Raymarine L750, Руководство по эксплуатации

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L750 Fishfinder: Installation and Operation Handbook
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Notice that the scrolling speed of the display does not necessarily match
the speed of the boat. The scrolling speed of the display is called the
“chart speed.” You can adjust this by pressing the Menu button. (See
Section 4.)
Many of the items on this display appear in the other modes. Since you
are likely to use the Standard page most often, we will explain all of these
items here.
Top of display
1 - Auto features on (AUTO)
If any of the automatic features are turned on, the “Auto” indication
will appear here. (These include the automatic range, auto
sensitivity, and auto zoom features.)
2 - Auto gain on (G)
The “gain” or “sensitivity” controls the ability of the unit to tell the
difference between echoes of different strengths. A higher gain or
sensitivity setting makes it easier to see smaller fish, but also may
pick up background noise. When auto gain or sensitivity is on, the
Fishfinder chooses the correct sensitivity setting automatically.
3 - Auto range on (R)
The “range” is the maximum depth the unit is set to measure.
When the auto range feature is on, the Fishfinder chooses the
correct range setting automatically.
4 - Auto zoom on (Z)
The “zoom” can be used to magnify the image from a small section
of the water below the boat. (This is used with the Zoom feature,
which we will describe in a moment.) When the auto zoom feature
is on, the Fishfinder automatically moves the zoom window up or
down to track the bottom.
5 - Alarm indicators
The Fishfinder has alarms which can be set to sound when the unit
detects a depth less than a pre-set limit (“S” symbol - shallow
alarm), or greater than a pre-set limit (“D” symbol - deep alarm).
Another alarm can be set to sound when the unit sees a fish
(indicated by the fish symbol.) The “S” and “D” symbols flash
whenever the shallow or deep alarm is triggered.