Gemini Software Operation
Gemini Profiling System
0695-SOM-00001, Issue: 03
46
© Tritech International Ltd.
When the mouse pointer is within the ‘cone’ on the sonar display (that is over the
displayed sonar image), the indicators at the bottom right hand side of the screen will
show the position of the mouse pointer relative to the origin of the display (that is
relative to the CRP). The pointer position is expressed as a range / bearing pair, and
as a Cartesian co-ordinate (X, Y).
The target intensity local to the point will also be shown.
12.3.17. Scan Sector
Note
If the
Spacing
is set to
Fixed (Low Bandwidth)
in
Beam Setup
then sector adjustment is not available and the full scan width will be used.
Around the edge of the sonar cone there are three handles that allow the scan sector
(also known as the aperture) to be adjusted. Adjusting the scan sector can be useful if
the area of interest is narrow such as a pipe trench (the beam setup will also require
adjustment, see Section 12.4.8, “Beam Setup”).
Click and hold the mouse over one of the handles. The clicked handle, and any other
handles that will move when the mouse is dragged, will be highlighted. Square shaped
handles adjust the edges of the scan sector. Diamond shaped handles adjust the centre
of the scan sector.
Drag the mouse to move the handle to the desired location and then release the mouse
button. There will be a short delay (depending on network bandwidth) while the sonar
is updated with the new scan sector.
It is possible to adjust the scan sector using the keyboard by pressing '
b
' or '
g
'.
Note
It is possible to adjust both the left and right sides of the scan sector
symmetrically by holding down the
shift
key on the keyboard while
moving the handle.
