CruzPro PcFF80, Руководство пользователя

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There is no limit to how many settings you can save to your hard drive.
When hunting for fish you will also want to use higher power but be
aware that high power will show fish better but the displayed digital depth
number may become unstable if you use too much power/receiver gain.
If you are searching for fish in shallow water and not looking deep enough
to see the bottom on the display, then the depth numbers will not work at
all.
The display and digital depth number can be affected by air bubbles in the
water near the surface (called “surface clutter”). Surface clutter can be
caused by crossing the wake of another boat, propeller wash caused by
reversing or passing near objects such as bridge abutments or pilings
when a current is running. There are several ways to help adjust for
surface clutter. You can increase the surface clutter rejection setting and/
or use time varying gain.
Time varying gain allows you to select a low gain initially at the surface
and then allow the gain to increase as a function of time (depth). If you
use time-varying gain be sure that you still use enough gain to see the
bottom or the digital depth number will become unstable. This will not
be a problem in deeper water since the gain will be higher. Time varying
gain can also cause you to miss fish near the surface. Everything is a
trade-off. You could use time-varying gain on one side of a split screen
and Fixed Analog Gain on the other side to help compensate.
In split-screen mode the PcFF80 uses the screen that is set to see the
deepest when calculating the bottom depth. If you are looking for fish
near the surface you can maintain a stable depth reading by setting one
side of the screen so that the bottom is displayed and the other side (with
possibly a higher receiver gain) to see fish.
Use DSP processing in very deep water when the bottom return or fish
signals are too weak to see using analog mode. DSP mode 2 gives the
cleanest looking display but DSP mode 1 will allow you to lock onto the
deepest bottom. The ultimate deep water response will be using DSP
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