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screen, showing the distance behind the boat. If the speed/temperature
sensor is not plugged into the X-70A 3D, then none of these will show.
MODES OF OPERATION
The X-70A 3D shows a sonar picture of the underwater world in 3D, 2D,
Bottom Depth View, and FasTrack™ modes. The 2D and Bottom Depth
Views can use either the 384
or 192 kHz transducer (if the
optional 192 kHz transducer is
attached). The 3D mode is al-
ways 384 kHz. To switch be-
tween the different modes, first
press the WINDOWS key.
Press a key on the left side of
the screen to choose the de-
sired mode. Press the CLR
key to exit this menu.
In the 3D mode shown at right,
the bottom is represented by a “wire-frame” model. Only the bottom and
fish symbols show in this mode. Structure, weeds, thermoclines, etc. will
not show.
The X-70A 3D uses a 384 kHz transducer with four elements. The digital
depth display shows the bottom depth from the middle transducer ele-
ments. If it loses the signal from any element, a box with the word “LOST”
appears over the corresponding area on the display. This means the unit
cannot receive an echo from that element. This could be due to a large
drop-off, noise or other natural phenomenon.
The 2D mode looks like a conventional sonar display as shown below.
The bottom echo scrolls from right to left. The range displays on the right
side of the screen. The digital
bottom depth shows in the
upper left corner. When the X-
70A 3D is put into the 2D 384
kHz mode, the two center
transducer elements are in
use. The two outer elements
are turned off. You can select
the elements from a menu dis-
cussed in a later section. The
2D 192 kHz transducer has
only one element.