Owner`s manual

the full view side, but will remain fixed at the zero mark on the zoom

view.

Auto Zoom works best while moving very slowly or while you are sta-

tionary, such as ice fishing. Bottom Lock works best for trolling or mov-

ing at higher speeds. Both the Auto Zoom and Bottom Lock features are

available when in Low Power or the Normal Modes.

GAIN CONTROL

The knob located at the top of the control panel is the gain control. This

controls the amount of signal that you see on the display. A gain setting

of zero will display a minimum amount of signal while a gain setting of

ten will show the maximum amount. Different conditions will require

different gain settings. Deeper water will require higher gain than shal-

low water. A weedy bottom will demand a lower gain setting than a

clean bottom. Keep the gain level low. Too much gain can "wash out" the

targets that you want to see. A good rule to use is one number of gain

for every ten feet of depth.

Generally, for open water it is a good idea to set the gain at an appro-

priate level and leave it there. Only change the gain level if the water

depth or conditions change significantly. For Ice Fishing, you want to

adjust the gain and use your bait a the reference point. Adjust the gain

to make your bait appear as green.

INTERFERENCE REJECTION*

Pushing in on the Gain control knob operates the Interference Rejection

feature. The I.R. feature has ten steps of rejection to let you eliminate

unwanted interference from another nearby depth finder. When you turn

on the FL-18, the I.R. automatically comes on to the first step. If neces-

sary, press the Gain knob repeatedly until the interference is eliminated.

You can press the button nine times before you get back to the first step

again. Turning the unit off and then on again will also reset the I.R. back

to the first step.

* Patent #5,515,339