FSI - Model HMS-624 -Dual Frequency Side Scan Sonar System

• The Tow Fish electronics incorporate FSI’s CHIRPceiver 24-bit CHIRP signal processing along with dual simultaneous
  100/400 KHz operation which results in very high resolution side scan data at towing depths up to 2,000 meters.
• The Topside Power/Data Multiplexer Interface is packaged in a standard 2U 19" rack mount enclosure and provides a 4Mb/s DSL connection for the Tow Fish, and a standard Ethernet connection for the data processor interface.
• The HMS-624 uses a flexible control interface connected via Ethernet that allows the user to set operating parameters such as CHIRP/CW modes, pulse length, range, and gain.
• The system is compatible with third-party Software packages such as QIC GeoDAS, Triton ISIS, HYPACK and others.

• Dual Simultaneous 100/400 KHz Frequency Operation
• Industry Standard Ethernet Interface  for Data, Control, and Processing
• DSL Over Coax Tow Vehicle Data Interface
• Compatible with Industry Standard Survey Software
• CHIRP and CW modes
• Stainless Steel Tow Fish
• Heading, Pitch, & Roll Sensors (Depth Optional)
• Two Serial Input Ports to Enable integration of a Magnetometer or other external sensors

System Operating Specifications

• Operation Frequency: 100 KHz, 400 KHz simultaneous; other frequencies available by request
• Signal Type: Chirp or CW User selectable
• Operating Range
• 100 KHz – 600 meters per side
• 400 KHz – 200 meters per side
• Horizontal Beam Width: 100 KHz – 1.0 degrees - 400 KHz – 0.3 degrees
• Vertical Beam Width: 60 degrees
• Depression Angle: Fixed 20 degrees tilted down
• Resolution Across Track: 100 KHz – 8cm - 400 KHz – 2cm
• Standard Sensor: Heading, Pitch, Roll
• Optional Sensor: Depth
• Serial Inputs for External Sensors: Two serial inputs for external sensors such as a Magnetometer, CTD, etc.; 12 or 24 VDC Sensor Power

Tow Vehicle Mechanical Specifications

• Material: 316 Stainless Steel
• Diameter: 12.7 cm (5 inches)
• Length: 152.4 cm (60 inches)
• Weight in air/saltwater: ~ 55 Kg/41 Kg (120 lbs/90 lbs)
• Operating Depth: 2,000 meters

Topside Power/Data Multiplexer Interface Specifications

• Enclosure type: 2U 19” rack mount
• Power Input: 115/230 VAC, 50/60 Hz
• Tow vehicle power supply rating: 300 VDC @ 2 AMPS
• Tow vehicle data interface: DSL, up to 4 Mb/s
• Sonar Processor data interface: Ethernet
• Tow Cable Type: Coaxial
• Tow Cable Lengths: Up to 6,000 meters, depending on cable diameter