Kongsberg Simrad FM90i, Reference Manual

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Customizing the sonar applications
You can select which sonar applications will appear in the
sonar applications list
. To get the
best net picture, choose the sonar applications that describe the kind of trawling that you do.
Context
There are two groups of sonar applications designed for the FM90i — Bottom and Midwater.
The Bottom sonar applications allow you to see a clear net picture, even when trawling
close to the bottom.
The Midwater sonar applications allow you to see the net picture with a fast update rate.
Note
All sonar applications apply to the up-sounder and down-sounder views, as well as the net
opening view.
•
Bottom
Use this application for normal bottom trawling.
•
Bottom - Hard
Use this application for bottom trawling on a hard bottom.
•
Bottom - Mid Water Column (MWC)
Use this application for bottom trawling when the sonar is in the mid-water column.
•
Bottom - Shallow
Use this application for bottom trawling in shallow water.
•
Midwater
Use this application for normal midwater trawling.
•
Midwater - Mid Water Column (MWC)
Use this application for midwater trawling when the sonar is in the mid-water column.
•
Midwater - Shallow
Use this application for midwater trawling in shallow water.
•
Midwater Noise
Use this application for midwater trawling in a noisy environment.
Note that Midwater Noise is a test application that does not transmit — it only receives.
Use this application to determine if there is environmental noise present (for example,
from the gear touching the bottom, or from other sonars pinging).
Operating procedures