Adjusting sensitivity in Manual Sensitivity Mode is similar to driving a car without cruise control — you have complete manual control of the car's speed. In the sonar unit, manual mode allows you to set sensitiv- ity at 100 percent (maximum) or zero percent (minimum.) Depending on water conditions, the bottom signal may completely disappear from the screen when you reduce sensitivity to about 50 percent or less!
Fig. 1 | Fig. 2 |
Fig. 3 | Fig. 4 |
These figures show results of different sensitivity levels on the same location. Fig. 1: Sensitivity at 88 percent, determined by Auto Sensitiv- ity. Typical of full auto mode. Fig. 2: Sensitivity set at 75 percent. Fig.
3: Sensitivity set at 50 percent. Fig. 4: Sensitivity set at 100 percent.
Try adjusting sensitivity in both auto and manual modes to see how they work.
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