Hardware manual

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990-0000058-1000 Rev F Page 19
application are stored in 512MB of compact FLASH memory. The IDE interface
provides the data path between the processor & Sonar Interface Board (SIB).
3.2. Sonar Interface Board (Tiger Boards)
The Sonar Interface Board Set (SIB) is the real-time controller for sonar processing. It
includes transmit waveform tables and multiple channels of 10-bit high speed D/A
converters, support for external and internal triggers, and support for multiple sonar ADC
converters. It was designed to support a combined sonar system (with both sub-bottom
as well as multi-frequency side-scan capability), or to be used single channel as a basic
sub-bottom controller. At periodic intervals it generates the transmit waveform(s), and it
continuously buffers ADC data.
These sonar interface boards represent a new generation of reengineered and optimized
sonar electronics. This tiger board set is designed to address a broad spectrum of sonar
applications from a common and well tested base of components. Among the features of
this generation are lower power consumption, higher speeds, smaller form factors, and
high analog sensitivity / minimum noise electronics for improved operating ranges.
The sonar interface board is actually comprised of a three board set of cards. The three
board set is made up of SB Carrier Board, Sub-Bottom Acquisition Board, and
Sonar/IDE Interface Board.
3.2.1. SB Carrier Board
This board has the same physically size as an industry standard full slot PCI card. There
are two BNC connectors (J1-Triger-In & J3-Triger-Out) and female connectors on either
side for mating with the other two boards in the card set. An on board DC-DC converter
provides the +12 volts to the preamp in the tow fish.