dimensions for LF and MF omni, body is 8.89 cm (3.5 in) diameter
Weight	4.08 kg (9 lbs) Dry, 1.36 kg (3 lbs) Wet
Power	No internal batteries. 12-48 VDC external power required
Frequencies	Low frequency (LF) 9-14 kHz, Mid frequency (MF) 16-21 kHz
Transducer	Omni directional (180° beam), Directional (60° beam)
Connection	MBH-9-MP connector on unit, 9 pin RS-232 cable included

Part Number	Description
013428........................	ATM-885 LF Omni
013449........................	ATM-885 MF Omni
Call for availability.....	ATM-885 LF Directional
013687........................	ATM-885 MF Directional
Call for availability.....	ATM-886 MF Deep. 6000 meter

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

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