53
Adjusting sensitivity in Auto Sensitivity Mode is similar to manually ad-
justing a car's speed while cruise control is on. You can tell the car to run
faster, but when you let off the gas the cruise control automatically keeps
you from running slower than the minimum speed setting. In this sonar
unit, auto mode will let you increase sensitivity to 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 sensitivity 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 control of the car's
speed. In the sonar unit, manual mode allows you to set sensitivity at
to the maximum or minimum settings. Depending on water conditions,
the bottom signal may completely disappear from the screen when you
reduce sensitivity to about 50 percent or less.
Try adjusting sensitivity in both auto and manual modes to see how
they work.
To adjust sensitivity:
1. Press
MENU|ENT.
2. The Sensitivity Control Bar appears. Press ↓ to decrease sensitivity.
Press ↑ to increase sensitivity. When it is set at a desired level, press
EXIT. If you reach the maximum or minimum limit, a tone will sound.
