1. OPERATION
21
1. Select White Marker and press the [EN-
TER] key.
2. Use
W
or
X
to select high or low frequen-
cy as appropriate.
3. Use
S
or
T
to select the color to display
in white. For example, to display the bot-
tom echo in white, select the topmost col-
or on the color bar.
4. Press the [ENTER] key.
STC:
Delete unwanted echoes (plankton, air
bubbles, etc.) near the surface. This is useful
to clear the surface of unwanted echoes to
look for surface fish. The setting range is 0-
10, and 0 is Off. The larger the value, the
more surface echoes are erased. In setting
10, STC deletes unwanted echoes from the
surface to about 16 ft. Avoid setting the STC
too high; fish echoes near the surface may be
erased.
Smoothing:
If echoes appear like "patch-
work," turn this feature on to smooth them.
Bottom Zone:
Select the area where to show
the bottom echo, when Auto Range is active.
1. Choose Bottom Zone and press the [EN-
TER] key.
2. Use
W
or
X
to select the boundary line to
adjust.
3. Use
S
or
T
to adjust the boundary line.
Bottom Search:
Select the frequency to use
to detect depth when using the dual frequency
display. The choices are
HF
,
LF
, and
Auto
.
Auto
gives priority to a frequency which is giv-
ing the most accurate depth data.
Echo Stretch:
Turn this feature on to stretch
the tail of echoes. This is useful when you are
trying to find individual fish within a layer of
plankton.
Color selected with arrow is shown
in white.
Boundary
line (top)
Boundary
line (bottom)
Bottom
display
area
