Echogram Window; Digital Depth; Alarm Bar; Depth Ruler - VDO MAP 7w Plus GPS User Manual

The following is a short description of terms listed in the previous Fig. 7.2:
Warning Message
Flashing label "Simulation" when the echo sounder is in Simulation mode.

Echogram window

Graphic presentation of sonar soundings recorded as a continuous profile
scrolling across the screen from right to left. Such recordings represent the
image of the water beneath your boat, items appear as they pass under your
transducer; the items on the right side of the screen are closer to you than
those on the left. The correct interpretation of the Echogram allows retrieving
useful information about what is under the boat. See the following Par. 7.2.2
for more information.
Color Bar
Colored scale located on the left side of the screen that shows the colors used
in the Echogram to represent the echoes strength. The color on the top of the
bar represents the maximum sonar strength, while the color on the bottom of
the bar represents the minimum sonar strength.

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

Bar located on the right side of the Depth Ruler, showing the shallow water
and deep water alarm values. The alarm is triggered when depth is outside
the range.

Depth Ruler

Vertical graduated bar located along the right side of the screen. It is a scale
which reflects the depth of the area being displayed.
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Fig. 7.2 - The Fish Finder page
User Manual