Garmin 160C - Manual (Page 19)

Fishfinder 160C Owner’s Manual 15
O
PERATING
I
NSTRUCTIONS
> T
HE
S
ETUP
M
ENU
Whiteline
The Whiteline setting controls how the unit displays information
about the bottom type (hard or soft). With Whiteline off, the bottom
return displays as a solid color. With Whiteline on, the strongest
area of bottom return becomes white and can be used to determine
bottom hardness. A hard bottom returns a stronger signal and
displays a thicker bottom layer. A soft bottom returns a weaker
signal and displays a thinner bottom layer.
Whiteline Off
Whiteline On
Hard Bottom Soft Bottom
Auto Gain
The Auto Gain setting controls the sensitivity of
the receiver when in the gain option is set to Auto.
Auto Gain has three settings; High, Medium,
and Low. Increasing the Auto Gain setting makes
the FF160C more aggressive when adjusting gain
automatically. High auto gain may lead to excessive clutter on the
screen.