The 320BR Deep Water echosounder is a rackmounted high power system for full ocean depth surveys. It features 3.5 and 12 kHz dual frequency configuration options and a high power 5 or 10 kW main transmitter and a 2 kW second transmitter with efficient switchmode operation. The 320BR fits conveniently into a standard 19" rack with a 5U rackmount case. The 320B echosounder uses a SCSI link to a notebook or personal computer. All echosounder control functions are managed through the WindowsR interface and echo data is scrolled across the computer screen. The graphic record data can be stored to any WindowsR device, such as optical drives, hard drives and CD. The 4 RS232 serial ports allow for survey tools such as GPS, heave sensors, and dataloggers to be easily integrated.