Sonar Operations
As you can see from the quick reference on the previous page, basic operation is pretty easy, right out of the box. If you are a sonar novice, try operating the unit with the factory defaults until you get a feel for how it's working.
As you're learning the basics, there is one setting you might want to tinker with from time to time — Sensitivity.
Sensitivity controls the unit's ability to pick up echoes. If you want to see more detail, try increasing the sensitivity, a little at a time. There are situations when too much clutter appears on the screen. Decreasing the sensitivity can reduce the clutter and show the strongest fish ech- oes, if fish are present. As you change the sensitivity setting, you can see the difference on the chart as it scrolls.
Fig. 1 | Fig. 2 |
Bait
school 
Thermocline
with fish
Fish
arches
Fig. 3 |
| Fig. 4 |
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These figures show results of different sensitivity levels on the same location. Fig. 1: Sensitivity at 87 percent, determined by Auto Sensitiv- ity. Typical of full auto mode. Fig. 2: Sensitivity set at 50 percent. Fig.
3: Sensitivity set at 20 percent. Fig. 4: Sensitivity set at 100 percent.
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