Vexilar 107 Pro - Manual (Page 22)

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TYPICAL INDICATIONS
Once the boat is in the water and you have turned on
the 107 Pro, in automatic range mode, you must allow it
time to find the bottom. This can take just a short moment
or several minutes, depending on the depth and conditions.
If you are operating in manual range mode, you will need
to adjust the range. As soon as the digital depth appears,
the graphical representation of the bottom will start to move
across the screen. The appearance of the bottom signal can
give you information as to what type of bottom you are
over.
Using the 107 Pro's Clean Line feature, you can help
determine the hardness of the bottom. Clean Line "cleans
out" the target signal on harder objects. A hard bottom will
appear cleaned out in the center. A soft bottom will be all
black.
SEEING FISH
Fish passing through the cone will appear as an arc, or
partial arc. Here is how it works. The 107 Pro has allot of
power and a very wide cone angle. When the fish appears
at the edge of the cone it is far away from the transducer.
The display begins to draw the target on the screen. As the
fish gets closer to the center of the cone the target appears
to get shallower and the unit draws the target line getting
shallower. When the fish passes to the other side of the cone
it appears to get deeper. The unit now draws the line going