Lowrance HDS Gen3 Touch, Operator'S Manual

Page: 84 / 166

surface clutter by decreasing the sensitivity of the receiver near the
surface.
Noise rejection
Signal interference from bilge pumps, engine vibration and air
bubbles can clutter the sonar screen. The noise rejection option
filters the signal interference and reduces on-screen clutter.
Log sonar
You can Log sonar data and save the file internally in the HDS Gen3
unit, or onto a microSD card as described in
"Recording Sonar data"
on
page 68.
Position adjustment
You must align the SpotlightScan image with the direction the
motor is pointing. Refer to
"Aligning the SpotlightScan image"
on page 83.
Look Ahead
You can make the top half of the image predominant on the
display, for a better view of what is in front of you. Select Advanced
and then Look Ahead menu options in the Structure menu to
toggle it on and off.
Contrast
The contrast determines the brightness ratio between light and
dark areas of the screen. This makes it easier to distinguish object
from the background.
Palettes
You can select between several display palettes optimized for a
variety of fishing conditions.
View
You can select between SpotlightScan and DownScan.
Stop sonar
Pauses the sonar. Re-select to restart the sonar.
84
SpotlightScan | HDS Gen3 Operator Manual