Manual Lowrance LMS 330C (page 64 of 216) (English)

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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 situa-

tions when too much clutter appears on the screen. Decreasing the sensitivity

can reduce the clutter and show the strongest fish echoes, if fish are present.

As you change the sensitivity setting, you can see the difference on the chart

as it scrolls.

These figures show results of different sensitivity levels on the same lo-

cation. Fig. 1: Sensitivity at 88 percent, determined by Auto Sensitivity.

Typical of full auto mode. Fig. 2: Sensitivity set at 75 percent. Fig. 3: Sen-

sitivity set at 50 percent. Fig. 4: Sensitivity set at 100 percent.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

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Lowrance LMS 330C Manual

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