Automated computed tomography system Swept

Swept Frequency Source - Acoustic Tomography ​Available as an integrated package including projector, signal generator, amplifier, microprocessor controller, and batteries For acoustic tomography, RAFOS, and other applications Maximum operating depth: 6000m New acoustic projector design capable of swept-frequency output under digital control. Available as an integrated package including projector, signal generator, amplifier, microprocessor controller, and batteries. Available as a transceiver modification, which integrated with 4-channel acoustic STAR receiver (SCRIPPS), included a hybrid Rubidium low consumption clock and underwater acoustic navigation. Intended for long-term moored applications in depths to 6000m. The organ-pipe projector is not gas compensated, and has unlimited operating depth. FREQUENCY RANGE - Frequency sweep, 200-300 Hz; Rafos sweep; CW signals 200-300 Hz MAX SPL - 189 dB re 1 micropascal at 1 m, efficiency 50% DIRECTIVITY INDEX - 3 dB in horizontal direction PROJECTOR - Micro-controller tunable "Organ Pipe" with a symmetrical Tonpliz transducer, free flooded, 36 cm diameter CONTROLLER - 32 bit Motorola MC68CK338 micro-controller. Programmable via external SAIL connector. Integrated with 4-channel STAR receiver system (SCRIPPS) with the hybrid Rubidium low power clock and underwater acoustic navigation. Long term stability: 3 ms for 1 year