• | Horizontal |
• | Vertical |
• | 270 Vertical |
• | Catch |
• | Echogram |
• | Plane |
• | Inspection |
1 | At the bottom of the display presentation, select a suitable presentation mode, and activate the Horizontal view. The Horizontal view presents the 360 degrees area around your vessel from a bird’s eye view. The current bearing is shown with a solid line pointing out from the vessel position. You can change the angle by means of the Bearing function on the Main menu. You can also select the bearing line and drag it sideways.
The bow marker is shown as a dotted line drawn from the bow of the vessel symbol. The line reflects your vessel’s current heading. The bow marker can be enabled or disabled on the Visual Objects menu.
The distance from the vessel symbol in the centre of the circle to the outer ring corresponds to the currently selected range.
The Cosmetics menu controls which "cosmetic" features that used.
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2 | At the bottom of the display presentation, select a suitable presentation mode, and activate the Vertical view. The Vertical view shows you a "vertical slice" of the echo data. The direction of the vertical slice is indicated and controlled by the bearing line in the Horizontal view. The area covered by the vertical beam is shown as a triangle in the Horizontal view. You can change the bearing on the Main menu. You can also select the bearing line in a Horizontal view and drag it sideways.
The upper horizontal line in the view represents the water surface.
The current tilt is shown with a solid line. You can change the tilt angle by means of the Tilt function on the Main menu. You can also click on the tilt line and drag it up and down.
A line of X’es in the vertical views shows the bottom of the purse seine. The depth is defined for the fishing gear you have chosen. Under Fishing Gear, select Fishing Gear Setup to open the dialog box. For the selected purse, select a depth value. Use Purse Depth on the Cosmetics menu to toggle this line On or Off.
The Cosmetics menu controls which "cosmetic" features that used.
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3 | At the bottom of the display presentation, select a suitable presentation mode, and activate the 270 Vertical view. The 270 Vertical view is designed for purse seining. The presentation combines a horizontal "bow up" presentation with a vertical slice. By default, the vertical view is shown in the lower left corner of the presentation. If you use a net on your port side, you can place the view in the bottom right corner. The area covered by the vertical beam is shown as a triangle in the Horizontal view.
This view makes it easy to keep contact with the school. You can determine its size distribution, and monitor the position the school relative to the bottom.
The throw side is defined for the fishing gear you have chosen. Under Fishing Gear, select Fishing Gear Setup to open the dialog box. For the selected purse, set throw side to Port or Starboard.
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4 | At the bottom of the display presentation, select a suitable presentation mode, and activate the Catch view. Use the information in the Catch view to monitor the progress of the purse seine operation. The view does not offer any echo data.
If you have connected a compatible catch monitoring system to your SU90 system, information from these sensors are shown in the Catch view.
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5 | At the bottom of the display presentation, select a suitable presentation mode, and activate the Echogram view. The Echogram view provides echo data from a horizontal beam in a common echogram presentation. The echo data is taken from the current bearing and tilt. The beam used to provide data is identified in the top left corner of the view. Horizontal dotted lines show the depth intervals.
Left-click in the Echogram view to open the tooltip. The tooltip provides the cursor location in the echogram (slant range, true range and depth) as well as the current pulse
duration and time.
The Horizontal Scroll function controls how fast the echo presentation shall move from right towards left in the Echogram and Inspection views. The speed is controlled by adjusting the number of pixels used to present each ping. A higher speed will update the view faster, but will also reduce the resolution.
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6 | At the bottom of the display presentation, select a suitable presentation mode, and activate the Plane view. The Plane view presents the echo data in a horizontal sector ("fan"). The sector direction can be changed in both vertical and horizontal directions. The tilt is drawn in the Vertical and Horizontal views as two dotted lines. The same dotted lines are shown in the Horizontal view as a dedicated bearing line to visualize the direction of the plane beam.
The Horizontal Tx Sector function defines the opening angle of the sector.
Tip
To fully understand how the beams behave in this view, use the Beam Visualization dialog box.
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7 | At the bottom of the display presentation, select a suitable presentation mode, and activate the Inspection view. The SU90 system offers an inspection beam. The inspection beam is presented using an Inspection view. You can train and tilt the beam independent of the beams displayed in the other views. You can use the Inspection view to study single fish, schools and bottom conditions in detail.
The Inspection view shows you echo data from a separate beam. The opening angle of the inspection beam depend on the operating frequency. Since the Inspection view operates with its own dedicated beam, the operating frequency can be adjusted independently of the other views. The echo data in the Inspection view is not subjected to AGC and RCG filtering.
The Inspection view can be regarded as an "echo sounder" with an adjustable direction. In the SU90 system we use the phrase echogram to describe the information provided by the view.
Tip
To fully understand how the beams behave in this view, use the Beam Visualization dialog box.
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