Vexilar FL-8SLT - Manual (Page 20)

20
the metal arm and the plastic housing of the transducer. This insula-
tion layer eliminates any transmission vibrations caused when the unit
transmits the signal to the water.
What Does the Bottom Light Mean?
Besides depth the bottom light can give you a lot of information. The
width and color content of the bottom signal can tell you what type of
bottom it is.
Ice fisherman can look for movement of color in the bottom signal.
If you see a red line move through the orange or green part of the bot-
tom signal, it's probably a fish close to the bottom and away from the
center point.
Open water fisherman usually can't see this because the boat moves
too much. You can, however, see changes in the bottom type as you move
along. The more red in the signal, the harder the bottom. The more green
and orange in the softer the bottom
Why is the Bottom Indication so Wide?
While fishing in a depth of 30 feet, a normal width of a bottom indi-
cation is from 5 to 12 feet wide. The width of the bottom is actually the
summation of the radius of coverage on the bottom and is controlled by
the gain control. The bottom width and color adjust automatically. The
leading edge of the bottom light is the actual depth. The color beyond is
the area, within the cone of sound, which is around the center point of
the circle you are covering on the bottom.