Interpreting The Display; Freeze Frame And Active Cursor - Humminbird HELIX 5 SERIES Operation Manual

Interpreting the Display

Down Imaging beams "illuminate" the bottom contour, structure, and fish. The beams are wide
(side to side) but very thin front to back.
Use the light and dark parts of the display to interpret the objects under your boat as follows:
• Dark shades represent soft returns (mud, sand) or descending terrain.
• Light shades represent denser terrain (timber, rocks) or rising terrain. A very hard bottom
may appear as white on the display.
• White Streaks or Clouds may represent fish on the display.
• Shadows are not caused by light but by the lack of a sonar return. Objects standing on
the bottom cause a sonar shadow to appear on the display. The longer the shadow, the
taller the object. Fish may also cast shadows. You can use the shadow to interpret where
the fish or object is located in relation to the bottom.
Down Imaging Sensitivity
Use Down Sensitivity to control how the sonar returns appear on the display. Increase the
sensitivity to reveal weaker returns that may be of interest, especially in very clear water or greater
depths. Decrease the sensitivity to eliminate the clutter from the display that is sometimes present
in murky or muddy water. See the Down Imaging X-Press Menu for more information.

Freeze Frame and Active Cursor

Freeze Frame and Active Cursor - Press any arrow on the 4-WAY Cursor Control key, and the
screen will freeze and a cursor will be displayed. Use the 4-WAY Cursor Control key to move the
cursor over a sonar return, and the depth of the sonar return will be displayed in the cursor dialog
box.
Zoom: Use the zoom keys on your control head to see the returns near the cursor location at a
higher magnification. See Views: Down Imaging View for more information.
What's on the Down Imaging Display
Understanding the Down Imaging Display
The images you see on the Down Imaging display are
produced using sonar technology. Each time the unit
pings, a strip of data representing all the echoes
received by the transducer are put together on the
display to form the image that you see. Like traditional
2D Sonar, the sonar history scrolls left across the
screen.
26