B&G Zeus2 12 - Manual (Page 75)

StructureMap
The StructureMap™ feature overlays SideScan images from a StructureScan source on the
map. This makes it easier to visualize the underwater environment in relation to your
position, and aids in interpreting SideScan images.
The StructureMap image
The example below shows a chart panel with Structure overlay, combined with a traditional
SideScan panel.
You move around in the chart as usual when you have a Structure overlay;
• zoom the chart and the scanned image by turning the rotary knob, by using the zoom
icons, or by using pinch and spread gesture
• move the chart to view the scanned image by dragging your finger in the selected direction
Pressing the X key or selecting the Clear cursor option will remove the cursor from the
panel, and the chart center will be positioned at the vessel.
Activating Structure overlay
1. Turn on Structure overlay from the chart menu
- The chart menu will be increased to show Structure options
- Structure data will start to appear on the chart screen as soon as Structure overlay is
enabled
2. Select Structure source
- Live data is default
Ú Note: Structure overlay can also be activated by selecting a saved StructureMap file in the
files browser.
StructureMap sources
Two sources can be used to overlay Structure logs on the charts;
• Live data, used when StructureScan data is available on the Zeus 2 system
• Saved files. These are recorded StructureScan (*.sl2) data that are converted to StructureMap
(*smf) format. Saved *.smf files can be used on Zeus 2 units even if no StructureScan units are
connected.
Live source
When live data is selected the SideScan imaging history is displayed as a trail behind the
vessel icon. The length of this trail will vary depending on available memory in the unit and
range settings. As the memory fills up the oldest data will automatically be deleted as new
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.
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StructureMap | Zeus2 Operator Manual 75