Tool bar description
The tool bar provides buttons for functions, filters, and sonar view overlays.
Image
The tool bar provides access to useful functions, such as the ability to take a screenshot or change your TVG settings. In addition, several measuring tools are available.
A Arrow
Click to use the default arrow cursor. With the default cursor you can select and manipulate objects on the screen.
B Wiper
Removes items from the sonar view. When selected, click on each overlay you wish to delete.
C Zoom windows
You can open up to four true zoom windows when running a Sonar Head.
D Tape Measure
Measures distances on the sonar view. Also allows you to place a measurement overlay on the sonar view.
E Protractor
You can use the protractor to measure the angle between two lines, then place the resulting overlay in the sonar view.
F String Measure
You can use the string measure tool to define an area. The size and perimeter of the area will be calculated for you.
G Text Label
The text label tool allows you to place comments on the screen.
H Reference Cursor 1
I Reference Cursor 2
You can place one or two reference cursors as overlays on the sonar view. When you place two cursors, an additional overlay will appear with information about the cursors.
J Image Quality Analysis System
The Image Quality Analysis System (IQAS) analyzes the image quality of a point target, or can be used to measure a known point target against a specification.
K Y1
Horizontal line overlay that can be used to mark the depth of the natural seabed (for use when excavating).
L Y2
Horizontal line overlay that can be used to mark the depth of a trenching target (for use when excavating).
M Show Full Screen
Click Full Screen to make the sonar view full screen. Press the Esc key to exit full-screen mode.
N Save image with overlays
Click this button to save sonar view images, including any overlays you’ve placed in the sonar views.
O Save image without overlays
Click this button to save sonar view images, excluding any overlays you’ve placed in the sonar views.
P TVG Setup dialog box
TVG (Time Variable Gain) compensates for the loss of acoustic energy due to geometric spread and absorption.
Q Average Filter
Clicking the “A” button will enable the Average Filter. This filter reduces noise. Slow-moving features persist on-screen.
R Background Removal
Clicking the “B” button will enable the Background Removal filter. This filter removes stationary parts of the background to enhance moving objects (such as fish, for example).
S Edge Enhancement
Clicking the “E” button will enable Edge Enhancement. This filter enhances the edge of moving features.
T No Filter
Disables any filters. The sonar view will display an unfiltered sonar image.