Window Page; Fig. 3-5 Bottom Conditions - Raymarine L750 Operating Handbook

Chapter 3: Operating Instructions
the sound waves may reach through this layer, and may be reflected by a
more solid layer below. It is also possible that the sound waves are making
two complete trips – hitting the bottom, bouncing off of the bottom of the
boat, then reflecting off the bottom again. This can happen if the water is
shallow, the bottom is hard, or the sensitivity is set to a high value.
When the White Line feature is turned on, the unit produces a white area
at the top of the dark gray area. The edge of the white area is marked
with a dark line. This feature helps to show the difference between the
bottom itself and any fish which are very near the bottom.
Hard bottom
(sand)
A
Rocky bottom
C

Fig. 3-5 Bottom Conditions

Now, let's look at the other main operating pages. Press the Display
button. On the Soft Keys at the bottom of the display, press the button
for Window.

Window Page

The Soft Key for Window allows access to several different displays.
The right side of each display includes a section of the standard
Downlooker display. The left part of each display includes some digital
information. By choosing one of the three options - A, B, or C - you can
select the digital information you want to display. (Option D is available
if the optional Sidelooker is turned on.) Figure 3-6 shows one of the
options. (To select one of the other options, press the Soft Key under
Window until you see the display you want.)
Soft bottom
(mud)
B
White line feature on:
D
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