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If you are using the Wide Side accessory transducer, the screen layout will look like
Figure C.
Later, you will learn of another feature called "advanced operation". This feature uses yet
another screen layout as shown in Figure D which maximizes the display for the terrain and target
presentation.
The number of vertical pixels (picture elements or dots) in a given depth range
determines the display resolution, or ability to differentiate targets close to the bottom or other
targets. The Wide View is capable of distinguishing between targets only 6 inches apart, and
show fish within 6 inches of the bottom.
On all screens but the Wide Side view, the horizontal line at the top of the display is the
"Zero" line. This represents the surface of the water. The "Zero" line will always have a gap which
moves as the screen updates. This gap lets you know that the display is updating even if the
bottom terrain remains the same or is not visible on the selected depth range. The farthest right
column of information is the most recent information, and it shows what is directly under your
boat.
At power-up, the Wide View locates the bottom and adjusts the depth range to a setting
most appropriate for that depth. The bottom will be usually shown about 2/3 of the way down the
display. The Structure ID depiction of the bottom may appear differently in different situations. If
the bottom is very hard and smooth, the bottom depiction will be narrow and dense. If the bottom
is mud or soft sand, the bottom depiction will be thick and less dense. This indicates that much of
the sonar signal is absorbed by the soft bottom. If the bottom is rugged and varying, such as a
rocky bottom, the depiction will be textured and vary in density. Structure, such as submerged
trees or brush, or other objects are clearly displayed above the solid bottom return, in varying
densities of pixelization. This bottom depiction is useful in locating structure, by comparing
relative density as well as depth.