Furuno BBDS1 Bottom Discrimination Sounder

Revolutionizes finding fish with new bottom discrimination fish
finding feature

The Furuno BBDS1 Bottom Discrimination Sounder is
a new network fishfinder for NavNet 3D and NavNet TZtouch that
features an all new bottom discrimination function, as well as the
FDF (Furuno Digital Filter) capability of the DFF1. The BBDS1
determines the bottom structure and separates them into the
following categories: mud, sand, gravel and rock. This is achieved
by analysing echo characteristics from the bottom components such
as particle size and hardness.

Connect the BBDS1 to your NavNet 3D or NavNet TZtouch network and
get ready for your NavNet system to provide you with valuable
information to locate rich fishing grounds, boosting your
catch.

Choose between 2 Bottom Discrimination Display Modes
There are two bottom discrimination display modes to select from,
Standard Mode and Probability Mode. In Standard Mode, the most
probable materials on the bottom (mud, sand, gravel or rock) are
indicated in either graphic mode or a 4-colour bar on the bottom of
the display.

Because bottom material can change frequently and can sometimes be
difficult to identify, Probability Mode shows you what material the
bottom has the greatest chance of consisting of by displaying the
possible bottom materials proportionally within the 4-colour
bar.

Furuno BBDS1 Bottom Discrimination Sounder
Features:

• Frequency: 50/200 kHz alternately transmitted
• Choose between 2 Bottom Discrimination Display Modes: Standard
  or Probability mode
• Output power: 600 W/1 kW
• Power supply: 12-24 VDC: 1.1-0.4 A (in output power of 1
  kW)
• Temperature : -15 to + 55 degree Celsius (in
  operation)
• Relative humidity: 93% at 40 degree Celsius
• Waterproofing: IP20 (not waterproofed)

Required Conditions for Bottom Discrimination

• Detection range: 5-100 m
• Boat speed: 0-10 kn
• Transducer mounting: Thru-hull or transom mount only
• MFD8/12/BB software: v2.06 or later

Notes:

• The result shown by this function may sometimes be
  different from the actual bottom components.
  
• For best performance, do not use in-hull mounted
  transducers with the BBDS1.
  
• The BBDS1 may show an incorrect ground discrimination
  result, especially when there is a big fish school right under the
  boat. This is because enough echoes may not be received from the
  bottom.
  
• Materials such as shell, coral, or a sunken ship are
  indicated as the most similar material from the four bottom
  categories: mud, sand, gravel, or rock, according to reflected
  echoes.
  
• Auto mode is automatically activated when the bottom
  discrimination function is turned on. (Manual mode is not
  selectable.)
  
• The BBDS1 is not compatible with NavNet 1 or NavNet
  vx2.
  
• Use appropriate Furuno Transducer recommended for best
  results
  

Furuno BBDS1 Bottom Discrimination Sounder Operator’s
Manual

List of Transducers for Bottom Discrimination Functionality

BBDS1 and DFF1 Mode Switch Settings 12-5-12