Lowrance 5 HDI Operator's Manual page 67

Custom mode options
Range
The range setting determines the water depth that is visible on the
image.
Auto range
By default, the range is set to Auto. With Auto, the system
automatically displays the whole range from the water surface to
the bottom.
Preset range levels
Allows for the selection of a specific depth range that is not tied to
the depth of the water.
Frequency
DownScan can be used at 800 kHz or 455 kHz. 800 kHz provides the
highest resolution with less range. 455 kHz has the best range, but
with lower resolution.
Restore mode default
This menu option is available if you customize one or more settings.
When selected all the customized settings are changed back to the
default settings.
Contrast
Determines the brightness ratio between light and dark areas of the
screen.
Ú Note:
We recommend you use Auto contrast.
To adjust the contrast setting:
1.
Select the contrast option in the menu
2.
Select Auto contrast and press the Menu/Enter key to turn off
auto-contrast
3.
Use the Arrow keys to highlight the adjustment bar and press
the Menu/Enter key to activate it
4.
Use the Arrow keys to adjust the setting
5.
Press the Menu/Enter key to save your settings
DownScan | Hook² Series Operator Manual
67