Simrad SP70
6
850--164186 A
Functional principles
When the Omni beam is tilted, the total beam picture can be
compared with folding an umbrella, which means that all beams
in 360_ around the vessel have the same tilt angle.
Figure 3 - Omni beam
In the standard version, the beam can be tilted from +10_ up, to
-60_ down. For the optional 90_ tilt version, the beam can be tilted
from +10_ up to - 90_ down, where - 90_ is formed by one single
beam straight down like an echo sounder.
In addition to seeing the target from above, it is also possible to
see the target from the side, by using the vertical slice
presentation. In this case the beam covers a continuous vertical
beam from 0_ to -60_ in one transmission. For the optional 90_ tilt
version, a complete 180_ vertical slice can be presented.
This vertical slice, which is presented by the white audio line in
the horizontal picture, can be selected to any bearing by the
manual training control.
The combination of the OMNI mode and the vertical slice, will
give an optimal visualizing of the catch situation.
In addition to the OMNI picture, the vertical slice is especially
useful for visualizing the vertical distribution of a school of fish.
In that way, it is not necessary to go over the target to see the
distribution on the echo sounder, which often results in a
spreading of the school.
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