Using Structuremap With Mapping Cards; Structure Options - Lowrance HDS Live Operator's Manual

Using StructureMap with mapping cards

StructureMap allows you to maintain full chart capability and can be
used with preloaded cartography as well as C-MAP, Navionics, and
other third-party charting cards compatible with the system.
When using StructureMap with mapping cards, copy the
StructureMap (.smf ) files to the unit's internal memory. We
recommend keeping copies of StructureMap files on external
mapping cards.

Structure options

You adjust the StructureMap settings from the Structure options
menu. The menu is available when Structure overlay is enabled.
Not all options are available when saved StructureMap files are used
as the source. Unavailable options are greyed.
Range
Sets the search range.
Transparency
Sets the opaqueness of the Structure overlay. With minimum
transparency settings, the chart details are almost hidden by the
StructureMap overlay.
Palettes
Used for selecting the image's color palette.
Contrast
Determines the brightness ratio between light and dark areas of the
screen.
Water column
Shows/hides the water column in Live mode.
If turned OFF schools of bait fish might not be seen on the SideScan
image.
If turned ON the accuracy of the SideScan image on the map might
be affected by the water depth.
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StructureMap| HDS Live Operator Manual