E-4 



■ DIGITOW 



Operating Depth : 6,096m (20,000 ft) 



Dimensions (LxWxH ): 2.i+m x 1.5m x 1.2m (8 ft x 5 ft x h ft) 

 Weight (Dry ): 5^Ukg (l,200 Its) 

 To-wlng Sp"eed : 1.5 knots (2.8km/hr) 



Power: 120 VAC, single phase, 60Hz. Total continuous power supplied 

 will be 3 Kw. 



Instrumentation: Initial complement: Five sonars (up-looking, down-looking 

 and transponder ranging) , side scan sonar. An obstacle avoidance sonar 

 and transponder ranging), side scan sonar. An obstacle avoidance sonar 

 will be added in the future. Future instrumentation capability includes: 

 shallow and deep penetration sonar, water temperature sensor, pressure 

 sensor, magnetometer (2), two normal angle and one wide angle still 

 cameras with strobe, conductivity/dissolved soygen/sound velocity sensors, 

 doppler sonar, CCTV. DIGITOW incorporates a micro-processor based 

 all-digital data system. A downlink command capability of 1,000 bits 

 per second will be provided, with an uplink data rate of 250,000 bits 

 per second. Each instrument will be provided with a standard micro- 

 processor based interface unit to accommodate unique requirements with 

 software. Data from all instriiments will be obtained digitally, trans- 

 mitted up the coaxial cable and recorded on magnetic tape aboard ship. 

 These data will be annotated accordingly and preserved as the original 

 record. 



Navigation: Not yet defined 

 Support Ship Requirements: Not yet defined 

 Crew: Not yet defined 



Status : Final design is not fully completed. Some components of the 

 vehicle are now \inder development. 

 Builder: Jet Propulsion Laboratory 



California Institute of TEchnology 



Pasadena, CA 



