10
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 set-
ting of ten will show the maximum amount. Different conditions will
require different gain settings. Deeper water will require higher gain
than shallow 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. Generally, it is a good idea to set
the gain at an appropriate level and leave it there. Only change the gain
level if the water depth or conditions change.
INTERFERENCE REJECTION*
The yellow button in the middle of the panel controls the Interference
Rejection feature. The red LED to the upper left of the I.R. button tells
you if the rejection circuitry is on. The I.R. feature has eight steps of rejec-
tion to let you eliminate unwanted interference from another nearby
depth finder. When you turn on the FL-8SLT on, the I.R. automatically
comes on to the first step. If necessary, press the I.R. button repeatedly
until the interference is eliminated. You can press the button seven 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. To turn the I.R. fea-
ture off press the Gain control knob. The red LED will also go off.
TIP
- If running two SLTs, it is best to turn the I.R. off on one unit
and then eliminate the interference on the other unit.
* Patent #5,515,339
