1-4
• Imaging biologics in water column
• Mapping clam populations
• Beach re-nourishment
• Military and offshore oil applications
• Full ocean depth sub-bottom imaging (hull mount systems)
• Environmental site investigations
1.3 Main System Components
The 3200-XS Sub-Bottom Profiling System is composed of three main components: a 3200 Rack Mount
Processor; an SB-424, SB-216S or SB-512i Tow Vehicle; and a Tow Cable.
1.3.1 3200 Rack Mount Processor
The 3200 Rack Mount processor is shown in FIGURE 1-1 and consists of a 3200-XS Topside Processor and a
4.7-kW Power Amplifier that is mounted in a portable 19-inch rack type enclosure and shipped in a heavy-
duty reusable transport case. The processor and the amplifier can also be removed and mounted in any
standard 19-inch rack.
The processor includes a Mother board and a Sonar Interface board (Tiger board) as shown in F
IGURE 1-2.
The Tiger board interfaces to the Mother board via USB. It also includes an LCD monitor, a DVD R/W drive,
a keyboard, and a trackball.
The Tiger board stores the transmit waveform and the correlation filter as well as performs correlation
processing and spherical range correction. At periodic intervals, the Tiger board sends the transmit
waveform to a 16-bit D/A converter, which generates an analog pilot signal that is amplified by the Power
Amplifier to drive the transducer in the tow vehicle.
The acoustic returns from the sea floor are received by the hydrophone arrays in the tow vehicle and then
amplified by a preamplifier, which is also mounted in the tow vehicle. The output of the preamplifier
connects through the tow cable to a digitally-controlled amplifier on the Tiger board, and is sampled by a
16-bit A/D converter.
The Tiger board also performs the correlation processing, corrects for spherical spreading, and transfers
the data to the Mother board. For additional information on the Tiger board, refer to sub-section 2.1.4.
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