442704/A
487
5
Use for scattered fish located close to the bottom. This setting uses a slightly different
algorithm than the other scattered fish settings.
Scattered
Use for scattered fish. This setting uses a slightly different algorithm than the other
scattered fish settings.
7
Use for scattered fish. This setting uses an algorithm dedicated for higher bandwidth.
8
Use for schools. This setting uses an algorithm dedicated for higher bandwidth.
9
Use for schools. This setting uses an algorithm dedicated for higher bandwidth.
Experimental
These options are provided for software development purposes.
Related topics
Improving the recognition of fish and schools using receiver filters, page 117
Functions and dialog boxes, page 416
Active menu; Functions and dialog boxes, page 466
Bottom Filter Threshold function
The ST90 system provides a bottom filter to reduce the sometimes powerful echo from
the seabed.
How to open
You open this function from the
Active
menu.
Description
This filter is useful if you try to find fish close to the bottom. Select a
Bottom Filter Threshold
value to control the "strength" of the filter. A higher numerical value increases the filter
efficiency and reduces the bottom echo accordingly.
Select the middle of the button to open a small menu with the available options. Select the
left
side of the button to select a "lower"' menu choice. Select the
right
side of the button
to select a "higher"' menu choice.
Summary of Contents for Simrad ST90
Page 1: ...kongsberg com simrad Simrad ST90 REFERENCE MANUAL ...
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Page 337: ...442704 A 335 Related topics Sonar views page 326 User interface ...
Page 413: ...442704 A 411 Related topics Menu system page 375 Display menu page 384 Menu system ...
Page 631: ...442704 A 629 Related topics Concept descriptions page 626 Concept descriptions ...
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Page 688: ... 2021 Kongsberg Maritime ISBN 978 82 8066 211 8 ...
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Page 690: ...Reference Manual Simrad ST90 ...