SO-KC TRANSDUCCII 



UOC TRANSDUCE* 



»»)))))))))))) 



DAT* HYDROPHONE 



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|wwv| 



TIMING -, 



SYNC 

 PULSE 

 INPUT 



30-KC 



POWER 



AMPLIFIER 



® 



1^ SYNC j_ 



I PULSE I 



_| OUTPUT l_ 



-H 



INPUT ^^ 



RANOINO 

 RECEIVER 





RANGE 

 COUNTER 



WITH 

 READOUT 









Figure 1 — Operational Diagram 



