Humminbird LCR 4000, Operation Manual

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USING THE LCR 4000
TOTAL SCREEN UPDATE
TOTAL SCREEN UPDATE®
What is Total Screen Update?
Total screen update is a unique feature of the LCR4000. It will allow you, when
changing depth scales, to totally change or update the screen to the new depth scale. It
will allow you to zoom in and look at information in much finer detail even after you’ve
already gone over the area. It will allow you to reverse or bring back information that
has gone off the display (up to three full screens).
How Does Total Screen Update Work?
Inside the LCR4000 are memory devices which can store approximately 60,000 bits of
information. Automatically, while you're operating the LCR4000, the computer is putting
information into the LCR'S memory. This stored information is all the data from zero to
120 feet for four entire screens. All this information (from 0 to 120 ft.) is being recorded
no matter what depth scale you’re using. Also, the information is being put into memory
in much smaller increments (pieces) than is being displayed on the normal 0 to 15, 0 to
30, 0 to 60, or 0 to 120 foot scales. For example, on the 0 to 60 foot scale each dot is
equal to one foot of depth, but the computer is putting information into memory such
that each dot equals 3 inches.
If after reading this, you don't understand all about how the LCR4000’s Total Screen
Update works, don’t worry. The important thing is that you understand how to use Total
Screen Update. Read on…