deep sea
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FS 1690 Deep-sea Echosounder
The FS1690 is a digital echosounder ideally suitable foroffshore survey in full ocean depth.It is composed of asonar processor and two transducers of 10.5 kHz and25 kHz frequencies.The FS1690 realizes the inteligen-tized operation and control by adopting the technologyof digital signal processing(DSP)and computergraphics display.
FS1690 adopts digital signal processing technology and
computer graphics display technology to realize the in-telligent operation and control of the depth sounde.Alloperations of the depth sounder are performed withoutadjustment knobs.The depth sounder takes DSP as thecore to realize the control of transmission and recep-tion,TVG and AGC control,digitization and processingof echo signals,bottom echo search and tracking.
