Kongsberg Simrad SN90 Reference Manual page 41

is intended to be used in a structured sequence that starts when you plan to
shoot the purse seine.
(C)
Mode
The four buttons in the
modes. To choose which function to apply open the
User Setting Buttons
Panel. Before you can assign custom user settings to the operating panel, a
selection of settings must be available from the
Operating Panel
User Settings
Press one of the
setting selected on the Operating Panel is identified in the upper left corner
of the Horizontal view. The identifying number refers to the
number on the
Click one more time to restore the original font size.
Presentation Modes
All echoes offered by the SN90 system are shown in rectangular views.
Combinations of these views are organized in presentation modes. Each
presentation mode offered by the SN90 system provides a selection of
views in a predefined pattern. You must first find the presentation mode
that meets your operational requirements, then you can change the size of
the individual views.
(D)
Gain
The buttons offer separate gain controls for the horizontal and vertical views.
Gain
You can compare this gain setting with the volume control on your car radio.
When the gain is increased, the echoes will appear stronger. Weak echoes will be
easier to see. However, since you also increase the acoustic noise in the reception,
the echo presentations will also show this noise. Too much gain may therefore
"distort" the presentation.
(E)
Range
The buttons offer range control for the horizontal and vertical presentations.
Range
The range setting defines from how "far" you want to detect echoes. In other
words, you specify the horizontal or vertical distance from the vessel to the outer
edge of the search area.
Note
Even though you can choose a large range value, that does not mean that you
can detect your targets on the same range. The range value only defines the
range that is shown in the views. Actual target detection will always depend on
the operational environment, such as water temperature, salinity, interference
and layers in the water column.
381294/E
field are dedicated for user settings or presentation
Mode
, assign one predefined setting to each button on the Operating
page is located in the
buttons to apply a predefined user setting. Any user
Mode
Operating Panel
Operating Panel
User Settings
dialog box.
Installation
page. Click on the text to make it larger.
Getting started
page. Under
dialog box. The
User Setting
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