Operator Controls and Indicators via Keyboard and or/ Mouse.

• DC Gain: Manual or Automatic
• BT Gain: Manual
• Zoom Range: Manual
• Shift Range: Manual 
• Range: Manual or Automatic
• Display Color Control: (4) pre-set choices, or custom palette available.
• Depth Units: Feet or Meters, *milliseconds (*available in range -scale)
• NMEA Position: RMC, GGA, or GLL
• NMEA Heading: RMC, HDT, VHW, or VTG
• Manual and *Automatic Event Mark with selectable annotation for: Position, Speed, Heading, Time, Depth, Range, and File Name (*@ intervals of 1 minute) (example)
• Manual Text Record Annotation: User entered text.

External Interfaces

• Navigation Input (NMEA 0183)
• Centronics (Parallel Port) interface to TDU Series Thermal Printers.