Operation Manual
FarSounder, Inc.
F31552 (Rev. 2.6.1)
Page 31 of 56
Color Map to Depth/Signal Level
Toggles between color mapped to Signal Level in decibels and color mapped to depth. The color scale will
be changed to the user's last color extent values for the color map currently being shown.
The user can change the scale's extents by clicking on the red or blue extent values. A number pad will
then pop up allowing for mouse or keyboard specification of a new value. The new settings will be active
on the next ping.
Note that with color mapped to Depth, the depth indicated is either "Depth Below Surface" or "Depth Below
Keel" as noted by a lable in the bottom left corner of the 3D sonar display. With color mapped to Signal Level,
the numbers correspond to the same scale as the Squelch settings as described in "3D Sonar Processing
Options".
5.6. Mouse Controls
Mouse Drag Left Button (Any Direction in 3D View)
Left dragging has two different behaviors, depending on where the user starts dragging the mouse.
When positioned at the end of the profile selector, a large double sided arrow will appear. In this case, left
dragging will change the angle of the profile selector.
When in 3D mode and not over the end of the profile selector, left click dragging the mouse will rotate the
3D display volume.
Mouse Drag Right Button (Up and Down)
In the 3D view, this action will zoom in and out, enlarging the data (up) and shrinking the data (down). This
control is valid in both 3D Mode and Standard Mode.
In the Profile View, this action changes the aspect ratio of the profile view.
Note: The angular line extending
downwards from the boat icon represents a 45 degree angle from horizontal.
Mouse Hover Over Color Scale (When Shown)
This action shows the depth or decibel value for a given color on the color scale.
Mouse Hover Over Color Scale Extent Numbers
This action shows an edit box that can be used to enter new color scale extent values. Newly changed
values will be active on the next ping.
5.7. 3D Sonar Processing Options
Like other marine electronics sensors, there are processing control settings for the FarSounder sonars.
FarSounder has developed autonomous processing algorithms that intelligently control various stages of the
processing routines and automatically remove most of the "noise" in the image without user interaction. The
few controls that require user interaction are found in the Processor Settings tool bar (Figure 23, “Processor
Configuration Window”). This tool bar is displayed when the user clicks on the "Processor Settings" button
at the top of the 3D Sonar Display (see Figure 18, “The 3D Sonar Display”). Working from left to right, this
window has the following controls: Processing Mode Drop Down Selector, Detect Bottom Check Box, Auto
Squelch Check Box, and Squelch slider.
