27
100 percent, but the unit will
limit
your
minimum
setting. This prevents
you from turning sensitivity down too low to allow automatic bottom
tracking. When you change the setting with auto turned on, the unit will
continue to track the bottom and make minor adjustments to the sensi-
tivity level, with a bias toward the setting you selected.
Adjusting sensitivity in Manual Sensitivity Mode is similar to driving a
car without cruise control — you have
complete
manual control of the
car's speed. In your unit, manual mode allows you to set sensitivity at
100 percent (maximum) or zero percent (minimum.) Depending on wa-
ter and bottom conditions, the bottom signal may completely disappear
from the screen when you reduce sensitivity to about 20 percent or less!
Try adjusting sensitivity in both auto and manual modes to see how
they work.
Sensitivity menu screens. Left, automatic or manual menu.
Right, Sensitivity Adjustment menu.
To adjust sensitivity:
Press
MENU
until the
S
ENSITIVITY
A
DJUSTMENT
menu appears. Press
UP
ARROW
to increase the sensitivity,
DOWN ARROW
to decrease it. When
it's set at the desired level, press
PWR
to clear the menu.
The sensitivity percentage in use shows in this menu. As you change
the setting, echoes scrolling onto the screen will show the effects of the
change. If you reach the maximum or minimum sensitivity level, a tone
sounds alerting you to the limits.
