The choices in this menu depends on which view in the display presentation that is currently "active". The menu may therefore change from one view to another. The screen capture may not show you all the menu choices.

Functions and dialog boxes

Visual Objects

Visual Objects is an "on/off" button used to open the Visual Objects menu. The Visual Objects menu controls which graphical elements that are shown in the different views. These graphic elements include markers, vectors and targets that are tracked. The majority of the functions are "on/off" buttons to enable or disable these graphic elements in the various views.

Visual Objects menu

Cosmetics

Use the functions on the Cosmetics menu to turn "cosmetic" elements in the sonar presentation on or off. The majority of the functions are on/off buttons to enable or disable "cosmetic" elements in the sonar views. This function is not available in all the views.

Cosmetics menu

Transparency

When you open an information pane, you will see that it is transparent. This transparency allows you to see the echo data behind the pane, but it may also reduce the visibility of the information in it. The transparency can be adjusted.

Motion

In selected views you can control how the vessel symbol shall "behave" in the presentation. The way the vessel moves in the presentation can be chosen either true or relative.

View Range

Use View Range to expand the range shown in the relevant views to any percentage of the original Range setting. This function can be used if you wish to move your ship symbol to the bottom of the view. You can then expand the range without adding zoom.

Display Gain

Use Display Gain to increase or decrease the "strength" of the echo presentation.

Panel Backlight

The buttons on the Operating Panel have a built-in backlight to improve visibility on a dark bridge. Use Panel Backlight to control the intensity of the lights.

Colour Threshold

The Colour Threshold function allows you to reduce or increase the number of colours. This will provide a filtering effect that removes the weakest echoes.

Screen Brightness

The intensity of the light given off by the display presentation can be adjusted. You can use this function to increase or decrease the light from the screen to match the ambient light.

Display Options

The top bar gives you fast access to key functionality and navigational information. It provides buttons to hide or show the menu, to monitor data recording, to open the Messages dialog box, and to open the context sensitive on-line help. To choose which navigation elements to see on the top bar, use the functionality provided in the Display Options dialog box. It controls the location of the menu. You can also select which tooltips to appear when you move the cursor over the echo information. The dialog box is organised in pages grouping parameters for different parts of the application.

The following pages are provided:

General

The General page in the Display Options dialog box controls the location of the menu. You can select which navigational information to be shown on the top bar. You can also choose to see Coordinated Universal Time (UTC) at the bottom of the presentation.

Map Display

Once a map service has been chosen, use Map Display to choose which map elements to include in the map presentation. The map is only shown in Horizontal views when Range Projection is set to True.

Safety Depth

The Safety Depth page allows you to change the safety depth settings, and thus the presentation of the various water depths. Once a map is projected on top of the echo data, the depth contour lines are drawn with specific colours.

Tooltip

When you move the cursor over the echograms in the display presentation, small "tooltips" are shown to provide additional information. The Tooltip page controls which tooltips that are shown.

Own Ship

In order to maintain a visual presentation of your vessel’s previous movements, you can draw these with a line. This line is drawn after the vessel symbol in the sonar views, and visualizes your past movements. We refer to this line as the History Line. When the history line is active, the length (in minutes) of the line can be defined.

Vertical View Orientation

The Vertical View Orientation page allows you to decide whether the vertical views should be presented from right to left, or from left to right.

Off Centre

When the vessel symbol is moved away from the centre of the view, more space is made available for the echo presentations. If you keep the same range setting, this added space causes a "zoom" effect. The distance from the vessel to the outer edge of the search area is the same, but it is "stretched" out. You may not want this to happen.

Current Flow

A current sensor can be connected to the ST90 system. This can for example be an acoustic Doppler current profiler (ADCP). The information from this sensor is presented in the applicable views. Use the Current Flow page to define key settings for the presentation of the sensor data.

The Current Vector function shows you the speed and direction of the water current under your vessel. One or more arrow are drawn to or from the vessel symbol to indicate the properties of the sea currents.

Cursor Readout

It is often helpful to see information about the cursor and the active markers in the view. Use the Cursor Readout functionality to add information to the readout fields in the bottom corners of the view. When enabled, you can see the cursor's position (bearing and distance) and depth in the lower right corner of the view. The depth is calculated from the current tilt and the distance from the vessel. You can also place information about a tracked target or a priority marker in the bottom left corner of the view.

Presentation Modes

All echoes offered by the ST90 system are shown in rectangular views. Combinations of these views are organized in presentation modes. Each presentation mode offered by the ST90 system provides a selection of views in a predefined pattern. To open a presentation mode use the relevant tab on the bottom bar. Use the functionality offered by the Presentation Mode page to choose which presentation modes to choose from.

Colour Setup

The Colour Setup dialog box controls the presentation colours used by the ST90 system. This includes the palette ("skin"), the number of colours in use, and the colour scale when no Time Variable Gain (TVG) setting has been selected for the presentation.

Docking Views

Each presentation mode offered by the ST90 system provides a selection of views in a predefined pattern. These are placed at different positions with different sizes. With the Docking Views function you can move and re-size the views in the display presentation.

Once the Docking Views function is activated, the various views are placed in named windows, and docking positions for these windows are shown. The docking positions show you where to drag and drop the selected view. Any view can be selected, and then repositioned as indicated by the docking positions.