B&G Zeus2 Glass Helm CPU - Manual (Page 80)

data is added. When increasing the search range the ping speed of the StructureScan
transducer is reduced, but the width and the length of the image history will be increased.
Ú Note: Live mode does not save any data. If the unit is turned off, all recent data is lost.
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.
Ú Note: When saved files are used as source, all StructureMap files found on the SD card and in
the system’s internal memory are displayed. 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.
Ú 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 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 SD
cards.
80 StructureMap | Zeus 2 Glass Helm