Raytheon HSB L755, Owner'S Handbook Manual

Page: 99 / 224

Chapter 3: Getting Started & Adjusting the Display 3-23
Us
in
g
Zo
o
m
Figure 3-8: The Three Modes of A-Scope
Using Zoom
Zoom enlarges all or part of the scrolling bottom display. You can select
automatic zoom so the fishfinder selects a zoom level that keeps the bottom in
the lower half of the display window. Alternatively, you can manually pick the
area to be zoomed.
➤
To select zoom:
1. Press the
ZOOM
soft key, if necessary press the
ZOOM ON OFF
soft key to
toggle zoom on.
2. Press the
ZOOM FULL SPLT
soft key to toggle between a full window zoom
image or split windows.
If you select split windows, the display is split vertically, with the zoom
image in the left hand window and the scrolling bottom display in the right
hand window.
In a split window display, a vertical bar appears (along the right hand edge
of the scrolling bottom image) that references the range being displayed in
the zoom window. This bar varies in height with the selected zoom level.
3. If necessary, press the
ZOOM AUTO MAN
soft key to toggle the setting
between
AUTO
and
MAN
. The manual setting allows you to reposition the
zoomed image.
4. For zoom level selection, press the
ZOOM X 2 4 6
soft key until the required
zoom level is selected.
5. Press
ENTER
or
CLEAR
to return to the default display.
A-SCOPE Mode 1 Mode 2
Mode 3
ZOOM FREQUENCY
25
65
BTM.LOCK A-SCOPE
AUTO G Z
0
52.3
50kHz
35
50
75
25
100
ft
BTM.LOCK A-SCOPE
52.3
A-SCOPE
52.3
A-SCOPE
52.3
D5258-1
ZOOM