Digital Depth
Readout of the current bottom depth.
Water Temperature
Readout of the current water temperature returned by the TEMP 1 sensor included into specific transducers.
Alarm Bar
Bars showing the shallow water and deep water alarm values. The alarm is triggered when depth is outside the range.
Depth ruler
Vertical graduated bar. It is a scale which reflects the depth of the area being displayed.
Variable Depth Marker (VDM)
Horizontal line on to the Fish Finder Display with a depth label. The up/down cursor keys can move it up and down. The label displays the depth of the cursor position. It can be moved to any location pinpointing the depth of a target.
Zoom Bar
Bar showing the portion of the Fish Finder Display currently represented in the zoomed window (on the left part of the screen). It is turned on selecting Zoom Full display page.
A-Scope
A real time representation of fish and bottom features passing through the beam of the transducer. It is drawn as horizontal lines whose length and hue is proportional to the sonar strength returned. When the default palette is selected, the strongest sonar returns will be shown as the color displayed of the top of Color Bar while the weakest as the bottom color.
Operating Frequency
Readout of the selected operating frequency.
2.1.1 Understanding the Fish Finder Display
The main elements that can be easily distinguished into an Fish Finder Display are:
1Fishes
2Thermoclines
3 | White Line | 1 |
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4 | Surface Clutter | 2 |
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5Structures
3
6Bottom Echo Profile
4
5
6
Fig. 2.1.1 - The Fish Finder Display
Fish
Fish are represented as arcs because of the cone angle of the transducer. In fact as the boat passes over the fish the leading edge of the cone strikes the
12 | User Manual |
