Operation Manual

Saved files

When Saved files are selected, the StructureMap file is overlaid on the map based on position

information in the file.

If the chart scale is large, the StructureMap area will be indicated with a boundary box until

the scale is large enough to show Structure details.

Saved mode is used to review and examine StructureMap files, and to position the vessel on

specific points of interest on a previous scanned area.

Note: When saved files are used as source, the NSS evo2 displays all StructureMap files found

on the SD card and in the system’s internal memory. If there is more than one StructureMap

of the same area, the images will overlap and clutter the chart. If several logs of the same area

are required, the maps should be put on separate SD cards.

StructureMap tips

• To get a picture of taller structure (a wreck, etc) — don’t drive over it. Steer the boat so the

structure will be on the left or right side of your boat

• Don’t use Autorange when using SideScan. Set your structure range to a significantly

greater level (two-to-three times) than the water depth to ensure a complete scan and to

maximize conversion accuracy

• Don’t overlap history trails when conducting a side-by-side scan of an area

Recording StructureScan data

StructureScan data can be recorded from a chart panel with Structure overlay enabled.

StructureScan recordings can also be started from a StructureScan panel.

When StructureScan data is being recorded, there will be a flashing red symbol and a

message will appear periodically at the bottom of the screen.

Note: The message includes information about file size. Keep the size of your sonar logs to

100MB or less to allow for faster file conversion.

The sounder recording is stopped by re-selecting the record function.

Converting StructureScan data to StructureMap format

A StructureScan log file (.sl2) is converted to StructureMap format (.smf ) after recording from

the recording dialog, or from the files browser.

You can create standard or high resolution files. High resolution .smf files capture more detail,

but take longer to convert and are larger than standard resolution files.

To save disc space it is recommended to remove the StructureScan (*.sl2) files after

conversion.

Using StructureMap with mapping cards

StructureMap allows you to maintain full chart capability and can be used with embedded

cartography as well as Navionics, Insight and other third-party charting cards compatible

with the NSS evo2 systems.

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 SD

cards.

StructureMap | NSS evo2 Operator Manual